/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:41:16,758 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:41:16,760 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:41:16,799 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:41:16,799 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:41:16,801 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:41:16,803 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:41:16,805 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:41:16,807 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:41:16,808 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:41:16,810 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:41:16,811 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:41:16,812 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:41:16,813 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:41:16,815 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:41:16,816 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:41:16,830 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:41:16,833 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:41:16,837 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:41:16,841 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:41:16,843 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:41:16,846 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:41:16,851 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:41:16,853 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:41:16,862 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 08:41:16,862 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 08:41:16,863 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 08:41:16,866 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 08:41:16,870 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 08:41:16,871 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 08:41:16,871 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 08:41:16,874 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 08:41:16,876 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 08:41:16,879 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 08:41:16,880 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 08:41:16,881 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 08:41:16,881 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 08:41:16,882 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 08:41:16,883 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:41:16,884 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:41:16,885 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:41:16,889 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:41:16,945 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:41:16,945 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:41:16,947 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:41:16,947 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:41:16,948 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:41:16,948 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:41:16,948 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:41:16,948 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:41:16,949 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:41:16,949 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:41:16,950 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:41:16,950 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:41:16,950 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:41:16,950 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:41:16,951 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:41:16,951 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:41:16,951 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:41:16,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:41:16,951 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:41:16,952 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:41:16,952 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:41:16,952 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:41:16,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:41:16,953 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:41:16,953 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:41:16,953 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:41:17,392 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:41:17,419 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:41:17,422 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:41:17,424 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:41:17,424 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:41:17,425 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-12-22 08:41:17,513 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a64746ee6/68b555323c4d4612a54a5f07dbde50c7/FLAGb68a7f02e [2020-12-22 08:41:18,314 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:41:18,315 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-12-22 08:41:18,334 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a64746ee6/68b555323c4d4612a54a5f07dbde50c7/FLAGb68a7f02e [2020-12-22 08:41:18,562 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a64746ee6/68b555323c4d4612a54a5f07dbde50c7 [2020-12-22 08:41:18,568 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:41:18,570 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:41:18,574 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:41:18,574 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:41:18,578 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:41:18,579 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:41:18" (1/1) ... [2020-12-22 08:41:18,581 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3124ff94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:41:18, skipping insertion in model container [2020-12-22 08:41:18,581 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:41:18" (1/1) ... [2020-12-22 08:41:18,589 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:41:18,658 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:41:19,020 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[8489,8502] [2020-12-22 08:41:19,061 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[11761,11774] [2020-12-22 08:41:19,077 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[12917,12930] [2020-12-22 08:41:19,085 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13573,13586] [2020-12-22 08:41:19,111 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15052,15065] [2020-12-22 08:41:19,116 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15708,15721] [2020-12-22 08:41:19,123 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16692,16705] [2020-12-22 08:41:19,143 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18988,19001] [2020-12-22 08:41:19,148 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[19647,19660] [2020-12-22 08:41:19,154 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[20629,20642] [2020-12-22 08:41:19,206 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[22420,22433] [2020-12-22 08:41:19,291 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:41:19,305 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:41:19,370 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[8489,8502] [2020-12-22 08:41:19,389 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[11761,11774] [2020-12-22 08:41:19,399 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[12917,12930] [2020-12-22 08:41:19,409 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13573,13586] [2020-12-22 08:41:19,421 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15052,15065] [2020-12-22 08:41:19,428 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15708,15721] [2020-12-22 08:41:19,441 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16692,16705] [2020-12-22 08:41:19,460 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18988,19001] [2020-12-22 08:41:19,468 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[19647,19660] [2020-12-22 08:41:19,474 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[20629,20642] [2020-12-22 08:41:19,491 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[22420,22433] [2020-12-22 08:41:19,558 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:41:19,581 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:41:19,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:41:19 WrapperNode [2020-12-22 08:41:19,582 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:41:19,583 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:41:19,584 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:41:19,584 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:41:19,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:41:19" (1/1) ... [2020-12-22 08:41:19,638 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:41:19" (1/1) ... [2020-12-22 08:41:19,756 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:41:19,758 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:41:19,758 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:41:19,758 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:41:19,768 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:41:19" (1/1) ... [2020-12-22 08:41:19,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:41:19" (1/1) ... [2020-12-22 08:41:19,787 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:41:19" (1/1) ... [2020-12-22 08:41:19,789 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:41:19" (1/1) ... [2020-12-22 08:41:19,837 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:41:19" (1/1) ... [2020-12-22 08:41:19,871 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:41:19" (1/1) ... [2020-12-22 08:41:19,883 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:41:19" (1/1) ... [2020-12-22 08:41:19,896 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:41:19,898 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:41:19,898 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:41:19,898 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:41:19,899 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:41:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:41:20,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:41:20,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:41:20,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:41:20,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:41:21,832 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:41:21,832 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:41:21,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:41:21 BoogieIcfgContainer [2020-12-22 08:41:21,835 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:41:21,837 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:41:21,837 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:41:21,841 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:41:21,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:41:18" (1/3) ... [2020-12-22 08:41:21,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ed82a5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:41:21, skipping insertion in model container [2020-12-22 08:41:21,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:41:19" (2/3) ... [2020-12-22 08:41:21,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ed82a5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:41:21, skipping insertion in model container [2020-12-22 08:41:21,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:41:21" (3/3) ... [2020-12-22 08:41:21,844 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-12-22 08:41:21,851 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:41:21,856 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2020-12-22 08:41:21,876 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-12-22 08:41:21,907 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:41:21,907 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:41:21,907 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:41:21,908 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:41:21,908 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:41:21,908 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:41:21,908 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:41:21,908 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:41:21,934 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states. [2020-12-22 08:41:21,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 08:41:21,948 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:41:21,949 INFO L422 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] [2020-12-22 08:41:21,950 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:41:21,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:41:21,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1863160701, now seen corresponding path program 1 times [2020-12-22 08:41:21,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:41:21,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980397798] [2020-12-22 08:41:21,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:41:22,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:41:22,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:41:22,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980397798] [2020-12-22 08:41:22,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:41:22,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:41:22,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896771276] [2020-12-22 08:41:22,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:41:22,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:41:22,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:41:22,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:41:22,483 INFO L87 Difference]: Start difference. First operand 357 states. Second operand 5 states. [2020-12-22 08:41:23,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:41:23,072 INFO L93 Difference]: Finished difference Result 703 states and 1189 transitions. [2020-12-22 08:41:23,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:41:23,074 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-12-22 08:41:23,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:41:23,112 INFO L225 Difference]: With dead ends: 703 [2020-12-22 08:41:23,112 INFO L226 Difference]: Without dead ends: 427 [2020-12-22 08:41:23,118 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:41:23,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2020-12-22 08:41:23,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 385. [2020-12-22 08:41:23,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2020-12-22 08:41:23,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 509 transitions. [2020-12-22 08:41:23,200 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 509 transitions. Word has length 58 [2020-12-22 08:41:23,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:41:23,201 INFO L481 AbstractCegarLoop]: Abstraction has 385 states and 509 transitions. [2020-12-22 08:41:23,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:41:23,201 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 509 transitions. [2020-12-22 08:41:23,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-22 08:41:23,206 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:41:23,206 INFO L422 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] [2020-12-22 08:41:23,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:41:23,207 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:41:23,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:41:23,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1094505509, now seen corresponding path program 1 times [2020-12-22 08:41:23,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:41:23,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750602758] [2020-12-22 08:41:23,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:41:23,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:41:23,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:41:23,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750602758] [2020-12-22 08:41:23,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:41:23,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:41:23,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574992458] [2020-12-22 08:41:23,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:41:23,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:41:23,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:41:23,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:41:23,490 INFO L87 Difference]: Start difference. First operand 385 states and 509 transitions. Second operand 6 states. [2020-12-22 08:41:23,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:41:23,860 INFO L93 Difference]: Finished difference Result 843 states and 1137 transitions. [2020-12-22 08:41:23,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:41:23,862 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-12-22 08:41:23,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:41:23,866 INFO L225 Difference]: With dead ends: 843 [2020-12-22 08:41:23,866 INFO L226 Difference]: Without dead ends: 528 [2020-12-22 08:41:23,872 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:41:23,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2020-12-22 08:41:23,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 488. [2020-12-22 08:41:23,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 488 states. [2020-12-22 08:41:23,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 666 transitions. [2020-12-22 08:41:23,965 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 666 transitions. Word has length 59 [2020-12-22 08:41:23,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:41:23,966 INFO L481 AbstractCegarLoop]: Abstraction has 488 states and 666 transitions. [2020-12-22 08:41:23,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:41:23,966 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 666 transitions. [2020-12-22 08:41:23,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 08:41:23,972 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:41:23,973 INFO L422 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] [2020-12-22 08:41:23,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:41:23,973 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:41:23,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:41:23,976 INFO L82 PathProgramCache]: Analyzing trace with hash 568036411, now seen corresponding path program 1 times [2020-12-22 08:41:23,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:41:23,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827750201] [2020-12-22 08:41:23,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:41:24,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:41:24,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:41:24,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827750201] [2020-12-22 08:41:24,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:41:24,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:41:24,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669520048] [2020-12-22 08:41:24,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:41:24,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:41:24,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:41:24,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:41:24,099 INFO L87 Difference]: Start difference. First operand 488 states and 666 transitions. Second operand 5 states. [2020-12-22 08:41:24,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:41:24,380 INFO L93 Difference]: Finished difference Result 906 states and 1259 transitions. [2020-12-22 08:41:24,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:41:24,380 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-12-22 08:41:24,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:41:24,384 INFO L225 Difference]: With dead ends: 906 [2020-12-22 08:41:24,384 INFO L226 Difference]: Without dead ends: 472 [2020-12-22 08:41:24,385 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:41:24,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2020-12-22 08:41:24,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 472. [2020-12-22 08:41:24,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 472 states. [2020-12-22 08:41:24,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 644 transitions. [2020-12-22 08:41:24,415 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 644 transitions. Word has length 60 [2020-12-22 08:41:24,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:41:24,415 INFO L481 AbstractCegarLoop]: Abstraction has 472 states and 644 transitions. [2020-12-22 08:41:24,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:41:24,416 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 644 transitions. [2020-12-22 08:41:24,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 08:41:24,417 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:41:24,417 INFO L422 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] [2020-12-22 08:41:24,418 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:41:24,418 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:41:24,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:41:24,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1932821818, now seen corresponding path program 1 times [2020-12-22 08:41:24,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:41:24,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027328198] [2020-12-22 08:41:24,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:41:24,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:41:24,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:41:24,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027328198] [2020-12-22 08:41:24,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:41:24,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:41:24,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417005114] [2020-12-22 08:41:24,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:41:24,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:41:24,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:41:24,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:41:24,533 INFO L87 Difference]: Start difference. First operand 472 states and 644 transitions. Second operand 5 states. [2020-12-22 08:41:24,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:41:24,795 INFO L93 Difference]: Finished difference Result 890 states and 1233 transitions. [2020-12-22 08:41:24,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:41:24,796 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-12-22 