./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77983def-aab8-41d2-8c52-ead66f0c6092/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77983def-aab8-41d2-8c52-ead66f0c6092/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77983def-aab8-41d2-8c52-ead66f0c6092/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77983def-aab8-41d2-8c52-ead66f0c6092/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77983def-aab8-41d2-8c52-ead66f0c6092/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77983def-aab8-41d2-8c52-ead66f0c6092/bin/uautomizer-DrprNOufMa --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 44c406d67793fa594ef7527f23acdb47ae14bddc8229fabdd71855d9e982ff07 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 22:05:33,361 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 22:05:33,362 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 22:05:33,392 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 22:05:33,393 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 22:05:33,394 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 22:05:33,396 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 22:05:33,398 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 22:05:33,400 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 22:05:33,401 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 22:05:33,402 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 22:05:33,404 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 22:05:33,404 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 22:05:33,405 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 22:05:33,407 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 22:05:33,408 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 22:05:33,409 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 22:05:33,410 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 22:05:33,413 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 22:05:33,415 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 22:05:33,417 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 22:05:33,418 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 22:05:33,420 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 22:05:33,421 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 22:05:33,424 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 22:05:33,424 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 22:05:33,425 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 22:05:33,426 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 22:05:33,426 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 22:05:33,427 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 22:05:33,428 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 22:05:33,429 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 22:05:33,429 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 22:05:33,430 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 22:05:33,431 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 22:05:33,431 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 22:05:33,432 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 22:05:33,432 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 22:05:33,432 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 22:05:33,433 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 22:05:33,434 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 22:05:33,435 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77983def-aab8-41d2-8c52-ead66f0c6092/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 22:05:33,457 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 22:05:33,458 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 22:05:33,458 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 22:05:33,458 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 22:05:33,459 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 22:05:33,459 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 22:05:33,460 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 22:05:33,460 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 22:05:33,460 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 22:05:33,460 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 22:05:33,461 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 22:05:33,461 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 22:05:33,461 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 22:05:33,461 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 22:05:33,461 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 22:05:33,461 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 22:05:33,462 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 22:05:33,462 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 22:05:33,462 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 22:05:33,462 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 22:05:33,462 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 22:05:33,463 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 22:05:33,463 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 22:05:33,463 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 22:05:33,463 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:05:33,463 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 22:05:33,463 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 22:05:33,464 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 22:05:33,464 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 22:05:33,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 22:05:33,464 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 22:05:33,464 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 22:05:33,465 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 22:05:33,465 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 22:05:33,465 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_77983def-aab8-41d2-8c52-ead66f0c6092/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77983def-aab8-41d2-8c52-ead66f0c6092/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 44c406d67793fa594ef7527f23acdb47ae14bddc8229fabdd71855d9e982ff07 [2021-12-06 22:05:33,684 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 22:05:33,700 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 22:05:33,702 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 22:05:33,702 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 22:05:33,703 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 22:05:33,704 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77983def-aab8-41d2-8c52-ead66f0c6092/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2021-12-06 22:05:33,757 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77983def-aab8-41d2-8c52-ead66f0c6092/bin/uautomizer-DrprNOufMa/data/067b9a57e/eca3b537ac884db2bbddf9d5fde08857/FLAG3edb19881 [2021-12-06 22:05:34,292 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 22:05:34,292 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77983def-aab8-41d2-8c52-ead66f0c6092/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2021-12-06 22:05:34,309 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77983def-aab8-41d2-8c52-ead66f0c6092/bin/uautomizer-DrprNOufMa/data/067b9a57e/eca3b537ac884db2bbddf9d5fde08857/FLAG3edb19881 [2021-12-06 22:05:34,781 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77983def-aab8-41d2-8c52-ead66f0c6092/bin/uautomizer-DrprNOufMa/data/067b9a57e/eca3b537ac884db2bbddf9d5fde08857 [2021-12-06 22:05:34,784 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 22:05:34,786 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 22:05:34,787 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 22:05:34,787 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 22:05:34,790 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 22:05:34,791 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:05:34" (1/1) ... [2021-12-06 22:05:34,792 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1454e85b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:05:34, skipping insertion in model container [2021-12-06 22:05:34,792 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:05:34" (1/1) ... [2021-12-06 22:05:34,798 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 22:05:34,878 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 22:05:35,320 WARN L230 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_77983def-aab8-41d2-8c52-ead66f0c6092/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c[35223,35236] [2021-12-06 22:05:35,469 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:05:35,481 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 22:05:35,717 WARN L230 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_77983def-aab8-41d2-8c52-ead66f0c6092/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c[35223,35236] [2021-12-06 22:05:35,840 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:05:35,854 INFO L208 MainTranslator]: Completed translation [2021-12-06 22:05:35,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:05:35 WrapperNode [2021-12-06 22:05:35,855 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 22:05:35,856 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 22:05:35,856 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 22:05:35,856 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 22:05:35,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:05:35" (1/1) ... [2021-12-06 22:05:35,882 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:05:35" (1/1) ... [2021-12-06 22:05:35,961 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2934 [2021-12-06 22:05:35,962 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 22:05:35,962 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 22:05:35,963 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 22:05:35,963 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 22:05:35,971 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:05:35" (1/1) ... [2021-12-06 22:05:35,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:05:35" (1/1) ... [2021-12-06 22:05:35,979 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:05:35" (1/1) ... [2021-12-06 22:05:35,980 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:05:35" (1/1) ... [2021-12-06 22:05:36,009 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:05:35" (1/1) ... [2021-12-06 22:05:36,036 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:05:35" (1/1) ... [2021-12-06 22:05:36,042 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:05:35" (1/1) ... [2021-12-06 22:05:36,054 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 22:05:36,055 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 22:05:36,055 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 22:05:36,055 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 22:05:36,056 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:05:35" (1/1) ... [2021-12-06 22:05:36,064 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:05:36,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77983def-aab8-41d2-8c52-ead66f0c6092/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:05:36,088 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77983def-aab8-41d2-8c52-ead66f0c6092/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 22:05:36,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77983def-aab8-41d2-8c52-ead66f0c6092/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 22:05:36,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 22:05:36,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 22:05:36,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 