/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.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 20:52:52,706 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 20:52:52,708 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 20:52:52,763 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 20:52:52,764 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 20:52:52,768 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 20:52:52,771 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 20:52:52,776 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 20:52:52,779 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 20:52:52,785 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 20:52:52,789 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 20:52:52,791 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 20:52:52,791 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 20:52:52,794 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 20:52:52,796 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 20:52:52,798 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 20:52:52,800 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 20:52:52,804 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 20:52:52,810 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 20:52:52,818 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 20:52:52,820 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 20:52:52,822 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 20:52:52,824 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 20:52:52,826 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 20:52:52,834 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-06 20:52:52,835 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-06 20:52:52,835 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-06 20:52:52,837 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-06 20:52:52,838 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-06 20:52:52,839 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-06 20:52:52,839 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 20:52:52,840 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 20:52:52,842 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 20:52:52,843 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 20:52:52,856 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 20:52:52,857 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 20:52:52,858 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 20:52:52,865 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 20:52:52,865 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 20:52:52,866 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 20:52:52,867 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 20:52:52,870 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 20:52:52,918 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 20:52:52,919 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 20:52:52,922 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 20:52:52,923 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 20:52:52,923 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 20:52:52,923 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 20:52:52,923 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 20:52:52,923 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 20:52:52,924 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 20:52:52,924 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 20:52:52,925 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 20:52:52,925 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 20:52:52,926 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 20:52:52,926 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 20:52:52,926 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 20:52:52,926 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 20:52:52,926 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 20:52:52,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 20:52:52,927 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 20:52:52,927 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 20:52:52,927 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 20:52:52,928 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 20:52:52,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 20:52:52,928 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 20:52:52,928 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 20:52:52,928 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-bitabs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 20:52:53,341 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 20:52:53,372 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 20:52:53,376 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 20:52:53,378 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 20:52:53,381 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 20:52:53,382 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2021-01-06 20:52:53,477 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/7860f4135/d1ba49e2e8de4c7bbcdb3923e0658b5e/FLAG57ebe8b81 [2021-01-06 20:52:54,219 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 20:52:54,219 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2021-01-06 20:52:54,230 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/7860f4135/d1ba49e2e8de4c7bbcdb3923e0658b5e/FLAG57ebe8b81 [2021-01-06 20:52:54,489 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/7860f4135/d1ba49e2e8de4c7bbcdb3923e0658b5e [2021-01-06 20:52:54,496 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 20:52:54,500 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 20:52:54,506 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 20:52:54,506 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 20:52:54,510 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 20:52:54,511 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 08:52:54" (1/1) ... [2021-01-06 20:52:54,513 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d7e7506 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:52:54, skipping insertion in model container [2021-01-06 20:52:54,514 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 08:52:54" (1/1) ... [2021-01-06 20:52:54,522 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 20:52:54,587 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_1394~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~0,] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~0,] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~0,] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_1467~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_1~0,] left hand side expression in assignment: lhs: VariableLHS[~assert__arg~0,] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~1,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~1,] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~1,] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~1,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~1,] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~1,] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~__return_1532~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_2~0,] left hand side expression in assignment: lhs: VariableLHS[~assert__arg~1,] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~2,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~2,] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~2,] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~2,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~2,] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~2,] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~2,] left hand side expression in assignment: lhs: VariableLHS[~__return_1599~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_3~0,] left hand side expression in assignment: lhs: VariableLHS[~assert__arg~2,] [2021-01-06 20:52:54,880 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[6472,6485] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~2,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~2,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~2,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~2,] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~1,] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~1,] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~1,] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~1,] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~1,] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~1,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~__return_1677~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_4~0,] left hand side expression in assignment: lhs: VariableLHS[~assert__arg~3,] [2021-01-06 20:52:54,898 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[8667,8680] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~__return_1696~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] [2021-01-06 20:52:54,911 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 20:52:54,931 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_1394~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~0,] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~0,] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~0,] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_1467~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_1~0,] left hand side expression in assignment: lhs: VariableLHS[~assert__arg~0,] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~1,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~1,] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~1,] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~1,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~1,] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~1,] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~__return_1532~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_2~0,] left hand side expression in assignment: lhs: VariableLHS[~assert__arg~1,] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~2,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~2,] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~2,] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~2,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~2,] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~2,] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~2,] left hand side expression in assignment: lhs: VariableLHS[~__return_1599~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_3~0,] left hand side expression in assignment: lhs: VariableLHS[~assert__arg~2,] [2021-01-06 20:52:54,994 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[6472,6485] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~2,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~2,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~2,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~2,] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~1,] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~1,] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~1,] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~1,] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~1,] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~1,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~__return_1677~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_4~0,] left hand side expression in assignment: lhs: VariableLHS[~assert__arg~3,] [2021-01-06 20:52:55,007 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[8667,8680] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~__return_1696~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] [2021-01-06 20:52:55,018 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 20:52:55,058 INFO L208 MainTranslator]: Completed translation [2021-01-06 20:52:55,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:52:55 WrapperNode [2021-01-06 20:52:55,060 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 20:52:55,062 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 20:52:55,062 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 20:52:55,062 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 20:52:55,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:52:55" (1/1) ... [2021-01-06 20:52:55,083 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:52:55" (1/1) ... [2021-01-06 20:52:55,128 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 20:52:55,129 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 20:52:55,129 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 20:52:55,129 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 20:52:55,139 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:52:55" (1/1) ... [2021-01-06 20:52:55,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:52:55" (1/1) ... [2021-01-06 20:52:55,144 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:52:55" (1/1) ... [2021-01-06 20:52:55,144 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:52:55" (1/1) ... [2021-01-06 20:52:55,165 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:52:55" (1/1) ... [2021-01-06 20:52:55,178 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:52:55" (1/1) ... [2021-01-06 20:52:55,184 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:52:55" (1/1) ... [2021-01-06 20:52:55,197 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 20:52:55,198 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 20:52:55,198 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 20:52:55,199 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 20:52:55,199 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:52:55" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 20:52:55,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 20:52:55,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 20:52:55,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 20:52:55,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 20:52:56,271 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 20:52:56,271 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-01-06 20:52:56,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 08:52:56 BoogieIcfgContainer [2021-01-06 20:52:56,274 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 20:52:56,276 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 20:52:56,276 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 20:52:56,279 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 20:52:56,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 08:52:54" (1/3) ... [2021-01-06 20:52:56,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@303766c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 08:52:56, skipping insertion in model container [2021-01-06 20:52:56,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:52:55" (2/3) ... [2021-01-06 20:52:56,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@303766c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 08:52:56, skipping insertion in model container [2021-01-06 20:52:56,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 08:52:56" (3/3) ... [2021-01-06 