08:41:24,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:41:24,799 INFO L225 Difference]: With dead ends: 890 [2020-12-22 08:41:24,799 INFO L226 Difference]: Without dead ends: 461 [2020-12-22 08:41:24,800 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:41:24,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2020-12-22 08:41:24,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 461. [2020-12-22 08:41:24,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2020-12-22 08:41:24,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 628 transitions. [2020-12-22 08:41:24,834 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 628 transitions. Word has length 61 [2020-12-22 08:41:24,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:41:24,835 INFO L481 AbstractCegarLoop]: Abstraction has 461 states and 628 transitions. [2020-12-22 08:41:24,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:41:24,835 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 628 transitions. [2020-12-22 08:41:24,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-22 08:41:24,836 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:41:24,836 INFO L422 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] [2020-12-22 08:41:24,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:41:24,837 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:41:24,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:41:24,838 INFO L82 PathProgramCache]: Analyzing trace with hash 207205371, now seen corresponding path program 1 times [2020-12-22 08:41:24,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:41:24,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157645759] [2020-12-22 08:41:24,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:41:24,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:41:25,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:41:25,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157645759] [2020-12-22 08:41:25,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:41:25,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:41:25,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677862255] [2020-12-22 08:41:25,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:41:25,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:41:25,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:41:25,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:41:25,005 INFO L87 Difference]: Start difference. First operand 461 states and 628 transitions. Second operand 9 states. [2020-12-22 08:41:26,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:41:26,161 INFO L93 Difference]: Finished difference Result 1441 states and 2067 transitions. [2020-12-22 08:41:26,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-22 08:41:26,162 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-12-22 08:41:26,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:41:26,169 INFO L225 Difference]: With dead ends: 1441 [2020-12-22 08:41:26,169 INFO L226 Difference]: Without dead ends: 1195 [2020-12-22 08:41:26,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2020-12-22 08:41:26,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2020-12-22 08:41:26,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 461. [2020-12-22 08:41:26,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2020-12-22 08:41:26,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 627 transitions. [2020-12-22 08:41:26,238 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 627 transitions. Word has length 62 [2020-12-22 08:41:26,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:41:26,238 INFO L481 AbstractCegarLoop]: Abstraction has 461 states and 627 transitions. [2020-12-22 08:41:26,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:41:26,239 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 627 transitions. [2020-12-22 08:41:26,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-22 08:41:26,240 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:41:26,240 INFO L422 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] [2020-12-22 08:41:26,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:41:26,241 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:41:26,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:41:26,241 INFO L82 PathProgramCache]: Analyzing trace with hash -201639857, now seen corresponding path program 1 times [2020-12-22 08:41:26,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:41:26,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020715681] [2020-12-22 08:41:26,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:41:26,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:41:26,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:41:26,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020715681] [2020-12-22 08:41:26,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:41:26,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:41:26,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227049033] [2020-12-22 08:41:26,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:41:26,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:41:26,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:41:26,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:41:26,390 INFO L87 Difference]: Start difference. First operand 461 states and 627 transitions. Second operand 9 states. [2020-12-22 08:41:27,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:41:27,362 INFO L93 Difference]: Finished difference Result 1440 states and 2070 transitions. [2020-12-22 08:41:27,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 08:41:27,362 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-12-22 08:41:27,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:41:27,369 INFO L225 Difference]: With dead ends: 1440 [2020-12-22 08:41:27,369 INFO L226 Difference]: Without dead ends: 1220 [2020-12-22 08:41:27,370 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-12-22 08:41:27,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2020-12-22 08:41:27,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 461. [2020-12-22 08:41:27,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2020-12-22 08:41:27,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 626 transitions. [2020-12-22 08:41:27,418 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 626 transitions. Word has length 62 [2020-12-22 08:41:27,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:41:27,418 INFO L481 AbstractCegarLoop]: Abstraction has 461 states and 626 transitions. [2020-12-22 08:41:27,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:41:27,418 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 626 transitions. [2020-12-22 08:41:27,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-22 08:41:27,420 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:41:27,420 INFO L422 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] [2020-12-22 08:41:27,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:41:27,420 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:41:27,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:41:27,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1938423665, now seen corresponding path program 1 times [2020-12-22 08:41:27,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:41:27,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653504655] [2020-12-22 08:41:27,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:41:27,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:41:27,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:41:27,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653504655] [2020-12-22 08:41:27,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:41:27,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:41:27,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511326078] [2020-12-22 08:41:27,577 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:41:27,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:41:27,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:41:27,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:41:27,578 INFO L87 Difference]: Start difference. First operand 461 states and 626 transitions. Second operand 9 states. [2020-12-22 08:41:28,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:41:28,643 INFO L93 Difference]: Finished difference Result 1481 states and 2113 transitions. [2020-12-22 08:41:28,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-22 08:41:28,644 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-12-22 08:41:28,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:41:28,651 INFO L225 Difference]: With dead ends: 1481 [2020-12-22 08:41:28,651 INFO L226 Difference]: Without dead ends: 1195 [2020-12-22 08:41:28,657 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2020-12-22 08:41:28,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2020-12-22 08:41:28,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 461. [2020-12-22 08:41:28,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2020-12-22 08:41:28,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 624 transitions. [2020-12-22 08:41:28,720 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 624 transitions. Word has length 62 [2020-12-22 08:41:28,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:41:28,722 INFO L481 AbstractCegarLoop]: Abstraction has 461 states and 624 transitions. [2020-12-22 08:41:28,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:41:28,722 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 624 transitions. [2020-12-22 08:41:28,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-22 08:41:28,723 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:41:28,723 INFO L422 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] [2020-12-22 08:41:28,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:41:28,724 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:41:28,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:41:28,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1233191565, now seen corresponding path program 1 times [2020-12-22 08:41:28,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:41:28,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551663694] [2020-12-22 08:41:28,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:41:28,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:41:28,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:41:28,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551663694] [2020-12-22 08:41:28,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:41:28,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:41:28,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115863477] [2020-12-22 08:41:28,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 08:41:28,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:41:28,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 08:41:28,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:41:28,891 INFO L87 Difference]: Start difference. First operand 461 states and 624 transitions. Second operand 8 states. [2020-12-22 08:41:29,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:41:29,458 INFO L93 Difference]: Finished difference Result 899 states and 1234 transitions. [2020-12-22 08:41:29,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 08:41:29,459 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 62 [2020-12-22 08:41:29,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:41:29,462 INFO L225 Difference]: With dead ends: 899 [2020-12-22 08:41:29,462 INFO L226 Difference]: Without dead ends: 605 [2020-12-22 08:41:29,463 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2020-12-22 08:41:29,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2020-12-22 08:41:29,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 461. [2020-12-22 08:41:29,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2020-12-22 08:41:29,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 623 transitions. [2020-12-22 08:41:29,525 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 623 transitions. Word has length 62 [2020-12-22 08:41:29,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:41:29,525 INFO L481 AbstractCegarLoop]: Abstraction has 461 states and 623 transitions. [2020-12-22 08:41:29,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 08:41:29,525 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 623 transitions. [2020-12-22 08:41:29,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 08:41:29,526 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:41:29,527 INFO L422 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] [2020-12-22 08:41:29,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:41:29,527 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:41:29,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:41:29,528 INFO L82 PathProgramCache]: Analyzing trace with hash -2031197374, now seen corresponding path program 1 times [2020-12-22 08:41:29,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:41:29,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459893504] [2020-12-22 08:41:29,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:41:29,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:41:29,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:41:29,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459893504] [2020-12-22 08:41:29,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:41:29,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:41:29,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239072824] [2020-12-22 08:41:29,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:41:29,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:41:29,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:41:29,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:41:29,677 INFO L87 Difference]: Start difference. First operand 461 states and 623 transitions. Second operand 9 states. [2020-12-22 08:41:30,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:41:30,725 INFO L93 Difference]: Finished difference Result 1409 states and 2017 transitions. [2020-12-22 08:41:30,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 08:41:30,726 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-12-22 08:41:30,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:41:30,732 INFO L225 Difference]: With dead ends: 1409 [2020-12-22 08:41:30,733 INFO L226 Difference]: Without dead ends: 1196 [2020-12-22 08:41:30,734 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2020-12-22 08:41:30,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2020-12-22 08:41:30,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 461. [2020-12-22 08:41:30,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2020-12-22 08:41:30,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 622 transitions. [2020-12-22 08:41:30,790 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 622 transitions. Word has length 64 [2020-12-22 08:41:30,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:41:30,790 INFO L481 AbstractCegarLoop]: Abstraction has 461 states and 622 transitions. [2020-12-22 08:41:30,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:41:30,790 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 622 transitions. [2020-12-22 08:41:30,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 08:41:30,791 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:41:30,792 INFO L422 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] [2020-12-22 08:41:30,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:41:30,792 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:41:30,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:41:30,793 INFO L82 PathProgramCache]: Analyzing trace with hash -119000272, now seen corresponding path program 1 times [2020-12-22 08:41:30,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:41:30,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324754980] [2020-12-22 08:41:30,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:41:30,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:41:30,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:41:30,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324754980] [2020-12-22 08:41:30,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:41:30,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 08:41:30,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611900390] [2020-12-22 08:41:30,999 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 08:41:30,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:41:31,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 08:41:31,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:41:31,000 INFO L87 Difference]: Start difference. First operand 461 states and 622 transitions. Second operand 11 states. [2020-12-22 08:41:34,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:41:34,589 INFO L93 Difference]: Finished difference Result 3454 states and 5028 transitions. [2020-12-22 08:41:34,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-12-22 08:41:34,589 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 64 [2020-12-22 08:41:34,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:41:34,606 INFO L225 Difference]: With dead ends: 3454 [2020-12-22 08:41:34,606 INFO L226 Difference]: Without dead ends: 3229 [2020-12-22 08:41:34,608 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=374, Invalid=1186, Unknown=0, NotChecked=0, Total=1560 [2020-12-22 08:41:34,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3229 states. [2020-12-22 08:41:34,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3229 to 465. [2020-12-22 08:41:34,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 465 states. [2020-12-22 08:41:34,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 626 transitions. [2020-12-22 08:41:34,708 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 626 transitions. Word has length 64 [2020-12-22 08:41:34,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:41:34,709 INFO L481 AbstractCegarLoop]: Abstraction has 465 states and 626 transitions. [2020-12-22 08:41:34,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 08:41:34,709 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 626 transitions. [2020-12-22 08:41:34,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 08:41:34,710 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:41:34,710 INFO L422 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] [2020-12-22 08:41:34,711 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:41:34,711 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:41:34,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:41:34,711 INFO L82 PathProgramCache]: Analyzing trace with hash -1520301075, now seen corresponding path program 1 times [2020-12-22 08:41:34,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:41:34,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558431011] [2020-12-22 08:41:34,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:41:34,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:41:34,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:41:34,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558431011] [2020-12-22 08:41:34,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:41:34,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:41:34,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869783180] [2020-12-22 08:41:34,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:41:34,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:41:34,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:41:34,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:41:34,857 INFO L87 Difference]: Start difference. First operand 465 states and 626 transitions. Second operand 9 states. [2020-12-22 08:41:35,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:41:35,986 INFO L93 Difference]: Finished difference Result 1410 states and 2017 transitions. [2020-12-22 08:41:35,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 08:41:35,987 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-12-22 08:41:35,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:41:35,993 INFO L225 Difference]: With dead ends: 1410 [2020-12-22 08:41:35,993 INFO L226 Difference]: Without dead ends: 1200 [2020-12-22 08:41:35,994 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2020-12-22 08:41:35,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1200 states. [2020-12-22 08:41:36,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1200 to 465. [2020-12-22 08:41:36,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 465 states. [2020-12-22 08:41:36,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 625 transitions. [2020-12-22 08:41:36,071 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 625 transitions. Word has length 64 [2020-12-22 08:41:36,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:41:36,071 INFO L481 AbstractCegarLoop]: Abstraction has 465 states and 625 transitions. [2020-12-22 08:41:36,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:41:36,071 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 625 transitions. [2020-12-22 08:41:36,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 08:41:36,072 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:41:36,072 INFO L422 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] [2020-12-22 08:41:36,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 08:41:36,073 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:41:36,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:41:36,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1508633347, now seen corresponding path program 1 times [2020-12-22 08:41:36,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:41:36,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718499618] [2020-12-22 08:41:36,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:41:36,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:41:36,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:41:36,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718499618] [2020-12-22 08:41:36,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:41:36,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 08:41:36,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636388379] [2020-12-22 08:41:36,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 08:41:36,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:41:36,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 08:41:36,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:41:36,315 INFO L87 Difference]: Start difference. First operand 465 states and 625 transitions. Second