./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396edcb7-c927-4054-8f82-78c739c635b0/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396edcb7-c927-4054-8f82-78c739c635b0/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396edcb7-c927-4054-8f82-78c739c635b0/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396edcb7-c927-4054-8f82-78c739c635b0/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396edcb7-c927-4054-8f82-78c739c635b0/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396edcb7-c927-4054-8f82-78c739c635b0/bin/uautomizer-IVEQpCNsaX --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 76e1fb283eaa9b9489ec46678de9c71238e259f3b18cc82b368e6453537b0902 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 08:43:42,443 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 08:43:42,445 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 08:43:42,502 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 08:43:42,503 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 08:43:42,504 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 08:43:42,506 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 08:43:42,509 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 08:43:42,511 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 08:43:42,512 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 08:43:42,514 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 08:43:42,515 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 08:43:42,516 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 08:43:42,517 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 08:43:42,519 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 08:43:42,521 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 08:43:42,522 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 08:43:42,524 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 08:43:42,526 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 08:43:42,529 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 08:43:42,531 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 08:43:42,533 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 08:43:42,535 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 08:43:42,536 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 08:43:42,540 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 08:43:42,541 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 08:43:42,541 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 08:43:42,543 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 08:43:42,543 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 08:43:42,545 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 08:43:42,545 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 08:43:42,546 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 08:43:42,547 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 08:43:42,548 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 08:43:42,549 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 08:43:42,550 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 08:43:42,551 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 08:43:42,551 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 08:43:42,552 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 08:43:42,553 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 08:43:42,554 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 08:43:42,555 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396edcb7-c927-4054-8f82-78c739c635b0/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 08:43:42,597 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 08:43:42,600 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 08:43:42,601 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 08:43:42,601 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 08:43:42,604 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 08:43:42,604 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 08:43:42,604 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 08:43:42,604 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 08:43:42,605 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 08:43:42,605 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 08:43:42,606 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 08:43:42,606 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 08:43:42,607 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 08:43:42,607 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 08:43:42,607 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 08:43:42,607 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 08:43:42,607 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 08:43:42,608 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 08:43:42,608 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 08:43:42,608 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 08:43:42,608 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 08:43:42,609 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 08:43:42,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:43:42,609 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 08:43:42,609 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 08:43:42,610 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 08:43:42,610 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 08:43:42,610 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 08:43:42,610 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 08:43:42,612 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 08:43:42,612 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 08:43:42,613 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 08:43:42,613 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_396edcb7-c927-4054-8f82-78c739c635b0/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396edcb7-c927-4054-8f82-78c739c635b0/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 76e1fb283eaa9b9489ec46678de9c71238e259f3b18cc82b368e6453537b0902 [2021-11-09 08:43:42,898 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 08:43:42,929 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 08:43:42,932 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 08:43:42,934 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 08:43:42,934 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 08:43:42,935 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396edcb7-c927-4054-8f82-78c739c635b0/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2021-11-09 08:43:43,010 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396edcb7-c927-4054-8f82-78c739c635b0/bin/uautomizer-IVEQpCNsaX/data/c1a46cbb8/15b15b07aa70484a83f3b2b1ee4e04ea/FLAG7191aab51 [2021-11-09 08:43:43,761 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 08:43:43,767 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396edcb7-c927-4054-8f82-78c739c635b0/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2021-11-09 08:43:43,816 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396edcb7-c927-4054-8f82-78c739c635b0/bin/uautomizer-IVEQpCNsaX/data/c1a46cbb8/15b15b07aa70484a83f3b2b1ee4e04ea/FLAG7191aab51 [2021-11-09 08:43:43,861 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396edcb7-c927-4054-8f82-78c739c635b0/bin/uautomizer-IVEQpCNsaX/data/c1a46cbb8/15b15b07aa70484a83f3b2b1ee4e04ea [2021-11-09 08:43:43,864 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 08:43:43,865 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 08:43:43,867 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 08:43:43,867 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 08:43:43,871 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 08:43:43,873 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:43:43" (1/1) ... [2021-11-09 08:43:43,875 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e9a2adc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:43:43, skipping insertion in model container [2021-11-09 08:43:43,875 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:43:43" (1/1) ... [2021-11-09 08:43:43,883 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 08:43:44,044 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 08:43:44,787 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_396edcb7-c927-4054-8f82-78c739c635b0/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c[39479,39492] [2021-11-09 08:43:45,188 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:43:45,203 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 08:43:45,572 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_396edcb7-c927-4054-8f82-78c739c635b0/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c[39479,39492] [2021-11-09 08:43:45,897 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:43:45,932 INFO L208 MainTranslator]: Completed translation [2021-11-09 08:43:45,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:43:45 WrapperNode [2021-11-09 08:43:45,933 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 08:43:45,936 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 08:43:45,937 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 08:43:45,937 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 08:43:45,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:43:45" (1/1) ... [2021-11-09 08:43:46,009 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:43:45" (1/1) ... [2021-11-09 08:43:46,136 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 08:43:46,138 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 08:43:46,139 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 08:43:46,139 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 08:43:46,148 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:43:45" (1/1) ... [2021-11-09 08:43:46,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:43:45" (1/1) ... [2021-11-09 08:43:46,160 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:43:45" (1/1) ... [2021-11-09 08:43:46,160 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:43:45" (1/1) ... [2021-11-09 08:43:46,231 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:43:45" (1/1) ... [2021-11-09 08:43:46,272 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:43:45" (1/1) ... [2021-11-09 08:43:46,287 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:43:45" (1/1) ... [2021-11-09 08:43:46,380 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 08:43:46,382 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 08:43:46,382 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 08:43:46,383 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 08:43:46,395 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:43:45" (1/1) ... [2021-11-09 08:43:46,404 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:43:46,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396edcb7-c927-4054-8f82-78c739c635b0/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:43:46,436 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396edcb7-c927-4054-8f82-78c739c635b0/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 08:43:46,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396edcb7-c927-4054-8f82-78c739c635b0/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 08:43:46,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 08:43:46,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 08:43:46,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 08:43:46,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 08:43:50,139 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 08:43:50,140 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-09 08:43:50,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:43:50 BoogieIcfgContainer [2021-11-09 08:43:50,145 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 08:43:50,147 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 08:43:50,147 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 08:43:50,150 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 08:43:50,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 08:43:43" (1/3) ... [2021-11-09 08:43:50,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74b293d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:43:50, skipping insertion in model container [2021-11-09 08:43:50,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:43:45" (2/3) ... [2021-11-09 08:43:50,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74b293d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:43:50, skipping insertion in model container [2021-11-09 08:43:50,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:43:50" (3/3) ... [2021-11-09 08:43:50,154 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2021-11-09 08:43:50,159 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 08:43:50,159 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-09 08:43:50,234 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 08:43:50,247 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 [2021-11-09 08:43:50,247 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-09 08:43:50,304 INFO L276 IsEmpty]: Start isEmpty. Operand has 1524 states, 1522 states have (on average 1.7772667542706964) internal successors, (2705), 1523 states have internal predecessors, (2705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:43:50,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2021-11-09 08:43:50,350 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:43:50,350 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:43:50,351 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:43:50,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:43:50,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1613009937, now seen corresponding path program 1 times [2021-11-09 08:43:50,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:43:50,365 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412615339] [2021-11-09 08:43:50,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:43:50,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:43:50,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:43:51,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:43:51,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:43:51,176 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412615339] [2021-11-09 08:43:51,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412615339] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:43:51,178 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:43:51,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:43:51,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111846283] [2021-11-09 