/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-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 20:32:54,936 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 20:32:54,938 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 20:32:54,988 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 20:32:54,989 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 20:32:54,993 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 20:32:54,997 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 20:32:55,002 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 20:32:55,006 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 20:32:55,012 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 20:32:55,017 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 20:32:55,018 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 20:32:55,019 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 20:32:55,022 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 20:32:55,025 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 20:32:55,027 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 20:32:55,029 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 20:32:55,032 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 20:32:55,040 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 20:32:55,048 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 20:32:55,050 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 20:32:55,052 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 20:32:55,053 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 20:32:55,056 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 20:32:55,064 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-06 20:32:55,064 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-06 20:32:55,065 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-06 20:32:55,067 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-06 20:32:55,068 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-06 20:32:55,069 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-06 20:32:55,069 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 20:32:55,070 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 20:32:55,090 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 20:32:55,092 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 20:32:55,093 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 20:32:55,093 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 20:32:55,094 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 20:32:55,094 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 20:32:55,094 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 20:32:55,095 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 20:32:55,096 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 20:32:55,097 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 20:32:55,125 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 20:32:55,125 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 20:32:55,126 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 20:32:55,127 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 20:32:55,127 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 20:32:55,127 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 20:32:55,127 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 20:32:55,128 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 20:32:55,128 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 20:32:55,128 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 20:32:55,128 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 20:32:55,128 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 20:32:55,129 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 20:32:55,129 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 20:32:55,129 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 20:32:55,129 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 20:32:55,130 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 20:32:55,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 20:32:55,130 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 20:32:55,130 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 20:32:55,130 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 20:32:55,131 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 20:32:55,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 20:32:55,131 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 20:32:55,131 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 20:32:55,131 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 20:32:55,497 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 20:32:55,522 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 20:32:55,525 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 20:32:55,527 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 20:32:55,532 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 20:32:55,533 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2021-01-06 20:32:55,624 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/8df6b33e7/6fe2f2e3d0154882a0e71e7464e41348/FLAG10d6923bf [2021-01-06 20:32:56,258 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 20:32:56,262 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2021-01-06 20:32:56,278 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/8df6b33e7/6fe2f2e3d0154882a0e71e7464e41348/FLAG10d6923bf [2021-01-06 20:32:56,583 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/8df6b33e7/6fe2f2e3d0154882a0e71e7464e41348 [2021-01-06 20:32:56,587 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 20:32:56,592 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 20:32:56,597 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 20:32:56,597 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 20:32:56,602 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 20:32:56,604 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 08:32:56" (1/1) ... [2021-01-06 20:32:56,606 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@349553eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:32:56, skipping insertion in model container [2021-01-06 20:32:56,607 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 08:32:56" (1/1) ... [2021-01-06 20:32:56,622 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 20:32:56,699 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[~alive1~0,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[~alive2~0,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[~alive3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_6067~0,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_6144~0,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[~main__i2~0,] 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_6207~0,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[~main__i2~0,] 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[~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[~__tmp_6234_0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_0~1,] 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_6276~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_6277_0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_0~1,] 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 20:32:57,109 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-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[7067,7080] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~3,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~3,] 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[~__tmp_6234_0~0,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[~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[~__return_6290~0,GLOBAL] 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[~send3~0,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[~node3____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_1~0,] 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[~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[~node2____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_1~0,] 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_0~2,] 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_0~2,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~__return_6445~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_6277_0~0,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[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,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[~node3____CPAchecker_TMP_1~1,] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_1~1,] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_1~1,] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_1~1,] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] [2021-01-06 20:32:57,218 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 20:32:57,243 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[~alive1~0,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[~alive2~0,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[~alive3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_6067~0,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_6144~0,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[~main__i2~0,] 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_6207~0,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[~main__i2~0,] 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[~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[~__tmp_6234_0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_0~1,] 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_6276~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_6277_0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_0~1,] 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 20:32:57,377 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-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[7067,7080] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~3,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~3,] 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[~__tmp_6234_0~0,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[~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[~__return_6290~0,GLOBAL] 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[~send3~0,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[~node3____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_1~0,] 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[~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[~node2____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_1~0,] 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_0~2,] 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_0~2,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~__return_6445~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_6277_0~0,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[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,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[~node3____CPAchecker_TMP_1~1,] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_1~1,] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_1~1,] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_1~1,] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] [2021-01-06 20:32:57,438 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 20:32:57,477 INFO L208 MainTranslator]: Completed translation [2021-01-06 20:32:57,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:32:57 WrapperNode [2021-01-06 20:32:57,477 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 20:32:57,479 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 20:32:57,479 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 20:32:57,480 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 20:32:57,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:32:57" (1/1) ... [2021-01-06 20:32:57,523 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:32:57" (1/1) ... [2021-01-06 20:32:57,580 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 20:32:57,581 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 20:32:57,582 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 20:32:57,582 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 20:32:57,592 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:32:57" (1/1) ... [2021-01-06 20:32:57,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:32:57" (1/1) ... [2021-01-06 20:32:57,596 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:32:57" (1/1) ... [2021-01-06 20:32:57,597 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:32:57" (1/1) ... [2021-01-06 20:32:57,607 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:32:57" (1/1) ... [2021-01-06 20:32:57,625 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:32:57" (1/1) ... [2021-01-06 20:32:57,635 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:32:57" (1/1) ... [2021-01-06 20:32:57,644 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 20:32:57,649 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 20:32:57,649 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 20:32:57,649 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 20:32:57,652 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:32:57" (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 20:32:57,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 20:32:57,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 20:32:57,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 20:32:57,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 20:32:58,806 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 20:32:58,807 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-01-06 20:32:58,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 08:32:58 BoogieIcfgContainer [2021-01-06 20:32:58,809 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 20:32:58,811 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 20:32:58,811 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 20:32:58,815 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 20:32:58,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 