operand 11 states. [2020-12-22 08:41:38,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:41:38,868 INFO L93 Difference]: Finished difference Result 2306 states and 3333 transitions. [2020-12-22 08:41:38,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-22 08:41:38,869 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 64 [2020-12-22 08:41:38,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:41:38,880 INFO L225 Difference]: With dead ends: 2306 [2020-12-22 08:41:38,881 INFO L226 Difference]: Without dead ends: 2301 [2020-12-22 08:41:38,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=249, Invalid=743, Unknown=0, NotChecked=0, Total=992 [2020-12-22 08:41:38,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2301 states. [2020-12-22 08:41:38,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2301 to 469. [2020-12-22 08:41:38,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 469 states. [2020-12-22 08:41:38,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 629 transitions. [2020-12-22 08:41:38,984 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 629 transitions. Word has length 64 [2020-12-22 08:41:38,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:41:38,984 INFO L481 AbstractCegarLoop]: Abstraction has 469 states and 629 transitions. [2020-12-22 08:41:38,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 08:41:38,984 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 629 transitions. [2020-12-22 08:41:38,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 08:41:38,985 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:41:38,986 INFO L422 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] [2020-12-22 08:41:38,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 08:41:38,986 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:41:38,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:41:38,987 INFO L82 PathProgramCache]: Analyzing trace with hash -904154553, now seen corresponding path program 1 times [2020-12-22 08:41:38,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:41:38,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038185862] [2020-12-22 08:41:38,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:41:39,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:41:39,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:41:39,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038185862] [2020-12-22 08:41:39,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:41:39,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:41:39,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166360159] [2020-12-22 08:41:39,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:41:39,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:41:39,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:41:39,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:41:39,132 INFO L87 Difference]: Start difference. First operand 469 states and 629 transitions. Second operand 9 states. [2020-12-22 08:41:40,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:41:40,278 INFO L93 Difference]: Finished difference Result 1205 states and 1700 transitions. [2020-12-22 08:41:40,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 08:41:40,278 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-12-22 08:41:40,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:41:40,284 INFO L225 Difference]: With dead ends: 1205 [2020-12-22 08:41:40,284 INFO L226 Difference]: Without dead ends: 1200 [2020-12-22 08:41:40,285 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2020-12-22 08:41:40,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1200 states. [2020-12-22 08:41:40,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1200 to 469. [2020-12-22 08:41:40,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 469 states. [2020-12-22 08:41:40,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 627 transitions. [2020-12-22 08:41:40,377 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 627 transitions. Word has length 64 [2020-12-22 08:41:40,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:41:40,378 INFO L481 AbstractCegarLoop]: Abstraction has 469 states and 627 transitions. [2020-12-22 08:41:40,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:41:40,378 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 627 transitions. [2020-12-22 08:41:40,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 08:41:40,379 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:41:40,379 INFO L422 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] [2020-12-22 08:41:40,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 08:41:40,379 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:41:40,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:41:40,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1008042549, now seen corresponding path program 1 times [2020-12-22 08:41:40,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:41:40,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355219687] [2020-12-22 08:41:40,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:41:40,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:41:40,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:41:40,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355219687] [2020-12-22 08:41:40,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:41:40,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:41:40,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893998070] [2020-12-22 08:41:40,502 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:41:40,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:41:40,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:41:40,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:41:40,503 INFO L87 Difference]: Start difference. First operand 469 states and 627 transitions. Second operand 9 states. [2020-12-22 08:41:41,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:41:41,720 INFO L93 Difference]: Finished difference Result 1241 states and 1751 transitions. [2020-12-22 08:41:41,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 08:41:41,721 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-12-22 08:41:41,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:41:41,725 INFO L225 Difference]: With dead ends: 1241 [2020-12-22 08:41:41,725 INFO L226 Difference]: Without dead ends: 1224 [2020-12-22 08:41:41,726 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-12-22 08:41:41,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2020-12-22 08:41:41,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 469. [2020-12-22 08:41:41,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 469 states. [2020-12-22 08:41:41,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 625 transitions. [2020-12-22 08:41:41,837 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 625 transitions. Word has length 64 [2020-12-22 08:41:41,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:41:41,837 INFO L481 AbstractCegarLoop]: Abstraction has 469 states and 625 transitions. [2020-12-22 08:41:41,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:41:41,837 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 625 transitions. [2020-12-22 08:41:41,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 08:41:41,838 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:41:41,839 INFO L422 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] [2020-12-22 08:41:41,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 08:41:41,839 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:41:41,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:41:41,839 INFO L82 PathProgramCache]: Analyzing trace with hash -743174492, now seen corresponding path program 1 times [2020-12-22 08:41:41,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:41:41,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822876447] [2020-12-22 08:41:41,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:41:41,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:41:41,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:41:41,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822876447] [2020-12-22 08:41:41,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:41:41,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:41:41,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898943601] [2020-12-22 08:41:41,997 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:41:41,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:41:41,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:41:41,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:41:41,998 INFO L87 Difference]: Start difference. First operand 469 states and 625 transitions. Second operand 9 states. [2020-12-22 08:41:43,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:41:43,226 INFO L93 Difference]: Finished difference Result 1205 states and 1696 transitions. [2020-12-22 08:41:43,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 08:41:43,227 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-12-22 08:41:43,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:41:43,231 INFO L225 Difference]: With dead ends: 1205 [2020-12-22 08:41:43,231 INFO L226 Difference]: Without dead ends: 1200 [2020-12-22 08:41:43,232 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2020-12-22 08:41:43,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1200 states. [2020-12-22 08:41:43,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1200 to 465. [2020-12-22 08:41:43,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 465 states. [2020-12-22 08:41:43,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 620 transitions. [2020-12-22 08:41:43,332 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 620 transitions. Word has length 65 [2020-12-22 08:41:43,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:41:43,333 INFO L481 AbstractCegarLoop]: Abstraction has 465 states and 620 transitions. [2020-12-22 08:41:43,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:41:43,333 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 620 transitions. [2020-12-22 08:41:43,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 08:41:43,334 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:41:43,334 INFO L422 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] [2020-12-22 08:41:43,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 08:41:43,335 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:41:43,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:41:43,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1642672525, now seen corresponding path program 1 times [2020-12-22 08:41:43,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:41:43,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812046925] [2020-12-22 08:41:43,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:41:43,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:41:43,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:41:43,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812046925] [2020-12-22 08:41:43,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:41:43,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:41:43,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657292219] [2020-12-22 08:41:43,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:41:43,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:41:43,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:41:43,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:41:43,460 INFO L87 Difference]: Start difference. First operand 465 states and 620 transitions. Second operand 9 states. [2020-12-22 08:41:44,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:41:44,604 INFO L93 Difference]: Finished difference Result 1445 states and 2062 transitions. [2020-12-22 08:41:44,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 08:41:44,604 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-12-22 08:41:44,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:41:44,608 INFO L225 Difference]: With dead ends: 1445 [2020-12-22 08:41:44,609 INFO L226 Difference]: Without dead ends: 1220 [2020-12-22 08:41:44,609 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-12-22 08:41:44,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2020-12-22 08:41:44,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 461. [2020-12-22 08:41:44,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2020-12-22 08:41:44,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 615 transitions. [2020-12-22 08:41:44,712 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 615 transitions. Word has length 65 [2020-12-22 08:41:44,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:41:44,713 INFO L481 AbstractCegarLoop]: Abstraction has 461 states and 615 transitions. [2020-12-22 08:41:44,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:41:44,713 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 615 transitions. [2020-12-22 08:41:44,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 08:41:44,714 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:41:44,714 INFO L422 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] [2020-12-22 08:41:44,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 08:41:44,715 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:41:44,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:41:44,715 INFO L82 PathProgramCache]: Analyzing trace with hash 370944031, now seen corresponding path program 1 times [2020-12-22 08:41:44,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:41:44,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152462716] [2020-12-22 08:41:44,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:41:44,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:41:45,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:41:45,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152462716] [2020-12-22 08:41:45,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:41:45,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2020-12-22 08:41:45,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432067885] [2020-12-22 08:41:45,702 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-12-22 08:41:45,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:41:45,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-12-22 08:41:45,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2020-12-22 08:41:45,703 INFO L87 Difference]: Start difference. First operand 461 states and 615 transitions. Second operand 24 states. [2020-12-22 08:41:46,084 WARN L197 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 94 [2020-12-22 08:41:47,007 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2020-12-22 08:41:47,228 WARN L197 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2020-12-22 08:41:47,507 WARN L197 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 69 [2020-12-22 08:41:47,722 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2020-12-22 08:41:47,916 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2020-12-22 08:41:48,110 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2020-12-22 08:41:48,357 WARN L197 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2020-12-22 08:41:48,563 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2020-12-22 08:41:51,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:41:51,746 INFO L93 Difference]: Finished difference Result 1380 states and 1942 transitions. [2020-12-22 08:41:51,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-12-22 08:41:51,747 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 66 [2020-12-22 08:41:51,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:41:51,752 INFO L225 Difference]: With dead ends: 1380 [2020-12-22 08:41:51,752 INFO L226 Difference]: Without dead ends: 1168 [2020-12-22 08:41:51,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=347, Invalid=1459, Unknown=0, NotChecked=0, Total=1806 [2020-12-22 08:41:51,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2020-12-22 08:41:51,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 472. [2020-12-22 08:41:51,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 472 states. [2020-12-22 08:41:51,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 629 transitions. [2020-12-22 08:41:51,853 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 629 transitions. Word has length 66 [2020-12-22 08:41:51,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:41:51,854 INFO L481 AbstractCegarLoop]: Abstraction has 472 states and 629 transitions. [2020-12-22 08:41:51,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-12-22 08:41:51,854 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 629 transitions. [2020-12-22 08:41:51,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 08:41:51,855 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:41:51,855 INFO L422 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] [2020-12-22 08:41:51,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 08:41:51,856 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:41:51,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:41:51,856 INFO L82 PathProgramCache]: Analyzing trace with hash -1409573117, now seen corresponding path program 1 times [2020-12-22 08:41:51,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:41:51,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352520803] [2020-12-22 08:41:51,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:41:51,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:41:52,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:41:52,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352520803] [2020-12-22 08:41:52,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:41:52,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2020-12-22 08:41:52,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977159359] [2020-12-22 08:41:52,782 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-12-22 08:41:52,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:41:52,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-12-22 08:41:52,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=495, Unknown=0, NotChecked=0, Total=552 [2020-12-22 08:41:52,783 INFO L87 Difference]: Start difference. First operand 472 states and 629 transitions. Second operand 24 states. [2020-12-22 08:41:53,127 WARN L197 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 92 [2020-12-22 08:41:53,668 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36 [2020-12-22 08:41:53,819 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 35 [2020-12-22 08:41:54,098 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2020-12-22 08:41:54,353 WARN L197 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2020-12-22 08:41:54,642 WARN L197 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2020-12-22 08:41:54,849 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2020-12-22 08:41:55,051 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2020-12-22 08:41:55,250 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2020-12-22 08:41:55,489 WARN L197 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2020-12-22 08:41:55,692 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2020-12-22 08:41:56,775 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2020-12-22 08:41:59,291 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2020-12-22 08:42:00,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:42:00,445 INFO L93 Difference]: Finished difference Result 2295 states and 3352 transitions. [2020-12-22 08:42:00,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-12-22 08:42:00,445 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 66 [2020-12-22 08:42:00,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:42:00,452 INFO L225 Difference]: With dead ends: 2295 [2020-12-22 08:42:00,452 INFO L226 Difference]: Without dead ends: 2080 [2020-12-22 08:42:00,454 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=388, Invalid=1774, Unknown=0, NotChecked=0, Total=2162 [2020-12-22 08:42:00,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2080 states. [2020-12-22 08:42:00,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2080 to 477. [2020-12-22 08:42:00,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477 states. [2020-12-22 08:42:00,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 635 transitions. [2020-12-22 08:42:00,561 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 635 transitions. Word has length 66 [2020-12-22 08:42:00,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:42:00,562 INFO L481 AbstractCegarLoop]: Abstraction has 477 states and 635 transitions. [2020-12-22 08:42:00,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-12-22 08:42:00,562 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 635 transitions. [2020-12-22 08:42:00,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 08:42:00,563 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:42:00,563 INFO L422 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] [2020-12-22 08:42:00,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 08:42:00,564 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:42:00,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:42:00,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1856476640, now seen corresponding path program 1 times [2020-12-22 08:42:00,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:42:00,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975210638] [2020-12-22 08:42:00,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:42:00,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:42:01,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:42:01,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975210638] [2020-12-22 08:42:01,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:42:01,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2020-12-22 08:42:01,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374353907] [2020-12-22 08:42:01,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-12-22 08:42:01,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:42:01,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-12-22 08:42:01,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=545, Unknown=0, NotChecked=0, Total=600 [2020-12-22 08:42:01,751 INFO L87 Difference]: Start difference. First operand 477 states and 635 transitions. Second operand 25 states. [2020-12-22 08:42:02,300 WARN L197 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 123 [2020-12-22 08:42:02,918 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 37 [2020-12-22 08:42:03,138 WARN L197 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 39 [2020-12-22 08:42:03,365 WARN L197 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 42 [2020-12-22 08:42:03,772 WARN L197 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 61 [2020-12-22 08:42:04,119 WARN L197 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 80 [2020-12-22 08:42:04,532 WARN L197 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 97 [2020-12-22 08:42:04,870 WARN L197 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2020-12-22 08:42:05,178 WARN L197 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2020-12-22 08:42:05,483 WARN L197 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2020-12-22 08:42:05,847 WARN L197 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 65 [2020-12-22 08:42:06,153 WARN L197 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2020-12-22 08:42:06,606 WARN L197 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2020-12-22 08:42:06,936 WARN L197 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2020-12-22 08:42:07,255 WARN L197 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2020-12-22 08:42:07,597 WARN L197 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2020-12-22 08:42:07,779 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 45 [2020-12-22 08:42:08,123 WARN L197 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2020-12-22 08:42:08,434 WARN L197 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 44 [2020-12-22 08:42:11,951 WARN L197 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 41 [2020-12-22 08:42:12,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:42:12,809 INFO L93 Difference]: Finished difference Result 2342 states and 3423 transitions. [2020-12-22 08:42:12,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-12-22 08:42:12,810 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 66 [2020-12-22 08:42:12,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:42:12,817 INFO L225 Difference]: With dead ends: 2342 [2020-12-22 08:42:12,818 INFO L226 Difference]: Without dead ends: 2131 [2020-12-22 08:42:12,819 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=493, Invalid=2057, Unknown=0, NotChecked=0, Total=2550 [2020-12-22 08:42:12,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2131 states. [2020-12-22 08:42:12,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2131 to 474. [2020-12-22 08:42:12,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 474 states. [2020-12-22 08:42:12,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 631 transitions. [2020-12-22 08:42:12,973 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 631 transitions. Word has length 66 [2020-12-22 08:42:12,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:42:12,973 INFO L481 AbstractCegarLoop]: Abstraction has 474 states and 631 transitions. [2020-12-22 08:42:12,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-12-22 08:42:12,973 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 631 transitions. [2020-12-22 08:42:12,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 08:42:12,974 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:42:12,974 INFO L422 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] [2020-12-22 08:42:12,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 08:42:12,975 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:42:12,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:42:12,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1246346588, now seen corresponding path program 1 times [2020-12-22 08:42:12,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:42:12,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105714064] [2020-12-22 08:42:12,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:42:13,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:42:13,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:42:13,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105714064] [2020-12-22 08:42:13,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:42:13,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2020-12-22 08:42:13,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700659576] [2020-12-22 08:42:13,852 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-22 08:42:13,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:42:13,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-22 08:42:13,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=447, Unknown=0, NotChecked=0, Total=506 [2020-12-22 08:42:13,853 INFO L87 Difference]: Start difference. First operand 474 states and 631 transitions. Second operand 23 states. [2020-12-22 08:42:14,164 WARN L197 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 80 [2020-12-22 08:42:14,727 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36 [2020-12-22 08:42:14,887 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-12-22 08:42:15,165 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-12-22 08:42:15,383 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-12-22 08:42:15,633 WARN L197 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2020-12-22 08:42:15,850 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-12-22 08:42:16,063 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-12-22 08:42:16,272 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-12-22 08:42:16,519 WARN L197 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2020-12-22 08:42:16,731 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-12-22 08:42:16,951 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-12-22 08:42:17,199 WARN L197 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2020-12-22 08:42:17,429 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-12-22 08:42:20,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:42:20,620 INFO L93 Difference]: Finished difference Result 1459 states and 2076 transitions. [2020-12-22 08:42:20,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-12-22 08:42:20,622 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 66 [2020-12-22 08:42:20,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:42:20,627 INFO L225 Difference]: With dead ends: 1459 [2020-12-22 08:42:20,627 INFO L226 Difference]: Without dead ends: 1244 [2020-12-22 08:42:20,629 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=366, Invalid=1356, Unknown=0, NotChecked=0, Total=1722 [2020-12-22 08:42:20,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1244 states. [2020-12-22 08:42:20,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1244 to 480. [2020-12-22 08:42:20,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 480 states. [2020-12-22 08:42:20,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 637 transitions. [2020-12-22 08:42:20,761 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 637 transitions. Word has length 66 [2020-12-22 08:42:20,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:42:20,761 INFO L481 AbstractCegarLoop]: Abstraction has 480 states and 637 transitions. [2020-12-22 08:42:20,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-12-22 08:42:20,761 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 637 transitions. [2020-12-22 08:42:20,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 08:42:20,762 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:42:20,762 INFO L422 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] [2020-12-22 08:42:20,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 08:42:20,763 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:42:20,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:42:20,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1787778406, now seen corresponding path program 1 times [2020-12-22 08:42:20,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:42:20,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821758503] [2020-12-22 08:42:20,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:42:20,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:42:22,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:42:22,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821758503] [2020-12-22 08:42:22,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:42:22,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2020-12-22 08:42:22,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243471513] [2020-12-22 08:42:22,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-12-22 08:42:22,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:42:22,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-12-22 08:42:22,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=486, Unknown=0, NotChecked=0, Total=552 [2020-12-22 08:42:22,006 INFO L87 Difference]: Start difference. First operand 480 states and 637 transitions. Second operand 24 states. [2020-12-22 08:42:22,389 WARN L197 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 99 [2020-12-22 08:42:22,813 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 30 [2020-12-22 08:42:22,989 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 37 [2020-12-22 08:42:23,175 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 38 [2020-12-22 08:42:23,365 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2020-12-22 08:42:23,717 WARN L197 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2020-12-22 08:42:24,020 WARN L197 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2020-12-22 08:42:24,384 WARN L197 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 79 [2020-12-22 08:42:24,657 WARN L197 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2020-12-22 08:42:24,914 WARN L197 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2020-12-22 08:42:26,789 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2020-12-22 08:42:29,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:42:29,137 INFO L93 Difference]: Finished difference Result 1495 states and 2114 transitions. [2020-12-22 08:42:29,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-12-22 08:42:29,138 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 66 [2020-12-22 08:42:29,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:42:29,143 INFO L225 Difference]: With dead ends: 1495 [2020-12-22 08:42:29,143 INFO L226 Difference]: Without dead ends: 1283 [2020-12-22 08:42:29,145 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=343, Invalid=1727, Unknown=0, NotChecked=0, Total=2070 [2020-12-22 08:42:29,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2020-12-22 08:42:29,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 490. [2020-12-22 08:42:29,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 490 states. [2020-12-22 08:42:29,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 652 transitions. [2020-12-22 08:42:29,257 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 652 transitions. Word has length 66 [2020-12-22 08:42:29,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:42:29,257 INFO L481 AbstractCegarLoop]: Abstraction has 490 states and 652 transitions. [2020-12-22 08:42:29,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-12-22 08:42:29,257 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 652 transitions. [2020-12-22 08:42:29,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 08:42:29,258 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:42:29,259 INFO L422 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] [2020-12-22 08:42:29,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 08:42:29,259 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:42:29,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:42:29,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1127331716, now seen corresponding path program 1 times [2020-12-22 08:42:29,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:42:29,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955106456] [2020-12-22 08:42:29,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:42:29,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:42:30,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:42:30,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955106456] [2020-12-22 08:42:30,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:42:30,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2020-12-22 08:42:30,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209383699] [2020-12-22 08:42:30,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-12-22 08:42:30,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:42:30,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-12-22 08:42:30,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2020-12-22 08:42:30,419 INFO L87 Difference]: Start difference. First operand 490 states and 652 transitions. Second operand 24 states. [2020-12-22 08:42:30,835 WARN L197 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 98 [2020-12-22 08:42:31,407 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 30 [2020-12-22 08:42:31,603 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 38 [2020-12-22 08:42:31,805 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 39 [2020-12-22 08:42:31,998 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 38 [2020-12-22 08:42:32,347 WARN L197 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2020-12-22 08:42:32,660 WARN L197 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2020-12-22 08:42:33,046 WARN L197 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 80 [2020-12-22 08:42:33,323 WARN L197 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2020-12-22 08:42:33,596 WARN L197 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2020-12-22 08:42:38,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:42:38,002 INFO L93 Difference]: Finished difference Result 1354 states and 1871 transitions. [2020-12-22 08:42:38,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-12-22 08:42:38,005 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 66 [2020-12-22 08:42:38,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:42:38,009 INFO L225 Difference]: With dead ends: 1354 [2020-12-22 08:42:38,009 INFO L226 Difference]: Without dead ends: 1350 [2020-12-22 08:42:38,010 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=382, Invalid=1874, Unknown=0, NotChecked=0, Total=2256 [2020-12-22 08:42:38,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1350 states. [2020-12-22 08:42:38,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1350 to 496. [2020-12-22 08:42:38,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 496 states. [2020-12-22 08:42:38,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 660 transitions. [2020-12-22 08:42:38,136 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 660 transitions. Word has length 66 [2020-12-22 08:42:38,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:42:38,136 INFO L481 AbstractCegarLoop]: Abstraction has 496 states and 660 transitions. [2020-12-22 08:42:38,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-12-22 08:42:38,136 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 660 transitions. [2020-12-22 08:42:38,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 08:42:38,137 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:42:38,138 INFO L422 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] [2020-12-22 08:42:38,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 08:42:38,138 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:42:38,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:42:38,139 INFO L82 PathProgramCache]: Analyzing trace with hash -653185432, now seen corresponding path program 1 times [2020-12-22 08:42:38,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:42:38,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411423462] [2020-12-22 08:42:38,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:42:38,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:42:39,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:42:39,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411423462] [2020-12-22 08:42:39,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:42:39,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2020-12-22 08:42:39,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392941888] [2020-12-22 08:42:39,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-22 08:42:39,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:42:39,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-22 08:42:39,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2020-12-22 08:42:39,205 INFO L87 Difference]: Start difference. First operand 496 states and 660 transitions. Second operand 23 states. [2020-12-22 08:42:39,502 WARN L197 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-12-22 08:42:40,114 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 08:42:40,302 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-12-22 08:42:40,497 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 08:42:40,820 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 08:42:41,061 WARN L197 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-12-22 08:42:41,340 WARN L197 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-12-22 08:42:41,596 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-12-22 08:42:41,845 WARN L197 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-12-22 08:42:46,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:42:46,161 INFO L93 Difference]: Finished difference Result 1483 states and 2104 transitions. [2020-12-22 08:42:46,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-12-22 08:42:46,162 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 66 [2020-12-22 08:42:46,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:42:46,165 INFO L225 Difference]: With dead ends: 1483 [2020-12-22 08:42:46,165 INFO L226 Difference]: Without dead ends: 1268 [2020-12-22 08:42:46,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=298, Invalid=1594, Unknown=0, NotChecked=0, Total=1892 [2020-12-22 08:42:46,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1268 states. [2020-12-22 08:42:46,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1268 to 495. [2020-12-22 08:42:46,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 495 states. [2020-12-22 08:42:46,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 657 transitions. [2020-12-22 08:42:46,300 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 657 transitions. Word has length 66 [2020-12-22 08:42:46,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:42:46,301 INFO L481 AbstractCegarLoop]: Abstraction has 495 states and 657 transitions. [2020-12-22 08:42:46,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-12-22 08:42:46,301 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 657 transitions. [2020-12-22 08:42:46,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:42:46,302 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:42:46,302 INFO L422 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] [2020-12-22 08:42:46,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 08:42:46,302 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:42:46,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:42:46,303 INFO L82 PathProgramCache]: Analyzing trace with hash -670125992, now seen corresponding path program 1 times [2020-12-22 08:42:46,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:42:46,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833704078] [2020-12-22 08:42:46,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:42:46,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:42:46,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:42:46,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833704078] [2020-12-22 08:42:46,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:42:46,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 08:42:46,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343887907] [2020-12-22 08:42:46,550 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 08:42:46,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:42:46,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 08:42:46,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:42:46,551 INFO L87 Difference]: Start difference. First operand 495 states and 657 transitions. Second operand 11 states. [2020-12-22 08:42:50,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:42:50,098 INFO L93 Difference]: Finished difference Result 2333 states and 3359 transitions. [2020-12-22 08:42:50,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-22 08:42:50,100 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2020-12-22 08:42:50,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:42:50,104 INFO L225 Difference]: With dead ends: 2333 [2020-12-22 08:42:50,104 INFO L226 Difference]: Without dead ends: 2326 [2020-12-22 08:42:50,105 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=249, Invalid=743, Unknown=0, NotChecked=0, Total=992 [2020-12-22 08:42:50,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2326 states. [2020-12-22 08:42:50,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2326 to 499. [2020-12-22 08:42:50,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 499 states. [2020-12-22 08:42:50,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 660 transitions. [2020-12-22 08:42:50,291 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 660 transitions. Word has length 67 [2020-12-22 08:42:50,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:42:50,291 INFO L481 AbstractCegarLoop]: Abstraction has 499 states and 660 transitions. [2020-12-22 08:42:50,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 08:42:50,291 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 660 transitions. [2020-12-22 08:42:50,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:42:50,295 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:42:50,295 INFO L422 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] [2020-12-22 08:42:50,295 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 08:42:50,296 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:42:50,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:42:50,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1209536804, now seen corresponding path program 1 times [2020-12-22 08:42:50,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:42:50,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643745395] [2020-12-22 08:42:50,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:42:50,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:42:51,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:42:51,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643745395] [2020-12-22 08:42:51,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:42:51,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-12-22 