08:43:51,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:43:51,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:43:51,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:43:51,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:43:51,221 INFO L87 Difference]: Start difference. First operand has 1524 states, 1522 states have (on average 1.7772667542706964) internal successors, (2705), 1523 states have internal predecessors, (2705), 0 states have call successors, (0), 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 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:43:51,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:43:51,512 INFO L93 Difference]: Finished difference Result 3048 states and 5320 transitions. [2021-11-09 08:43:51,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:43:51,514 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 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 [2021-11-09 08:43:51,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:43:51,550 INFO L225 Difference]: With dead ends: 3048 [2021-11-09 08:43:51,550 INFO L226 Difference]: Without dead ends: 2112 [2021-11-09 08:43:51,561 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 [2021-11-09 08:43:51,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2112 states. [2021-11-09 08:43:51,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2112 to 2110. [2021-11-09 08:43:51,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2110 states, 2109 states have (on average 1.6789947842579422) internal successors, (3541), 2109 states have internal predecessors, (3541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:43:51,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2110 states to 2110 states and 3541 transitions. [2021-11-09 08:43:51,745 INFO L78 Accepts]: Start accepts. Automaton has 2110 states and 3541 transitions. Word has length 372 [2021-11-09 08:43:51,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:43:51,791 INFO L470 AbstractCegarLoop]: Abstraction has 2110 states and 3541 transitions. [2021-11-09 08:43:51,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:43:51,791 INFO L276 IsEmpty]: Start isEmpty. Operand 2110 states and 3541 transitions. [2021-11-09 08:43:51,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2021-11-09 08:43:51,809 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:43:51,810 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:43:51,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 08:43:51,811 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:43:51,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:43:51,814 INFO L85 PathProgramCache]: Analyzing trace with hash 493525477, now seen corresponding path program 1 times [2021-11-09 08:43:51,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:43:51,815 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516903527] [2021-11-09 08:43:51,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:43:51,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:43:51,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:43:52,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:43:52,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:43:52,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516903527] [2021-11-09 08:43:52,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516903527] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:43:52,152 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:43:52,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:43:52,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101534122] [2021-11-09 08:43:52,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:43:52,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:43:52,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:43:52,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:43:52,158 INFO L87 Difference]: Start difference. First operand 2110 states and 3541 transitions. Second operand has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:43:52,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:43:52,340 INFO L93 Difference]: Finished difference Result 4486 states and 7428 transitions. [2021-11-09 08:43:52,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:43:52,341 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 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 [2021-11-09 08:43:52,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:43:52,365 INFO L225 Difference]: With dead ends: 4486 [2021-11-09 08:43:52,365 INFO L226 Difference]: Without dead ends: 3036 [2021-11-09 08:43:52,368 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 [2021-11-09 08:43:52,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3036 states. [2021-11-09 08:43:52,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3036 to 3034. [2021-11-09 08:43:52,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3034 states, 3033 states have (on average 1.6623804813715792) internal successors, (5042), 3033 states have internal predecessors, (5042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:43:52,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3034 states to 3034 states and 5042 transitions. [2021-11-09 08:43:52,520 INFO L78 Accepts]: Start accepts. Automaton has 3034 states and 5042 transitions. Word has length 372 [2021-11-09 08:43:52,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:43:52,522 INFO L470 AbstractCegarLoop]: Abstraction has 3034 states and 5042 transitions. [2021-11-09 08:43:52,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:43:52,523 INFO L276 IsEmpty]: Start isEmpty. Operand 3034 states and 5042 transitions. [2021-11-09 08:43:52,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2021-11-09 08:43:52,593 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:43:52,594 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:43:52,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 08:43:52,594 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:43:52,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:43:52,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1929060325, now seen corresponding path program 1 times [2021-11-09 08:43:52,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:43:52,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773098043] [2021-11-09 08:43:52,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:43:52,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:43:52,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:43:53,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:43:53,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:43:53,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773098043] [2021-11-09 08:43:53,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773098043] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:43:53,089 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:43:53,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-09 08:43:53,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989603403] [2021-11-09 08:43:53,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 08:43:53,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:43:53,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 08:43:53,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-09 08:43:53,095 INFO L87 Difference]: Start difference. First operand 3034 states and 5042 