08:32:56" (1/3) ... [2021-01-06 20:32:58,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e622bfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 08:32:58, skipping insertion in model container [2021-01-06 20:32:58,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:32:57" (2/3) ... [2021-01-06 20:32:58,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e622bfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 08:32:58, skipping insertion in model container [2021-01-06 20:32:58,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 08:32:58" (3/3) ... [2021-01-06 20:32:58,818 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2021-01-06 20:32:58,825 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 20:32:58,831 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 20:32:58,851 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 20:32:58,880 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 20:32:58,880 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 20:32:58,880 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 20:32:58,880 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 20:32:58,880 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 20:32:58,881 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 20:32:58,881 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 20:32:58,881 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 20:32:58,901 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states. [2021-01-06 20:32:58,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-01-06 20:32:58,909 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:32:58,910 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 20:32:58,911 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:32:58,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:32:58,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1935961454, now seen corresponding path program 1 times [2021-01-06 20:32:58,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:32:58,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930523825] [2021-01-06 20:32:58,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:32:59,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:32:59,328 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 20:32:59,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930523825] [2021-01-06 20:32:59,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:32:59,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:32:59,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523051607] [2021-01-06 20:32:59,344 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:32:59,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:32:59,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:32:59,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:32:59,372 INFO L87 Difference]: Start difference. First operand 148 states. Second operand 3 states. [2021-01-06 20:32:59,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:32:59,520 INFO L93 Difference]: Finished difference Result 286 states and 465 transitions. [2021-01-06 20:32:59,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:32:59,522 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49 [2021-01-06 20:32:59,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:32:59,560 INFO L225 Difference]: With dead ends: 286 [2021-01-06 20:32:59,560 INFO L226 Difference]: Without dead ends: 218 [2021-01-06 20:32:59,564 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 20:32:59,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-01-06 20:32:59,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 216. [2021-01-06 20:32:59,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2021-01-06 20:32:59,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 319 transitions. [2021-01-06 20:32:59,629 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 319 transitions. Word has length 49 [2021-01-06 20:32:59,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:32:59,630 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 319 transitions. [2021-01-06 20:32:59,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:32:59,630 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 319 transitions. [2021-01-06 20:32:59,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-01-06 20:32:59,633 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:32:59,633 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 20:32:59,633 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 20:32:59,633 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:32:59,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:32:59,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1118200662, now seen corresponding path program 1 times [2021-01-06 20:32:59,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:32:59,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431910038] [2021-01-06 20:32:59,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:32:59,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:32:59,774 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 20:32:59,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431910038] [2021-01-06 20:32:59,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:32:59,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:32:59,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088848821] [2021-01-06 20:32:59,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:32:59,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:32:59,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:32:59,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:32:59,778 INFO L87 Difference]: Start difference. First operand 216 states and 319 transitions. Second operand 3 states. [2021-01-06 20:32:59,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:32:59,867 INFO L93 Difference]: Finished difference Result 522 states and 789 transitions. [2021-01-06 20:32:59,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:32:59,868 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2021-01-06 20:32:59,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:32:59,874 INFO L225 Difference]: With dead ends: 522 [2021-01-06 20:32:59,875 INFO L226 Difference]: Without dead ends: 370 [2021-01-06 20:32:59,876 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 20:32:59,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2021-01-06 20:32:59,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 368. [2021-01-06 20:32:59,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368 states. [2021-01-06 20:32:59,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 545 transitions. [2021-01-06 20:32:59,941 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 545 transitions. Word has length 52 [2021-01-06 20:32:59,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:32:59,941 INFO L481 AbstractCegarLoop]: Abstraction has 368 states and 545 transitions. [2021-01-06 20:32:59,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:32:59,942 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 545 transitions. [2021-01-06 20:32:59,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-01-06 20:32:59,944 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:32:59,944 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 20:32:59,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 20:32:59,945 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:32:59,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:32:59,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1570903849, now seen corresponding path program 1 times [2021-01-06 20:32:59,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:32:59,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364213397] [2021-01-06 20:32:59,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:32:59,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:33:00,050 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 20:33:00,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364213397] [2021-01-06 20:33:00,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:33:00,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:33:00,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174723247] [2021-01-06 20:33:00,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:33:00,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:33:00,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:33:00,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:33:00,054 INFO L87 Difference]: Start difference. First operand 368 states and 545 transitions. Second operand 3 states. [2021-01-06 20:33:00,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:33:00,120 INFO L93 Difference]: Finished difference Result 884 states and 1325 transitions. [2021-01-06 20:33:00,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:33:00,121 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2021-01-06 20:33:00,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:33:00,126 INFO L225 Difference]: With dead ends: 884 [2021-01-06 20:33:00,127 INFO L226 Difference]: Without dead ends: 628 [2021-01-06 20:33:00,132 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 20:33:00,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2021-01-06 20:33:00,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 626. [2021-01-06 20:33:00,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 626 states. [2021-01-06 20:33:00,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 919 transitions. [2021-01-06 20:33:00,210 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 919 transitions. Word has length 52 [2021-01-06 20:33:00,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:33:00,211 INFO L481 AbstractCegarLoop]: Abstraction has 626 states and 919 transitions. [2021-01-06 20:33:00,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:33:00,211 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 919 transitions. [2021-01-06 20:33:00,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-01-06 20:33:00,214 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:33:00,214 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 20:33:00,215 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 20:33:00,215 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:33:00,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:33:00,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1320706551, now seen corresponding path program 1 times [2021-01-06 20:33:00,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:33:00,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397793049] [2021-01-06 20:33:00,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:33:00,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:33:00,289 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 20:33:00,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397793049] [2021-01-06 20:33:00,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:33:00,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:33:00,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866126494] [2021-01-06 20:33:00,291 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:33:00,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:33:00,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:33:00,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:33:00,292 INFO L87 Difference]: Start difference. First operand 626 states and 919 transitions. Second operand 3 states. [2021-01-06 20:33:00,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:33:00,379 INFO L93 Difference]: Finished difference Result 1644 states and 2427 transitions. [2021-01-06 20:33:00,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:33:00,380 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2021-01-06 20:33:00,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:33:00,386 INFO L225 Difference]: With dead ends: 1644 [2021-01-06 20:33:00,386 INFO L226 Difference]: Without dead ends: 1106 [2021-01-06 20:33:00,388 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 20:33:00,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2021-01-06 20:33:00,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 1104. [2021-01-06 20:33:00,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1104 states. [2021-01-06 20:33:00,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1104 states to 1104 states and 1589 transitions. [2021-01-06 20:33:00,480 INFO L78 Accepts]: Start accepts. Automaton has 1104 states and 1589 transitions. Word has length 52 [2021-01-06 20:33:00,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:33:00,481 INFO L481 AbstractCegarLoop]: Abstraction has 1104 states and 1589 transitions. [2021-01-06 20:33:00,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:33:00,481 INFO L276 IsEmpty]: Start isEmpty. Operand 1104 states and 1589 transitions. [2021-01-06 20:33:00,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-01-06 20:33:00,485 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:33:00,486 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 20:33:00,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 20:33:00,486 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:33:00,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:33:00,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1834372633, now seen corresponding path program 1 times [2021-01-06 20:33:00,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:33:00,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870844360] [2021-01-06 20:33:00,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:33:00,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:33:00,636 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 20:33:00,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870844360] [2021-01-06 20:33:00,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:33:00,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 20:33:00,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343032179] [2021-01-06 20:33:00,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 20:33:00,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:33:00,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 