20:52:56,283 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2021-01-06 20:52:56,290 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 20:52:56,295 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-01-06 20:52:56,314 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-01-06 20:52:56,343 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 20:52:56,343 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 20:52:56,343 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 20:52:56,343 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 20:52:56,343 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 20:52:56,344 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 20:52:56,344 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 20:52:56,344 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 20:52:56,361 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states. [2021-01-06 20:52:56,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-01-06 20:52:56,368 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:52:56,369 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] [2021-01-06 20:52:56,369 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:52:56,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:52:56,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1096512752, now seen corresponding path program 1 times [2021-01-06 20:52:56,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:52:56,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743332717] [2021-01-06 20:52:56,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:52:56,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:52:56,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:52:56,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743332717] [2021-01-06 20:52:56,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:52:56,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:52:56,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103731024] [2021-01-06 20:52:56,782 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:52:56,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:52:56,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:52:56,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:52:56,800 INFO L87 Difference]: Start difference. First operand 106 states. Second operand 3 states. [2021-01-06 20:52:56,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:52:56,924 INFO L93 Difference]: Finished difference Result 206 states and 333 transitions. [2021-01-06 20:52:56,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:52:56,927 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2021-01-06 20:52:56,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:52:56,953 INFO L225 Difference]: With dead ends: 206 [2021-01-06 20:52:56,953 INFO L226 Difference]: Without dead ends: 154 [2021-01-06 20:52:56,957 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:52:56,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-01-06 20:52:57,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 152. [2021-01-06 20:52:57,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2021-01-06 20:52:57,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 215 transitions. [2021-01-06 20:52:57,036 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 215 transitions. Word has length 47 [2021-01-06 20:52:57,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:52:57,037 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 215 transitions. [2021-01-06 20:52:57,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:52:57,037 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 215 transitions. [2021-01-06 20:52:57,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-01-06 20:52:57,039 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:52:57,040 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] [2021-01-06 20:52:57,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 20:52:57,040 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:52:57,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:52:57,042 INFO L82 PathProgramCache]: Analyzing trace with hash 191283016, now seen corresponding path program 1 times [2021-01-06 20:52:57,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:52:57,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598081688] [2021-01-06 20:52:57,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:52:57,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:52:57,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:52:57,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598081688] [2021-01-06 20:52:57,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:52:57,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:52:57,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345739067] [2021-01-06 20:52:57,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:52:57,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:52:57,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:52:57,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:52:57,183 INFO L87 Difference]: Start difference. First operand 152 states and 215 transitions. Second operand 3 states. [2021-01-06 20:52:57,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:52:57,262 INFO L93 Difference]: Finished difference Result 280 states and 410 transitions. [2021-01-06 20:52:57,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:52:57,263 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2021-01-06 20:52:57,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:52:57,266 INFO L225 Difference]: With dead ends: 280 [2021-01-06 20:52:57,266 INFO L226 Difference]: Without dead ends: 197 [2021-01-06 20:52:57,267 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:52:57,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-01-06 20:52:57,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 195. [2021-01-06 20:52:57,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2021-01-06 20:52:57,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 280 transitions. [2021-01-06 20:52:57,291 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 280 transitions. Word has length 48 [2021-01-06 20:52:57,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:52:57,291 INFO L481 AbstractCegarLoop]: Abstraction has 195 states and 280 transitions. [2021-01-06 20:52:57,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:52:57,291 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 280 transitions. [2021-01-06 20:52:57,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-01-06 20:52:57,293 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:52:57,293 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] [2021-01-06 20:52:57,294 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 20:52:57,294 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:52:57,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:52:57,295 INFO L82 PathProgramCache]: Analyzing trace with hash -1589815569, now seen corresponding path program 1 times [2021-01-06 20:52:57,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:52:57,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298247314] [2021-01-06 20:52:57,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:52:57,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:52:57,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:52:57,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298247314] [2021-01-06 20:52:57,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:52:57,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 20:52:57,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203700380] [2021-01-06 20:52:57,499 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 20:52:57,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:52:57,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 20:52:57,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 20:52:57,505 INFO L87 Difference]: Start difference. First operand 195 states and 280 transitions. Second operand 5 states. [2021-01-06 20:52:57,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:52:57,686 INFO L93 Difference]: Finished difference Result 602 states and 897 transitions. [2021-01-06 20:52:57,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 20:52:57,687 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 49 [2021-01-06 20:52:57,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:52:57,691 INFO L225 Difference]: With dead ends: 602 [2021-01-06 20:52:57,692 INFO L226 Difference]: Without dead ends: 481 [2021-01-06 20:52:57,693 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-01-06 20:52:57,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2021-01-06 20:52:57,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 288. [2021-01-06 20:52:57,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288 states. [2021-01-06 20:52:57,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 423 transitions. [2021-01-06 20:52:57,752 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 423 transitions. Word has length 49 [2021-01-06 20:52:57,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:52:57,752 INFO L481 AbstractCegarLoop]: Abstraction has 288 states and 423 transitions. [2021-01-06 20:52:57,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 20:52:57,753 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 423 transitions. [2021-01-06 20:52:57,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-01-06 20:52:57,757 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:52:57,757 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] [2021-01-06 20:52:57,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 20:52:57,758 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:52:57,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:52:57,760 INFO L82 PathProgramCache]: Analyzing trace with hash 727047131, now seen corresponding path program 1 times [2021-01-06 20:52:57,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:52:57,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037365265] [2021-01-06 20:52:57,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:52:57,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:52:57,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:52:57,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037365265] [2021-01-06 20:52:57,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:52:57,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 20:52:57,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281679408] [2021-01-06 20:52:57,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 20:52:57,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:52:57,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 20:52:57,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 20:52:57,919 INFO L87 Difference]: Start difference. First operand 288 states and 423 transitions. Second operand 5 states. [2021-01-06 20:52:58,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:52:58,160 INFO L93 Difference]: Finished difference Result 791 states and 1183 transitions. [2021-01-06 20:52:58,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 20:52:58,161 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 49 [2021-01-06 20:52:58,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:52:58,165 INFO L225 Difference]: With dead ends: 791 [2021-01-06 20:52:58,165 INFO L226 Difference]: Without dead ends: 525 [2021-01-06 20:52:58,167 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 [2021-01-06 20:52:58,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2021-01-06 20:52:58,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 520. [2021-01-06 20:52:58,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 520 states. [2021-01-06 20:52:58,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 774 transitions. [2021-01-06 20:52:58,212 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 774 transitions. Word has length 49 [2021-01-06 20:52:58,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:52:58,213 INFO L481 AbstractCegarLoop]: Abstraction has 520 states and 774 transitions. [2021-01-06 20:52:58,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 20:52:58,213 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 774 transitions. [2021-01-06 20:52:58,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-01-06 20:52:58,215 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:52:58,215 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] [2021-01-06 20:52:58,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 20:52:58,216 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:52:58,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:52:58,217 INFO L82 PathProgramCache]: Analyzing trace with hash -784609034, now seen corresponding path program 1 times [2021-01-06 20:52:58,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:52:58,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517346156] [2021-01-06 20:52:58,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:52:58,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:52:58,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:52:58,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517346156] [2021-01-06 20:52:58,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:52:58,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 20:52:58,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304264298] [2021-01-06 20:52:58,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 20:52:58,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:52:58,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 20:52:58,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 20:52:58,296 INFO L87 Difference]: Start difference. First operand 520 states and 774 transitions. Second operand 5 states. [2021-01-06 20:52:58,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:52:58,444 INFO L93 Difference]: Finished difference Result 1010 states and 1516 transitions. [2021-01-06 20:52:58,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 20:52:58,445 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2021-01-06 20:52:58,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:52:58,449 INFO L225 Difference]: With dead ends: 1010 [2021-01-06 20:52:58,449 INFO L226 Difference]: Without dead ends: 520 [2021-01-06 20:52:58,450 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 [2021-01-06 20:52:58,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2021-01-06 20:52:58,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 520. [2021-01-06 20:52:58,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 520 states. [2021-01-06 20:52:58,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 763 transitions. [2021-01-06 20:52:58,490 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 763 transitions. Word has length 50 [2021-01-06 20:52:58,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:52:58,490 INFO L481 AbstractCegarLoop]: Abstraction has 520 states and 763 transitions. [2021-01-06 20:52:58,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 20:52:58,490 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 763 transitions. [2021-01-06 20:52:58,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-01-06 