transitions. Second operand has 7 states, 7 states have (on average 53.142857142857146) internal successors, (372), 7 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:43:54,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:43:54,060 INFO L93 Difference]: Finished difference Result 8646 states and 14554 transitions. [2021-11-09 08:43:54,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 08:43:54,061 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 53.142857142857146) internal successors, (372), 7 states have internal predecessors, (372), 0 states have call successors, (0), 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 [2021-11-09 08:43:54,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:43:54,111 INFO L225 Difference]: With dead ends: 8646 [2021-11-09 08:43:54,112 INFO L226 Difference]: Without dead ends: 7924 [2021-11-09 08:43:54,116 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2021-11-09 08:43:54,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7924 states. [2021-11-09 08:43:54,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7924 to 4814. [2021-11-09 08:43:54,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4814 states, 4813 states have (on average 1.6717224184500312) internal successors, (8046), 4813 states have internal predecessors, (8046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:43:54,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4814 states to 4814 states and 8046 transitions. [2021-11-09 08:43:54,594 INFO L78 Accepts]: Start accepts. Automaton has 4814 states and 8046 transitions. Word has length 372 [2021-11-09 08:43:54,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:43:54,595 INFO L470 AbstractCegarLoop]: Abstraction has 4814 states and 8046 transitions. [2021-11-09 08:43:54,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 53.142857142857146) internal successors, (372), 7 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:43:54,596 INFO L276 IsEmpty]: Start isEmpty. Operand 4814 states and 8046 transitions. [2021-11-09 08:43:54,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2021-11-09 08:43:54,611 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:43:54,612 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:43:54,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-09 08:43:54,613 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:43:54,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:43:54,614 INFO L85 PathProgramCache]: Analyzing trace with hash -355152036, now seen corresponding path program 1 times [2021-11-09 08:43:54,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:43:54,614 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356914880] [2021-11-09 08:43:54,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:43:54,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:43:54,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:43:54,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:43:54,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:43:54,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356914880] [2021-11-09 08:43:54,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356914880] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:43:54,880 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:43:54,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 08:43:54,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137628512] [2021-11-09 08:43:54,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:43:54,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:43:54,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:43:54,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:43:54,884 INFO L87 Difference]: Start difference. First operand 4814 states and 8046 transitions. Second operand has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:43:55,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:43:55,497 INFO L93 Difference]: Finished difference Result 10540 states and 17741 transitions. [2021-11-09 08:43:55,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 08:43:55,498 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 0 states have call successors, (0), 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 373 [2021-11-09 08:43:55,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:43:55,548 INFO L225 Difference]: With dead ends: 10540 [2021-11-09 08:43:55,549 INFO L226 Difference]: Without dead ends: 8378 [2021-11-09 08:43:55,557 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:43:55,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8378 states. [2021-11-09 08:43:56,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8378 to 7470. [2021-11-09 08:43:56,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7470 states, 7469 states have (on average 1.6759941089837997) internal successors, (12518), 7469 states have internal predecessors, (12518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:43:56,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7470 states to 7470 states and 12518 transitions. [2021-11-09 08:43:56,142 INFO L78 Accepts]: Start accepts. Automaton has 7470 states and 12518 transitions. Word has length 373 [2021-11-09 08:43:56,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:43:56,143 INFO L470 AbstractCegarLoop]: Abstraction has 7470 states and 12518 transitions. [2021-11-09 08:43:56,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:43:56,143 INFO L276 IsEmpty]: Start isEmpty. Operand 7470 states and 12518 transitions. [2021-11-09 08:43:56,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2021-11-09 08:43:56,160 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:43:56,161 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:43:56,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-09 08:43:56,161 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:43:56,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:43:56,162 INFO L85 PathProgramCache]: Analyzing trace with hash 816211433, now seen corresponding path program 1 times [2021-11-09 08:43:56,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:43:56,163 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810421856] [2021-11-09 08:43:56,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:43:56,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:43:56,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:43:56,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:43:56,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:43:56,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810421856] [2021-11-09 08:43:56,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810421856] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:43:56,446 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:43:56,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-09 08:43:56,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227790510] [2021-11-09 08:43:56,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 08:43:56,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:43:56,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 08:43:56,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-09 08:43:56,449 INFO L87 Difference]: Start difference. First operand 7470 states and 12518 transitions. Second operand has 7 states, 7 states have (on average 