22:05:36,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 22:05:36,287 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 22:05:36,289 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 22:05:37,707 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 22:05:37,721 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 22:05:37,721 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-06 22:05:37,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:05:37 BoogieIcfgContainer [2021-12-06 22:05:37,724 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 22:05:37,725 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 22:05:37,725 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 22:05:37,727 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 22:05:37,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 10:05:34" (1/3) ... [2021-12-06 22:05:37,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3244cb53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:05:37, skipping insertion in model container [2021-12-06 22:05:37,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:05:35" (2/3) ... [2021-12-06 22:05:37,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3244cb53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:05:37, skipping insertion in model container [2021-12-06 22:05:37,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:05:37" (3/3) ... [2021-12-06 22:05:37,729 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2021-12-06 22:05:37,734 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 22:05:37,734 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 22:05:37,773 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 22:05:37,778 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 [2021-12-06 22:05:37,778 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 22:05:37,805 INFO L276 IsEmpty]: Start isEmpty. Operand has 790 states, 788 states have (on average 1.782994923857868) internal successors, (1405), 789 states have internal predecessors, (1405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:05:37,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2021-12-06 22:05:37,842 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:05:37,844 INFO L514 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] [2021-12-06 22:05:37,844 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:05:37,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:05:37,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1016279858, now seen corresponding path program 1 times [2021-12-06 22:05:37,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:05:37,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788544090] [2021-12-06 22:05:37,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:05:37,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:05:38,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:05:38,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:05:38,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:05:38,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788544090] [2021-12-06 22:05:38,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788544090] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:05:38,476 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:05:38,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:05:38,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685645890] [2021-12-06 22:05:38,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:05:38,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:05:38,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:05:38,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:05:38,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:05:38,516 INFO L87 Difference]: Start difference. First operand has 790 states, 788 states have (on average 1.782994923857868) internal successors, (1405), 789 states have internal predecessors, (1405), 0 states have call successors, (0), 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 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:05:38,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:05:38,787 INFO L93 Difference]: Finished difference Result 1423 states and 2503 transitions. [2021-12-06 22:05:38,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:05:38,789 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 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 320 [2021-12-06 22:05:38,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:05:38,808 INFO L225 Difference]: With dead ends: 1423 [2021-12-06 22:05:38,808 INFO L226 Difference]: Without dead ends: 1253 [2021-12-06 22:05:38,812 INFO L932 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 [2021-12-06 22:05:38,815 INFO L933 BasicCegarLoop]: 1344 mSDtfsCounter, 831 mSDsluCounter, 1080 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 2424 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:05:38,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [831 Valid, 2424 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:05:38,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1253 states. [2021-12-06 22:05:38,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1253 to 1251. [2021-12-06 22:05:38,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1251 states, 1250 states have (on average 1.5648) internal successors, (1956), 1250 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:05:38,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1251 states to 1251 states and 1956 transitions. [2021-12-06 22:05:38,918 INFO L78 Accepts]: Start accepts. Automaton has 1251 states and 1956 transitions. Word has length 320 [2021-12-06 22:05:38,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:05:38,920 INFO L470 AbstractCegarLoop]: Abstraction has 1251 states and 1956 transitions. [2021-12-06 22:05:38,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:05:38,921 INFO L276 IsEmpty]: Start isEmpty. Operand 1251 states and 1956 transitions. [2021-12-06 22:05:38,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2021-12-06 22:05:38,929 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:05:38,929 INFO L514 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] [2021-12-06 22:05:38,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 22:05:38,930 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:05:38,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:05:38,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1186607043, now seen corresponding path program 1 times [2021-12-06 22:05:38,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:05:38,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100103874] [2021-12-06 22:05:38,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:05:38,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:05:39,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:05:39,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:05:39,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:05:39,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100103874] [2021-12-06 22:05:39,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100103874] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:05:39,540 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:05:39,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 22:05:39,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714077080] [2021-12-06 22:05:39,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:05:39,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:05:39,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:05:39,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:05:39,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:05:39,545 INFO L87 Difference]: Start difference. First operand 1251 states and 1956 transitions. Second operand has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:05:39,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:05:39,780 INFO L93 Difference]: Finished difference Result 3691 states and 5763 transitions. [2021-12-06 22:05:39,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 22:05:39,781 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 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 320 [2021-12-06 22:05:39,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:05:39,799 INFO L225 Difference]: With dead ends: 3691 [2021-12-06 22:05:39,799 INFO L226 Difference]: Without dead ends: 2451 [2021-12-06 22:05:39,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:05:39,806 INFO L933 BasicCegarLoop]: 1862 mSDtfsCounter, 2839 mSDsluCounter, 1158 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2839 SdHoareTripleChecker+Valid, 3020 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:05:39,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2839 Valid, 3020 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:05:39,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2451 states. [2021-12-06 22:05:39,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2451 to 2449. [2021-12-06 22:05:39,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2449 states, 2448 states have (on average 1.5543300653594772) internal successors, (3805), 2448 states have internal predecessors, (3805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:05:39,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2449 states to 2449 states and 3805 transitions. [2021-12-06 22:05:39,981 INFO L78 Accepts]: Start accepts. Automaton has 2449 states and 3805 transitions. Word has length 320 [2021-12-06 22:05:39,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:05:39,982 INFO L470 AbstractCegarLoop]: Abstraction has 2449 states and 3805 transitions. [2021-12-06 22:05:39,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:05:39,982 INFO L276 IsEmpty]: Start isEmpty. Operand 2449 states and 3805 transitions. [2021-12-06 22:05:39,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2021-12-06 22:05:39,992 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:05:39,992 INFO L514 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] [2021-12-06 22:05:39,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 22:05:39,993 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:05:39,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:05:39,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1005675603, now seen corresponding path program 1 times [2021-12-06 22:05:39,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:05:39,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035992492] [2021-12-06 22:05:39,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:05:39,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:05:40,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:05:40,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:05:40,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:05:40,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035992492] [2021-12-06 22:05:40,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035992492] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:05:40,154 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:05:40,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:05:40,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145199362] [2021-12-06 22:05:40,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:05:40,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:05:40,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:05:40,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:05:40,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:05:40,156 INFO L87 