20:52:58,492 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:52:58,492 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] [2021-01-06 20:52:58,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-06 20:52:58,492 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:52:58,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:52:58,493 INFO L82 PathProgramCache]: Analyzing trace with hash -535041221, now seen corresponding path program 1 times [2021-01-06 20:52:58,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:52:58,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074847792] [2021-01-06 20:52:58,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:52:58,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:52:58,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:52:58,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074847792] [2021-01-06 20:52:58,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:52:58,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 20:52:58,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685304914] [2021-01-06 20:52:58,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 20:52:58,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:52:58,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 20:52:58,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 20:52:58,576 INFO L87 Difference]: Start difference. First operand 520 states and 763 transitions. Second operand 5 states. [2021-01-06 20:52:58,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:52:58,722 INFO L93 Difference]: Finished difference Result 1014 states and 1499 transitions. [2021-01-06 20:52:58,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 20:52:58,723 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2021-01-06 20:52:58,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:52:58,727 INFO L225 Difference]: With dead ends: 1014 [2021-01-06 20:52:58,727 INFO L226 Difference]: Without dead ends: 520 [2021-01-06 20:52:58,729 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 [2021-01-06 20:52:58,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2021-01-06 20:52:58,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 520. [2021-01-06 20:52:58,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 520 states. [2021-01-06 20:52:58,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 752 transitions. [2021-01-06 20:52:58,784 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 752 transitions. Word has length 51 [2021-01-06 20:52:58,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:52:58,785 INFO L481 AbstractCegarLoop]: Abstraction has 520 states and 752 transitions. [2021-01-06 20:52:58,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 20:52:58,785 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 752 transitions. [2021-01-06 20:52:58,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-01-06 20:52:58,788 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:52:58,788 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] [2021-01-06 20:52:58,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-06 20:52:58,789 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:52:58,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:52:58,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1372292342, now seen corresponding path program 1 times [2021-01-06 20:52:58,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:52:58,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578042461] [2021-01-06 20:52:58,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:52:58,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:52:58,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:52:58,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578042461] [2021-01-06 20:52:58,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:52:58,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 20:52:58,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160473547] [2021-01-06 20:52:58,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 20:52:58,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:52:58,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 20:52:58,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-01-06 20:52:58,913 INFO L87 Difference]: Start difference. First operand 520 states and 752 transitions. Second operand 5 states. [2021-01-06 20:52:59,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:52:59,072 INFO L93 Difference]: Finished difference Result 1289 states and 1885 transitions. [2021-01-06 20:52:59,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 20:52:59,073 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2021-01-06 20:52:59,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:52:59,080 INFO L225 Difference]: With dead ends: 1289 [2021-01-06 20:52:59,080 INFO L226 Difference]: Without dead ends: 1049 [2021-01-06 20:52:59,082 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-01-06 20:52:59,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1049 states. [2021-01-06 20:52:59,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1049 to 782. [2021-01-06 20:52:59,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 782 states. [2021-01-06 20:52:59,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 1137 transitions. [2021-01-06 20:52:59,157 INFO L78 Accepts]: Start accepts. Automaton has 782 states and 1137 transitions. Word has length 52 [2021-01-06 20:52:59,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:52:59,157 INFO L481 AbstractCegarLoop]: Abstraction has 782 states and 1137 transitions. [2021-01-06 20:52:59,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 20:52:59,157 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 1137 transitions. [2021-01-06 20:52:59,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-01-06 20:52:59,173 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:52:59,174 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] [2021-01-06 20:52:59,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-06 20:52:59,174 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:52:59,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:52:59,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1980798090, now seen corresponding path program 1 times [2021-01-06 20:52:59,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:52:59,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907970846] [2021-01-06 20:52:59,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:52:59,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:52:59,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:52:59,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907970846] [2021-01-06 20:52:59,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:52:59,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 20:52:59,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731235397] [2021-01-06 20:52:59,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 20:52:59,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:52:59,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 20:52:59,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 20:52:59,315 INFO L87 Difference]: Start difference. First operand 782 states and 1137 transitions. Second operand 5 states. [2021-01-06 20:52:59,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:52:59,500 INFO L93 Difference]: Finished difference Result 1499 states and 2197 transitions. [2021-01-06 20:52:59,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 20:52:59,500 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2021-01-06 20:52:59,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:52:59,508 INFO L225 Difference]: With dead ends: 1499 [2021-01-06 20:52:59,508 INFO L226 Difference]: Without dead ends: 1259 [2021-01-06 20:52:59,509 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-01-06 20:52:59,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1259 states. [2021-01-06 20:52:59,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1259 to 957. [2021-01-06 20:52:59,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 957 states. [2021-01-06 20:52:59,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 1398 transitions. [2021-01-06 20:52:59,599 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 1398 transitions. Word has length 52 [2021-01-06 20:52:59,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:52:59,599 INFO L481 AbstractCegarLoop]: Abstraction has 957 states and 1398 transitions. [2021-01-06 20:52:59,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 20:52:59,600 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 1398 transitions. [2021-01-06 20:52:59,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-01-06 20:52:59,600 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:52:59,601 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] [2021-01-06 20:52:59,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-06 20:52:59,601 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:52:59,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:52:59,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1423750650, now seen corresponding path program 1 times [2021-01-06 20:52:59,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:52:59,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596212096] [2021-01-06 20:52:59,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:52:59,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:52:59,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:52:59,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596212096] [2021-01-06 20:52:59,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:52:59,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-06 20:52:59,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402492808] [2021-01-06 20:52:59,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 20:52:59,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:52:59,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 20:52:59,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-01-06 20:52:59,887 INFO L87 Difference]: Start difference. First operand 957 states and 1398 transitions. Second operand 9 states. [2021-01-06 20:53:00,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:53:00,602 INFO L93 Difference]: Finished difference Result 2666 states and 3929 transitions. [2021-01-06 20:53:00,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 20:53:00,603 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 53 [2021-01-06 20:53:00,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:53:00,612 INFO L225 Difference]: With dead ends: 2666 [2021-01-06 20:53:00,613 INFO L226 Difference]: Without dead ends: 1810 [2021-01-06 20:53:00,615 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2021-01-06 20:53:00,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1810 states. [2021-01-06 20:53:00,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1810 to 957. [2021-01-06 20:53:00,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 957 states. [2021-01-06 20:53:00,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 1397 transitions. [2021-01-06 20:53:00,746 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 1397 transitions. Word has length 53 [2021-01-06 20:53:00,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:53:00,746 INFO L481 AbstractCegarLoop]: Abstraction has 957 states and 1397 transitions. [2021-01-06 20:53:00,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 20:53:00,747 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 1397 transitions. [2021-01-06 20:53:00,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-01-06 20:53:00,747 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:53:00,748 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] [2021-01-06 20:53:00,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-01-06 20:53:00,748 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:53:00,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:53:00,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1451758686, now seen corresponding path program 1 times [2021-01-06 20:53:00,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:53:00,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709527792] [2021-01-06 20:53:00,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:53:00,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:53:00,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:53:00,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709527792] [2021-01-06 20:53:00,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:53:00,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-01-06 20:53:00,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799335703] [2021-01-06 20:53:00,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 20:53:00,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:53:00,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 20:53:00,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-01-06 20:53:00,970 INFO L87 Difference]: Start difference. First operand 957 states and 1397 transitions. Second operand 10 states. [2021-01-06 20:53:02,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:53:02,079 INFO L93 Difference]: Finished difference Result 2490 states and 3650 transitions. [2021-01-06 20:53:02,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-01-06 20:53:02,080 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 53 [2021-01-06 20:53:02,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:53:02,088 INFO L225 Difference]: With dead ends: 2490 [2021-01-06 20:53:02,088 INFO L226 Difference]: Without dead ends: 1622 [2021-01-06 20:53:02,091 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=142, Invalid=410, Unknown=0, NotChecked=0, Total=552 [2021-01-06 20:53:02,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1622 states. [2021-01-06 20:53:02,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1622 to 957. [2021-01-06 20:53:02,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 957 states. [2021-01-06 20:53:02,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 1394 transitions. [2021-01-06 20:53:02,244 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 1394 transitions. Word has length 53 [2021-01-06 20:53:02,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:53:02,244 INFO L481 AbstractCegarLoop]: Abstraction has 957 states and 1394 transitions. [2021-01-06 20:53:02,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 20:53:02,245 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 1394 transitions. [2021-01-06 20:53:02,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-01-06 20:53:02,245 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:53:02,246 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] [2021-01-06 20:53:02,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-01-06 20:53:02,246 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:53:02,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:53:02,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1755644783, now seen corresponding path program 1 times [2021-01-06 20:53:02,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:53:02,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774862506] [2021-01-06 