53.42857142857143) internal successors, (374), 7 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:43:57,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:43:57,648 INFO L93 Difference]: Finished difference Result 16374 states and 27610 transitions. [2021-11-09 08:43:57,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 08:43:57,649 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 53.42857142857143) internal successors, (374), 7 states have internal predecessors, (374), 0 states have call successors, (0), 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 374 [2021-11-09 08:43:57,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:43:57,724 INFO L225 Difference]: With dead ends: 16374 [2021-11-09 08:43:57,724 INFO L226 Difference]: Without dead ends: 15652 [2021-11-09 08:43:57,732 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-09 08:43:57,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15652 states. [2021-11-09 08:43:58,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15652 to 9798. [2021-11-09 08:43:58,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9798 states, 9797 states have (on average 1.6790854343166275) internal successors, (16450), 9797 states have internal predecessors, (16450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:43:58,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9798 states to 9798 states and 16450 transitions. [2021-11-09 08:43:58,624 INFO L78 Accepts]: Start accepts. Automaton has 9798 states and 16450 transitions. Word has length 374 [2021-11-09 08:43:58,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:43:58,625 INFO L470 AbstractCegarLoop]: Abstraction has 9798 states and 16450 transitions. [2021-11-09 08:43:58,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 53.42857142857143) internal successors, (374), 7 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:43:58,627 INFO L276 IsEmpty]: Start isEmpty. Operand 9798 states and 16450 transitions. [2021-11-09 08:43:58,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2021-11-09 08:43:58,646 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:43:58,646 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:43:58,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-09 08:43:58,647 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:43:58,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:43:58,648 INFO L85 PathProgramCache]: Analyzing trace with hash -680467245, now seen corresponding path program 1 times [2021-11-09 08:43:58,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:43:58,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250617188] [2021-11-09 08:43:58,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:43:58,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:43:58,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:43:59,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:43:59,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:43:59,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250617188] [2021-11-09 08:43:59,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250617188] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:43:59,021 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:43:59,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-09 08:43:59,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562622007] [2021-11-09 08:43:59,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 08:43:59,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:43:59,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 08:43:59,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-09 08:43:59,029 INFO L87 Difference]: Start difference. First operand 9798 states and 16450 transitions. Second operand has 7 states, 7 states have (on average 53.42857142857143) internal successors, (374), 7 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:44:00,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:44:00,353 INFO L93 Difference]: Finished difference Result 19370 states and 32691 transitions. [2021-11-09 08:44:00,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 08:44:00,354 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 53.42857142857143) internal successors, (374), 7 states have internal predecessors, (374), 0 states have call successors, (0), 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 374 [2021-11-09 08:44:00,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:44:00,415 INFO L225 Difference]: With dead ends: 19370 [2021-11-09 08:44:00,416 INFO L226 Difference]: Without dead ends: 17932 [2021-11-09 08:44:00,427 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2021-11-09 08:44:00,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17932 states. [2021-11-09 08:44:01,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17932 to 11406. [2021-11-09 08:44:01,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11406 states, 11405 states have (on average 1.680491012713722) internal successors, (19166), 11405 states have internal predecessors, (19166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:44:01,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11406 states to 11406 states and 19166 transitions. [2021-11-09 08:44:01,318 INFO L78 Accepts]: Start accepts. Automaton has 11406 states and 19166 transitions. Word has length 374 [2021-11-09 08:44:01,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:44:01,319 INFO L470 AbstractCegarLoop]: Abstraction has 11406 states and 19166 transitions. [2021-11-09 08:44:01,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 53.42857142857143) internal successors, (374), 7 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:44:01,319 INFO L276 IsEmpty]: Start isEmpty. Operand 11406 states and 19166 transitions. [2021-11-09 08:44:01,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2021-11-09 08:44:01,336 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:44:01,337 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:44:01,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-09 08:44:01,337 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:44:01,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:44:01,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1028241981, now seen corresponding path program 1 times [2021-11-09 08:44:01,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:44:01,342 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560253655] [2021-11-09 08:44:01,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:44:01,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:44:01,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:44:01,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:44:01,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:44:01,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560253655] [2021-11-09 08:44:01,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560253655] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:44:01,744 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:44:01,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-09 08:44:01,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311666535] [2021-11-09 08:44:01,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 08:44:01,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:44:01,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 