Difference]: Start difference. First operand 2449 states and 3805 transitions. Second operand has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:05:40,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:05:40,455 INFO L93 Difference]: Finished difference Result 7128 states and 11035 transitions. [2021-12-06 22:05:40,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:05:40,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 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 322 [2021-12-06 22:05:40,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:05:40,486 INFO L225 Difference]: With dead ends: 7128 [2021-12-06 22:05:40,486 INFO L226 Difference]: Without dead ends: 4804 [2021-12-06 22:05:40,490 INFO L932 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 [2021-12-06 22:05:40,492 INFO L933 BasicCegarLoop]: 2387 mSDtfsCounter, 1090 mSDsluCounter, 1168 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1090 SdHoareTripleChecker+Valid, 3555 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:05:40,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1090 Valid, 3555 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:05:40,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4804 states. [2021-12-06 22:05:40,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4804 to 4802. [2021-12-06 22:05:40,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4802 states, 4801 states have (on average 1.545303061862112) internal successors, (7419), 4801 states have internal predecessors, (7419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:05:40,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4802 states to 4802 states and 7419 transitions. [2021-12-06 22:05:40,757 INFO L78 Accepts]: Start accepts. Automaton has 4802 states and 7419 transitions. Word has length 322 [2021-12-06 22:05:40,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:05:40,757 INFO L470 AbstractCegarLoop]: Abstraction has 4802 states and 7419 transitions. [2021-12-06 22:05:40,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:05:40,758 INFO L276 IsEmpty]: Start isEmpty. Operand 4802 states and 7419 transitions. [2021-12-06 22:05:40,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2021-12-06 22:05:40,768 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:05:40,768 INFO L514 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] [2021-12-06 22:05:40,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 22:05:40,769 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:05:40,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:05:40,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1227155250, now seen corresponding path program 1 times [2021-12-06 22:05:40,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:05:40,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248338293] [2021-12-06 22:05:40,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:05:40,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:05:40,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:05:40,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:05:40,845 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:05:40,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248338293] [2021-12-06 22:05:40,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248338293] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:05:40,845 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:05:40,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:05:40,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850313170] [2021-12-06 22:05:40,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:05:40,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:05:40,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:05:40,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:05:40,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:05:40,849 INFO L87 Difference]: Start difference. First operand 4802 states and 7419 transitions. Second operand has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:05:41,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:05:41,317 INFO L93 Difference]: Finished difference Result 14339 states and 22141 transitions. [2021-12-06 22:05:41,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:05:41,318 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 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 322 [2021-12-06 22:05:41,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:05:41,377 INFO L225 Difference]: With dead ends: 14339 [2021-12-06 22:05:41,378 INFO L226 Difference]: Without dead ends: 9575 [2021-12-06 22:05:41,388 INFO L932 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 [2021-12-06 22:05:41,389 INFO L933 BasicCegarLoop]: 2442 mSDtfsCounter, 1218 mSDsluCounter, 1219 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1218 SdHoareTripleChecker+Valid, 3661 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:05:41,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1218 Valid, 3661 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:05:41,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9575 states. [2021-12-06 22:05:41,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9575 to 4821. [2021-12-06 22:05:41,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4821 states, 4820 states have (on average 1.5450207468879669) internal successors, (7447), 4820 states have internal predecessors, (7447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:05:41,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4821 states to 4821 states and 7447 transitions. [2021-12-06 22:05:41,736 INFO L78 Accepts]: Start accepts. Automaton has 4821 states and 7447 transitions. Word has length 322 [2021-12-06 22:05:41,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:05:41,736 INFO L470 AbstractCegarLoop]: Abstraction has 4821 states and 7447 transitions. [2021-12-06 22:05:41,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:05:41,737 INFO L276 IsEmpty]: Start isEmpty. Operand 4821 states and 7447 transitions. [2021-12-06 22:05:41,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2021-12-06 22:05:41,746 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:05:41,746 INFO L514 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] [2021-12-06 22:05:41,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 22:05:41,746 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:05:41,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:05:41,747 INFO L85 PathProgramCache]: Analyzing trace with hash 706446803, now seen corresponding path program 1 times [2021-12-06 22:05:41,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:05:41,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709646753] [2021-12-06 22:05:41,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:05:41,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:05:41,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:05:41,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:05:41,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:05:41,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709646753] [2021-12-06 22:05:41,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709646753] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:05:41,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:05:41,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:05:41,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936133646] [2021-12-06 22:05:41,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:05:41,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:05:41,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:05:41,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:05:41,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:05:41,822 INFO L87 Difference]: Start difference. First operand 4821 states and 7447 transitions. Second operand has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:05:42,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:05:42,235 INFO L93 Difference]: Finished difference Result 14358 states and 22162 transitions. [2021-12-06 22:05:42,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:05:42,235 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 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 323 [2021-12-06 22:05:42,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:05:42,287 INFO L225 Difference]: With dead ends: 14358 [2021-12-06 22:05:42,287 INFO L226 Difference]: Without dead ends: 9593 [2021-12-06 22:05:42,296 INFO L932 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 [2021-12-06 22:05:42,297 INFO L933 BasicCegarLoop]: 2442 mSDtfsCounter, 1213 mSDsluCounter, 1219 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1213 SdHoareTripleChecker+Valid, 3661 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:05:42,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1213 Valid, 3661 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:05:42,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9593 states. [2021-12-06 22:05:42,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9593 to 4839. [2021-12-06 22:05:42,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4839 states, 4838 states have (on average 1.5436130632492766) internal successors, (7468), 4838 states have internal predecessors, (7468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:05:42,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4839 states to 4839 states and 7468 transitions. [2021-12-06 22:05:42,643 INFO L78 Accepts]: Start accepts. Automaton has 4839 states and 7468 transitions. Word has length 323 [2021-12-06 22:05:42,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:05:42,644 INFO L470 AbstractCegarLoop]: Abstraction has 4839 states and 7468 transitions. [2021-12-06 22:05:42,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:05:42,644 INFO L276 IsEmpty]: Start isEmpty. Operand 4839 states and 7468 transitions. [2021-12-06 22:05:42,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2021-12-06 22:05:42,655 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:05:42,655 INFO L514 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] [2021-12-06 22:05:42,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 22:05:42,655 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:05:42,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:05:42,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1589061576, now seen corresponding path program 1 times [2021-12-06 22:05:42,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:05:42,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686550619] [2021-12-06 22:05:42,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:05:42,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:05:42,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:05:42,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:05:42,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:05:42,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686550619] [2021-12-06 22:05:42,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686550619] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:05:42,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:05:42,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:05:42,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812631449] [2021-12-06 22:05:42,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:05:42,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:05:42,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:05:42,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:05:42,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:05:42,787 