20:33:00,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 20:33:00,639 INFO L87 Difference]: Start difference. First operand 1104 states and 1589 transitions. Second operand 5 states. [2021-01-06 20:33:00,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:33:00,863 INFO L93 Difference]: Finished difference Result 3406 states and 4991 transitions. [2021-01-06 20:33:00,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 20:33:00,864 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 53 [2021-01-06 20:33:00,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:33:00,879 INFO L225 Difference]: With dead ends: 3406 [2021-01-06 20:33:00,879 INFO L226 Difference]: Without dead ends: 2732 [2021-01-06 20:33:00,881 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 20:33:00,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2732 states. [2021-01-06 20:33:00,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2732 to 1311. [2021-01-06 20:33:00,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1311 states. [2021-01-06 20:33:01,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1311 states to 1311 states and 1898 transitions. [2021-01-06 20:33:01,004 INFO L78 Accepts]: Start accepts. Automaton has 1311 states and 1898 transitions. Word has length 53 [2021-01-06 20:33:01,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:33:01,005 INFO L481 AbstractCegarLoop]: Abstraction has 1311 states and 1898 transitions. [2021-01-06 20:33:01,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 20:33:01,005 INFO L276 IsEmpty]: Start isEmpty. Operand 1311 states and 1898 transitions. [2021-01-06 20:33:01,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-01-06 20:33:01,007 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:33:01,007 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] [2021-01-06 20:33:01,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-06 20:33:01,008 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:33:01,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:33:01,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1785989049, now seen corresponding path program 1 times [2021-01-06 20:33:01,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:33:01,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506496691] [2021-01-06 20:33:01,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:33:01,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:33:01,109 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 20:33:01,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506496691] [2021-01-06 20:33:01,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:33:01,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 20:33:01,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475453467] [2021-01-06 20:33:01,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 20:33:01,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:33:01,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 20:33:01,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-01-06 20:33:01,115 INFO L87 Difference]: Start difference. First operand 1311 states and 1898 transitions. Second operand 6 states. [2021-01-06 20:33:01,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:33:01,587 INFO L93 Difference]: Finished difference Result 3926 states and 5704 transitions. [2021-01-06 20:33:01,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 20:33:01,588 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 53 [2021-01-06 20:33:01,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:33:01,602 INFO L225 Difference]: With dead ends: 3926 [2021-01-06 20:33:01,603 INFO L226 Difference]: Without dead ends: 2693 [2021-01-06 20:33:01,606 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-01-06 20:33:01,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2693 states. [2021-01-06 20:33:01,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2693 to 2669. [2021-01-06 20:33:01,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2669 states. [2021-01-06 20:33:01,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2669 states to 2669 states and 3860 transitions. [2021-01-06 20:33:01,816 INFO L78 Accepts]: Start accepts. Automaton has 2669 states and 3860 transitions. Word has length 53 [2021-01-06 20:33:01,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:33:01,816 INFO L481 AbstractCegarLoop]: Abstraction has 2669 states and 3860 transitions. [2021-01-06 20:33:01,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 20:33:01,817 INFO L276 IsEmpty]: Start isEmpty. Operand 2669 states and 3860 transitions. [2021-01-06 20:33:01,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-01-06 20:33:01,819 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:33:01,820 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 20:33:01,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-06 20:33:01,820 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:33:01,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:33:01,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1176645599, now seen corresponding path program 1 times [2021-01-06 20:33:01,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:33:01,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027491605] [2021-01-06 20:33:01,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:33:01,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:33:01,927 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 20:33:01,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027491605] [2021-01-06 20:33:01,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:33:01,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 20:33:01,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008936169] [2021-01-06 20:33:01,928 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 20:33:01,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:33:01,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 20:33:01,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 20:33:01,929 INFO L87 Difference]: Start difference. First operand 2669 states and 3860 transitions. Second operand 5 states. [2021-01-06 20:33:02,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:33:02,419 INFO L93 Difference]: Finished difference Result 6346 states and 9163 transitions. [2021-01-06 20:33:02,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 20:33:02,420 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 54 [2021-01-06 20:33:02,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:33:02,439 INFO L225 Difference]: With dead ends: 6346 [2021-01-06 20:33:02,439 INFO L226 Difference]: Without dead ends: 3764 [2021-01-06 20:33:02,444 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 20:33:02,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3764 states. [2021-01-06 20:33:02,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3764 to 2669. [2021-01-06 20:33:02,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2669 states. [2021-01-06 20:33:02,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2669 states to 2669 states and 3822 transitions. [2021-01-06 20:33:02,720 INFO L78 Accepts]: Start accepts. Automaton has 2669 states and 3822 transitions. Word has length 54 [2021-01-06 20:33:02,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:33:02,721 INFO L481 AbstractCegarLoop]: Abstraction has 2669 states and 3822 transitions. [2021-01-06 20:33:02,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 20:33:02,722 INFO L276 IsEmpty]: Start isEmpty. Operand 2669 states and 3822 transitions. [2021-01-06 20:33:02,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-01-06 20:33:02,724 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:33:02,724 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 20:33:02,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-06 20:33:02,725 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:33:02,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:33:02,727 INFO L82 PathProgramCache]: Analyzing trace with hash 2121579715, now seen corresponding path program 1 times [2021-01-06 20:33:02,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:33:02,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636146754] [2021-01-06 20:33:02,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:33:02,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:33:02,880 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 20:33:02,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636146754] [2021-01-06 20:33:02,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:33:02,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 20:33:02,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389113154] [2021-01-06 20:33:02,882 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 20:33:02,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:33:02,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 20:33:02,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-01-06 20:33:02,883 INFO L87 Difference]: Start difference. First operand 2669 states and 3822 transitions. Second operand 5 states. [2021-01-06 20:33:03,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:33:03,378 INFO L93 Difference]: Finished difference Result 7945 states and 11474 transitions. [2021-01-06 20:33:03,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 20:33:03,379 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 54 [2021-01-06 20:33:03,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:33:03,410 INFO L225 Difference]: With dead ends: 7945 [2021-01-06 20:33:03,411 INFO L226 Difference]: Without dead ends: 6331 [2021-01-06 20:33:03,417 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 20:33:03,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6331 states. [2021-01-06 20:33:03,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6331 to 3325. [2021-01-06 20:33:03,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3325 states. [2021-01-06 20:33:03,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3325 states to 3325 states and 4784 transitions. [2021-01-06 20:33:03,744 INFO L78 Accepts]: Start accepts. Automaton has 3325 states and 4784 transitions. Word has length 54 [2021-01-06 20:33:03,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:33:03,745 INFO L481 AbstractCegarLoop]: Abstraction has 3325 states and 4784 transitions. [2021-01-06 20:33:03,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 20:33:03,745 INFO L276 IsEmpty]: Start isEmpty. Operand 3325 states and 4784 transitions. [2021-01-06 20:33:03,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-01-06 20:33:03,748 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:33:03,748 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, 1, 1] [2021-01-06 20:33:03,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-06 20:33:03,748 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:33:03,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:33:03,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1977718599, now seen corresponding path program 1 times [2021-01-06 20:33:03,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:33:03,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894314817] [2021-01-06 20:33:03,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:33:03,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:33:03,862 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 20:33:03,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894314817] [2021-01-06 20:33:03,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:33:03,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 20:33:03,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272521503] [2021-01-06 20:33:03,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 20:33:03,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:33:03,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 20:33:03,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 20:33:03,870 INFO L87 Difference]: Start difference. First operand 3325 states and 4784 transitions. Second operand 5 states. [2021-01-06 20:33:04,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:33:04,503 INFO L93 Difference]: Finished difference Result 8592 states and 12418 transitions. [2021-01-06 20:33:04,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 20:33:04,504 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2021-01-06 20:33:04,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:33:04,538 INFO L225 Difference]: With dead ends: 8592 [2021-01-06 20:33:04,539 INFO L226 Difference]: Without dead ends: 6978 [2021-01-06 20:33:04,544 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 20:33:04,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6978 states. [2021-01-06 20:33:04,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6978 to 4130. [2021-01-06 20:33:04,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4130 states. [2021-01-06 20:33:04,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4130 states to 4130 states and 5970 transitions. [2021-01-06 20:33:04,943 INFO L78 Accepts]: Start accepts. Automaton has 4130 states and 5970 transitions. Word has length 55 [2021-01-06 20:33:04,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:33:04,943 INFO L481 AbstractCegarLoop]: Abstraction has 4130 states and 5970 transitions. [2021-01-06 20:33:04,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 20:33:04,943 INFO L276 IsEmpty]: Start isEmpty. Operand 4130 states and 5970 transitions. [2021-01-06 20:33:04,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-01-06 20:33:04,946 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:33:04,946 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] [2021-01-06 20:33:04,946 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-01-06 20:33:04,947 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:33:04,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:33:04,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1089404270, now seen corresponding path program 1 times [2021-01-06 20:33:04,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:33:04,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618738687] [2021-01-06 