08:44:01,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-09 08:44:01,746 INFO L87 Difference]: Start difference. First operand 11406 states and 19166 transitions. Second operand has 7 states, 7 states have (on average 53.42857142857143) internal successors, (374), 7 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:44:03,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:44:03,242 INFO L93 Difference]: Finished difference Result 20946 states and 35348 transitions. [2021-11-09 08:44:03,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 08:44:03,243 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 53.42857142857143) internal successors, (374), 7 states have internal predecessors, (374), 0 states have call successors, (0), 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 374 [2021-11-09 08:44:03,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:44:03,302 INFO L225 Difference]: With dead ends: 20946 [2021-11-09 08:44:03,302 INFO L226 Difference]: Without dead ends: 19508 [2021-11-09 08:44:03,312 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2021-11-09 08:44:03,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19508 states. [2021-11-09 08:44:04,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19508 to 12982. [2021-11-09 08:44:04,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12982 states, 12981 states have (on average 1.6811493721593098) internal successors, (21823), 12981 states have internal predecessors, (21823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:44:04,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12982 states to 12982 states and 21823 transitions. [2021-11-09 08:44:04,457 INFO L78 Accepts]: Start accepts. Automaton has 12982 states and 21823 transitions. Word has length 374 [2021-11-09 08:44:04,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:44:04,458 INFO L470 AbstractCegarLoop]: Abstraction has 12982 states and 21823 transitions. [2021-11-09 08:44:04,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 53.42857142857143) internal successors, (374), 7 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:44:04,459 INFO L276 IsEmpty]: Start isEmpty. Operand 12982 states and 21823 transitions. [2021-11-09 08:44:04,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2021-11-09 08:44:04,477 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:44:04,477 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:44:04,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-09 08:44:04,478 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:44:04,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:44:04,478 INFO L85 PathProgramCache]: Analyzing trace with hash -872159705, now seen corresponding path program 1 times [2021-11-09 08:44:04,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:44:04,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223646117] [2021-11-09 08:44:04,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:44:04,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:44:04,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:44:04,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:44:04,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:44:04,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223646117] [2021-11-09 08:44:04,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223646117] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:44:04,806 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:44:04,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-09 08:44:04,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146007936] [2021-11-09 08:44:04,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 08:44:04,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:44:04,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 08:44:04,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-09 08:44:04,809 INFO L87 Difference]: Start difference. First operand 12982 states and 21823 transitions. Second operand has 7 states, 7 states have (on average 53.42857142857143) internal successors, (374), 7 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:44:06,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:44:06,226 INFO L93 Difference]: Finished difference Result 22382 states and 37768 transitions. [2021-11-09 08:44:06,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 08:44:06,227 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 53.42857142857143) internal successors, (374), 7 states have internal predecessors, (374), 0 states have call successors, (0), 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 374 [2021-11-09 08:44:06,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:44:06,281 INFO L225 Difference]: With dead ends: 22382 [2021-11-09 08:44:06,281 INFO L226 Difference]: Without dead ends: 18072 [2021-11-09 08:44:06,296 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-11-09 08:44:06,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18072 states. [2021-11-09 08:44:07,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18072 to 15854. [2021-11-09 08:44:07,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15854 states, 15853 states have (on average 1.6834037721566897) internal successors, (26687), 15853 states have internal predecessors, (26687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:44:07,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15854 states to 15854 states and 26687 transitions. [2021-11-09 08:44:07,506 INFO L78 Accepts]: Start accepts. Automaton has 15854 states and 26687 transitions. Word has length 374 [2021-11-09 08:44:07,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:44:07,507 INFO L470 AbstractCegarLoop]: Abstraction has 15854 states and 26687 transitions. [2021-11-09 08:44:07,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 53.42857142857143) internal successors, (374), 7 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:44:07,508 INFO L276 IsEmpty]: Start isEmpty. Operand 15854 states and 26687 transitions. [2021-11-09 08:44:07,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2021-11-09 08:44:07,527 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:44:07,527 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:44:07,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-09 08:44:07,528 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:44:07,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:44:07,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1195922690, now seen corresponding path program 1 times [2021-11-09 08:44:07,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:44:07,529 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932716564] [2021-11-09 08:44:07,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:44:07,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:44:07,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:44:07,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:44:07,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:44:07,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932716564] [2021-11-09 08:44:07,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932716564] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:44:07,760 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:44:07,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 