20:53:02,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:53:02,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:53:02,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:53:02,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774862506] [2021-01-06 20:53:02,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:53:02,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-01-06 20:53:02,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736650964] [2021-01-06 20:53:02,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 20:53:02,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:53:02,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 20:53:02,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-01-06 20:53:02,484 INFO L87 Difference]: Start difference. First operand 957 states and 1394 transitions. Second operand 10 states. [2021-01-06 20:53:03,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:53:03,473 INFO L93 Difference]: Finished difference Result 2718 states and 3978 transitions. [2021-01-06 20:53:03,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-06 20:53:03,474 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 54 [2021-01-06 20:53:03,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:53:03,484 INFO L225 Difference]: With dead ends: 2718 [2021-01-06 20:53:03,484 INFO L226 Difference]: Without dead ends: 1865 [2021-01-06 20:53:03,487 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2021-01-06 20:53:03,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1865 states. [2021-01-06 20:53:03,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1865 to 957. [2021-01-06 20:53:03,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 957 states. [2021-01-06 20:53:03,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 1388 transitions. [2021-01-06 20:53:03,668 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 1388 transitions. Word has length 54 [2021-01-06 20:53:03,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:53:03,669 INFO L481 AbstractCegarLoop]: Abstraction has 957 states and 1388 transitions. [2021-01-06 20:53:03,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 20:53:03,669 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 1388 transitions. [2021-01-06 20:53:03,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-01-06 20:53:03,669 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:53:03,670 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] [2021-01-06 20:53:03,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-01-06 20:53:03,670 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:53:03,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:53:03,671 INFO L82 PathProgramCache]: Analyzing trace with hash -1521991144, now seen corresponding path program 1 times [2021-01-06 20:53:03,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:53:03,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993791976] [2021-01-06 20:53:03,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:53:03,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:53:04,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:53:04,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993791976] [2021-01-06 20:53:04,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:53:04,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-01-06 20:53:04,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686461017] [2021-01-06 20:53:04,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-01-06 20:53:04,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:53:04,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-01-06 20:53:04,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2021-01-06 20:53:04,305 INFO L87 Difference]: Start difference. First operand 957 states and 1388 transitions. Second operand 21 states. [2021-01-06 20:53:08,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:53:08,117 INFO L93 Difference]: Finished difference Result 4718 states and 6961 transitions. [2021-01-06 20:53:08,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-01-06 20:53:08,120 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 55 [2021-01-06 20:53:08,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:53:08,148 INFO L225 Difference]: With dead ends: 4718 [2021-01-06 20:53:08,149 INFO L226 Difference]: Without dead ends: 4299 [2021-01-06 20:53:08,152 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=331, Invalid=1475, Unknown=0, NotChecked=0, Total=1806 [2021-01-06 20:53:08,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4299 states. [2021-01-06 20:53:08,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4299 to 957. [2021-01-06 20:53:08,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 957 states. [2021-01-06 20:53:08,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 1386 transitions. [2021-01-06 20:53:08,372 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 1386 transitions. Word has length 55 [2021-01-06 20:53:08,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:53:08,372 INFO L481 AbstractCegarLoop]: Abstraction has 957 states and 1386 transitions. [2021-01-06 20:53:08,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2021-01-06 20:53:08,373 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 1386 transitions. [2021-01-06 20:53:08,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-01-06 20:53:08,373 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:53:08,373 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] [2021-01-06 20:53:08,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-01-06 20:53:08,374 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:53:08,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:53:08,375 INFO L82 PathProgramCache]: Analyzing trace with hash 822613335, now seen corresponding path program 1 times [2021-01-06 20:53:08,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:53:08,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396658894] [2021-01-06 20:53:08,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:53:08,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:53:09,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:53:09,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396658894] [2021-01-06 20:53:09,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:53:09,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-01-06 20:53:09,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976536017] [2021-01-06 20:53:09,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-01-06 20:53:09,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:53:09,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-01-06 20:53:09,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=376, Unknown=0, NotChecked=0, Total=420 [2021-01-06 20:53:09,156 INFO L87 Difference]: Start difference. First operand 957 states and 1386 transitions. Second operand 21 states. [2021-01-06 20:53:09,365 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2021-01-06 20:53:10,062 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2021-01-06 20:53:10,266 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2021-01-06 20:53:10,505 WARN L197 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 69 [2021-01-06 20:53:10,808 WARN L197 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 83 [2021-01-06 20:53:10,970 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2021-01-06 20:53:11,131 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2021-01-06 20:53:13,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:53:13,868 INFO L93 Difference]: Finished difference Result 4508 states and 6647 transitions. [2021-01-06 20:53:13,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-01-06 20:53:13,869 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 55 [2021-01-06 20:53:13,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:53:13,890 INFO L225 Difference]: With dead ends: 4508 [2021-01-06 20:53:13,890 INFO L226 Difference]: Without dead ends: 4095 [2021-01-06 20:53:13,893 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=272, Invalid=1288, Unknown=0, NotChecked=0, Total=1560 [2021-01-06 20:53:13,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4095 states. [2021-01-06 20:53:14,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4095 to 962. [2021-01-06 20:53:14,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 962 states. [2021-01-06 20:53:14,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 962 states to 962 states and 1392 transitions. [2021-01-06 20:53:14,106 INFO L78 Accepts]: Start accepts. Automaton has 962 states and 1392 transitions. Word has length 55 [2021-01-06 20:53:14,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:53:14,107 INFO L481 AbstractCegarLoop]: Abstraction has 962 states and 1392 transitions. [2021-01-06 20:53:14,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2021-01-06 20:53:14,107 INFO L276 IsEmpty]: Start isEmpty. Operand 962 states and 1392 transitions. [2021-01-06 20:53:14,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-01-06 20:53:14,108 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:53:14,108 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] [2021-01-06 20:53:14,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-01-06 20:53:14,108 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:53:14,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:53:14,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1171871732, now seen corresponding path program 1 times [2021-01-06 20:53:14,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:53:14,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924747036] [2021-01-06 20:53:14,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:53:14,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:53:14,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:53:14,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924747036] [2021-01-06 20:53:14,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:53:14,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-01-06 20:53:14,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254398791] [2021-01-06 20:53:14,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-06 20:53:14,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:53:14,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-06 20:53:14,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=416, Unknown=0, NotChecked=0, Total=462 [2021-01-06 20:53:14,994 INFO L87 Difference]: Start difference. First operand 962 states and 1392 transitions. Second operand 22 states. [2021-01-06 20:53:15,294 WARN L197 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2021-01-06 20:53:16,113 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2021-01-06 20:53:16,349 WARN L197 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2021-01-06 20:53:16,622 WARN L197 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 77 [2021-01-06 20:53:16,991 WARN L197 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 86 [2021-01-06 20:53:17,171 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2021-01-06 20:53:17,360 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2021-01-06 20:53:17,625 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2021-01-06 20:53:17,821 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2021-01-06 20:53:18,093 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2021-01-06 20:53:18,343 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2021-01-06 20:53:18,529 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2021-01-06 20:53:20,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:53:20,603 INFO L93 Difference]: Finished difference Result 3530 states and 5183 transitions. [2021-01-06 20:53:20,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-01-06 20:53:20,603 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 55 [2021-01-06 20:53:20,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:53:20,618 INFO L225 Difference]: With dead ends: 3530 [2021-01-06 20:53:20,618 INFO L226 Difference]: Without dead ends: 3281 [2021-01-06 20:53:20,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=411, Invalid=1659, Unknown=0, NotChecked=0, Total=2070 [2021-01-06 20:53:20,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3281 states. [2021-01-06 20:53:20,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3281 to 962. [2021-01-06 20:53:20,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 962 states. [2021-01-06 20:53:20,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 962 states to 962 states and 1391 transitions. [2021-01-06 20:53:20,873 INFO L78 Accepts]: Start accepts. Automaton has 962 states and 1391 transitions. Word has length 55 [2021-01-06 20:53:20,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:53:20,874 INFO L481 AbstractCegarLoop]: Abstraction has 962 states and 1391 transitions. [2021-01-06 20:53:20,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-01-06 20:53:20,874 INFO L276 IsEmpty]: Start isEmpty. Operand 962 states and 1391 transitions. [2021-01-06 20:53:20,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-01-06 20:53:20,875 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:53:20,875 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] [2021-01-06 20:53:20,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-01-06 20:53:20,875 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:53:20,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:53:20,876 INFO L82 PathProgramCache]: Analyzing trace with hash 380290649, now seen corresponding path program 1 times [2021-01-06 20:53:20,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:53:20,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341811147] [2021-01-06 20:53:20,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:53:20,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:53:21,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:53:21,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341811147] [2021-01-06 20:53:21,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:53:21,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-01-06 20:53:21,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104848396] [2021-01-06 20:53:21,630 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-01-06 20:53:21,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:53:21,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-01-06 20:53:21,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2021-01-06 20:53:21,631 INFO L87 Difference]: Start difference. First operand 962 states and 1391 transitions. Second operand 21 states. [2021-01-06 20:53:21,835 WARN L197 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2021-01-06 20:53:22,583 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2021-01-06 20:53:22,778 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2021-01-06 20:53:23,034 WARN L197 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2021-01-06 20:53:23,185 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2021-01-06 20:53:23,339 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2021-01-06 20:53:23,724 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2021-01-06 