20:33:04,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:33:04,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:33:05,019 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 20:33:05,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618738687] [2021-01-06 20:33:05,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:33:05,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 20:33:05,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272168065] [2021-01-06 20:33:05,021 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 20:33:05,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:33:05,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 20:33:05,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-01-06 20:33:05,022 INFO L87 Difference]: Start difference. First operand 4130 states and 5970 transitions. Second operand 6 states. [2021-01-06 20:33:06,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:33:06,006 INFO L93 Difference]: Finished difference Result 13020 states and 18814 transitions. [2021-01-06 20:33:06,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 20:33:06,006 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2021-01-06 20:33:06,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:33:06,030 INFO L225 Difference]: With dead ends: 13020 [2021-01-06 20:33:06,030 INFO L226 Difference]: Without dead ends: 8932 [2021-01-06 20:33:06,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-01-06 20:33:06,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8932 states. [2021-01-06 20:33:06,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8932 to 8866. [2021-01-06 20:33:06,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8866 states. [2021-01-06 20:33:06,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8866 states to 8866 states and 12750 transitions. [2021-01-06 20:33:06,901 INFO L78 Accepts]: Start accepts. Automaton has 8866 states and 12750 transitions. Word has length 58 [2021-01-06 20:33:06,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:33:06,901 INFO L481 AbstractCegarLoop]: Abstraction has 8866 states and 12750 transitions. [2021-01-06 20:33:06,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 20:33:06,902 INFO L276 IsEmpty]: Start isEmpty. Operand 8866 states and 12750 transitions. [2021-01-06 20:33:06,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-01-06 20:33:06,906 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:33:06,907 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] [2021-01-06 20:33:06,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-01-06 20:33:06,907 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:33:06,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:33:06,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1572096567, now seen corresponding path program 1 times [2021-01-06 20:33:06,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:33:06,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46022145] [2021-01-06 20:33:06,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:33:06,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:33:07,015 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 20:33:07,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46022145] [2021-01-06 20:33:07,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:33:07,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 20:33:07,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545380655] [2021-01-06 20:33:07,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 20:33:07,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:33:07,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 20:33:07,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-06 20:33:07,020 INFO L87 Difference]: Start difference. First operand 8866 states and 12750 transitions. Second operand 7 states. [2021-01-06 20:33:10,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:33:10,536 INFO L93 Difference]: Finished difference Result 41460 states and 59369 transitions. [2021-01-06 20:33:10,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 20:33:10,536 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 59 [2021-01-06 20:33:10,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:33:10,639 INFO L225 Difference]: With dead ends: 41460 [2021-01-06 20:33:10,639 INFO L226 Difference]: Without dead ends: 38612 [2021-01-06 20:33:10,653 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-01-06 20:33:10,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38612 states. [2021-01-06 20:33:11,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38612 to 8878. [2021-01-06 20:33:11,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8878 states. [2021-01-06 20:33:11,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8878 states to 8878 states and 12766 transitions. [2021-01-06 20:33:11,688 INFO L78 Accepts]: Start accepts. Automaton has 8878 states and 12766 transitions. Word has length 59 [2021-01-06 20:33:11,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:33:11,689 INFO L481 AbstractCegarLoop]: Abstraction has 8878 states and 12766 transitions. [2021-01-06 20:33:11,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 20:33:11,689 INFO L276 IsEmpty]: Start isEmpty. Operand 8878 states and 12766 transitions. [2021-01-06 20:33:11,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-01-06 20:33:11,692 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:33:11,692 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] [2021-01-06 20:33:11,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-01-06 20:33:11,693 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:33:11,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:33:11,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1131093665, now seen corresponding path program 1 times [2021-01-06 20:33:11,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:33:11,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539997149] [2021-01-06 20:33:11,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:33:11,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:33:11,767 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 20:33:11,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539997149] [2021-01-06 20:33:11,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:33:11,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 20:33:11,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032369932] [2021-01-06 20:33:11,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 20:33:11,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:33:11,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 20:33:11,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-06 20:33:11,770 INFO L87 Difference]: Start difference. First operand 8878 states and 12766 transitions. Second operand 7 states. [2021-01-06 20:33:15,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:33:15,219 INFO L93 Difference]: Finished difference Result 33372 states and 47566 transitions. [2021-01-06 20:33:15,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 20:33:15,220 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 60 [2021-01-06 20:33:15,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:33:15,277 INFO L225 Difference]: With dead ends: 33372 [2021-01-06 20:33:15,277 INFO L226 Difference]: Without dead ends: 29383 [2021-01-06 20:33:15,290 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-01-06 20:33:15,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29383 states. [2021-01-06 20:33:16,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29383 to 8898. [2021-01-06 20:33:16,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8898 states. [2021-01-06 20:33:16,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8898 states to 8898 states and 12790 transitions. [2021-01-06 20:33:16,554 INFO L78 Accepts]: Start accepts. Automaton has 8898 states and 12790 transitions. Word has length 60 [2021-01-06 20:33:16,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:33:16,555 INFO L481 AbstractCegarLoop]: Abstraction has 8898 states and 12790 transitions. [2021-01-06 20:33:16,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 20:33:16,555 INFO L276 IsEmpty]: Start isEmpty. Operand 8898 states and 12790 transitions. [2021-01-06 20:33:16,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-01-06 20:33:16,558 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:33:16,559 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] [2021-01-06 20:33:16,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-01-06 20:33:16,559 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:33:16,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:33:16,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1840434496, now seen corresponding path program 1 times [2021-01-06 20:33:16,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:33:16,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346114177] [2021-01-06 20:33:16,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:33:16,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:33:16,642 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 20:33:16,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346114177] [2021-01-06 20:33:16,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:33:16,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 20:33:16,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46526460] [2021-01-06 20:33:16,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 20:33:16,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:33:16,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 20:33:16,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-06 20:33:16,644 INFO L87 Difference]: Start difference. First operand 8898 states and 12790 transitions. Second operand 7 states. [2021-01-06 20:33:21,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:33:21,161 INFO L93 Difference]: Finished difference Result 39144 states and 55928 transitions. [2021-01-06 20:33:21,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 20:33:21,161 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 60 [2021-01-06 20:33:21,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:33:21,224 INFO L225 Difference]: With dead ends: 39144 [2021-01-06 20:33:21,224 INFO L226 Difference]: Without dead ends: 35323 [2021-01-06 20:33:21,239 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-01-06 20:33:21,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35323 states. [2021-01-06 20:33:22,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35323 to 8976. [2021-01-06 20:33:22,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8976 states. [2021-01-06 20:33:22,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8976 states to 8976 states and 12890 transitions. [2021-01-06 20:33:22,505 INFO L78 Accepts]: Start accepts. Automaton has 8976 states and 12890 transitions. Word has length 60 [2021-01-06 20:33:22,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:33:22,505 INFO L481 AbstractCegarLoop]: Abstraction has 8976 states and 12890 transitions. [2021-01-06 20:33:22,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 20:33:22,506 INFO L276 IsEmpty]: Start isEmpty. Operand 8976 states and 12890 transitions. [2021-01-06 20:33:22,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-01-06 20:33:22,510 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:33:22,510 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] [2021-01-06 20:33:22,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-01-06 20:33:22,510 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:33:22,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:33:22,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1556118219, now seen corresponding path program 1 times [2021-01-06 20:33:22,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:33:22,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533912078] [2021-01-06 20:33:22,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:33:22,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:33:22,748 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 20:33:22,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533912078] [2021-01-06 20:33:22,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:33:22,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-01-06 20:33:22,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034320975] [2021-01-06 20:33:22,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 20:33:22,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:33:22,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 20:33:22,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-01-06 20:33:22,750 INFO L87 Difference]: Start difference. First operand 8976 states and 12890 transitions. Second operand 10 states. [2021-01-06 20:33:27,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:33:27,278 INFO L93 Difference]: Finished difference Result 30946 states and 44261 transitions. [2021-01-06 20:33:27,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-01-06 20:33:27,278 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 62 [2021-01-06 20:33:27,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:33:27,309 INFO L225 Difference]: With dead ends: 30946 [2021-01-06 20:33:27,310 INFO L226 Difference]: Without dead ends: 22872 [2021-01-06 20:33:27,325 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=234, Invalid=636, Unknown=0, NotChecked=0, Total=870 [2021-01-06 20:33:27,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22872 states. [2021-01-06 20:33:28,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22872 to 8976. [2021-01-06 20:33:28,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8976 states. [2021-01-06 20:33:28,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8976 states to 8976 states and 12884 transitions. [2021-01-06 20:33:28,471 INFO L78 Accepts]: Start accepts. Automaton has 8976 states and 12884 transitions. Word has length 62 [2021-01-06 20:33:28,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:33:28,471 INFO