INFO L87 Difference]: Start difference. First operand 4839 states and 7468 transitions. Second operand has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:05:43,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:05:43,257 INFO L93 Difference]: Finished difference Result 13994 states and 21517 transitions. [2021-12-06 22:05:43,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:05:43,257 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 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 324 [2021-12-06 22:05:43,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:05:43,284 INFO L225 Difference]: With dead ends: 13994 [2021-12-06 22:05:43,284 INFO L226 Difference]: Without dead ends: 9396 [2021-12-06 22:05:43,292 INFO L932 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 [2021-12-06 22:05:43,293 INFO L933 BasicCegarLoop]: 2394 mSDtfsCounter, 1084 mSDsluCounter, 1168 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1084 SdHoareTripleChecker+Valid, 3562 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:05:43,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1084 Valid, 3562 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:05:43,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9396 states. [2021-12-06 22:05:43,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9396 to 9394. [2021-12-06 22:05:43,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9394 states, 9393 states have (on average 1.532630682423081) internal successors, (14396), 9393 states have internal predecessors, (14396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:05:43,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9394 states to 9394 states and 14396 transitions. [2021-12-06 22:05:43,744 INFO L78 Accepts]: Start accepts. Automaton has 9394 states and 14396 transitions. Word has length 324 [2021-12-06 22:05:43,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:05:43,744 INFO L470 AbstractCegarLoop]: Abstraction has 9394 states and 14396 transitions. [2021-12-06 22:05:43,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:05:43,745 INFO L276 IsEmpty]: Start isEmpty. Operand 9394 states and 14396 transitions. [2021-12-06 22:05:43,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2021-12-06 22:05:43,763 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:05:43,764 INFO L514 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] [2021-12-06 22:05:43,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 22:05:43,764 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:05:43,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:05:43,765 INFO L85 PathProgramCache]: Analyzing trace with hash -899885403, now seen corresponding path program 1 times [2021-12-06 22:05:43,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:05:43,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609564707] [2021-12-06 22:05:43,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:05:43,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:05:43,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:05:44,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:05:44,085 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:05:44,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609564707] [2021-12-06 22:05:44,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609564707] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:05:44,085 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:05:44,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 22:05:44,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660756868] [2021-12-06 22:05:44,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:05:44,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:05:44,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:05:44,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:05:44,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:05:44,088 INFO L87 Difference]: Start difference. First operand 9394 states and 14396 transitions. Second operand has 5 states, 5 states have (on average 64.8) internal successors, (324), 5 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:05:44,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:05:44,777 INFO L93 Difference]: Finished difference Result 27524 states and 42093 transitions. [2021-12-06 22:05:44,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 22:05:44,778 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 64.8) internal successors, (324), 5 states have internal predecessors, (324), 0 states have call successors, (0), 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 324 [2021-12-06 22:05:44,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:05:44,819 INFO L225 Difference]: With dead ends: 27524 [2021-12-06 22:05:44,819 INFO L226 Difference]: Without dead ends: 18185 [2021-12-06 22:05:44,832 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:05:44,833 INFO L933 BasicCegarLoop]: 1906 mSDtfsCounter, 3472 mSDsluCounter, 1158 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3472 SdHoareTripleChecker+Valid, 3064 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:05:44,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3472 Valid, 3064 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:05:44,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18185 states. [2021-12-06 22:05:45,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18185 to 18183. [2021-12-06 22:05:45,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18183 states, 18182 states have (on average 1.51979980200198) internal successors, (27633), 18182 states have internal predecessors, (27633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:05:45,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18183 states to 18183 states and 27633 transitions. [2021-12-06 22:05:45,523 INFO L78 Accepts]: Start accepts. Automaton has 18183 states and 27633 transitions. Word has length 324 [2021-12-06 22:05:45,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:05:45,524 INFO L470 AbstractCegarLoop]: Abstraction has 18183 states and 27633 transitions. [2021-12-06 22:05:45,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 64.8) internal successors, (324), 5 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:05:45,524 INFO L276 IsEmpty]: Start isEmpty. Operand 18183 states and 27633 transitions. [2021-12-06 22:05:45,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2021-12-06 22:05:45,544 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:05:45,544 INFO L514 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] [2021-12-06 22:05:45,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 22:05:45,544 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:05:45,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:05:45,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1502929468, now seen corresponding path program 1 times [2021-12-06 22:05:45,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:05:45,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464606956] [2021-12-06 22:05:45,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:05:45,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:05:45,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:05:45,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:05:45,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:05:45,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464606956] [2021-12-06 22:05:45,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464606956] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:05:45,825 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:05:45,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 22:05:45,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910266708] [2021-12-06 22:05:45,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:05:45,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:05:45,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:05:45,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:05:45,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:05:45,827 INFO L87 Difference]: Start difference. First operand 18183 states and 27633 transitions. Second operand has 5 states, 5 states have (on average 65.2) internal successors, (326), 5 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:05:47,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:05:47,015 INFO L93 Difference]: Finished difference Result 53470 states and 81104 transitions. [2021-12-06 22:05:47,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 22:05:47,016 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 65.2) internal successors, (326), 5 states have internal predecessors, (326), 0 states have call successors, (0), 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 326 [2021-12-06 22:05:47,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:05:47,063 INFO L225 Difference]: With dead ends: 53470 [2021-12-06 22:05:47,064 INFO L226 Difference]: Without dead ends: 35404 [2021-12-06 22:05:47,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:05:47,082 INFO L933 BasicCegarLoop]: 1895 mSDtfsCounter, 3976 mSDsluCounter, 1158 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3976 SdHoareTripleChecker+Valid, 3053 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:05:47,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3976 Valid, 3053 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:05:47,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35404 states. [2021-12-06 22:05:48,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35404 to 35402. [2021-12-06 22:05:48,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35402 states, 35401 states have (on average 1.5076410270896303) internal successors, (53372), 35401 states have internal predecessors, (53372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:05:48,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35402 states to 35402 states and 53372 transitions. [2021-12-06 22:05:48,360 INFO L78 Accepts]: Start accepts. Automaton has 35402 states and 53372 transitions. Word has length 326 [2021-12-06 22:05:48,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:05:48,361 INFO L470 AbstractCegarLoop]: Abstraction has 35402 states and 53372 transitions. [2021-12-06 22:05:48,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.2) internal successors, (326), 5 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:05:48,361 INFO L276 IsEmpty]: Start isEmpty. Operand 35402 states and 53372 transitions. [2021-12-06 22:05:48,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2021-12-06 22:05:48,399 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:05:48,399 INFO L514 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] [2021-12-06 22:05:48,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 22:05:48,399 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:05:48,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:05:48,400 INFO L85 PathProgramCache]: Analyzing trace with hash -854896249, now seen corresponding path program 1 times [2021-12-06 22:05:48,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:05:48,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074078910] [2021-12-06 22:05:48,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:05:48,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:05:48,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:05:48,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:05:48,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:05:48,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074078910] [2021-12-06 