20:53:25,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:53:25,894 INFO L93 Difference]: Finished difference Result 3469 states and 5095 transitions. [2021-01-06 20:53:25,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-01-06 20:53:25,895 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 55 [2021-01-06 20:53:25,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:53:25,909 INFO L225 Difference]: With dead ends: 3469 [2021-01-06 20:53:25,909 INFO L226 Difference]: Without dead ends: 3050 [2021-01-06 20:53:25,912 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=294, Invalid=1188, Unknown=0, NotChecked=0, Total=1482 [2021-01-06 20:53:25,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3050 states. [2021-01-06 20:53:26,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3050 to 967. [2021-01-06 20:53:26,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 967 states. [2021-01-06 20:53:26,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1396 transitions. [2021-01-06 20:53:26,152 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1396 transitions. Word has length 55 [2021-01-06 20:53:26,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:53:26,152 INFO L481 AbstractCegarLoop]: Abstraction has 967 states and 1396 transitions. [2021-01-06 20:53:26,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2021-01-06 20:53:26,153 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1396 transitions. [2021-01-06 20:53:26,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-01-06 20:53:26,156 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:53:26,157 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] [2021-01-06 20:53:26,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-01-06 20:53:26,157 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:53:26,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:53:26,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1519790906, now seen corresponding path program 1 times [2021-01-06 20:53:26,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:53:26,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926582753] [2021-01-06 20:53:26,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:53:26,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:53:26,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:53:26,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926582753] [2021-01-06 20:53:26,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:53:26,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-01-06 20:53:26,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830453029] [2021-01-06 20:53:26,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-06 20:53:26,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:53:26,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-06 20:53:26,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-01-06 20:53:26,760 INFO L87 Difference]: Start difference. First operand 967 states and 1396 transitions. Second operand 14 states. [2021-01-06 20:53:27,323 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 31 [2021-01-06 20:53:27,689 WARN L197 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2021-01-06 20:53:28,092 WARN L197 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2021-01-06 20:53:28,461 WARN L197 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2021-01-06 20:53:29,005 WARN L197 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2021-01-06 20:53:29,452 WARN L197 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 53 [2021-01-06 20:53:29,649 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2021-01-06 20:53:30,276 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2021-01-06 20:53:30,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:53:30,882 INFO L93 Difference]: Finished difference Result 2841 states and 4166 transitions. [2021-01-06 20:53:30,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-01-06 20:53:30,883 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 56 [2021-01-06 20:53:30,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:53:30,890 INFO L225 Difference]: With dead ends: 2841 [2021-01-06 20:53:30,895 INFO L226 Difference]: Without dead ends: 2395 [2021-01-06 20:53:30,899 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=189, Invalid=623, Unknown=0, NotChecked=0, Total=812 [2021-01-06 20:53:30,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2395 states. [2021-01-06 20:53:31,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2395 to 934. [2021-01-06 20:53:31,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 934 states. [2021-01-06 20:53:31,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 934 states to 934 states and 1353 transitions. [2021-01-06 20:53:31,154 INFO L78 Accepts]: Start accepts. Automaton has 934 states and 1353 transitions. Word has length 56 [2021-01-06 20:53:31,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:53:31,154 INFO L481 AbstractCegarLoop]: Abstraction has 934 states and 1353 transitions. [2021-01-06 20:53:31,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-01-06 20:53:31,154 INFO L276 IsEmpty]: Start isEmpty. Operand 934 states and 1353 transitions. [2021-01-06 20:53:31,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-01-06 20:53:31,155 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:53:31,155 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] [2021-01-06 20:53:31,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-01-06 20:53:31,155 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:53:31,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:53:31,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1258334466, now seen corresponding path program 1 times [2021-01-06 20:53:31,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:53:31,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301780328] [2021-01-06 20:53:31,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:53:31,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:53:31,613 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2021-01-06 20:53:32,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:53:32,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301780328] [2021-01-06 20:53:32,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:53:32,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-01-06 20:53:32,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544756455] [2021-01-06 20:53:32,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-06 20:53:32,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:53:32,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-06 20:53:32,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2021-01-06 20:53:32,026 INFO L87 Difference]: Start difference. First operand 934 states and 1353 transitions. Second operand 17 states. [2021-01-06 20:53:32,582 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 27 [2021-01-06 20:53:32,857 WARN L197 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2021-01-06 20:53:33,173 WARN L197 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-01-06 20:53:33,537 WARN L197 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 67 [2021-01-06 20:53:33,862 WARN L197 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-01-06 20:53:34,190 WARN L197 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-01-06 20:53:34,556 WARN L197 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2021-01-06 20:53:34,912 WARN L197 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2021-01-06 20:53:35,181 WARN L197 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2021-01-06 20:53:35,350 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2021-01-06 20:53:35,884 WARN L197 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-01-06 20:53:36,449 WARN L197 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2021-01-06 20:53:39,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:53:39,652 INFO L93 Difference]: Finished difference Result 8726 states and 12966 transitions. [2021-01-06 20:53:39,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-01-06 20:53:39,653 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 56 [2021-01-06 20:53:39,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:53:39,672 INFO L225 Difference]: With dead ends: 8726 [2021-01-06 20:53:39,672 INFO L226 Difference]: Without dead ends: 8307 [2021-01-06 20:53:39,676 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=291, Invalid=1115, Unknown=0, NotChecked=0, Total=1406 [2021-01-06 20:53:39,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8307 states. [2021-01-06 20:53:40,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8307 to 916. [2021-01-06 20:53:40,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 916 states. [2021-01-06 20:53:40,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1329 transitions. [2021-01-06 20:53:40,005 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1329 transitions. Word has length 56 [2021-01-06 20:53:40,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:53:40,006 INFO L481 AbstractCegarLoop]: Abstraction has 916 states and 1329 transitions. [2021-01-06 20:53:40,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-01-06 20:53:40,006 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1329 transitions. [2021-01-06 20:53:40,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-01-06 20:53:40,007 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:53:40,007 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] [2021-01-06 20:53:40,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-01-06 20:53:40,007 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:53:40,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:53:40,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1802177434, now seen corresponding path program 1 times [2021-01-06 20:53:40,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:53:40,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640549573] [2021-01-06 20:53:40,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:53:40,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:53:40,488 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 29 [2021-01-06 20:53:41,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:53:41,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640549573] [2021-01-06 20:53:41,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:53:41,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-01-06 20:53:41,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239885855] [2021-01-06 20:53:41,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-01-06 20:53:41,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:53:41,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-01-06 20:53:41,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2021-01-06 20:53:41,151 INFO L87 Difference]: Start difference. First operand 916 states and 1329 transitions. Second operand 20 states. [2021-01-06 20:53:41,344 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2021-01-06 20:53:41,890 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 35 [2021-01-06 20:53:42,136 WARN L197 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2021-01-06 20:53:42,366 WARN L197 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2021-01-06 20:53:42,642 WARN L197 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2021-01-06 20:53:43,059 WARN L197 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 78 [2021-01-06 20:53:43,338 WARN L197 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2021-01-06 20:53:43,609 WARN L197 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2021-01-06 20:53:43,988 WARN L197 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2021-01-06 20:53:44,275 WARN L197 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2021-01-06 20:53:44,618 WARN L197 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2021-01-06 20:53:44,909 WARN L197 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2021-01-06 20:53:45,091 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2021-01-06 20:53:45,289 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2021-01-06 20:53:45,538 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2021-01-06 20:53:46,796 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2021-01-06 20:53:48,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:53:48,969 INFO L93 Difference]: Finished difference Result 4194 states and 6191 transitions. [2021-01-06 20:53:48,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-01-06 20:53:48,970 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 56 [2021-01-06 20:53:48,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:53:48,981 INFO L225 Difference]: With dead ends: 4194 [2021-01-06 20:53:48,981 INFO L226 Difference]: Without dead ends: 3781 [2021-01-06 20:53:48,986 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=405, Invalid=1575, Unknown=0, NotChecked=0, Total=1980 [2021-01-06 20:53:48,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3781 states. [2021-01-06 20:53:49,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3781 to 912. [2021-01-06 20:53:49,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 912 states. [2021-01-06 20:53:49,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 1324 transitions. [2021-01-06 20:53:49,310 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 1324 transitions. Word has length 56 [2021-01-06 20:53:49,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:53:49,310 INFO L481 AbstractCegarLoop]: Abstraction has 912 states and 1324 transitions. [2021-01-06 20:53:49,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2021-01-06 20:53:49,311 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 1324 transitions. [2021-01-06 20:53:49,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-01-06 20:53:49,311 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:53:49,311 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] [2021-01-06 20:53:49,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-01-06 20:53:49,312 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:53:49,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:53:49,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1616369829, now seen corresponding path program 1 times [2021-01-06 20:53:49,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:53:49,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971190988] [2021-01-06 20:53:49,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:53:49,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:53:49,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:53:49,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971190988] [2021-01-06 20:53:49,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:53:49,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-01-06 20:53:49,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421656197] [2021-01-06 20:53:49,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-06 20:53:49,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:53:49,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-06 20:53:49,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-01-06 20:53:49,759 INFO L87 Difference]: Start difference. First operand 912 states and 1324 