L481 AbstractCegarLoop]: Abstraction has 8976 states and 12884 transitions. [2021-01-06 20:33:28,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 20:33:28,471 INFO L276 IsEmpty]: Start isEmpty. Operand 8976 states and 12884 transitions. [2021-01-06 20:33:28,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-01-06 20:33:28,475 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:33:28,475 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] [2021-01-06 20:33:28,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-01-06 20:33:28,475 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:33:28,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:33:28,476 INFO L82 PathProgramCache]: Analyzing trace with hash -443125389, now seen corresponding path program 1 times [2021-01-06 20:33:28,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:33:28,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904404184] [2021-01-06 20:33:28,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:33:28,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:33:28,735 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 20:33:28,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904404184] [2021-01-06 20:33:28,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:33:28,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-01-06 20:33:28,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178776786] [2021-01-06 20:33:28,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 20:33:28,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:33:28,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 20:33:28,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-01-06 20:33:28,737 INFO L87 Difference]: Start difference. First operand 8976 states and 12884 transitions. Second operand 10 states. [2021-01-06 20:33:33,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:33:33,645 INFO L93 Difference]: Finished difference Result 30322 states and 43433 transitions. [2021-01-06 20:33:33,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-01-06 20:33:33,646 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 62 [2021-01-06 20:33:33,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:33:33,676 INFO L225 Difference]: With dead ends: 30322 [2021-01-06 20:33:33,676 INFO L226 Difference]: Without dead ends: 22508 [2021-01-06 20:33:33,693 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=250, Invalid=742, Unknown=0, NotChecked=0, Total=992 [2021-01-06 20:33:33,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22508 states. [2021-01-06 20:33:35,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22508 to 8851. [2021-01-06 20:33:35,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8851 states. [2021-01-06 20:33:35,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8851 states to 8851 states and 12695 transitions. [2021-01-06 20:33:35,079 INFO L78 Accepts]: Start accepts. Automaton has 8851 states and 12695 transitions. Word has length 62 [2021-01-06 20:33:35,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:33:35,080 INFO L481 AbstractCegarLoop]: Abstraction has 8851 states and 12695 transitions. [2021-01-06 20:33:35,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 20:33:35,080 INFO L276 IsEmpty]: Start isEmpty. Operand 8851 states and 12695 transitions. [2021-01-06 20:33:35,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-01-06 20:33:35,083 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:33:35,083 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] [2021-01-06 20:33:35,083 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-01-06 20:33:35,083 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:33:35,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:33:35,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1162737396, now seen corresponding path program 1 times [2021-01-06 20:33:35,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:33:35,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381896292] [2021-01-06 20:33:35,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:33:35,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:33:35,273 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 20:33:35,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381896292] [2021-01-06 20:33:35,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:33:35,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-01-06 20:33:35,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246040445] [2021-01-06 20:33:35,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 20:33:35,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:33:35,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 20:33:35,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-01-06 20:33:35,276 INFO L87 Difference]: Start difference. First operand 8851 states and 12695 transitions. Second operand 10 states. [2021-01-06 20:33:40,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:33:40,325 INFO L93 Difference]: Finished difference Result 31534 states and 45157 transitions. [2021-01-06 20:33:40,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-01-06 20:33:40,326 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 62 [2021-01-06 20:33:40,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:33:40,368 INFO L225 Difference]: With dead ends: 31534 [2021-01-06 20:33:40,368 INFO L226 Difference]: Without dead ends: 23616 [2021-01-06 20:33:40,383 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2021-01-06 20:33:40,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23616 states. [2021-01-06 20:33:41,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23616 to 8680. [2021-01-06 20:33:41,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8680 states. [2021-01-06 20:33:41,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8680 states to 8680 states and 12443 transitions. [2021-01-06 20:33:41,886 INFO L78 Accepts]: Start accepts. Automaton has 8680 states and 12443 transitions. Word has length 62 [2021-01-06 20:33:41,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:33:41,886 INFO L481 AbstractCegarLoop]: Abstraction has 8680 states and 12443 transitions. [2021-01-06 20:33:41,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 20:33:41,886 INFO L276 IsEmpty]: Start isEmpty. Operand 8680 states and 12443 transitions. [2021-01-06 20:33:41,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-01-06 20:33:41,889 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:33:41,889 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] [2021-01-06 20:33:41,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-01-06 20:33:41,890 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:33:41,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:33:41,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1143949417, now seen corresponding path program 1 times [2021-01-06 20:33:41,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:33:41,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407917665] [2021-01-06 20:33:41,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:33:41,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:33:41,935 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 20:33:41,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407917665] [2021-01-06 20:33:41,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:33:41,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:33:41,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825663611] [2021-01-06 20:33:41,936 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:33:41,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:33:41,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:33:41,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:33:41,937 INFO L87 Difference]: Start difference. First operand 8680 states and 12443 transitions. Second operand 3 states. [2021-01-06 20:33:43,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:33:43,343 INFO L93 Difference]: Finished difference Result 12476 states and 17864 transitions. [2021-01-06 20:33:43,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:33:43,344 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2021-01-06 20:33:43,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:33:43,355 INFO L225 Difference]: With dead ends: 12476 [2021-01-06 20:33:43,355 INFO L226 Difference]: Without dead ends: 8667 [2021-01-06 20:33:43,362 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 20:33:43,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8667 states. [2021-01-06 20:33:44,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8667 to 8665. [2021-01-06 20:33:44,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8665 states. [2021-01-06 20:33:44,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8665 states to 8665 states and 12236 transitions. [2021-01-06 20:33:44,622 INFO L78 Accepts]: Start accepts. Automaton has 8665 states and 12236 transitions. Word has length 63 [2021-01-06 20:33:44,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:33:44,622 INFO L481 AbstractCegarLoop]: Abstraction has 8665 states and 12236 transitions. [2021-01-06 20:33:44,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:33:44,622 INFO L276 IsEmpty]: Start isEmpty. Operand 8665 states and 12236 transitions. [2021-01-06 20:33:44,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-01-06 20:33:44,625 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:33:44,625 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] [2021-01-06 20:33:44,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-01-06 20:33:44,626 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:33:44,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:33:44,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1363691260, now seen corresponding path program 1 times [2021-01-06 20:33:44,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:33:44,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895003799] [2021-01-06 20:33:44,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:33:44,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:33:44,668 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 20:33:44,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895003799] [2021-01-06 20:33:44,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:33:44,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:33:44,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585862719] [2021-01-06 20:33:44,669 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:33:44,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:33:44,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:33:44,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:33:44,670 INFO L87 Difference]: Start difference. First operand 8665 states and 12236 transitions. Second operand 3 states. [2021-01-06 20:33:45,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:33:45,925 INFO L93 Difference]: Finished difference Result 11463 states and 16151 transitions. [2021-01-06 20:33:45,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:33:45,925 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2021-01-06 20:33:45,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:33:45,932 INFO L225 Difference]: With dead ends: 11463 [2021-01-06 20:33:45,932 INFO L226 Difference]: Without dead ends: 7668 [2021-01-06 20:33:45,936 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 20:33:45,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7668 states. [2021-01-06 20:33:47,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7668 to 7666. [2021-01-06 20:33:47,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7666 states. [2021-01-06 20:33:47,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7666 states to 7666 states and 10631 transitions. [2021-01-06 20:33:47,025 INFO L78 Accepts]: Start accepts. Automaton has 7666 states and 10631 transitions. Word has length 63 [2021-01-06 20:33:47,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:33:47,025 INFO L481 AbstractCegarLoop]: Abstraction has 7666 states and 10631 transitions. [2021-01-06 20:33:47,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:33:47,025 INFO L276 IsEmpty]: Start isEmpty. Operand 7666 states and 10631 transitions. [2021-01-06 20:33:47,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-01-06 20:33:47,027 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:33:47,027 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] [2021-01-06 20:33:47,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-01-06 20:33:47,028 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:33:47,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:33:47,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1254313906, now seen corresponding path program 1 times [2021-01-06 20:33:47,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:33:47,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389190004] [2021-01-06 20:33:47,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:33:47,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:33:47,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:33:47,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389190004] [2021-01-06 20:33:47,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:33:47,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:33:47,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614795001] [2021-01-06 20:33:47,085 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:33:47,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:33:47,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:33:47,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:33:47,087 INFO L87 Difference]: Start difference. First operand 7666 states and 10631 transitions. Second operand 3 states. [2021-01-06 20:33:48,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:33:48,570 INFO L93 Difference]: Finished difference Result 9342 states and 12899 transitions. [2021-01-06 20:33:48,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:33:48,571 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2021-01-06 20:33:48,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:33:48,585 