08:44:07,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141144659] [2021-11-09 08:44:07,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:44:07,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:44:07,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:44:07,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:44:07,768 INFO L87 Difference]: Start difference. First operand 15854 states and 26687 transitions. Second operand has 4 states, 4 states have (on average 93.5) internal successors, (374), 4 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:44:09,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:44:09,294 INFO L93 Difference]: Finished difference Result 40840 states and 69021 transitions. [2021-11-09 08:44:09,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 08:44:09,294 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 93.5) internal successors, (374), 4 states have internal predecessors, (374), 0 states have call successors, (0), 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 374 [2021-11-09 08:44:09,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:44:09,402 INFO L225 Difference]: With dead ends: 40840 [2021-11-09 08:44:09,402 INFO L226 Difference]: Without dead ends: 28630 [2021-11-09 08:44:09,431 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:44:09,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28630 states. [2021-11-09 08:44:11,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28630 to 27112. [2021-11-09 08:44:11,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27112 states, 27111 states have (on average 1.6847405112316034) internal successors, (45675), 27111 states have internal predecessors, (45675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:44:11,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27112 states to 27112 states and 45675 transitions. [2021-11-09 08:44:11,590 INFO L78 Accepts]: Start accepts. Automaton has 27112 states and 45675 transitions. Word has length 374 [2021-11-09 08:44:11,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:44:11,591 INFO L470 AbstractCegarLoop]: Abstraction has 27112 states and 45675 transitions. [2021-11-09 08:44:11,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.5) internal successors, (374), 4 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:44:11,591 INFO L276 IsEmpty]: Start isEmpty. Operand 27112 states and 45675 transitions. [2021-11-09 08:44:11,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2021-11-09 08:44:11,614 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:44:11,615 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:44:11,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-09 08:44:11,615 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:44:11,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:44:11,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1916738941, now seen corresponding path program 1 times [2021-11-09 08:44:11,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:44:11,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144683186] [2021-11-09 08:44:11,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:44:11,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:44:11,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:44:11,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:44:11,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:44:11,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144683186] [2021-11-09 08:44:11,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144683186] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:44:11,854 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:44:11,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:44:11,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107043000] [2021-11-09 08:44:11,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:44:11,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:44:11,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:44:11,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:44:11,860 INFO L87 Difference]: Start difference. First operand 27112 states and 45675 transitions. Second operand has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:44:13,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:44:13,942 INFO L93 Difference]: Finished difference Result 56018 states and 94390 transitions. [2021-11-09 08:44:13,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:44:13,943 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 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 375 [2021-11-09 08:44:13,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:44:14,088 INFO L225 Difference]: With dead ends: 56018 [2021-11-09 08:44:14,089 INFO L226 Difference]: Without dead ends: 43012 [2021-11-09 08:44:14,125 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 [2021-11-09 08:44:14,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43012 states. [2021-11-09 08:44:16,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43012 to 42958. [2021-11-09 08:44:16,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42958 states, 42957 states have (on average 1.6821938217287054) internal successors, (72262), 42957 states have internal predecessors, (72262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:44:16,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42958 states to 42958 states and 72262 transitions. [2021-11-09 08:44:16,876 INFO L78 Accepts]: Start accepts. Automaton has 42958 states and 72262 transitions. Word has length 375 [2021-11-09 08:44:16,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:44:16,877 INFO L470 AbstractCegarLoop]: Abstraction has 42958 states and 72262 transitions. [2021-11-09 08:44:16,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:44:16,878 INFO L276 IsEmpty]: Start isEmpty. Operand 42958 states and 72262 transitions. [2021-11-09 08:44:16,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2021-11-09 08:44:16,905 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:44:16,905 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:44:16,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-09 08:44:16,906 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:44:16,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:44:16,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1151073458, now seen corresponding path program 1 times [2021-11-09 08:44:16,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:44:16,909 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594590462] [2021-11-09 08:44:16,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:44:16,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:44:16,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:44:17,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:44:17,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:44:17,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594590462] [2021-11-09 08:44:17,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594590462] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:44:17,119 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:44:17,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 08:44:17,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645059730] [2021-11-09 