transitions. Second operand 12 states. [2021-01-06 20:53:50,300 WARN L197 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 40 [2021-01-06 20:53:50,520 WARN L197 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 49 [2021-01-06 20:53:50,748 WARN L197 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 49 [2021-01-06 20:53:50,956 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2021-01-06 20:53:51,147 WARN L197 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 43 [2021-01-06 20:53:51,341 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2021-01-06 20:53:51,516 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 36 [2021-01-06 20:53:51,829 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 35 [2021-01-06 20:53:52,082 WARN L197 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 40 [2021-01-06 20:53:53,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:53:53,830 INFO L93 Difference]: Finished difference Result 4589 states and 6821 transitions. [2021-01-06 20:53:53,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-01-06 20:53:53,831 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 56 [2021-01-06 20:53:53,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:53:53,839 INFO L225 Difference]: With dead ends: 4589 [2021-01-06 20:53:53,839 INFO L226 Difference]: Without dead ends: 4166 [2021-01-06 20:53:53,841 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=185, Invalid=465, Unknown=0, NotChecked=0, Total=650 [2021-01-06 20:53:53,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4166 states. [2021-01-06 20:53:54,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4166 to 896. [2021-01-06 20:53:54,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 896 states. [2021-01-06 20:53:54,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 1305 transitions. [2021-01-06 20:53:54,256 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 1305 transitions. Word has length 56 [2021-01-06 20:53:54,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:53:54,256 INFO L481 AbstractCegarLoop]: Abstraction has 896 states and 1305 transitions. [2021-01-06 20:53:54,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-06 20:53:54,257 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 1305 transitions. [2021-01-06 20:53:54,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-01-06 20:53:54,257 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:53:54,257 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] [2021-01-06 20:53:54,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-01-06 20:53:54,258 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:53:54,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:53:54,258 INFO L82 PathProgramCache]: Analyzing trace with hash -1179705887, now seen corresponding path program 1 times [2021-01-06 20:53:54,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:53:54,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133205443] [2021-01-06 20:53:54,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:53:54,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:53:55,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:53:55,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133205443] [2021-01-06 20:53:55,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:53:55,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-01-06 20:53:55,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235089182] [2021-01-06 20:53:55,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-06 20:53:55,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:53:55,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-06 20:53:55,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2021-01-06 20:53:55,011 INFO L87 Difference]: Start difference. First operand 896 states and 1305 transitions. Second operand 15 states. [2021-01-06 20:53:55,576 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2021-01-06 20:53:55,833 WARN L197 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2021-01-06 20:53:55,994 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 35 [2021-01-06 20:53:56,153 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 35 [2021-01-06 20:53:58,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:53:58,524 INFO L93 Difference]: Finished difference Result 4409 states and 6527 transitions. [2021-01-06 20:53:58,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-01-06 20:53:58,525 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2021-01-06 20:53:58,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:53:58,533 INFO L225 Difference]: With dead ends: 4409 [2021-01-06 20:53:58,534 INFO L226 Difference]: Without dead ends: 3996 [2021-01-06 20:53:58,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=129, Invalid=471, Unknown=0, NotChecked=0, Total=600 [2021-01-06 20:53:58,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3996 states. [2021-01-06 20:53:59,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3996 to 901. [2021-01-06 20:53:59,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 901 states. [2021-01-06 20:53:59,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1311 transitions. [2021-01-06 20:53:59,087 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1311 transitions. Word has length 56 [2021-01-06 20:53:59,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:53:59,088 INFO L481 AbstractCegarLoop]: Abstraction has 901 states and 1311 transitions. [2021-01-06 20:53:59,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-01-06 20:53:59,088 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1311 transitions. [2021-01-06 20:53:59,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-01-06 20:53:59,089 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:53:59,089 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] [2021-01-06 20:53:59,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-01-06 20:53:59,089 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:53:59,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:53:59,090 INFO L82 PathProgramCache]: Analyzing trace with hash -684019272, now seen corresponding path program 1 times [2021-01-06 20:53:59,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:53:59,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047062308] [2021-01-06 20:53:59,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:53:59,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:53:59,682 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2021-01-06 20:54:00,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:54:00,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047062308] [2021-01-06 20:54:00,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:54:00,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-01-06 20:54:00,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649354211] [2021-01-06 20:54:00,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-01-06 20:54:00,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:54:00,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-01-06 20:54:00,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-01-06 20:54:00,072 INFO L87 Difference]: Start difference. First operand 901 states and 1311 transitions. Second operand 18 states. [2021-01-06 20:54:00,824 WARN L197 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2021-01-06 20:54:01,106 WARN L197 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2021-01-06 20:54:03,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:54:03,726 INFO L93 Difference]: Finished difference Result 3776 states and 5596 transitions. [2021-01-06 20:54:03,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-01-06 20:54:03,727 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 57 [2021-01-06 20:54:03,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:54:03,732 INFO L225 Difference]: With dead ends: 3776 [2021-01-06 20:54:03,732 INFO L226 Difference]: Without dead ends: 3363 [2021-01-06 20:54:03,734 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2021-01-06 20:54:03,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3363 states. [2021-01-06 20:54:04,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3363 to 887. [2021-01-06 20:54:04,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 887 states. [2021-01-06 20:54:04,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 887 states to 887 states and 1295 transitions. [2021-01-06 20:54:04,141 INFO L78 Accepts]: Start accepts. Automaton has 887 states and 1295 transitions. Word has length 57 [2021-01-06 20:54:04,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:54:04,141 INFO L481 AbstractCegarLoop]: Abstraction has 887 states and 1295 transitions. [2021-01-06 20:54:04,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-01-06 20:54:04,142 INFO L276 IsEmpty]: Start isEmpty. Operand 887 states and 1295 transitions. [2021-01-06 20:54:04,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-01-06 20:54:04,143 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:54:04,143 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, 1, 1, 1, 1, 1] [2021-01-06 20:54:04,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-01-06 20:54:04,143 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:54:04,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:54:04,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1531780676, now seen corresponding path program 1 times [2021-01-06 20:54:04,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:54:04,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753769041] [2021-01-06 20:54:04,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:54:04,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:54:04,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:54:04,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753769041] [2021-01-06 20:54:04,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:54:04,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:54:04,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486820226] [2021-01-06 20:54:04,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:54:04,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:54:04,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:54:04,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:54:04,194 INFO L87 Difference]: Start difference. First operand 887 states and 1295 transitions. Second operand 3 states. [2021-01-06 20:54:04,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:54:04,821 INFO L93 Difference]: Finished difference Result 2391 states and 3521 transitions. [2021-01-06 20:54:04,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:54:04,825 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2021-01-06 20:54:04,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:54:04,828 INFO L225 Difference]: With dead ends: 2391 [2021-01-06 20:54:04,828 INFO L226 Difference]: Without dead ends: 1577 [2021-01-06 20:54:04,829 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:54:04,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1577 states. [2021-01-06 20:54:05,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1577 to 1555. [2021-01-06 20:54:05,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1555 states. [2021-01-06 20:54:05,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 2235 transitions. [2021-01-06 20:54:05,517 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 2235 transitions. Word has length 75 [2021-01-06 20:54:05,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:54:05,517 INFO L481 AbstractCegarLoop]: Abstraction has 1555 states and 2235 transitions. [2021-01-06 20:54:05,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:54:05,518 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 2235 transitions. [2021-01-06 20:54:05,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-01-06 20:54:05,519 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:54:05,519 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, 1, 1, 1, 1, 1, 1] [2021-01-06 20:54:05,519 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-01-06 20:54:05,519 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:54:05,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:54:05,520 INFO L82 PathProgramCache]: Analyzing trace with hash 241252331, now seen corresponding path program 1 times [2021-01-06 20:54:05,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:54:05,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756160868] [2021-01-06 20:54:05,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:54:05,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:54:05,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:54:05,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756160868] [2021-01-06 20:54:05,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:54:05,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:54:05,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770554312] [2021-01-06 20:54:05,585 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:54:05,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:54:05,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:54:05,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:54:05,586 INFO L87 Difference]: Start difference. First operand 1555 states and 2235 transitions. Second operand 3 states. [2021-01-06 20:54:07,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:54:07,073 INFO L93 Difference]: Finished difference Result 4359 states and 6269 transitions. [2021-01-06 20:54:07,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:54:07,074 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2021-01-06 20:54:07,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:54:07,076 INFO L225 Difference]: With dead ends: 4359 [2021-01-06 20:54:07,076 INFO L226 Difference]: Without dead ends: 2877 [2021-01-06 20:54:07,078 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:54:07,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2877 states. [2021-01-06 20:54:08,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2877 to 2715. [2021-01-06 20:54:08,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2715 states. [2021-01-06 20:54:08,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2715 states to 2715 states and 3871 transitions. [2021-01-06 20:54:08,331 INFO L78 Accepts]: Start accepts. Automaton has 2715 states and 3871 transitions. Word has length 76 [2021-01-06 20:54:08,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:54:08,331 INFO L481 AbstractCegarLoop]: Abstraction has 2715 states and 3871 transitions. [2021-01-06 20:54:08,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:54:08,331 INFO L276 IsEmpty]: Start isEmpty. Operand 2715 states and 3871 transitions. [2021-01-06 20:54:08,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-01-06 20:54:08,332 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:54:08,332 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, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:54:08,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-01-06 20:54:08,333 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:54:08,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:54:08,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1306565925, now