22:05:48,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074078910] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:05:48,782 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:05:48,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 22:05:48,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779960575] [2021-12-06 22:05:48,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:05:48,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:05:48,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:05:48,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:05:48,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:05:48,784 INFO L87 Difference]: Start difference. First operand 35402 states and 53372 transitions. Second operand has 4 states, 4 states have (on average 81.5) internal successors, (326), 4 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:05:51,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:05:51,245 INFO L93 Difference]: Finished difference Result 104364 states and 157065 transitions. [2021-12-06 22:05:51,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 22:05:51,245 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 81.5) internal successors, (326), 4 states have internal predecessors, (326), 0 states have call successors, (0), 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 326 [2021-12-06 22:05:51,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:05:51,327 INFO L225 Difference]: With dead ends: 104364 [2021-12-06 22:05:51,327 INFO L226 Difference]: Without dead ends: 69192 [2021-12-06 22:05:51,362 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:05:51,362 INFO L933 BasicCegarLoop]: 1940 mSDtfsCounter, 2681 mSDsluCounter, 1158 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2681 SdHoareTripleChecker+Valid, 3098 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:05:51,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2681 Valid, 3098 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:05:51,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69192 states. [2021-12-06 22:05:53,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69192 to 69190. [2021-12-06 22:05:53,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69190 states, 69189 states have (on average 1.4956134645680672) internal successors, (103480), 69189 states have internal predecessors, (103480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:05:53,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69190 states to 69190 states and 103480 transitions. [2021-12-06 22:05:53,881 INFO L78 Accepts]: Start accepts. Automaton has 69190 states and 103480 transitions. Word has length 326 [2021-12-06 22:05:53,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:05:53,881 INFO L470 AbstractCegarLoop]: Abstraction has 69190 states and 103480 transitions. [2021-12-06 22:05:53,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.5) internal successors, (326), 4 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:05:53,882 INFO L276 IsEmpty]: Start isEmpty. Operand 69190 states and 103480 transitions. [2021-12-06 22:05:53,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2021-12-06 22:05:53,935 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:05:53,935 INFO L514 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] [2021-12-06 22:05:53,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 22:05:53,936 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:05:53,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:05:53,936 INFO L85 PathProgramCache]: Analyzing trace with hash -585132120, now seen corresponding path program 1 times [2021-12-06 22:05:53,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:05:53,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609889584] [2021-12-06 22:05:53,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:05:53,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:05:53,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:05:54,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:05:54,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:05:54,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609889584] [2021-12-06 22:05:54,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609889584] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:05:54,024 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:05:54,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:05:54,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417565190] [2021-12-06 22:05:54,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:05:54,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:05:54,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:05:54,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:05:54,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:05:54,026 INFO L87 Difference]: Start difference. First operand 69190 states and 103480 transitions. Second operand has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:05:58,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:05:58,965 INFO L93 Difference]: Finished difference Result 203290 states and 303280 transitions. [2021-12-06 22:05:58,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:05:58,966 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 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 328 [2021-12-06 22:05:58,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:05:59,123 INFO L225 Difference]: With dead ends: 203290 [2021-12-06 22:05:59,123 INFO L226 Difference]: Without dead ends: 135480 [2021-12-06 22:05:59,162 INFO L932 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 [2021-12-06 22:05:59,163 INFO L933 BasicCegarLoop]: 2346 mSDtfsCounter, 1064 mSDsluCounter, 1168 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1064 SdHoareTripleChecker+Valid, 3514 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:05:59,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1064 Valid, 3514 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:05:59,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135480 states. [2021-12-06 22:06:04,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135480 to 135478. [2021-12-06 22:06:04,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135478 states, 135477 states have (on average 1.4842224141367168) internal successors, (201078), 135477 states have internal predecessors, (201078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:06:04,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135478 states to 135478 states and 201078 transitions. [2021-12-06 22:06:04,315 INFO L78 Accepts]: Start accepts. Automaton has 135478 states and 201078 transitions. Word has length 328 [2021-12-06 22:06:04,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:06:04,316 INFO L470 AbstractCegarLoop]: Abstraction has 135478 states and 201078 transitions. [2021-12-06 22:06:04,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:06:04,316 INFO L276 IsEmpty]: Start isEmpty. Operand 135478 states and 201078 transitions. [2021-12-06 22:06:04,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2021-12-06 22:06:04,423 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:06:04,423 INFO L514 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] [2021-12-06 22:06:04,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 22:06:04,423 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:06:04,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:06:04,424 INFO L85 PathProgramCache]: Analyzing trace with hash -710792467, now seen corresponding path program 1 times [2021-12-06 22:06:04,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:06:04,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180115083] [2021-12-06 22:06:04,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:06:04,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:06:04,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:04,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:06:04,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:06:04,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180115083] [2021-12-06 22:06:04,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180115083] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:06:04,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:06:04,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:06:04,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277338452] [2021-12-06 22:06:04,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:06:04,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:06:04,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:06:04,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:06:04,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:06:04,490 INFO L87 Difference]: Start difference. First operand 135478 states and 201078 transitions. Second operand has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:06:14,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:06:14,039 INFO L93 Difference]: Finished difference Result 405310 states and 601410 transitions. [2021-12-06 22:06:14,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:06:14,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 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 328 [2021-12-06 22:06:14,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:06:14,413 INFO L225 Difference]: With dead ends: 405310 [2021-12-06 22:06:14,413 INFO L226 Difference]: Without dead ends: 270494 [2021-12-06 22:06:14,512 INFO L932 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 [2021-12-06 22:06:14,513 INFO L933 BasicCegarLoop]: 2409 mSDtfsCounter, 1185 mSDsluCounter, 1219 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1185 SdHoareTripleChecker+Valid, 3628 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:06:14,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1185 Valid, 3628 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:06:14,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270494 states. [2021-12-06 22:06:21,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270494 to 135688. [2021-12-06 22:06:21,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135688 states, 135687 states have (on average 1.4842247230759027) internal successors, (201390), 135687 states have internal predecessors, (201390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:06:21,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135688 states to 135688 states and 201390 transitions. [2021-12-06 22:06:21,551 INFO L78 Accepts]: Start accepts. Automaton has 135688 states and 201390 transitions. Word has length 328 [2021-12-06 22:06:21,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:06:21,552 INFO L470 AbstractCegarLoop]: Abstraction has 135688 states and 201390 transitions. [2021-12-06 22:06:21,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:06:21,552 INFO L276 IsEmpty]: Start isEmpty. Operand 135688 states and 201390 transitions. [2021-12-06 22:06:21,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2021-12-06 22:06:21,655 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:06:21,655 INFO L514 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] [2021-12-06 22:06:21,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 22:06:21,656 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:06:21,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:06:21,656 INFO L85 PathProgramCache]: Analyzing trace with hash -772630862, now seen corresponding path program 1 times [2021-12-06 22:06:21,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:06:21,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469047728] [2021-12-06 22:06:21,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:06:21,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:06:21,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:21,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:06:21,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:06:21,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469047728] [2021-12-06 22:06:21,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469047728] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:06:21,704 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:06:21,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:06:21,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429898821] [2021-12-06 22:06:21,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:06:21,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:06:21,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:06:21,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:06:21,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:06:21,705 INFO L87 Difference]: Start difference. First operand 135688 states and 201390 transitions. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:06:32,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:06:32,057 INFO L93 Difference]: Finished difference Result 405498 states and 601616 transitions. [2021-12-06 22:06:32,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:06:32,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 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 329 [2021-12-06 22:06:32,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:06:32,398 INFO L225 Difference]: With dead ends: 405498 [2021-12-06 22:06:32,398 INFO L226 Difference]: Without dead ends: 270672 [2021-12-06 22:06:32,477 INFO L932 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 [2021-12-06 22:06:32,478 INFO L933 BasicCegarLoop]: 2409 mSDtfsCounter, 1180 mSDsluCounter, 1219 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1180 SdHoareTripleChecker+Valid, 3628 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:06:32,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1180 Valid, 3628 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:06:32,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270672 states. [2021-12-06 22:06:39,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270672 to 135918. [2021-12-06 22:06:39,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135918 states, 135917 states have (on average 1.483655466203639) internal successors, (201654), 135917 states have internal predecessors, (201654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:06:40,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135918 states to 135918 states and 201654 transitions. [2021-12-06 22:06:40,152 INFO L78 Accepts]: Start accepts. Automaton has 135918 states and 201654 transitions. Word has length 329 [2021-12-06 22:06:40,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:06:40,152 INFO L470 AbstractCegarLoop]: Abstraction has 135918 states and 201654 transitions. [2021-12-06 22:06:40,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:06:40,153 INFO L276 IsEmpty]: Start isEmpty. Operand 135918 states and 201654 transitions. [2021-12-06 22:06:40,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2021-12-06 22:06:40,430 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:06:40,430 INFO L514 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] [2021-12-06 22:06:40,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 22:06:40,430 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:06:40,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:06:40,431 INFO L85 PathProgramCache]: Analyzing trace with hash 2027125024, now seen corresponding path program 1 times [2021-12-06 22:06:40,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:06:40,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652141682] [2021-12-06 22:06:40,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:06:40,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:06:40,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:40,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:06:40,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:06:40,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652141682] [2021-12-06 22:06:40,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652141682] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:06:40,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:06:40,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 22:06:40,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825245866] [2021-12-06 22:06:40,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:06:40,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:06:40,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:06:40,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:06:40,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:06:40,669 INFO L87 Difference]: Start difference. First operand 135918 states and 201654 transitions. Second operand has 5 states, 5 states have (on average 66.0) internal successors, (330), 5 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:06:52,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:06:52,302 INFO L93 Difference]: Finished difference Result 399549 states and 591511 transitions. [2021-12-06 22:06:52,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 22:06:52,303 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 66.0) internal successors, (330), 5 states have internal predecessors, (330), 0 states have call successors, (0), 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 330 [2021-12-06 22:06:52,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:06:52,645 INFO L225 Difference]: With dead ends: 399549 [2021-12-06 22:06:52,646 INFO L226 Difference]: Without dead ends: 264212 [2021-12-06 22:06:52,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:06:52,738 INFO L933 BasicCegarLoop]: 1833 mSDtfsCounter, 3978 mSDsluCounter, 1158 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3978 SdHoareTripleChecker+Valid, 2991 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:06:52,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3978 Valid, 2991 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:06:53,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264212 states. [2021-12-06 22:07:05,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264212 to 264210. [2021-12-06 22:07:05,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264210 states, 264209 states have (on average 1.4704571002501807) internal successors, (388508), 264209 states have internal predecessors, (388508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:07:06,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264210 states to 264210 states and 388508 transitions. [2021-12-06 22:07:06,668 INFO L78 Accepts]: Start accepts. Automaton has 264210 states and 388508 transitions. Word has length 330 [2021-12-06 22:07:06,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:07:06,669 INFO L470 AbstractCegarLoop]: Abstraction has 264210 states and 388508 transitions. [2021-12-06 22:07:06,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 66.0) internal successors, (330), 5 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:07:06,669 INFO L276 IsEmpty]: Start isEmpty. Operand 264210 states and 388508 transitions. [2021-12-06 22:07:06,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2021-12-06 22:07:06,885 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:07:06,886 INFO L514 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] [2021-12-06 22:07:06,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 22:07:06,886 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:07:06,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:07:06,886 INFO L85 PathProgramCache]: Analyzing trace with hash 2131703408, now seen corresponding path program 1 times [2021-12-06 22:07:06,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:07:06,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423617856] [2021-12-06 22:07:06,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:07:06,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:07:06,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:07,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:07:07,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:07:07,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423617856] [2021-12-06 22:07:07,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423617856] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:07:07,040 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:07:07,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 22:07:07,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803565667] [2021-12-06 22:07:07,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:07:07,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:07:07,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:07:07,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:07:07,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:07:07,042 INFO L87 Difference]: Start difference. First operand 264210 states and 388508 transitions. Second operand has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:07:21,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:07:21,454 INFO L93 Difference]: Finished difference Result 548615 states and 806570 transitions. [2021-12-06 22:07:21,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 22:07:21,454 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 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 332 [2021-12-06 22:07:21,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:07:21,821 INFO L225 Difference]: With dead ends: 548615 [2021-12-06 22:07:21,821 INFO L226 Difference]: Without dead ends: 286023 [2021-12-06 22:07:21,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:07:21,949 INFO L933 BasicCegarLoop]: 1741 mSDtfsCounter, 2833 mSDsluCounter, 1158 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2833 SdHoareTripleChecker+Valid, 2899 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:07:21,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2833 Valid, 2899 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:07:22,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286023 states. [2021-12-06 22:07:35,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286023 to 264445. [2021-12-06 22:07:36,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264445 states, 264444 states have (on average 1.4698537308466064) internal successors, (388694), 264444 states have internal predecessors, (388694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:07:36,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264445 states to 264445 states and 388694 transitions. [2021-12-06 22:07:36,651 INFO L78 Accepts]: Start accepts. Automaton has 264445 states and 388694 transitions. Word has length 332 [2021-12-06 22:07:36,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:07:36,651 INFO L470 AbstractCegarLoop]: Abstraction has 264445 states and 388694 transitions. [2021-12-06 22:07:36,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:07:36,651 INFO L276 IsEmpty]: Start isEmpty. Operand 264445 states and 388694 transitions. [2021-12-06 22:07:36,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2021-12-06 22:07:36,876 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:07:36,876 INFO L514 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] [2021-12-06 22:07:36,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 