INFO L225 Difference]: With dead ends: 9342 [2021-01-06 20:33:48,586 INFO L226 Difference]: Without dead ends: 6658 [2021-01-06 20:33:48,591 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 20:33:48,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6658 states. [2021-01-06 20:33:49,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6658 to 6656. [2021-01-06 20:33:49,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6656 states. [2021-01-06 20:33:49,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6656 states to 6656 states and 9031 transitions. [2021-01-06 20:33:49,633 INFO L78 Accepts]: Start accepts. Automaton has 6656 states and 9031 transitions. Word has length 63 [2021-01-06 20:33:49,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:33:49,634 INFO L481 AbstractCegarLoop]: Abstraction has 6656 states and 9031 transitions. [2021-01-06 20:33:49,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:33:49,634 INFO L276 IsEmpty]: Start isEmpty. Operand 6656 states and 9031 transitions. [2021-01-06 20:33:49,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-01-06 20:33:49,636 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:33:49,636 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] [2021-01-06 20:33:49,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-01-06 20:33:49,637 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:33:49,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:33:49,637 INFO L82 PathProgramCache]: Analyzing trace with hash -424034558, now seen corresponding path program 1 times [2021-01-06 20:33:49,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:33:49,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461118077] [2021-01-06 20:33:49,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:33:49,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:33:50,535 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 20:33:50,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461118077] [2021-01-06 20:33:50,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:33:50,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-01-06 20:33:50,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029924117] [2021-01-06 20:33:50,537 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-06 20:33:50,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:33:50,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-06 20:33:50,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=447, Unknown=0, NotChecked=0, Total=506 [2021-01-06 20:33:50,537 INFO L87 Difference]: Start difference. First operand 6656 states and 9031 transitions. Second operand 23 states. [2021-01-06 20:33:50,813 WARN L197 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2021-01-06 20:33:51,886 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2021-01-06 20:33:52,139 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2021-01-06 20:33:52,602 WARN L197 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2021-01-06 20:33:52,923 WARN L197 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 86 [2021-01-06 20:33:53,089 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2021-01-06 20:33:53,322 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2021-01-06 20:33:53,596 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2021-01-06 20:33:53,861 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2021-01-06 20:34:02,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:34:02,057 INFO L93 Difference]: Finished difference Result 21942 states and 30142 transitions. [2021-01-06 20:34:02,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-01-06 20:34:02,058 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 64 [2021-01-06 20:34:02,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:34:02,077 INFO L225 Difference]: With dead ends: 21942 [2021-01-06 20:34:02,078 INFO L226 Difference]: Without dead ends: 21560 [2021-01-06 20:34:02,082 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=380, Invalid=1600, Unknown=0, NotChecked=0, Total=1980 [2021-01-06 20:34:02,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21560 states. [2021-01-06 20:34:03,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21560 to 6638. [2021-01-06 20:34:03,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6638 states. [2021-01-06 20:34:03,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6638 states to 6638 states and 9006 transitions. [2021-01-06 20:34:03,255 INFO L78 Accepts]: Start accepts. Automaton has 6638 states and 9006 transitions. Word has length 64 [2021-01-06 20:34:03,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:34:03,255 INFO L481 AbstractCegarLoop]: Abstraction has 6638 states and 9006 transitions. [2021-01-06 20:34:03,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2021-01-06 20:34:03,257 INFO L276 IsEmpty]: Start isEmpty. Operand 6638 states and 9006 transitions. [2021-01-06 20:34:03,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-01-06 20:34:03,259 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:34:03,259 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:34:03,260 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-01-06 20:34:03,260 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:34:03,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:34:03,260 INFO L82 PathProgramCache]: Analyzing trace with hash 250019910, now seen corresponding path program 1 times [2021-01-06 20:34:03,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:34:03,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855755914] [2021-01-06 20:34:03,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:34:03,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:34:04,313 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 20:34:04,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855755914] [2021-01-06 20:34:04,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:34:04,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-01-06 20:34:04,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259976364] [2021-01-06 20:34:04,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-06 20:34:04,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:34:04,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-06 20:34:04,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=454, Unknown=0, NotChecked=0, Total=506 [2021-01-06 20:34:04,316 INFO L87 Difference]: Start difference. First operand 6638 states and 9006 transitions. Second operand 23 states. [2021-01-06 20:34:04,678 WARN L197 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 86 [2021-01-06 20:34:05,617 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2021-01-06 20:34:05,803 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2021-01-06 20:34:06,308 WARN L197 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2021-01-06 20:34:06,692 WARN L197 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2021-01-06 20:34:07,384 WARN L197 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 92 [2021-01-06 20:34:07,886 WARN L197 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 100 [2021-01-06 20:34:08,115 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2021-01-06 20:34:08,420 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2021-01-06 20:34:08,763 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2021-01-06 20:34:09,097 WARN L197 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2021-01-06 20:34:09,421 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2021-01-06 20:34:09,876 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2021-01-06 20:34:10,172 WARN L197 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2021-01-06 20:34:10,390 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36 [2021-01-06 20:34:12,683 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 32 [2021-01-06 20:34:19,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:34:19,637 INFO L93 Difference]: Finished difference Result 28856 states and 39681 transitions. [2021-01-06 20:34:19,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-01-06 20:34:19,638 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 64 [2021-01-06 20:34:19,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:34:19,671 INFO L225 Difference]: With dead ends: 28856 [2021-01-06 20:34:19,671 INFO L226 Difference]: Without dead ends: 28474 [2021-01-06 20:34:19,678 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=476, Invalid=1974, Unknown=0, NotChecked=0, Total=2450 [2021-01-06 20:34:19,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28474 states. [2021-01-06 20:34:21,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28474 to 6620. [2021-01-06 20:34:21,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6620 states. [2021-01-06 20:34:21,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6620 states to 6620 states and 8981 transitions. [2021-01-06 20:34:21,081 INFO L78 Accepts]: Start accepts. Automaton has 6620 states and 8981 transitions. Word has length 64 [2021-01-06 20:34:21,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:34:21,081 INFO L481 AbstractCegarLoop]: Abstraction has 6620 states and 8981 transitions. [2021-01-06 20:34:21,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2021-01-06 20:34:21,081 INFO L276 IsEmpty]: Start isEmpty. Operand 6620 states and 8981 transitions. [2021-01-06 20:34:21,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-01-06 20:34:21,084 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:34:21,084 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] [2021-01-06 20:34:21,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-01-06 20:34:21,084 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:34:21,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:34:21,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1940234754, now seen corresponding path program 1 times [2021-01-06 20:34:21,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:34:21,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618264084] [2021-01-06 20:34:21,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:34:21,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:34:22,192 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 20:34:22,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618264084] [2021-01-06 20:34:22,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:34:22,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-01-06 20:34:22,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605975040] [2021-01-06 20:34:22,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-06 20:34:22,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:34:22,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-06 20:34:22,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=454, Unknown=0, NotChecked=0, Total=506 [2021-01-06 20:34:22,199 INFO L87 Difference]: Start difference. First operand 6620 states and 8981 transitions. Second operand 23 states. [2021-01-06 20:34:22,496 WARN L197 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 84 [2021-01-06 20:34:22,902 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 31 [2021-01-06 20:34:23,057 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2021-01-06 20:34:23,219 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2021-01-06 20:34:23,373 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 31 [2021-01-06 20:34:23,635 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 36 [2021-01-06 20:34:23,835 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2021-01-06 20:34:24,293 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2021-01-06 20:34:24,627 WARN L197 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2021-01-06 20:34:25,247 WARN L197 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 84 [2021-01-06 20:34:25,683 WARN L197 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 94 [2021-01-06 20:34:25,928 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2021-01-06 20:34:26,259 WARN L197 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2021-01-06 20:34:26,819 WARN L197 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2021-01-06 20:34:27,109 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2021-01-06 20:34:27,484 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2021-01-06 20:34:27,677 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2021-01-06 20:34:27,940 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2021-01-06 20:34:28,201 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 39 [2021-01-06 20:34:28,655 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2021-01-06 20:34:28,826 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2021-01-06 20:34:31,896 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2021-01-06 20:34:32,369 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 35 [2021-01-06 20:34:33,552 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2021-01-06 20:34:39,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:34:39,508 INFO L93 Difference]: Finished difference Result 23967 states and 32915 transitions. [2021-01-06 20:34:39,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-01-06 20:34:39,510 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 64 [2021-01-06 20:34:39,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:34:39,536 INFO L225 Difference]: With dead ends: 23967 [2021-01-06 20:34:39,536 INFO L226 Difference]: Without dead ends: 23585 [2021-01-06 20:34:39,542 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=446, Invalid=2206, Unknown=0, NotChecked=0, Total=2652 [2021-01-06 20:34:39,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23585 states. [2021-01-06 20:34:41,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23585 to 6632. [2021-01-06 20:34:41,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6632 states. [2021-01-06 20:34:41,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6632 states to 6632 states and 8996 transitions. [2021-01-06 20:34:41,198 INFO L78 Accepts]: Start accepts. Automaton has 6632 states and 8996 transitions. Word has length 64 [2021-01-06 20:34:41,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:34:41,198 