seen corresponding path program 1 times [2021-01-06 20:54:08,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:54:08,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408046679] [2021-01-06 20:54:08,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:54:08,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:54:08,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:54:08,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408046679] [2021-01-06 20:54:08,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:54:08,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:54:08,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689032088] [2021-01-06 20:54:08,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:54:08,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:54:08,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:54:08,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:54:08,387 INFO L87 Difference]: Start difference. First operand 2715 states and 3871 transitions. Second operand 3 states. [2021-01-06 20:54:10,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:54:10,697 INFO L93 Difference]: Finished difference Result 7679 states and 10897 transitions. [2021-01-06 20:54:10,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:54:10,698 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2021-01-06 20:54:10,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:54:10,703 INFO L225 Difference]: With dead ends: 7679 [2021-01-06 20:54:10,703 INFO L226 Difference]: Without dead ends: 5037 [2021-01-06 20:54:10,706 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:54:10,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5037 states. [2021-01-06 20:54:13,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5037 to 4715. [2021-01-06 20:54:13,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4715 states. [2021-01-06 20:54:13,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4715 states to 4715 states and 6623 transitions. [2021-01-06 20:54:13,030 INFO L78 Accepts]: Start accepts. Automaton has 4715 states and 6623 transitions. Word has length 77 [2021-01-06 20:54:13,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:54:13,031 INFO L481 AbstractCegarLoop]: Abstraction has 4715 states and 6623 transitions. [2021-01-06 20:54:13,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:54:13,031 INFO L276 IsEmpty]: Start isEmpty. Operand 4715 states and 6623 transitions. [2021-01-06 20:54:13,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-01-06 20:54:13,034 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:54:13,034 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:54:13,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-01-06 20:54:13,034 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:54:13,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:54:13,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1695604898, now seen corresponding path program 1 times [2021-01-06 20:54:13,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:54:13,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54172418] [2021-01-06 20:54:13,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:54:13,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:54:13,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:54:13,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54172418] [2021-01-06 20:54:13,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:54:13,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 20:54:13,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52751324] [2021-01-06 20:54:13,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 20:54:13,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:54:13,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 20:54:13,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-06 20:54:13,181 INFO L87 Difference]: Start difference. First operand 4715 states and 6623 transitions. Second operand 6 states. [2021-01-06 20:54:16,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:54:16,793 INFO L93 Difference]: Finished difference Result 8285 states and 11491 transitions. [2021-01-06 20:54:16,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 20:54:16,794 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2021-01-06 20:54:16,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:54:16,802 INFO L225 Difference]: With dead ends: 8285 [2021-01-06 20:54:16,802 INFO L226 Difference]: Without dead ends: 8283 [2021-01-06 20:54:16,803 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-01-06 20:54:16,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8283 states. [2021-01-06 20:54:19,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8283 to 4907. [2021-01-06 20:54:19,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4907 states. [2021-01-06 20:54:19,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4907 states to 4907 states and 6775 transitions. [2021-01-06 20:54:19,019 INFO L78 Accepts]: Start accepts. Automaton has 4907 states and 6775 transitions. Word has length 78 [2021-01-06 20:54:19,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:54:19,019 INFO L481 AbstractCegarLoop]: Abstraction has 4907 states and 6775 transitions. [2021-01-06 20:54:19,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 20:54:19,020 INFO L276 IsEmpty]: Start isEmpty. Operand 4907 states and 6775 transitions. [2021-01-06 20:54:19,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-01-06 20:54:19,021 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:54:19,021 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:54:19,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-01-06 20:54:19,021 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:54:19,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:54:19,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1415916470, now seen corresponding path program 1 times [2021-01-06 20:54:19,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:54:19,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309642164] [2021-01-06 20:54:19,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:54:19,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:54:19,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:54:19,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309642164] [2021-01-06 20:54:19,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:54:19,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:54:19,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288911645] [2021-01-06 20:54:19,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:54:19,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:54:19,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:54:19,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:54:19,069 INFO L87 Difference]: Start difference. First operand 4907 states and 6775 transitions. Second operand 3 states. [2021-01-06 20:54:22,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:54:22,522 INFO L93 Difference]: Finished difference Result 12751 states and 17589 transitions. [2021-01-06 20:54:22,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:54:22,523 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2021-01-06 20:54:22,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:54:22,531 INFO L225 Difference]: With dead ends: 12751 [2021-01-06 20:54:22,532 INFO L226 Difference]: Without dead ends: 7917 [2021-01-06 20:54:22,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:54:22,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7917 states. [2021-01-06 20:54:25,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7917 to 7307. [2021-01-06 20:54:25,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7307 states. [2021-01-06 20:54:25,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7307 states to 7307 states and 9903 transitions. [2021-01-06 20:54:25,794 INFO L78 Accepts]: Start accepts. Automaton has 7307 states and 9903 transitions. Word has length 79 [2021-01-06 20:54:25,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:54:25,795 INFO L481 AbstractCegarLoop]: Abstraction has 7307 states and 9903 transitions. [2021-01-06 20:54:25,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:54:25,795 INFO L276 IsEmpty]: Start isEmpty. Operand 7307 states and 9903 transitions. [2021-01-06 20:54:25,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-01-06 20:54:25,798 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:54:25,798 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:54:25,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-01-06 20:54:25,799 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:54:25,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:54:25,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1940322908, now seen corresponding path program 1 times [2021-01-06 20:54:25,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:54:25,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201952306] [2021-01-06 20:54:25,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:54:25,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:54:25,860 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:54:25,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201952306] [2021-01-06 20:54:25,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:54:25,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:54:25,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755784021] [2021-01-06 20:54:25,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:54:25,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:54:25,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:54:25,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:54:25,862 INFO L87 Difference]: Start difference. First operand 7307 states and 9903 transitions. Second operand 3 states. [2021-01-06 20:54:29,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:54:29,040 INFO L93 Difference]: Finished difference Result 14429 states and 19567 transitions. [2021-01-06 20:54:29,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:54:29,041 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 100 [2021-01-06 20:54:29,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:54:29,048 INFO L225 Difference]: With dead ends: 14429 [2021-01-06 20:54:29,049 INFO L226 Difference]: Without dead ends: 7195 [2021-01-06 20:54:29,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:54:29,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7195 states. [2021-01-06 20:54:32,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7195 to 7193. [2021-01-06 20:54:32,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7193 states. [2021-01-06 20:54:32,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7193 states to 7193 states and 9583 transitions. [2021-01-06 20:54:32,226 INFO L78 Accepts]: Start accepts. Automaton has 7193 states and 9583 transitions. Word has length 100 [2021-01-06 20:54:32,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:54:32,226 INFO L481 AbstractCegarLoop]: Abstraction has 7193 states and 9583 transitions. [2021-01-06 20:54:32,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:54:32,227 INFO L276 IsEmpty]: Start isEmpty. Operand 7193 states and 9583 transitions. [2021-01-06 20:54:32,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-01-06 20:54:32,228 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:54:32,229 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:54:32,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-01-06 20:54:32,229 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:54:32,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:54:32,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1124551470, now seen corresponding path program 1 times [2021-01-06 20:54:32,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:54:32,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049986817] [2021-01-06 20:54:32,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:54:32,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:54:32,533 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:54:32,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049986817] [2021-01-06 20:54:32,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945027484] [2021-01-06 20:54:32,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 20:54:32,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:54:32,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 6 conjunts are in the unsatisfiable core [2021-01-06 20:54:32,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 20:54:33,136 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: variable got div captured [2021-01-06 20:54:33,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 20:54:33,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-01-06 20:54:33,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039864863] [2021-01-06 20:54:33,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-06 20:54:33,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:54:33,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-06 20:54:33,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-01-06 20:54:33,139 INFO L87 Difference]: Start difference. First operand 7193 states and 9583 transitions. Second operand 12 states. [2021-01-06 20:54:33,962 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 37 [2021-01-06 20:54:34,286 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 40 [2021-01-06 20:54:34,547 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 40 [2021-01-06 20:54:34,986 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 37 [2021-01-06 20:54:35,316 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 43 [2021-01-06 20:54:35,534 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 40 [2021-01-06 20:54:35,730 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 37 [2021-01-06 20:54:35,907 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 43 [2021-01-06 20:54:36,660 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 34 [2021-01-06 20:54:36,827 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 43 [2021-01-06 20:54:40,641 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 40 [2021-01-06 20:54:40,787 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 36 [2021-01-06 20:54:41,190 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 46 [2021-01-06 20:54:54,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:54:54,776 INFO L93 Difference]: Finished difference Result 41671 states and 54838 transitions. [2021-01-06 20:54:54,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-01-06 20:54:54,777 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 100 [2021-01-06 20:54:54,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:54:54,905 INFO L225 Difference]: With dead ends: 41671 [2021-01-06 20:54:54,905 INFO L226 Difference]: Without dead ends: 34551 [2021-01-06 20:54:54,921 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=456, Invalid=1266, Unknown=0, NotChecked=0, Total=1722 [2021-01-06 20:54:54,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34551 states. [2021-01-06 20:55:03,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34551 to 17319. [2021-01-06 