08:42:51,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402890813] [2020-12-22 08:42:51,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-22 08:42:51,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:42:51,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-22 08:42:51,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2020-12-22 08:42:51,472 INFO L87 Difference]: Start difference. First operand 499 states and 660 transitions. Second operand 19 states. [2020-12-22 08:42:51,724 WARN L197 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2020-12-22 08:42:52,118 WARN L197 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 32 [2020-12-22 08:42:52,327 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2020-12-22 08:42:52,571 WARN L197 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2020-12-22 08:42:52,894 WARN L197 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2020-12-22 08:42:53,248 WARN L197 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2020-12-22 08:42:53,599 WARN L197 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2020-12-22 08:42:53,941 WARN L197 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2020-12-22 08:42:54,280 WARN L197 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2020-12-22 08:42:54,594 WARN L197 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2020-12-22 08:42:54,988 WARN L197 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2020-12-22 08:42:55,292 WARN L197 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2020-12-22 08:42:55,587 WARN L197 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2020-12-22 08:42:55,927 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 39 [2020-12-22 08:42:56,269 WARN L197 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-12-22 08:42:56,575 WARN L197 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2020-12-22 08:42:58,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:42:58,790 INFO L93 Difference]: Finished difference Result 1246 states and 1751 transitions. [2020-12-22 08:42:58,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-22 08:42:58,791 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 67 [2020-12-22 08:42:58,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:42:58,793 INFO L225 Difference]: With dead ends: 1246 [2020-12-22 08:42:58,793 INFO L226 Difference]: Without dead ends: 1028 [2020-12-22 08:42:58,794 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=297, Invalid=963, Unknown=0, NotChecked=0, Total=1260 [2020-12-22 08:42:58,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1028 states. [2020-12-22 08:42:58,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1028 to 495. [2020-12-22 08:42:58,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 495 states. [2020-12-22 08:42:58,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 655 transitions. [2020-12-22 08:42:58,931 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 655 transitions. Word has length 67 [2020-12-22 08:42:58,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:42:58,931 INFO L481 AbstractCegarLoop]: Abstraction has 495 states and 655 transitions. [2020-12-22 08:42:58,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-22 08:42:58,932 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 655 transitions. [2020-12-22 08:42:58,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:42:58,933 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:42:58,933 INFO L422 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] [2020-12-22 08:42:58,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 08:42:58,933 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:42:58,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:42:58,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1046520172, now seen corresponding path program 1 times [2020-12-22 08:42:58,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:42:58,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165397116] [2020-12-22 08:42:58,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:42:58,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:42:59,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:42:59,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165397116] [2020-12-22 08:42:59,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:42:59,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-12-22 08:42:59,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535611893] [2020-12-22 08:42:59,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 08:42:59,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:42:59,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 08:42:59,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:42:59,397 INFO L87 Difference]: Start difference. First operand 495 states and 655 transitions. Second operand 11 states. [2020-12-22 08:42:59,533 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 27 [2020-12-22 08:42:59,948 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 29 [2020-12-22 08:43:00,133 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 35 [2020-12-22 08:43:00,303 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 35 [2020-12-22 08:43:00,801 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 35 [2020-12-22 08:43:01,043 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 30 [2020-12-22 08:43:01,351 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 32 [2020-12-22 08:43:02,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:43:02,094 INFO L93 Difference]: Finished difference Result 1223 states and 1713 transitions. [2020-12-22 08:43:02,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 08:43:02,096 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2020-12-22 08:43:02,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:43:02,098 INFO L225 Difference]: With dead ends: 1223 [2020-12-22 08:43:02,099 INFO L226 Difference]: Without dead ends: 1011 [2020-12-22 08:43:02,100 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2020-12-22 08:43:02,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2020-12-22 08:43:02,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 485. [2020-12-22 08:43:02,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 485 states. [2020-12-22 08:43:02,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 643 transitions. [2020-12-22 08:43:02,255 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 643 transitions. Word has length 67 [2020-12-22 08:43:02,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:43:02,256 INFO L481 AbstractCegarLoop]: Abstraction has 485 states and 643 transitions. [2020-12-22 08:43:02,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 08:43:02,256 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 643 transitions. [2020-12-22 08:43:02,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:43:02,257 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:43:02,257 INFO L422 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] [2020-12-22 08:43:02,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-22 08:43:02,258 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:43:02,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:43:02,258 INFO L82 PathProgramCache]: Analyzing trace with hash -570162683, now seen corresponding path program 1 times [2020-12-22 08:43:02,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:43:02,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598256358] [2020-12-22 08:43:02,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:43:02,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:43:02,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:43:02,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598256358] [2020-12-22 08:43:02,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:43:02,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-12-22 08:43:02,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395159977] [2020-12-22 08:43:02,938 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 08:43:02,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:43:02,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 08:43:02,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-12-22 08:43:02,939 INFO L87 Difference]: Start difference. First operand 485 states and 643 transitions. Second operand 13 states. [2020-12-22 08:43:03,358 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2020-12-22 08:43:05,014 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 30 [2020-12-22 08:43:05,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:43:05,470 INFO L93 Difference]: Finished difference Result 1135 states and 1600 transitions. [2020-12-22 08:43:05,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-22 08:43:05,472 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 67 [2020-12-22 08:43:05,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:43:05,474 INFO L225 Difference]: With dead ends: 1135 [2020-12-22 08:43:05,474 INFO L226 Difference]: Without dead ends: 920 [2020-12-22 08:43:05,475 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=150, Invalid=450, Unknown=0, NotChecked=0, Total=600 [2020-12-22 08:43:05,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2020-12-22 08:43:05,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 478. [2020-12-22 08:43:05,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2020-12-22 08:43:05,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 634 transitions. [2020-12-22 08:43:05,640 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 634 transitions. Word has length 67 [2020-12-22 08:43:05,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:43:05,640 INFO L481 AbstractCegarLoop]: Abstraction has 478 states and 634 transitions. [2020-12-22 08:43:05,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 08:43:05,640 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 634 transitions. [2020-12-22 08:43:05,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:43:05,641 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:43:05,641 INFO L422 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] [2020-12-22 08:43:05,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-22 08:43:05,642 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:43:05,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:43:05,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1813633064, now seen corresponding path program 1 times [2020-12-22 08:43:05,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:43:05,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078090595] [2020-12-22 08:43:05,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:43:05,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:43:06,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:43:06,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078090595] [2020-12-22 08:43:06,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:43:06,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-12-22 08:43:06,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191976483] [2020-12-22 08:43:06,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 08:43:06,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:43:06,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 08:43:06,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-12-22 08:43:06,295 INFO L87 Difference]: Start difference. First operand 478 states and 634 transitions. Second operand 12 states. [2020-12-22 08:43:06,438 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 25 [2020-12-22 08:43:06,590 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 27 [2020-12-22 08:43:06,733 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 29 [2020-12-22 08:43:06,912 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 23 [2020-12-22 08:43:07,109 WARN L197 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 31 [2020-12-22 08:43:07,288 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 31 [2020-12-22 08:43:07,584 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 29 [2020-12-22 08:43:07,855 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 26 [2020-12-22 08:43:09,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:43:09,081 INFO L93 Difference]: Finished difference Result 1396 states and 1993 transitions. [2020-12-22 08:43:09,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 08:43:09,082 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 67 [2020-12-22 08:43:09,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:43:09,085 INFO L225 Difference]: With dead ends: 1396 [2020-12-22 08:43:09,085 INFO L226 Difference]: Without dead ends: 1188 [2020-12-22 08:43:09,086 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=117, Invalid=345, Unknown=0, NotChecked=0, Total=462 [2020-12-22 08:43:09,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1188 states. [2020-12-22 08:43:09,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1188 to 478. [2020-12-22 08:43:09,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2020-12-22 08:43:09,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 633 transitions. [2020-12-22 08:43:09,240 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 633 transitions. Word has length 67 [2020-12-22 08:43:09,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:43:09,240 INFO L481 AbstractCegarLoop]: Abstraction has 478 states and 633 transitions. [2020-12-22 08:43:09,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 08:43:09,240 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 633 transitions. [2020-12-22 08:43:09,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:43:09,241 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:43:09,241 INFO L422 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] [2020-12-22 08:43:09,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-22 08:43:09,241 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:43:09,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:43:09,242 INFO L82 PathProgramCache]: Analyzing trace with hash -229278891, now seen corresponding path program 1 times [2020-12-22 08:43:09,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:43:09,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747011433] [2020-12-22 08:43:09,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:43:09,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:43:09,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:43:09,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747011433] [2020-12-22 08:43:09,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:43:09,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-12-22 08:43:09,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181328012] [2020-12-22 08:43:09,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-22 08:43:09,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:43:09,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-22 08:43:09,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-12-22 08:43:09,997 INFO L87 Difference]: Start difference. First operand 478 states and 633 transitions. Second operand 15 states. [2020-12-22 08:43:10,160 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-12-22 08:43:10,803 WARN L197 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-12-22 08:43:11,159 WARN L197 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 41 [2020-12-22 08:43:11,391 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-12-22 08:43:11,589 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-12-22 08:43:11,764 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-12-22 08:43:11,939 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2020-12-22 08:43:12,105 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 08:43:12,263 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2020-12-22 08:43:12,672 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 08:43:13,044 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 32 [2020-12-22 08:43:14,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:43:14,692 INFO L93 Difference]: Finished difference Result 1113 states and 1537 transitions. [2020-12-22 08:43:14,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-22 08:43:14,693 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 67 [2020-12-22 08:43:14,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:43:14,695 INFO L225 Difference]: With dead ends: 1113 [2020-12-22 08:43:14,695 INFO L226 Difference]: Without dead ends: 898 [2020-12-22 08:43:14,696 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=268, Invalid=788, Unknown=0, NotChecked=0, Total=1056 [2020-12-22 08:43:14,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2020-12-22 08:43:14,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 471. [2020-12-22 08:43:14,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 471 states. [2020-12-22 08:43:14,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 625 transitions. [2020-12-22 08:43:14,850 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 625 transitions. Word has length 67 [2020-12-22 08:43:14,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:43:14,850 INFO L481 AbstractCegarLoop]: Abstraction has 471 states and 625 transitions. [2020-12-22 08:43:14,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-22 08:43:14,850 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 625 transitions. [2020-12-22 08:43:14,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:43:14,851 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:43:14,851 INFO L422 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] [2020-12-22 08:43:14,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-12-22 08:43:14,851 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:43:14,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:43:14,852 INFO L82 PathProgramCache]: Analyzing trace with hash -444481636, now seen corresponding path program 1 times [2020-12-22 08:43:14,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:43:14,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126379976] [2020-12-22 08:43:14,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:43:14,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:43:15,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:43:15,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126379976] [2020-12-22 08:43:15,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:43:15,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-12-22 08:43:15,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905532019] [2020-12-22 08:43:15,445 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 08:43:15,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:43:15,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 08:43:15,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-12-22 08:43:15,446 INFO L87 Difference]: Start difference. First operand 471 states and 625 transitions. Second operand 13 states. [2020-12-22 08:43:15,611 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 31 [2020-12-22 08:43:15,807 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 28 [2020-12-22 08:43:16,165 WARN L197 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 31 [2020-12-22 08:43:16,497 WARN L197 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2020-12-22 08:43:16,816 WARN L197 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2020-12-22 08:43:17,131 WARN L197 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 37 [2020-12-22 08:43:17,460 WARN L197 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 34 [2020-12-22 08:43:18,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:43:18,295 INFO L93 Difference]: Finished difference Result 907 states and 1277 transitions. [2020-12-22 08:43:18,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-22 08:43:18,297 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 67 [2020-12-22 08:43:18,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:43:18,299 INFO L225 Difference]: With dead ends: 907 [2020-12-22 08:43:18,299 INFO L226 Difference]: Without dead ends: 891 [2020-12-22 08:43:18,302 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2020-12-22 08:43:18,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2020-12-22 08:43:18,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 455. [2020-12-22 08:43:18,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 455 states. [2020-12-22 08:43:18,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 608 transitions. [2020-12-22 08:43:18,458 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 608 transitions. Word has length 67 [2020-12-22 08:43:18,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:43:18,458 INFO L481 AbstractCegarLoop]: Abstraction has 455 states and 608 transitions. [2020-12-22 08:43:18,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 08:43:18,458 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 608 transitions. [2020-12-22 08:43:18,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:43:18,459 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:43:18,459 INFO L422 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] [2020-12-22 08:43:18,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-12-22 08:43:18,460 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:43:18,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:43:18,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1074760314, now seen corresponding path program 1 times [2020-12-22 08:43:18,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:43:18,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025332182] [2020-12-22 08:43:18,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:43:18,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:43:18,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:43:18,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025332182] [2020-12-22 08:43:18,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:43:18,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-12-22 08:43:18,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965635378] [2020-12-22 08:43:18,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 08:43:18,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:43:18,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 08:43:18,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-12-22 08:43:18,992 INFO L87 Difference]: Start difference. First operand 455 states and 608 transitions. Second operand 12 states. [2020-12-22 08:43:19,563 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 30 [2020-12-22 08:43:19,716 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 30 [2020-12-22 08:43:19,960 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 26 [2020-12-22 08:43:20,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:43:20,847 INFO L93 