INFO L481 AbstractCegarLoop]: Abstraction has 6632 states and 8996 transitions. [2021-01-06 20:34:41,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2021-01-06 20:34:41,199 INFO L276 IsEmpty]: Start isEmpty. Operand 6632 states and 8996 transitions. [2021-01-06 20:34:41,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-01-06 20:34:41,201 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:34:41,201 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] [2021-01-06 20:34:41,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-01-06 20:34:41,201 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:34:41,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:34:41,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1380487795, now seen corresponding path program 1 times [2021-01-06 20:34:41,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:34:41,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692785384] [2021-01-06 20:34:41,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:34:41,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:34:41,266 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 20:34:41,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692785384] [2021-01-06 20:34:41,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:34:41,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:34:41,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503585976] [2021-01-06 20:34:41,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:34:41,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:34:41,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:34:41,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:34:41,268 INFO L87 Difference]: Start difference. First operand 6632 states and 8996 transitions. Second operand 3 states. [2021-01-06 20:34:43,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:34:43,447 INFO L93 Difference]: Finished difference Result 12107 states and 16514 transitions. [2021-01-06 20:34:43,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:34:43,448 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2021-01-06 20:34:43,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:34:43,460 INFO L225 Difference]: With dead ends: 12107 [2021-01-06 20:34:43,460 INFO L226 Difference]: Without dead ends: 9607 [2021-01-06 20:34:43,465 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 20:34:43,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9607 states. [2021-01-06 20:34:45,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9607 to 6532. [2021-01-06 20:34:45,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6532 states. [2021-01-06 20:34:45,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6532 states to 6532 states and 8850 transitions. [2021-01-06 20:34:45,105 INFO L78 Accepts]: Start accepts. Automaton has 6532 states and 8850 transitions. Word has length 64 [2021-01-06 20:34:45,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:34:45,105 INFO L481 AbstractCegarLoop]: Abstraction has 6532 states and 8850 transitions. [2021-01-06 20:34:45,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:34:45,106 INFO L276 IsEmpty]: Start isEmpty. Operand 6532 states and 8850 transitions. [2021-01-06 20:34:45,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-01-06 20:34:45,107 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:34:45,107 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] [2021-01-06 20:34:45,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-01-06 20:34:45,107 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:34:45,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:34:45,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1914859187, now seen corresponding path program 1 times [2021-01-06 20:34:45,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:34:45,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166732494] [2021-01-06 20:34:45,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:34:45,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:34:45,143 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 20:34:45,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166732494] [2021-01-06 20:34:45,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:34:45,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:34:45,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638888465] [2021-01-06 20:34:45,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:34:45,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:34:45,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:34:45,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:34:45,148 INFO L87 Difference]: Start difference. First operand 6532 states and 8850 transitions. Second operand 3 states. [2021-01-06 20:34:47,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:34:47,747 INFO L93 Difference]: Finished difference Result 11971 states and 16310 transitions. [2021-01-06 20:34:47,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:34:47,748 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2021-01-06 20:34:47,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:34:47,759 INFO L225 Difference]: With dead ends: 11971 [2021-01-06 20:34:47,759 INFO L226 Difference]: Without dead ends: 9437 [2021-01-06 20:34:47,763 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 20:34:47,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9437 states. [2021-01-06 20:34:49,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9437 to 6362. [2021-01-06 20:34:49,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6362 states. [2021-01-06 20:34:49,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6362 states to 6362 states and 8618 transitions. [2021-01-06 20:34:49,377 INFO L78 Accepts]: Start accepts. Automaton has 6362 states and 8618 transitions. Word has length 64 [2021-01-06 20:34:49,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:34:49,377 INFO L481 AbstractCegarLoop]: Abstraction has 6362 states and 8618 transitions. [2021-01-06 20:34:49,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:34:49,377 INFO L276 IsEmpty]: Start isEmpty. Operand 6362 states and 8618 transitions. [2021-01-06 20:34:49,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-01-06 20:34:49,379 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:34:49,379 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:34:49,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-01-06 20:34:49,379 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:34:49,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:34:49,379 INFO L82 PathProgramCache]: Analyzing trace with hash -1138559632, now seen corresponding path program 1 times [2021-01-06 20:34:49,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:34:49,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941819409] [2021-01-06 20:34:49,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:34:49,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:34:50,109 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 20:34:50,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941819409] [2021-01-06 20:34:50,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:34:50,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-01-06 20:34:50,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668756648] [2021-01-06 20:34:50,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-06 20:34:50,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:34:50,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-06 20:34:50,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2021-01-06 20:34:50,119 INFO L87 Difference]: Start difference. First operand 6362 states and 8618 transitions. Second operand 17 states. [2021-01-06 20:34:50,945 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 43 [2021-01-06 20:34:51,208 WARN L197 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2021-01-06 20:34:51,424 WARN L197 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2021-01-06 20:34:51,667 WARN L197 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2021-01-06 20:34:51,901 WARN L197 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2021-01-06 20:34:52,157 WARN L197 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2021-01-06 20:34:52,317 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2021-01-06 20:34:52,601 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2021-01-06 20:34:52,801 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2021-01-06 20:34:52,987 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2021-01-06 20:34:53,204 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2021-01-06 20:34:53,425 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2021-01-06 20:34:53,733 WARN L197 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2021-01-06 20:34:53,887 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2021-01-06 20:34:54,148 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2021-01-06 20:34:54,347 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2021-01-06 20:34:54,566 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2021-01-06 20:34:54,830 WARN L197 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2021-01-06 20:35:03,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:35:03,900 INFO L93 Difference]: Finished difference Result 24658 states and 33764 transitions. [2021-01-06 20:35:03,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-01-06 20:35:03,901 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 65 [2021-01-06 20:35:03,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:35:03,930 INFO L225 Difference]: With dead ends: 24658 [2021-01-06 20:35:03,930 INFO L226 Difference]: Without dead ends: 23570 [2021-01-06 20:35:03,945 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=441, Invalid=1629, Unknown=0, NotChecked=0, Total=2070 [2021-01-06 20:35:03,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23570 states. [2021-01-06 20:35:06,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23570 to 6300. [2021-01-06 20:35:06,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6300 states. [2021-01-06 20:35:06,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6300 states to 6300 states and 8535 transitions. [2021-01-06 20:35:06,079 INFO L78 Accepts]: Start accepts. Automaton has 6300 states and 8535 transitions. Word has length 65 [2021-01-06 20:35:06,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:35:06,079 INFO L481 AbstractCegarLoop]: Abstraction has 6300 states and 8535 transitions. [2021-01-06 20:35:06,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-01-06 20:35:06,079 INFO L276 IsEmpty]: Start isEmpty. Operand 6300 states and 8535 transitions. [2021-01-06 20:35:06,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-01-06 20:35:06,081 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:35:06,081 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] [2021-01-06 20:35:06,081 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-01-06 20:35:06,081 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:35:06,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:35:06,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1339466768, now seen corresponding path program 1 times [2021-01-06 20:35:06,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:35:06,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747191112] [2021-01-06 20:35:06,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:35:06,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:35:07,166 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 20:35:07,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747191112] [2021-01-06 20:35:07,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:35:07,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-01-06 20:35:07,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494922155] [2021-01-06 20:35:07,167 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-01-06 20:35:07,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:35:07,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-01-06 20:35:07,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2021-01-06 20:35:07,168 INFO L87 Difference]: Start difference. First operand 6300 states and 8535 transitions. Second operand 18 states. [2021-01-06 20:35:07,336 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 38 [2021-01-06 20:35:07,627 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 32 [2021-01-06 20:35:07,792 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2021-01-06 20:35:08,014 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 34 [2021-01-06 20:35:08,229 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2021-01-06 20:35:08,530 WARN L197 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2021-01-06 20:35:08,789 WARN L197 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 53 [2021-01-06 20:35:09,422 WARN L197 SmtUtils]: Spent 508.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 73 [2021-01-06 20:35:10,070 WARN L197 SmtUtils]: Spent 593.