22:07:36,877 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:07:36,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:07:36,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1894625523, now seen corresponding path program 1 times [2021-12-06 22:07:36,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:07:36,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998877472] [2021-12-06 22:07:36,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:07:36,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:07:36,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:36,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:07:36,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:07:36,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998877472] [2021-12-06 22:07:36,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998877472] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:07:36,934 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:07:36,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:07:36,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785632484] [2021-12-06 22:07:36,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:07:36,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:07:36,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:07:36,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:07:36,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:07:36,936 INFO L87 Difference]: Start difference. First operand 264445 states and 388694 transitions. Second operand has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:08:03,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:08:03,118 INFO L93 Difference]: Finished difference Result 786991 states and 1156103 transitions. [2021-12-06 22:08:03,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:08:03,118 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 0 states have call successors, (0), 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 334 [2021-12-06 22:08:03,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:08:03,876 INFO L225 Difference]: With dead ends: 786991 [2021-12-06 22:08:03,876 INFO L226 Difference]: Without dead ends: 525024 [2021-12-06 22:08:04,047 INFO L932 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 [2021-12-06 22:08:04,048 INFO L933 BasicCegarLoop]: 2376 mSDtfsCounter, 1152 mSDsluCounter, 1219 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1152 SdHoareTripleChecker+Valid, 3595 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:08:04,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1152 Valid, 3595 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:08:04,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525024 states. [2021-12-06 22:08:21,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525024 to 264918. [2021-12-06 22:08:21,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264918 states, 264917 states have (on average 1.4694224983674131) internal successors, (389275), 264917 states have internal predecessors, (389275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:08:22,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264918 states to 264918 states and 389275 transitions. [2021-12-06 22:08:22,266 INFO L78 Accepts]: Start accepts. Automaton has 264918 states and 389275 transitions. Word has length 334 [2021-12-06 22:08:22,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:08:22,266 INFO L470 AbstractCegarLoop]: Abstraction has 264918 states and 389275 transitions. [2021-12-06 22:08:22,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:08:22,266 INFO L276 IsEmpty]: Start isEmpty. Operand 264918 states and 389275 transitions. [2021-12-06 22:08:22,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2021-12-06 22:08:22,486 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:08:22,487 INFO L514 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] [2021-12-06 22:08:22,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 22:08:22,487 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:08:22,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:08:22,487 INFO L85 PathProgramCache]: Analyzing trace with hash 57572492, now seen corresponding path program 1 times [2021-12-06 22:08:22,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:08:22,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465199499] [2021-12-06 22:08:22,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:08:22,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:08:22,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:08:22,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:08:22,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:08:22,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465199499] [2021-12-06 22:08:22,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465199499] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:08:22,549 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:08:22,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:08:22,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585665998] [2021-12-06 22:08:22,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:08:22,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:08:22,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:08:22,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:08:22,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:08:22,551 INFO L87 Difference]: Start difference. First operand 264918 states and 389275 transitions. Second operand has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:08:50,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:08:50,978 INFO L93 Difference]: Finished difference Result 789410 states and 1159662 transitions. [2021-12-06 22:08:50,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:08:50,979 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 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 335 [2021-12-06 22:08:50,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:08:51,867 INFO L225 Difference]: With dead ends: 789410 [2021-12-06 22:08:51,867 INFO L226 Difference]: Without dead ends: 527081 [2021-12-06 22:08:52,035 INFO L932 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 [2021-12-06 22:08:52,036 INFO L933 BasicCegarLoop]: 2376 mSDtfsCounter, 1147 mSDsluCounter, 1219 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1147 SdHoareTripleChecker+Valid, 3595 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:08:52,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1147 Valid, 3595 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:08:52,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527081 states. [2021-12-06 22:09:10,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527081 to 265603. [2021-12-06 22:09:10,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265603 states, 265602 states have (on average 1.4686598745491375) internal successors, (390079), 265602 states have internal predecessors, (390079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:09:10,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265603 states to 265603 states and 390079 transitions. [2021-12-06 22:09:10,778 INFO L78 Accepts]: Start accepts. Automaton has 265603 states and 390079 transitions. Word has length 335 [2021-12-06 22:09:10,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:09:10,778 INFO L470 AbstractCegarLoop]: Abstraction has 265603 states and 390079 transitions. [2021-12-06 22:09:10,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:09:10,778 INFO L276 IsEmpty]: Start isEmpty. Operand 265603 states and 390079 transitions. [2021-12-06 22:09:11,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2021-12-06 22:09:11,211 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:09:11,212 INFO L514 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] [2021-12-06 22:09:11,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 22:09:11,212 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:09:11,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:09:11,212 INFO L85 PathProgramCache]: Analyzing trace with hash 837610595, now seen corresponding path program 1 times [2021-12-06 22:09:11,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:09:11,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876027052] [2021-12-06 22:09:11,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:09:11,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:09:11,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:09:11,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:09:11,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:09:11,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876027052] [2021-12-06 22:09:11,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876027052] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:09:11,278 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:09:11,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:09:11,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450956092] [2021-12-06 22:09:11,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:09:11,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:09:11,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:09:11,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:09:11,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:09:11,280 INFO L87 Difference]: Start difference. First operand 265603 states and 390079 transitions. Second operand has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:09:41,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:09:41,338 INFO L93 Difference]: Finished difference Result 782984 states and 1147894 transitions. [2021-12-06 22:09:41,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:09:41,339 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 0 states have call successors, (0), 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 336 [2021-12-06 22:09:41,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:09:42,252 INFO L225 Difference]: With dead ends: 782984 [2021-12-06 22:09:42,253 INFO L226 Difference]: Without dead ends: 519816 [2021-12-06 22:09:42,460 INFO L932 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 [2021-12-06 22:09:42,461 INFO L933 BasicCegarLoop]: 2361 mSDtfsCounter, 1064 mSDsluCounter, 1168 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1064 SdHoareTripleChecker+Valid, 3529 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:09:42,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1064 Valid, 3529 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:09:42,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519816 states. [2021-12-06 22:10:15,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519816 to 519814. [2021-12-06 22:10:16,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519814 states, 519813 states have (on average 1.4566372907180083) internal successors, (757179), 519813 states have internal predecessors, (757179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:10:17,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519814 states to 519814 states and 757179 transitions. [2021-12-06 22:10:17,399 INFO L78 Accepts]: Start accepts. Automaton has 519814 states and 757179 transitions. Word has length 336 [2021-12-06 22:10:17,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:10:17,400 INFO L470 AbstractCegarLoop]: Abstraction has 519814 states and 757179 transitions. [2021-12-06 22:10:17,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:10:17,400 INFO L276 IsEmpty]: Start isEmpty. Operand 519814 states and 757179 transitions. [2021-12-06 