Difference]: Finished difference Result 977 states and 1359 transitions. [2020-12-22 08:43:20,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 08:43:20,849 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 67 [2020-12-22 08:43:20,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:43:20,850 INFO L225 Difference]: With dead ends: 977 [2020-12-22 08:43:20,850 INFO L226 Difference]: Without dead ends: 754 [2020-12-22 08:43:20,852 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2020-12-22 08:43:20,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2020-12-22 08:43:21,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 434. [2020-12-22 08:43:21,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2020-12-22 08:43:21,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 582 transitions. [2020-12-22 08:43:21,039 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 582 transitions. Word has length 67 [2020-12-22 08:43:21,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:43:21,039 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 582 transitions. [2020-12-22 08:43:21,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 08:43:21,039 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 582 transitions. [2020-12-22 08:43:21,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:43:21,040 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:43:21,041 INFO L422 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] [2020-12-22 08:43:21,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-12-22 08:43:21,042 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:43:21,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:43:21,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1673815221, now seen corresponding path program 1 times [2020-12-22 08:43:21,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:43:21,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027697180] [2020-12-22 08:43:21,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:43:21,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:43:21,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:43:21,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027697180] [2020-12-22 08:43:21,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:43:21,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-12-22 08:43:21,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305239152] [2020-12-22 08:43:21,566 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 08:43:21,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:43:21,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 08:43:21,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-12-22 08:43:21,568 INFO L87 Difference]: Start difference. First operand 434 states and 582 transitions. Second operand 13 states. [2020-12-22 08:43:22,292 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-12-22 08:43:22,446 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-12-22 08:43:22,818 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2020-12-22 08:43:23,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:43:23,840 INFO L93 Difference]: Finished difference Result 1156 states and 1634 transitions. [2020-12-22 08:43:23,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 08:43:23,842 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 67 [2020-12-22 08:43:23,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:43:23,844 INFO L225 Difference]: With dead ends: 1156 [2020-12-22 08:43:23,844 INFO L226 Difference]: Without dead ends: 942 [2020-12-22 08:43:23,845 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=142, Invalid=364, Unknown=0, NotChecked=0, Total=506 [2020-12-22 08:43:23,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2020-12-22 08:43:24,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 414. [2020-12-22 08:43:24,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 414 states. [2020-12-22 08:43:24,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 552 transitions. [2020-12-22 08:43:24,011 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 552 transitions. Word has length 67 [2020-12-22 08:43:24,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:43:24,011 INFO L481 AbstractCegarLoop]: Abstraction has 414 states and 552 transitions. [2020-12-22 08:43:24,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 08:43:24,012 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 552 transitions. [2020-12-22 08:43:24,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:43:24,012 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:43:24,013 INFO L422 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] [2020-12-22 08:43:24,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-12-22 08:43:24,013 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:43:24,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:43:24,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1241294901, now seen corresponding path program 1 times [2020-12-22 08:43:24,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:43:24,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873601914] [2020-12-22 08:43:24,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:43:24,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:43:24,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:43:24,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873601914] [2020-12-22 08:43:24,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:43:24,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-12-22 08:43:24,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533744096] [2020-12-22 08:43:24,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-22 08:43:24,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:43:24,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-22 08:43:24,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2020-12-22 08:43:24,798 INFO L87 Difference]: Start difference. First operand 414 states and 552 transitions. Second operand 16 states. [2020-12-22 08:43:25,440 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 34 [2020-12-22 08:43:25,651 WARN L197 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-12-22 08:43:25,830 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36 [2020-12-22 08:43:26,118 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36 [2020-12-22 08:43:26,636 WARN L197 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2020-12-22 08:43:27,396 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 33 [2020-12-22 08:43:28,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:43:28,503 INFO L93 Difference]: Finished difference Result 1013 states and 1387 transitions. [2020-12-22 08:43:28,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-22 08:43:28,506 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 67 [2020-12-22 08:43:28,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:43:28,508 INFO L225 Difference]: With dead ends: 1013 [2020-12-22 08:43:28,508 INFO L226 Difference]: Without dead ends: 1009 [2020-12-22 08:43:28,509 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=209, Invalid=661, Unknown=0, NotChecked=0, Total=870 [2020-12-22 08:43:28,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2020-12-22 08:43:28,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 414. [2020-12-22 08:43:28,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 414 states. [2020-12-22 08:43:28,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 552 transitions. [2020-12-22 08:43:28,670 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 552 transitions. Word has length 67 [2020-12-22 08:43:28,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:43:28,671 INFO L481 AbstractCegarLoop]: Abstraction has 414 states and 552 transitions. [2020-12-22 08:43:28,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-22 08:43:28,671 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 552 transitions. [2020-12-22 08:43:28,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:43:28,672 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:43:28,672 INFO L422 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] [2020-12-22 08:43:28,672 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-12-22 08:43:28,672 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:43:28,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:43:28,673 INFO L82 PathProgramCache]: Analyzing trace with hash -539222247, now seen corresponding path program 1 times [2020-12-22 08:43:28,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:43:28,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615058121] [2020-12-22 08:43:28,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:43:28,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:43:29,355 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 20 [2020-12-22 08:43:29,514 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 27 [2020-12-22 08:43:30,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:43:30,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615058121] [2020-12-22 08:43:30,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:43:30,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-12-22 08:43:30,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511176023] [2020-12-22 08:43:30,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-22 08:43:30,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:43:30,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-22 08:43:30,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2020-12-22 08:43:30,066 INFO L87 Difference]: Start difference. First operand 414 states and 552 transitions. Second operand 19 states. [2020-12-22 08:43:30,267 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 34 [2020-12-22 08:43:30,575 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 29 [2020-12-22 08:43:30,759 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 32 [2020-12-22 08:43:30,953 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2020-12-22 08:43:31,169 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 36 [2020-12-22 08:43:31,533 WARN L197 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2020-12-22 08:43:31,860 WARN L197 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-12-22 08:43:32,134 WARN L197 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2020-12-22 08:43:32,401 WARN L197 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2020-12-22 08:43:32,721 WARN L197 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2020-12-22 08:43:35,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:43:35,079 INFO L93 Difference]: Finished difference Result 1114 states and 1579 transitions. [2020-12-22 08:43:35,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-22 08:43:35,081 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 67 [2020-12-22 08:43:35,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:43:35,082 INFO L225 Difference]: With dead ends: 1114 [2020-12-22 08:43:35,082 INFO L226 Difference]: Without dead ends: 899 [2020-12-22 08:43:35,083 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=195, Invalid=735, Unknown=0, NotChecked=0, Total=930 [2020-12-22 08:43:35,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2020-12-22 08:43:35,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 405. [2020-12-22 08:43:35,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 405 states. [2020-12-22 08:43:35,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 539 transitions. [2020-12-22 08:43:35,248 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 539 transitions. Word has length 67 [2020-12-22 08:43:35,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:43:35,248 INFO L481 AbstractCegarLoop]: Abstraction has 405 states and 539 transitions. [2020-12-22 08:43:35,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-22 08:43:35,248 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 539 transitions. [2020-12-22 08:43:35,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:43:35,249 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:43:35,249 INFO L422 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] [2020-12-22 08:43:35,249 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-12-22 08:43:35,250 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:43:35,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:43:35,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1128954968, now seen corresponding path program 1 times [2020-12-22 08:43:35,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:43:35,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512015877] [2020-12-22 08:43:35,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:43:35,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:43:35,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:43:35,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512015877] [2020-12-22 08:43:35,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:43:35,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:43:35,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250854140] [2020-12-22 08:43:35,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:43:35,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:43:35,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:43:35,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:43:35,412 INFO L87 Difference]: Start difference. First operand 405 states and 539 transitions. Second operand 9 states. [2020-12-22 08:43:36,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:43:36,781 INFO L93 Difference]: Finished difference Result 692 states and 938 transitions. [2020-12-22 08:43:36,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 08:43:36,783 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 67 [2020-12-22 08:43:36,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:43:36,785 INFO L225 Difference]: With dead ends: 692 [2020-12-22 08:43:36,785 INFO L226 Difference]: Without dead ends: 685 [2020-12-22 08:43:36,786 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-12-22 08:43:36,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2020-12-22 08:43:37,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 405. [2020-12-22 08:43:37,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 405 states. [2020-12-22 08:43:37,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 538 transitions. [2020-12-22 08:43:37,012 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 538 transitions. Word has length 67 [2020-12-22 08:43:37,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:43:37,012 INFO L481 AbstractCegarLoop]: Abstraction has 405 states and 538 transitions. [2020-12-22 08:43:37,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:43:37,012 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 538 transitions. [2020-12-22 08:43:37,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:43:37,013 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:43:37,013 INFO L422 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] [2020-12-22 08:43:37,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-12-22 08:43:37,013 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:43:37,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:43:37,013 INFO L82 PathProgramCache]: Analyzing trace with hash -710008920, now seen corresponding path program 1 times [2020-12-22 08:43:37,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:43:37,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920877846] [2020-12-22 08:43:37,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:43:37,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:43:37,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:43:37,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920877846] [2020-12-22 08:43:37,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:43:37,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 08:43:37,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531309990] [2020-12-22 08:43:37,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 08:43:37,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:43:37,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 08:43:37,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:43:37,289 INFO L87 Difference]: Start difference. First operand 405 states and 538 transitions. Second operand 11 states. [2020-12-22 08:43:37,408 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 27 [2020-12-22 08:43:37,660 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2020-12-22 08:43:37,983 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2020-12-22 08:43:39,099 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 34 [2020-12-22 08:43:39,306 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2020-12-22 08:43:44,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:43:44,431 INFO L93 Difference]: Finished difference Result 3427 states and 4967 transitions. [2020-12-22 08:43:44,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-12-22 08:43:44,433 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2020-12-22 08:43:44,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:43:44,441 INFO L225 Difference]: With dead ends: 3427 [2020-12-22 08:43:44,442 INFO L226 Difference]: Without dead ends: 3175 [2020-12-22 08:43:44,443 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=374, Invalid=1186, Unknown=0, NotChecked=0, Total=1560 [2020-12-22 08:43:44,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3175 states. [2020-12-22 08:43:44,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3175 to 413. [2020-12-22 08:43:44,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 413 states. [2020-12-22 08:43:44,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 546 transitions. [2020-12-22 08:43:44,747 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 546 transitions. Word has length 67 [2020-12-22 08:43:44,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:43:44,748 INFO L481 AbstractCegarLoop]: Abstraction has 413 states and 546 transitions. [2020-12-22 08:43:44,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 08:43:44,748 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 546 transitions. [2020-12-22 08:43:44,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:43:44,748 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:43:44,749 INFO L422 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] [2020-12-22 08:43:44,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-12-22 08:43:44,749 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:43:44,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:43:44,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1303055616, now seen corresponding path program 1 times [2020-12-22 08:43:44,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:43:44,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877574564] [2020-12-22 08:43:44,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:43:44,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:43:45,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:43:45,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877574564] [2020-12-22 08:43:45,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:43:45,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 08:43:45,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942317451] [2020-12-22 08:43:45,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 08:43:45,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:43:45,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 08:43:45,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:43:45,024 INFO L87 Difference]: Start difference. First operand 413 states and 546 transitions. Second operand 11 states. [2020-12-22 08:43:45,651 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2020-12-22 08:43:47,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:43:47,975 INFO L93 Difference]: Finished difference Result 1255 states and 1765 transitions. [2020-12-22 08:43:47,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-12-22 08:43:47,977 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2020-12-22 08:43:47,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:43:47,980 INFO L225 Difference]: With dead ends: 1255 [2020-12-22 08:43:47,980 INFO L226 Difference]: Without dead ends: 1248 [2020-12-22 08:43:47,981 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=204, Invalid=552, Unknown=0, NotChecked=0, Total=756 [2020-12-22 08:43:47,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2020-12-22 08:43:48,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 413. [2020-12-22 08:43:48,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 413 states. [2020-12-22 08:43:48,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 545 transitions. [2020-12-22 08:43:48,309 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 545 transitions. Word has length 67 [2020-12-22 08:43:48,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:43:48,309 INFO L481 AbstractCegarLoop]: Abstraction has 413 states and 545 transitions. [2020-12-22 08:43:48,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 08:43:48,310 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 545 transitions. [2020-12-22 08:43:48,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:43:48,310 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:43:48,310 INFO L422 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] [2020-12-22 08:43:48,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-12-22 08:43:48,311 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:43:48,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:43:48,311 INFO L82 PathProgramCache]: Analyzing trace with hash 926661436, now seen corresponding path program 1 times [2020-12-22 08:43:48,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:43:48,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690431767] [2020-12-22 08:43:48,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:43:48,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:43:49,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:43:49,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690431767] [2020-12-22 08:43:49,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:43:49,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2020-12-22 08:43:49,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749547587] [2020-12-22 08:43:49,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-12-22 08:43:49,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:43:49,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-12-22 08:43:49,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2020-12-22 08:43:49,667 INFO L87 Difference]: Start difference. First operand 413 states and 545 