08:44:17,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:44:17,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:44:17,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:44:17,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:44:17,123 INFO L87 Difference]: Start difference. First operand 42958 states and 72262 transitions. Second operand has 4 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:44:19,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:44:19,506 INFO L93 Difference]: Finished difference Result 54544 states and 91921 transitions. [2021-11-09 08:44:19,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 08:44:19,506 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 0 states have call successors, (0), 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 375 [2021-11-09 08:44:19,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:44:19,630 INFO L225 Difference]: With dead ends: 54544 [2021-11-09 08:44:19,630 INFO L226 Difference]: Without dead ends: 48790 [2021-11-09 08:44:19,654 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:44:19,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48790 states. [2021-11-09 08:44:21,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48790 to 45852. [2021-11-09 08:44:21,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45852 states, 45851 states have (on average 1.6830385378726744) internal successors, (77169), 45851 states have internal predecessors, (77169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:44:21,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45852 states to 45852 states and 77169 transitions. [2021-11-09 08:44:21,988 INFO L78 Accepts]: Start accepts. Automaton has 45852 states and 77169 transitions. Word has length 375 [2021-11-09 08:44:21,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:44:21,988 INFO L470 AbstractCegarLoop]: Abstraction has 45852 states and 77169 transitions. [2021-11-09 08:44:21,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:44:21,989 INFO L276 IsEmpty]: Start isEmpty. Operand 45852 states and 77169 transitions. [2021-11-09 08:44:22,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2021-11-09 08:44:22,011 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:44:22,012 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:44:22,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-09 08:44:22,012 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:44:22,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:44:22,013 INFO L85 PathProgramCache]: Analyzing trace with hash 2039156963, now seen corresponding path program 1 times [2021-11-09 08:44:22,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:44:22,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19694188] [2021-11-09 08:44:22,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:44:22,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:44:22,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:44:22,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:44:22,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:44:22,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19694188] [2021-11-09 08:44:22,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19694188] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:44:22,473 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:44:22,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 08:44:22,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047994973] [2021-11-09 08:44:22,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:44:22,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:44:22,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:44:22,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:44:22,476 INFO L87 Difference]: Start difference. First operand 45852 states and 77169 transitions. Second operand has 4 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:44:27,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:44:27,020 INFO L93 Difference]: Finished difference Result 127080 states and 214535 transitions. [2021-11-09 08:44:27,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 08:44:27,025 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 0 states have call successors, (0), 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 375 [2021-11-09 08:44:27,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:44:27,217 INFO L225 Difference]: With dead ends: 127080 [2021-11-09 08:44:27,218 INFO L226 Difference]: Without dead ends: 87582 [2021-11-09 08:44:27,292 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:44:27,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87582 states. [2021-11-09 08:44:31,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87582 to 81576. [2021-11-09 08:44:31,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81576 states, 81575 states have (on average 1.6828562672387373) internal successors, (137279), 81575 states have internal predecessors, (137279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:44:31,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81576 states to 81576 states and 137279 transitions. [2021-11-09 08:44:31,961 INFO L78 Accepts]: Start accepts. Automaton has 81576 states and 137279 transitions. Word has length 375 [2021-11-09 08:44:31,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:44:31,962 INFO L470 AbstractCegarLoop]: Abstraction has 81576 states and 137279 transitions. [2021-11-09 08:44:31,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:44:31,963 INFO L276 IsEmpty]: Start isEmpty. Operand 81576 states and 137279 transitions. [2021-11-09 08:44:31,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2021-11-09 08:44:31,987 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:44:31,987 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:44:31,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-09 08:44:31,988 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:44:31,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:44:31,988 INFO L85 PathProgramCache]: Analyzing trace with hash 335011415, now seen corresponding path program 1 times [2021-11-09 08:44:31,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:44:31,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611531140] [2021-11-09 08:44:31,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:44:31,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:44:32,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:44:32,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:44:32,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:44:32,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611531140] [2021-11-09 08:44:32,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611531140] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:44:32,148 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:44:32,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:44:32,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652129495] [2021-11-09 08:44:32,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:44:32,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:44:32,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:44:32,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:44:32,151 INFO L87 Difference]: Start difference. First operand 81576 states and 137279 transitions. Second operand has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)