22:10:17,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2021-12-06 22:10:17,789 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:10:17,789 INFO L514 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] [2021-12-06 22:10:17,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 22:10:17,790 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:10:17,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:10:17,790 INFO L85 PathProgramCache]: Analyzing trace with hash -94093632, now seen corresponding path program 1 times [2021-12-06 22:10:17,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:10:17,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537821560] [2021-12-06 22:10:17,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:10:17,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:10:18,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:18,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:10:18,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:10:18,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537821560] [2021-12-06 22:10:18,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537821560] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:10:18,134 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:10:18,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 22:10:18,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022158749] [2021-12-06 22:10:18,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:10:18,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:10:18,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:10:18,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:10:18,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:10:18,136 INFO L87 Difference]: Start difference. First operand 519814 states and 757179 transitions. Second operand has 5 states, 5 states have (on average 67.2) internal successors, (336), 5 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:10:53,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:10:53,674 INFO L93 Difference]: Finished difference Result 1076890 states and 1568441 transitions. [2021-12-06 22:10:53,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 22:10:53,675 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 67.2) internal successors, (336), 5 states have internal predecessors, (336), 0 states have call successors, (0), 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 336 [2021-12-06 22:10:53,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:10:54,467 INFO L225 Difference]: With dead ends: 1076890 [2021-12-06 22:10:54,468 INFO L226 Difference]: Without dead ends: 561476 [2021-12-06 22:10:54,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:10:54,956 INFO L933 BasicCegarLoop]: 1896 mSDtfsCounter, 3918 mSDsluCounter, 1158 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3918 SdHoareTripleChecker+Valid, 3054 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:10:54,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3918 Valid, 3054 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:10:55,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561476 states. [2021-12-06 22:11:30,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561476 to 519354. [2021-12-06 22:11:30,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519354 states, 519353 states have (on average 1.4561714286814555) internal successors, (756267), 519353 states have internal predecessors, (756267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:11:32,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519354 states to 519354 states and 756267 transitions. [2021-12-06 22:11:32,123 INFO L78 Accepts]: Start accepts. Automaton has 519354 states and 756267 transitions. Word has length 336 [2021-12-06 22:11:32,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:11:32,124 INFO L470 AbstractCegarLoop]: Abstraction has 519354 states and 756267 transitions. [2021-12-06 22:11:32,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.2) internal successors, (336), 5 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:11:32,124 INFO L276 IsEmpty]: Start isEmpty. Operand 519354 states and 756267 transitions. [2021-12-06 22:11:32,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2021-12-06 22:11:32,777 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:11:32,777 INFO L514 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] [2021-12-06 22:11:32,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-06 22:11:32,777 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:11:32,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:11:32,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1988119951, now seen corresponding path program 1 times [2021-12-06 22:11:32,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:11:32,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393083909] [2021-12-06 22:11:32,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:11:32,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:11:32,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:11:32,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:11:32,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:11:32,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393083909] [2021-12-06 22:11:32,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393083909] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:11:32,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:11:32,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 22:11:32,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630516261] [2021-12-06 22:11:32,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:11:32,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:11:32,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:11:32,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:11:32,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:11:32,914 INFO L87 Difference]: Start difference. First operand 519354 states and 756267 transitions. Second operand has 5 states, 5 states have (on average 67.6) internal successors, (338), 5 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:12:39,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:12:39,062 INFO L93 Difference]: Finished difference Result 1524080 states and 2214459 transitions. [2021-12-06 22:12:39,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 22:12:39,063 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 67.6) internal successors, (338), 5 states have internal predecessors, (338), 0 states have call successors, (0), 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 338 [2021-12-06 22:12:39,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:12:40,817 INFO L225 Difference]: With dead ends: 1524080 [2021-12-06 22:12:40,817 INFO L226 Difference]: Without dead ends: 1009222 [2021-12-06 22:12:41,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:12:41,196 INFO L933 BasicCegarLoop]: 1833 mSDtfsCounter, 3935 mSDsluCounter, 1158 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3935 SdHoareTripleChecker+Valid, 2991 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:12:41,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3935 Valid, 2991 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:12:41,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009222 states. [2021-12-06 22:13:54,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009222 to 1009220. [2021-12-06 22:13:55,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1009220 states, 1009219 states have (on average 1.4420903688892104) internal successors, (1455385), 1009219 states have internal predecessors, (1455385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:13:57,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009220 states to 1009220 states and 1455385 transitions. [2021-12-06 22:13:57,695 INFO L78 Accepts]: Start accepts. Automaton has 1009220 states and 1455385 transitions. Word has length 338 [2021-12-06 22:13:57,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:13:57,695 INFO L470 AbstractCegarLoop]: Abstraction has 1009220 states and 1455385 transitions. [2021-12-06 22:13:57,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.6) internal successors, (338), 5 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:13:57,695 INFO L276 IsEmpty]: Start isEmpty. Operand 1009220 states and 1455385 transitions. [2021-12-06 22:13:58,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2021-12-06 22:13:58,799 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:13:58,799 INFO L514 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] [2021-12-06 22:13:58,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-06 22:13:58,799 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:13:58,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:13:58,800 INFO L85 PathProgramCache]: Analyzing trace with hash -579201474, now seen corresponding path program 1 times [2021-12-06 22:13:58,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:13:58,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137220980] [2021-12-06 22:13:58,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:13:58,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:13:58,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:58,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:13:58,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:13:58,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137220980] [2021-12-06 22:13:58,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137220980] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:13:58,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:13:58,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 22:13:58,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849777959] [2021-12-06 22:13:58,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:13:58,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:13:58,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:13:58,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:13:58,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:13:58,980 INFO L87 Difference]: Start difference. First operand 1009220 states and 1455385 transitions. Second operand has 4 states, 4 states have (on average 84.5) internal successors, (338), 4 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:15:15,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:15:15,014 INFO L93 Difference]: Finished difference Result 2091883 states and 3015666 transitions. [2021-12-06 22:15:15,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 22:15:15,014 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 84.5) internal successors, (338), 4 states have internal predecessors, (338), 0 states have call successors, (0), 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 338 [2021-12-06 22:15:15,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:15:16,865 INFO L225 Difference]: With dead ends: 2091883 [2021-12-06 22:15:16,865 INFO L226 Difference]: Without dead ends: 1095013 [2021-12-06 22:15:17,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:15:17,513 INFO L933 BasicCegarLoop]: 1983 mSDtfsCounter, 2594 mSDsluCounter, 1158 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2594 SdHoareTripleChecker+Valid, 3141 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:15:17,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2594 Valid, 3141 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:15:18,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1095013 states. [2021-12-06 22:16:31,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1095013 to 1005839.