transitions. Second operand 20 states. [2020-12-22 08:43:49,890 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2020-12-22 08:43:50,303 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 23 [2020-12-22 08:43:50,536 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 38 [2020-12-22 08:43:50,778 WARN L197 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2020-12-22 08:43:51,109 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2020-12-22 08:43:51,374 WARN L197 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 43 [2020-12-22 08:43:51,706 WARN L197 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2020-12-22 08:43:52,051 WARN L197 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2020-12-22 08:43:52,400 WARN L197 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2020-12-22 08:43:52,802 WARN L197 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2020-12-22 08:43:53,065 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30 [2020-12-22 08:43:53,491 WARN L197 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2020-12-22 08:43:53,854 WARN L197 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2020-12-22 08:43:54,218 WARN L197 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2020-12-22 08:43:54,916 WARN L197 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2020-12-22 08:43:55,350 WARN L197 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2020-12-22 08:43:55,767 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 30 [2020-12-22 08:43:56,011 WARN L197 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 43 [2020-12-22 08:43:57,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:43:57,754 INFO L93 Difference]: Finished difference Result 1114 states and 1532 transitions. [2020-12-22 08:43:57,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-22 08:43:57,756 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 67 [2020-12-22 08:43:57,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:43:57,757 INFO L225 Difference]: With dead ends: 1114 [2020-12-22 08:43:57,757 INFO L226 Difference]: Without dead ends: 1110 [2020-12-22 08:43:57,768 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=334, Invalid=1226, Unknown=0, NotChecked=0, Total=1560 [2020-12-22 08:43:57,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1110 states. [2020-12-22 08:43:57,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1110 to 421. [2020-12-22 08:43:57,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2020-12-22 08:43:57,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 556 transitions. [2020-12-22 08:43:57,963 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 556 transitions. Word has length 67 [2020-12-22 08:43:57,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:43:57,963 INFO L481 AbstractCegarLoop]: Abstraction has 421 states and 556 transitions. [2020-12-22 08:43:57,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-12-22 08:43:57,963 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 556 transitions. [2020-12-22 08:43:57,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:43:57,964 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:43:57,964 INFO L422 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] [2020-12-22 08:43:57,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-12-22 08:43:57,964 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:43:57,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:43:57,965 INFO L82 PathProgramCache]: Analyzing trace with hash 763644804, now seen corresponding path program 1 times [2020-12-22 08:43:57,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:43:57,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876987890] [2020-12-22 08:43:57,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:43:57,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:43:58,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:43:58,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876987890] [2020-12-22 08:43:58,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:43:58,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-12-22 08:43:58,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952457086] [2020-12-22 08:43:58,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-22 08:43:58,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:43:58,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-22 08:43:58,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-12-22 08:43:58,754 INFO L87 Difference]: Start difference. First operand 421 states and 556 transitions. Second operand 14 states. [2020-12-22 08:43:59,074 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 23 [2020-12-22 08:43:59,345 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 23 [2020-12-22 08:43:59,590 WARN L197 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 37 [2020-12-22 08:43:59,812 WARN L197 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 36 [2020-12-22 08:44:00,021 WARN L197 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 36 [2020-12-22 08:44:00,231 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2020-12-22 08:44:00,509 WARN L197 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2020-12-22 08:44:01,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:44:01,898 INFO L93 Difference]: Finished difference Result 1173 states and 1644 transitions. [2020-12-22 08:44:01,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-22 08:44:01,899 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 67 [2020-12-22 08:44:01,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:44:01,901 INFO L225 Difference]: With dead ends: 1173 [2020-12-22 08:44:01,901 INFO L226 Difference]: Without dead ends: 1141 [2020-12-22 08:44:01,902 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=159, Invalid=543, Unknown=0, NotChecked=0, Total=702 [2020-12-22 08:44:01,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1141 states. [2020-12-22 08:44:02,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1141 to 413. [2020-12-22 08:44:02,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 413 states. [2020-12-22 08:44:02,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 544 transitions. [2020-12-22 08:44:02,154 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 544 transitions. Word has length 67 [2020-12-22 08:44:02,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:44:02,154 INFO L481 AbstractCegarLoop]: Abstraction has 413 states and 544 transitions. [2020-12-22 08:44:02,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-22 08:44:02,154 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 544 transitions. [2020-12-22 08:44:02,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 08:44:02,155 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:44:02,155 INFO L422 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] [2020-12-22 08:44:02,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-12-22 08:44:02,155 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:44:02,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:44:02,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1661843325, now seen corresponding path program 1 times [2020-12-22 08:44:02,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:44:02,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031683552] [2020-12-22 08:44:02,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:44:02,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:44:02,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:44:02,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031683552] [2020-12-22 08:44:02,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:44:02,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:44:02,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119426278] [2020-12-22 08:44:02,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:44:02,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:44:02,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:44:02,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:44:02,325 INFO L87 Difference]: Start difference. First operand 413 states and 544 transitions. Second operand 9 states. [2020-12-22 08:44:03,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:44:03,809 INFO L93 Difference]: Finished difference Result 700 states and 943 transitions. [2020-12-22 08:44:03,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 08:44:03,810 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 68 [2020-12-22 08:44:03,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:44:03,812 INFO L225 Difference]: With dead ends: 700 [2020-12-22 08:44:03,812 INFO L226 Difference]: Without dead ends: 693 [2020-12-22 08:44:03,814 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=112, Invalid=268, Unknown=0, NotChecked=0, Total=380 [2020-12-22 08:44:03,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2020-12-22 08:44:04,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 409. [2020-12-22 08:44:04,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2020-12-22 08:44:04,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 539 transitions. [2020-12-22 08:44:04,011 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 539 transitions. Word has length 68 [2020-12-22 08:44:04,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:44:04,011 INFO L481 AbstractCegarLoop]: Abstraction has 409 states and 539 transitions. [2020-12-22 08:44:04,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:44:04,011 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 539 transitions. [2020-12-22 08:44:04,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 08:44:04,012 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:44:04,012 INFO L422 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] [2020-12-22 08:44:04,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-12-22 08:44:04,013 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:44:04,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:44:04,013 INFO L82 PathProgramCache]: Analyzing trace with hash 164552875, now seen corresponding path program 1 times [2020-12-22 08:44:04,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:44:04,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239171613] [2020-12-22 08:44:04,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:44:04,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:44:05,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:44:05,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239171613] [2020-12-22 08:44:05,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:44:05,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2020-12-22 08:44:05,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968697289] [2020-12-22 08:44:05,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-22 08:44:05,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:44:05,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-22 08:44:05,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2020-12-22 08:44:05,341 INFO L87 Difference]: Start difference. First operand 409 states and 539 transitions. Second operand 23 states. [2020-12-22 08:44:05,802 WARN L197 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 88 [2020-12-22 08:44:06,199 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 31 [2020-12-22 08:44:06,436 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2020-12-22 08:44:06,677 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-12-22 08:44:06,890 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2020-12-22 08:44:07,343 WARN L197 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2020-12-22 08:44:07,723 WARN L197 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2020-12-22 08:44:08,161 WARN L197 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2020-12-22 08:44:08,453 WARN L197 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2020-12-22 08:44:08,722 WARN L197 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2020-12-22 08:44:09,042 WARN L197 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2020-12-22 08:44:10,874 WARN L197 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-12-22 08:44:13,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:44:13,335 INFO L93 Difference]: Finished difference Result 891 states and 1236 transitions. [2020-12-22 08:44:13,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-12-22 08:44:13,337 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 68 [2020-12-22 08:44:13,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:44:13,338 INFO L225 Difference]: With dead ends: 891 [2020-12-22 08:44:13,338 INFO L226 Difference]: Without dead ends: 887 [2020-12-22 08:44:13,339 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=245, Invalid=1161, Unknown=0, NotChecked=0, Total=1406 [2020-12-22 08:44:13,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2020-12-22 08:44:13,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 403. [2020-12-22 08:44:13,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-12-22 08:44:13,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 532 transitions. [2020-12-22 08:44:13,556 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 532 transitions. Word has length 68 [2020-12-22 08:44:13,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:44:13,556 INFO L481 AbstractCegarLoop]: Abstraction has 403 states and 532 transitions. [2020-12-22 08:44:13,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-12-22 08:44:13,556 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 532 transitions. [2020-12-22 08:44:13,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 08:44:13,557 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:44:13,557 INFO L422 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] [2020-12-22 08:44:13,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-12-22 08:44:13,557 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:44:13,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:44:13,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1536243, now seen corresponding path program 1 times [2020-12-22 08:44:13,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:44:13,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977521143] [2020-12-22 08:44:13,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:44:13,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:44:13,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:44:13,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977521143] [2020-12-22 08:44:13,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:44:13,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-12-22 08:44:13,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421785055] [2020-12-22 08:44:13,992 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 08:44:13,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:44:13,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 08:44:13,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:44:13,993 INFO L87 Difference]: Start difference. First operand 403 states and 532 transitions. Second operand 11 states. [2020-12-22 08:44:14,504 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 30 [2020-12-22 08:44:14,656 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 30 [2020-12-22 08:44:15,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:44:15,388 INFO L93 Difference]: Finished difference Result 693 states and 941 transitions. [2020-12-22 08:44:15,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 08:44:15,390 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 68 [2020-12-22 08:44:15,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:44:15,391 INFO L225 Difference]: With dead ends: 693 [2020-12-22 08:44:15,391 INFO L226 Difference]: Without dead ends: 661 [2020-12-22 08:44:15,391 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-12-22 08:44:15,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2020-12-22 08:44:15,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 371. [2020-12-22 08:44:15,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2020-12-22 08:44:15,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 497 transitions. [2020-12-22 08:44:15,592 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 497 transitions. Word has length 68 [2020-12-22 08:44:15,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:44:15,593 INFO L481 AbstractCegarLoop]: Abstraction has 371 states and 497 transitions. [2020-12-22 08:44:15,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 08:44:15,593 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 497 transitions. [2020-12-22 08:44:15,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 08:44:15,593 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:44:15,593 INFO L422 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] [2020-12-22 08:44:15,594 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-12-22 08:44:15,594 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:44:15,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:44:15,594 INFO L82 PathProgramCache]: Analyzing trace with hash 816797930, now seen corresponding path program 1 times [2020-12-22 08:44:15,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:44:15,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406087244] [2020-12-22 08:44:15,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:44:15,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:44:15,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:44:15,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406087244] [2020-12-22 08:44:15,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:44:15,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:44:15,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111585189] [2020-12-22 08:44:15,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:44:15,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:44:15,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:44:15,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:44:15,791 INFO L87 Difference]: Start difference. First operand 371 states and 497 transitions. Second operand 9 states. [2020-12-22 08:44:17,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:44:17,434 INFO L93 Difference]: Finished difference Result 921 states and 1280 transitions. [2020-12-22 08:44:17,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 08:44:17,436 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 68 [2020-12-22 08:44:17,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:44:17,436 INFO L225 Difference]: With dead ends: 921 [2020-12-22 08:44:17,437 INFO L226 Difference]: Without dead ends: 669 [2020-12-22 08:44:17,437 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2020-12-22 08:44:17,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2020-12-22 08:44:17,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 363. [2020-12-22 08:44:17,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2020-12-22 08:44:17,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 487 transitions. [2020-12-22 08:44:17,680 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 487 transitions. Word has length 68 [2020-12-22 08:44:17,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:44:17,680 INFO L481 AbstractCegarLoop]: Abstraction has 363 states and 487 transitions. [2020-12-22 08:44:17,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:44:17,680 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 487 transitions. [2020-12-22 08:44:17,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 08:44:17,681 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:44:17,681 INFO L422 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] [2020-12-22 08:44:17,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-12-22 08:44:17,681 INFO L429 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:44:17,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:44:17,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1670080552, now seen corresponding path program 1 times [2020-12-22 08:44:17,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:44:17,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378391758] [2020-12-22 08:44:17,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:44:17,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:44:19,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:44:19,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378391758] [2020-12-22 08:44:19,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:44:19,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2020-12-22 08:44:19,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215410693] [2020-12-22 08:44:19,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-22 08:44:19,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:44:19,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-22 08:44:19,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=442, Unknown=0, NotChecked=0, Total=506 [2020-12-22 08:44:19,012 INFO L87 Difference]: Start difference. First operand 363 states and 487 transitions. Second operand 23 states. [2020-12-22 08:44:19,512 WARN L197 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 88 [2020-12-22 08:44:20,132 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 31 [2020-12-22 08:44:20,366 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 32 [2020-12-22 08:44:20,613 WARN L197 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 39 [2020-12-22 08:44:21,072 WARN L197 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2020-12-22 08:44:21,440 WARN L197 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2020-12-22 08:44:21,877 WARN L197 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2020-12-22 08:44:22,218 WARN L197 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2020-12-22 08:44:22,551 WARN L197 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2020-12-22 08:44:22,881 WARN L197 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2020-12-22 08:44:23,254 WARN L197 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2020-12-22 08:44:23,573 WARN L197 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2020-12-22 08:44:26,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:44:26,666 INFO L93 Difference]: Finished difference Result 643 states and 874 transitions. [2020-12-22 08:44:26,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-12-22 08:44:26,667 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 69 [2020-12-22 08:44:26,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:44:26,668 INFO L225 Difference]: With dead ends: 643 [2020-12-22 08:44:26,669 INFO L226 Difference]: Without dead ends: 635 [2020-12-22 08:44:26,670 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=334, Invalid=1306, Unknown=0, NotChecked=0, Total=1640 [2020-12-22 08:44:26,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2020-12-22 08:44:26,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 373. [2020-12-22 08:44:26,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2020-12-22 08:44:26,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 498 transitions. [2020-12-22 08:44:26,874 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 498 transitions. Word has length 69 [2020-12-22 08:44:26,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:44:26,875 INFO L481 AbstractCegarLoop]: Abstraction has 373 states and 498 transitions. [2020-12-22 08:44:26,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-12-22 08:44:26,875 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 498 transitions. [2020-12-22 08:44:26,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 08:44:26,876 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:44:26,876 INFO L422 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] [2020-12-22 08:44:26,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-12-22 08:44:26,876 INFO L429 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:44:26,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:44:26,877 INFO L82 PathProgramCache]: Analyzing trace with hash 1308874992, now seen corresponding path program 1 times [2020-12-22 08:44:26,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:44:26,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843122808] [2020-12-22 08:44:26,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:44:26,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:44:28,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:44:28,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843122808] [2020-12-22 08:44:28,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:44:28,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2020-12-22 08:44:28,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060881659] [2020-12-22 08:44:28,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-12-22 08:44:28,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:44:28,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-12-22 08:44:28,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2020-12-22 08:44:28,110 INFO L87 Difference]: Start difference. First operand 373 states and 498 transitions. Second operand 21 states. [2020-12-22 08:44:28,584 WARN L197 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2020-12-22 08:44:28,985 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 22 [2020-12-22 08:44:29,182 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 28 [2020-12-22 08:44:29,387 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 29 [2020-12-22 08:44:29,602 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 30 [2020-12-22 08:44:30,030 WARN L197 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2020-12-22 08:44:30,355 WARN L197 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 52 [2020-12-22 08:44:30,745 WARN L197 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2020-12-22 08:44:31,027 WARN L197 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 44 [2020-12-22 08:44:31,295 WARN L197 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 44 [2020-12-22 08:44:36,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:44:36,013 INFO L93 Difference]: Finished difference Result 1286 states and 1849 transitions. [2020-12-22 08:44:36,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-22 08:44:36,015 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 69 [2020-12-22 08:44:36,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:44:36,016 INFO L225 Difference]: With dead ends: 1286 [2020-12-22 08:44:36,017 INFO L226 Difference]: Without dead ends: 1065 [2020-12-22 08:44:36,018 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=250, Invalid=1310, Unknown=0, NotChecked=0, Total=1560 [2020-12-22 08:44:36,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2020-12-22 08:44:36,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 384. [2020-12-22 08:44:36,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 384 states. [2020-12-22 08:44:36,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 511 transitions. [2020-12-22 08:44:36,228 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 511 transitions. Word has length 69 [2020-12-22 08:44:36,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:44:36,228 INFO L481 AbstractCegarLoop]: Abstraction has 384 states and 511 transitions. [2020-12-22 08:44:36,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-12-22 08:44:36,229 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 511 transitions. [2020-12-22 08:44:36,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 08:44:36,229 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:44:36,229 INFO L422 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] [2020-12-22 08:44:36,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-12-22 08:44:36,229 INFO L429 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:44:36,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:44:36,230 INFO L82 PathProgramCache]: Analyzing trace with hash -284944504, now seen corresponding path program 1 times [2020-12-22 08:44:36,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:44:36,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266754939] [2020-12-22 08:44:36,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:44:36,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:44:37,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:44:37,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266754939] [2020-12-22 08:44:37,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:44:37,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2020-12-22 08:44:37,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031664176] [2020-12-22 08:44:37,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-22 08:44:37,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:44:37,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-22 08:44:37,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=442, Unknown=0, NotChecked=0, Total=506 [2020-12-22 08:44:37,645 INFO L87 Difference]: Start difference. First operand 384 states and 511 transitions. Second operand 23 states. [2020-12-22 08:44:38,146 WARN L197 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 92 [2020-12-22 08:44:38,528 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 28 [2020-12-22 08:44:38,693 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 28 [2020-12-22 08:44:38,911 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2020-12-22 08:44:39,144 WARN L197 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 36 [2020-12-22 08:44:39,379 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2020-12-22 08:44:39,836 WARN L197 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2020-12-22 08:44:40,216 WARN L197 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2020-12-22 08:44:40,707 WARN L197 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 74 [2020-12-22 08:44:41,042 WARN L197 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2020-12-22 08:44:41,359 WARN L197 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2020-12-22 08:44:45,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:44:45,719 INFO L93 Difference]: Finished difference Result 1077 states and 1529 transitions. [2020-12-22 08:44:45,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-22 08:44:45,721 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 69 [2020-12-22 08:44:45,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:44:45,728 INFO L225 Difference]: With dead ends: 1077 [2020-12-22 08:44:45,729 INFO L226 Difference]: Without dead ends: 1069 [2020-12-22 08:44:45,730 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=317, Invalid=1489, Unknown=0, NotChecked=0, Total=1806 [2020-12-22 08:44:45,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2020-12-22 08:44:45,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 388. [2020-12-22 08:44:45,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 388 states. [2020-12-22 08:44:45,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 516 transitions. [2020-12-22 08:44:45,984 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 516 transitions. Word has length 69 [2020-12-22 08:44:45,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:44:45,984 INFO L481 AbstractCegarLoop]: Abstraction has 388 states and 516 transitions. [2020-12-22 08:44:45,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-12-22 08:44:45,984 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 516 transitions. [2020-12-22 08:44:45,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-22 08:44:45,985 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:44:45,985 INFO L422 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] [2020-12-22 08:44:45,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-12-22 08:44:45,985 INFO L429 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:44:45,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:44:45,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1224508951, now seen corresponding path program 1 times [2020-12-22 08:44:45,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:44:45,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669705596] [2020-12-22 08:44:45,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:44:46,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:44:46,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:44:46,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669705596] [2020-12-22 08:44:46,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:44:46,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 08:44:46,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754770457] [2020-12-22 08:44:46,562 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 08:44:46,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:44:46,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 08:44:46,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:44:46,563 INFO L87 Difference]: Start difference. First operand 388 states and 516 transitions. Second operand 10 states. [2020-12-22 08:44:47,142 WARN L197 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-12-22 08:44:47,379 WARN L197 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-12-22 08:44:47,648 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 29 [2020-12-22 08:44:49,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:44:49,494 INFO L93 Difference]: Finished difference Result 1258 states and 1818 transitions. [2020-12-22 08:44:49,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-22 08:44:49,496 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 70 [2020-12-22 08:44:49,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:44:49,498 INFO L225 Difference]: With dead ends: 1258 [2020-12-22 08:44:49,499 INFO L226 Difference]: Without dead ends: 1224 [2020-12-22 08:44:49,499 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=133, Invalid=329, Unknown=0, NotChecked=0, Total=462 [2020-12-22 08:44:49,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2020-12-22 08:44:49,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 354. [2020-12-22 08:44:49,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2020-12-22 08:44:49,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 478 transitions. [2020-12-22 08:44:49,752 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 478 transitions. Word has length 70 [2020-12-22 08:44:49,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:44:49,752 INFO L481 AbstractCegarLoop]: Abstraction has 354 states and 478 transitions. [2020-12-22 08:44:49,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 08:44:49,752 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 478 transitions. [2020-12-22 08:44:49,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-22 08:44:49,753 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:44:49,753 INFO L422 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] [2020-12-22 08:44:49,753 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-12-22 08:44:49,753 INFO L429 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:44:49,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:44:49,753 INFO L82 PathProgramCache]: Analyzing trace with hash -933011809, now seen corresponding path program 1 times [2020-12-22 08:44:49,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:44:49,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127028246] [2020-12-22 08:44:49,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:44:49,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:44:50,123 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 29 [2020-12-22 08:44:50,294 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 30 [2020-12-22 08:44:50,437 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2020-12-22 08:44:50,589 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 27 [2020-12-22 08:44:51,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:44:51,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127028246] [2020-12-22 08:44:51,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:44:51,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2020-12-22 08:44:51,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343023286] [2020-12-22 08:44:51,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-12-22 08:44:51,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:44:51,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-12-22 08:44:51,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2020-12-22 08:44:51,638 INFO L87 Difference]: Start difference. First operand 354 states and 478 transitions. Second operand 20 states. [2020-12-22 08:44:51,845 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 32 [2020-12-22 08:44:52,295 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2020-12-22 08:44:52,510 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 33 [2020-12-22 08:44:52,890 WARN L197 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 35 [2020-12-22 08:44:53,175 WARN L197 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2020-12-22 08:44:53,557 WARN L197 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2020-12-22 08:44:54,050 WARN L197 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2020-12-22 08:44:54,413 WARN L197 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2020-12-22 08:44:54,773 WARN L197 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2020-12-22 08:44:56,118 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 26 [2020-12-22 08:44:56,574 WARN L197 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 41 [2020-12-22 08:44:57,591 WARN L197 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2020-12-22 08:45:01,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:45:01,741 INFO L93 Difference]: Finished difference Result 2018 states and 2930 transitions. [2020-12-22 08:45:01,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-22 08:45:01,743 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 70 [2020-12-22 08:45:01,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:45:01,746 INFO L225 Difference]: With dead ends: 2018 [2020-12-22 08:45:01,746 INFO L226 Difference]: Without dead ends: 2012 [2020-12-22 08:45:01,747 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=283, Invalid=1199, Unknown=0, NotChecked=0, Total=1482 [2020-12-22 08:45:01,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2012 states. [2020-12-22 08:45:01,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2012 to 365. [2020-12-22 08:45:01,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-12-22 08:45:01,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 492 transitions. [2020-12-22 08:45:01,991 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 492 transitions. Word has length 70 [2020-12-22 08:45:01,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:45:01,991 INFO L481 AbstractCegarLoop]: Abstraction has 365 states and 492 transitions. [2020-12-22 08:45:01,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-12-22 08:45:01,991 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 492 transitions. [2020-12-22 08:45:01,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-22 08:45:01,991 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:45:01,992 INFO L422 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] [2020-12-22 08:45:01,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-12-22 08:45:01,992 INFO L429 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:45:01,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:45:01,992 INFO L82 PathProgramCache]: Analyzing trace with hash 1768135991, now seen corresponding path program 1 times [2020-12-22 08:45:01,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:45:01,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139502926] [2020-12-22 08:45:01,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:45:02,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:45:02,772 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 29 [2020-12-22 08:45:02,923 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 28 [2020-12-22 08:45:03,073 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 28 [2020-12-22 08:45:03,235 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 28 [2020-12-22 08:45:03,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:45:03,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139502926] [2020-12-22 08:45:03,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:45:03,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-12-22 08:45:03,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016381212] [2020-12-22 08:45:03,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-22 08:45:03,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:45:03,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-22 08:45:03,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2020-12-22 08:45:03,609 INFO L87 Difference]: Start difference. First operand 365 states and 492 transitions. Second operand 19 states. [2020-12-22 08:45:03,878 WARN L197 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 29 [2020-12-22 08:45:04,457 WARN L197 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 27 [2020-12-22 08:45:04,803 WARN L197 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 30 [2020-12-22 08:45:05,118 WARN L197 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 36 [2020-12-22 08:45:05,513 WARN L197 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2020-12-22 08:45:05,996 WARN L197 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2020-12-22 08:45:06,324 WARN L197 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48 [2020-12-22 08:45:06,694 WARN L197 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48 [2020-12-22 08:45:07,039 WARN L197 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2020-12-22 08:45:07,923 WARN L197 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2020-12-22 08:45:10,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:45:10,669 INFO L93 Difference]: Finished difference Result 1016 states and 1431 transitions. [2020-12-22 08:45:10,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-22 08:45:10,671 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 70 [2020-12-22 08:45:10,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:45:10,672 INFO L225 Difference]: With dead ends: 1016 [2020-12-22 08:45:10,672 INFO L226 Difference]: Without dead ends: 1008 [2020-12-22 08:45:10,674 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=260, Invalid=1072, Unknown=0, NotChecked=0, Total=1332 [2020-12-22 08:45:10,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2020-12-22 08:45:10,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 366. [2020-12-22 08:45:10,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 366 states. [2020-12-22 08:45:10,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 494 transitions. [2020-12-22 08:45:10,885 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 494 transitions. Word has length 70 [2020-12-22 08:45:10,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:45:10,885 INFO L481 AbstractCegarLoop]: Abstraction has 366 states and 494 transitions. [2020-12-22 08:45:10,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-22 08:45:10,886 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 494 transitions. [2020-12-22 08:45:10,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-22 08:45:10,886 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:45:10,886 INFO L422 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] [2020-12-22 08:45:10,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-12-22 08:45:10,887 INFO L429 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:45:10,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:45:10,887 INFO L82 PathProgramCache]: Analyzing trace with hash -507700554, now seen corresponding path program 1 times [2020-12-22 08:45:10,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:45:10,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63836931] [2020-12-22 08:45:10,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:45:10,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:45:11,429 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2020-12-22 08:45:11,670 WARN L197 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-12-22 08:45:11,898 WARN L197 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2020-12-22 08:45:12,198 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2020-12-22 08:45:13,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:45:13,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63836931] [2020-12-22 08:45:13,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:45:13,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2020-12-22 08:45:13,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068463495] [2020-12-22 08:45:13,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-12-22 08:45:13,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:45:13,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-12-22 08:45:13,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2020-12-22 08:45:13,135 INFO L87 Difference]: Start difference. First operand 366 states and 494 transitions. Second operand 20 states. [2020-12-22 08:45:13,432 WARN L197 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2020-12-22 08:45:13,774 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 26 [2020-12-22 08:45:13,988 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 28 [2020-12-22 08:45:14,336 WARN L197 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 40