20:55:03,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17319 states. [2021-01-06 20:55:03,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17319 states to 17319 states and 23038 transitions. [2021-01-06 20:55:03,996 INFO L78 Accepts]: Start accepts. Automaton has 17319 states and 23038 transitions. Word has length 100 [2021-01-06 20:55:03,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:55:03,997 INFO L481 AbstractCegarLoop]: Abstraction has 17319 states and 23038 transitions. [2021-01-06 20:55:03,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-06 20:55:03,997 INFO L276 IsEmpty]: Start isEmpty. Operand 17319 states and 23038 transitions. [2021-01-06 20:55:04,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-01-06 20:55:04,007 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:55:04,008 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:55:04,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-01-06 20:55:04,222 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:55:04,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:55:04,223 INFO L82 PathProgramCache]: Analyzing trace with hash -13722873, now seen corresponding path program 1 times [2021-01-06 20:55:04,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:55:04,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605710591] [2021-01-06 20:55:04,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:55:04,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:55:04,544 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:55:04,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605710591] [2021-01-06 20:55:04,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582713938] [2021-01-06 20:55:04,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 20:55:04,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:55:04,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-06 20:55:04,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 20:55:04,908 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 20:55:05,030 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 20:55:05,096 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 20:55:05,252 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 20:55:05,766 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:55:05,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 20:55:05,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12] total 19 [2021-01-06 20:55:05,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448488666] [2021-01-06 20:55:05,768 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-01-06 20:55:05,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:55:05,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-01-06 20:55:05,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2021-01-06 20:55:05,769 INFO L87 Difference]: Start difference. First operand 17319 states and 23038 transitions. Second operand 20 states. [2021-01-06 20:55:07,266 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 27 [2021-01-06 20:55:07,795 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 32 [2021-01-06 20:55:07,946 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 29 [2021-01-06 20:55:08,176 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 40 [2021-01-06 20:55:08,361 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 32 [2021-01-06 20:55:08,500 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 28 [2021-01-06 20:55:08,805 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 33 [2021-01-06 20:55:09,221 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 41 [2021-01-06 20:55:09,498 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 33 [2021-01-06 20:55:09,974 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 36 [2021-01-06 20:55:10,446 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 38 [2021-01-06 20:55:10,684 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2021-01-06 20:55:10,839 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 30 [2021-01-06 20:55:11,019 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 27 [2021-01-06 20:55:11,470 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 41 [2021-01-06 20:55:11,740 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 38 [2021-01-06 20:55:12,056 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 30 [2021-01-06 20:55:12,489 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2021-01-06 20:55:12,785 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 35 [2021-01-06 20:55:13,351 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 34 [2021-01-06 20:55:13,517 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 30 [2021-01-06 20:55:13,770 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 36 [2021-01-06 20:55:14,251 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 36 [2021-01-06 20:55:14,433 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 43 [2021-01-06 20:55:14,624 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 41 [2021-01-06 20:55:14,932 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 29 [2021-01-06 20:55:15,299 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 28 [2021-01-06 20:55:15,579 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 42 [2021-01-06 20:55:15,740 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 35 [2021-01-06 20:55:16,067 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2021-01-06 20:55:16,561 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 34 [2021-01-06 20:55:16,941 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 42 [2021-01-06 20:55:17,271 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2021-01-06 20:55:17,453 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 36 [2021-01-06 20:55:17,910 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 28 [2021-01-06 20:55:24,851 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2021-01-06 20:55:25,855 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 38 [2021-01-06 20:55:26,175 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 36 [2021-01-06 20:55:27,036 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2021-01-06 20:55:27,236 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 39 [2021-01-06 20:55:27,652 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 37 [2021-01-06 20:55:28,349 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2021-01-06 20:55:28,541 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 39 [2021-01-06 20:55:28,690 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 36 [2021-01-06 20:55:28,875 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 35 [2021-01-06 20:55:29,050 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 32 [2021-01-06 20:55:29,278 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 31 [2021-01-06 20:55:29,614 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 38 [2021-01-06 20:55:30,565 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2021-01-06 20:55:30,849 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2021-01-06 20:55:31,188 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 32 [2021-01-06 20:55:31,452 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 43 [2021-01-06 20:55:31,648 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 39 [2021-01-06 20:55:31,797 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 35 [2021-01-06 20:55:32,789 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2021-01-06 20:55:32,963 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 33 [2021-01-06 20:55:33,123 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 30 [2021-01-06 20:55:33,396 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 37 [2021-01-06 20:55:33,584 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 33 [2021-01-06 20:55:33,747 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 29 [2021-01-06 20:55:34,111 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 40 [2021-01-06 20:55:35,263 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2021-01-06 20:55:35,696 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 34 [2021-01-06 20:56:18,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:56:18,331 INFO L93 Difference]: Finished difference Result 103549 states and 134961 transitions. [2021-01-06 20:56:18,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2021-01-06 20:56:18,333 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 101 [2021-01-06 20:56:18,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:56:18,656 INFO L225 Difference]: With dead ends: 103549 [2021-01-06 20:56:18,656 INFO L226 Difference]: Without dead ends: 96429 [2021-01-06 20:56:18,742 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6841 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=2844, Invalid=15788, Unknown=0, NotChecked=0, Total=18632 [2021-01-06 20:56:18,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96429 states. [2021-01-06 20:56:28,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96429 to 17297. [2021-01-06 20:56:28,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17297 states. [2021-01-06 20:56:28,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17297 states to 17297 states and 23014 transitions. [2021-01-06 20:56:28,972 INFO L78 Accepts]: Start accepts. Automaton has 17297 states and 23014 transitions. Word has length 101 [2021-01-06 20:56:28,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:56:28,972 INFO L481 AbstractCegarLoop]: Abstraction has 17297 states and 23014 transitions. [2021-01-06 20:56:28,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2021-01-06 20:56:28,972 INFO L276 IsEmpty]: Start isEmpty. Operand 17297 states and 23014 transitions. [2021-01-06 20:56:28,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-01-06 20:56:28,976 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:56:28,976 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:56:29,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-01-06 20:56:29,178 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:56:29,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:56:29,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1589646215, now seen corresponding path program 1 times [2021-01-06 20:56:29,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:56:29,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462883691] [2021-01-06 20:56:29,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:56:29,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:56:29,874 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:56:29,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462883691] [2021-01-06 20:56:29,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973113713] [2021-01-06 20:56:29,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 20:56:30,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:56:30,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-06 20:56:30,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 20:56:30,349 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 29 [2021-01-06 20:56:30,788 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 20:56:30,860 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 20:56:31,099 INFO L757 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 20:56:31,486 INFO L757 QuantifierPusher]: Run 30 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 20:56:32,170 INFO L757 QuantifierPusher]: Run 40 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 20:56:32,855 INFO L757 QuantifierPusher]: Run 50 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 20:56:33,633 INFO L757 QuantifierPusher]: Run 60 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 20:56:34,741 INFO L757 QuantifierPusher]: Run 70 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 20:56:34,967 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 20:56:35,065 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 20:56:36,324 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:56:36,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 20:56:36,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 10] total 23 [2021-01-06 20:56:36,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297923391] [2021-01-06 20:56:36,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-01-06 20:56:36,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:56:36,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-01-06 20:56:36,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=490, Unknown=0, NotChecked=0, Total=552 [2021-01-06 20:56:36,326 INFO L87 Difference]: Start difference. First operand 17297 states and 23014 transitions. Second operand 24 states. [2021-01-06 20:56:36,627 WARN L197 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2021-01-06 20:56:37,257 WARN L197 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2021-01-06 20:56:37,783 WARN L197 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2021-01-06 20:56:38,002 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2021-01-06 20:56:38,368 WARN L197 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2021-01-06 20:56:38,966 WARN L197 SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 84 [2021-01-06 20:56:39,640 WARN L197 SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 87 [2021-01-06 20:56:40,044 WARN L197 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 79 [2021-01-06 20:56:40,461 WARN L197 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 78 [2021-01-06 20:56:41,013 WARN L197 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2021-01-06 20:56:41,590 WARN L197 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2021-01-06 20:56:42,005 WARN L197 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 81 [2021-01-06 20:56:42,280 WARN L197 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2021-01-06 20:56:42,579 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2021-01-06 20:56:43,437 WARN L197 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2021-01-06 20:56:43,806 WARN L197 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2021-01-06 20:56:44,077 WARN L197 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2021-01-06 20:56:44,846 WARN L197 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 77 [2021-01-06 20:56:45,087 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2021-01-06 20:56:46,582 WARN L197 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2021-01-06 20:56:47,250 WARN L197 SmtUtils]: Spent 487.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 77 [2021-01-06 20:56:48,536 WARN L197 SmtUtils]: Spent 951.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 96 [2021-01-06 20:56:49,038 WARN L197 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2021-01-06 20:56:50,165 WARN L197 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 104 DAG size of output: 102 [2021-01-06 20:56:50,492 WARN L197 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2021-01-06 20:56:51,273 WARN L197 SmtUtils]: Spent 649.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 82 [2021-01-06 20:56:51,962 WARN L197 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2021-01-06 20:56:52,360 WARN L197 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2021-01-06 20:56:53,523 WARN L197 SmtUtils]: Spent 774.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 88