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 84 [2021-01-06 20:35:10,350 WARN L197 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-01-06 20:35:10,784 WARN L197 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-01-06 20:35:10,929 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2021-01-06 20:35:11,259 WARN L197 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2021-01-06 20:35:11,678 WARN L197 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2021-01-06 20:35:12,173 WARN L197 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 63 [2021-01-06 20:35:12,412 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2021-01-06 20:35:12,922 WARN L197 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 61 [2021-01-06 20:35:13,248 WARN L197 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 62 [2021-01-06 20:35:13,512 WARN L197 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2021-01-06 20:35:13,819 WARN L197 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2021-01-06 20:35:14,072 WARN L197 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2021-01-06 20:35:14,372 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 37 [2021-01-06 20:35:14,712 WARN L197 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 38 [2021-01-06 20:35:16,305 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2021-01-06 20:35:27,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:35:27,355 INFO L93 Difference]: Finished difference Result 26181 states and 35896 transitions. [2021-01-06 20:35:27,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-01-06 20:35:27,356 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 65 [2021-01-06 20:35:27,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:35:27,384 INFO L225 Difference]: With dead ends: 26181 [2021-01-06 20:35:27,384 INFO L226 Difference]: Without dead ends: 25571 [2021-01-06 20:35:27,391 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=448, Invalid=1532, Unknown=0, NotChecked=0, Total=1980 [2021-01-06 20:35:27,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25571 states. [2021-01-06 20:35:29,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25571 to 6242. [2021-01-06 20:35:29,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6242 states. [2021-01-06 20:35:29,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6242 states to 6242 states and 8458 transitions. [2021-01-06 20:35:29,625 INFO L78 Accepts]: Start accepts. Automaton has 6242 states and 8458 transitions. Word has length 65 [2021-01-06 20:35:29,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:35:29,626 INFO L481 AbstractCegarLoop]: Abstraction has 6242 states and 8458 transitions. [2021-01-06 20:35:29,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-01-06 20:35:29,626 INFO L276 IsEmpty]: Start isEmpty. Operand 6242 states and 8458 transitions. [2021-01-06 20:35:29,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-01-06 20:35:29,628 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:35:29,629 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] [2021-01-06 20:35:29,629 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-01-06 20:35:29,629 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:35:29,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:35:29,629 INFO L82 PathProgramCache]: Analyzing trace with hash -427633856, now seen corresponding path program 1 times [2021-01-06 20:35:29,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:35:29,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464738906] [2021-01-06 20:35:29,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:35:29,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:35:29,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:35:29,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464738906] [2021-01-06 20:35:29,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:35:29,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 20:35:29,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697880504] [2021-01-06 20:35:29,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 20:35:29,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:35:29,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 20:35:29,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-01-06 20:35:29,720 INFO L87 Difference]: Start difference. First operand 6242 states and 8458 transitions. Second operand 5 states. [2021-01-06 20:35:31,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:35:31,790 INFO L93 Difference]: Finished difference Result 6248 states and 8461 transitions. [2021-01-06 20:35:31,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 20:35:31,791 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2021-01-06 20:35:31,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:35:31,796 INFO L225 Difference]: With dead ends: 6248 [2021-01-06 20:35:31,796 INFO L226 Difference]: Without dead ends: 5868 [2021-01-06 20:35:31,797 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 20:35:31,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5868 states. [2021-01-06 20:35:33,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5868 to 5864. [2021-01-06 20:35:33,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5864 states. [2021-01-06 20:35:33,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5864 states to 5864 states and 7962 transitions. [2021-01-06 20:35:33,794 INFO L78 Accepts]: Start accepts. Automaton has 5864 states and 7962 transitions. Word has length 68 [2021-01-06 20:35:33,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:35:33,794 INFO L481 AbstractCegarLoop]: Abstraction has 5864 states and 7962 transitions. [2021-01-06 20:35:33,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 20:35:33,794 INFO L276 IsEmpty]: Start isEmpty. Operand 5864 states and 7962 transitions. [2021-01-06 20:35:33,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-01-06 20:35:33,796 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:35:33,797 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] [2021-01-06 20:35:33,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-01-06 20:35:33,797 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:35:33,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:35:33,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1513353753, now seen corresponding path program 1 times [2021-01-06 20:35:33,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:35:33,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153163766] [2021-01-06 20:35:33,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:35:33,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:35:33,845 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 20:35:33,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153163766] [2021-01-06 20:35:33,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:35:33,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:35:33,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850304797] [2021-01-06 20:35:33,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:35:33,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:35:33,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:35:33,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:35:33,847 INFO L87 Difference]: Start difference. First operand 5864 states and 7962 transitions. Second operand 3 states. [2021-01-06 20:35:38,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:35:38,028 INFO L93 Difference]: Finished difference Result 15889 states and 21668 transitions. [2021-01-06 20:35:38,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:35:38,029 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2021-01-06 20:35:38,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:35:38,040 INFO L225 Difference]: With dead ends: 15889 [2021-01-06 20:35:38,041 INFO L226 Difference]: Without dead ends: 10624 [2021-01-06 20:35:38,046 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 20:35:38,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10624 states. [2021-01-06 20:35:41,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10624 to 9942. [2021-01-06 20:35:41,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9942 states. [2021-01-06 20:35:41,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9942 states to 9942 states and 13474 transitions. [2021-01-06 20:35:41,452 INFO L78 Accepts]: Start accepts. Automaton has 9942 states and 13474 transitions. Word has length 71 [2021-01-06 20:35:41,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:35:41,452 INFO L481 AbstractCegarLoop]: Abstraction has 9942 states and 13474 transitions. [2021-01-06 20:35:41,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:35:41,452 INFO L276 IsEmpty]: Start isEmpty. Operand 9942 states and 13474 transitions. [2021-01-06 20:35:41,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-01-06 20:35:41,525 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:35:41,525 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] [2021-01-06 20:35:41,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-01-06 20:35:41,525 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:35:41,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:35:41,526 INFO L82 PathProgramCache]: Analyzing trace with hash 87467842, now seen corresponding path program 1 times [2021-01-06 20:35:41,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:35:41,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750668067] [2021-01-06 20:35:41,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:35:41,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:35:41,587 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 20:35:41,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750668067] [2021-01-06 20:35:41,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:35:41,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:35:41,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782436673] [2021-01-06 20:35:41,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:35:41,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:35:41,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:35:41,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:35:41,589 INFO L87 Difference]: Start difference. First operand 9942 states and 13474 transitions. Second operand 3 states. [2021-01-06 20:35:48,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:35:48,162 INFO L93 Difference]: Finished difference Result 27618 states and 37414 transitions. [2021-01-06 20:35:48,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:35:48,163 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2021-01-06 20:35:48,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:35:48,185 INFO L225 Difference]: With dead ends: 27618 [2021-01-06 20:35:48,185 INFO L226 Difference]: Without dead ends: 18275 [2021-01-06 20:35:48,193 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 20:35:48,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18275 states. [2021-01-06 20:35:54,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18275 to 16913. [2021-01-06 20:35:54,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16913 states. [2021-01-06 20:35:54,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16913 states to 16913 states and 22763 transitions. [2021-01-06 20:35:54,343 INFO L78 Accepts]: Start accepts. Automaton has 16913 states and 22763 transitions. Word has length 72 [2021-01-06 20:35:54,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:35:54,344 INFO L481 AbstractCegarLoop]: Abstraction has 16913 states and 22763 transitions. [2021-01-06 20:35:54,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:35:54,344 INFO L276 IsEmpty]: Start isEmpty. Operand 16913 states and 22763 transitions. [2021-01-06 20:35:54,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-01-06 20:35:54,346 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:35:54,346 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] [2021-01-06 20:35:54,346 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-01-06 20:35:54,346 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:35:54,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:35:54,347 INFO L82 PathProgramCache]: Analyzing trace with hash -1178358807, now seen corresponding path program 1 times [2021-01-06 20:35:54,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:35:54,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937438669] [2021-01-06 20:35:54,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:35:54,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:35:54,405 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 20:35:54,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937438669] [2021-01-06 20:35:54,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:35:54,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:35:54,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181144578] [2021-01-06 20:35:54,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:35:54,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:35:54,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:35:54,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:35:54,408 INFO L87 Difference]: Start difference. First operand 16913 states and 22763 transitions. Second operand 3 states. [2021-01-06 20:36:06,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:36:06,097 INFO L93 Difference]: Finished difference Result 47317 states and 63393 transitions. [2021-01-06 20:36:06,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:36:06,098 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2021-01-06 20:36:06,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:36:06,132 INFO L225 Difference]: With dead ends: 47317 [2021-01-06 20:36:06,132 INFO L226 Difference]: Without dead ends: 30879 [2021-01-06 20:36:06,145 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 20:36:06,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30879 states. [2021-01-06 20:36:16,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30879 to 28389. [2021-01-06 20:36:16,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28389 states. [2021-01-06 20:36:16,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28389 states to 28389 states and 37789 transitions. [2021-01-06 20:36:16,893 INFO L78 Accepts]: Start accepts. Automaton has 28389 states and 37789 transitions. Word has length 74 [2021-01-06 20:36:16,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:36:16,894 INFO L481 AbstractCegarLoop]: Abstraction has 28389 states and 37789 transitions. [2021-01-06 20:36:16,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:36:16,894 INFO L276 IsEmpty]: Start isEmpty. Operand 28389 states and 37789 transitions. [2021-01-06 20:36:16,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-01-06 20:36:16,895 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:36:16,896 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 20:36:16,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-01-06 20:36:16,896 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:36:16,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:36:16,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1504202340, now seen corresponding path program 1 times [2021-01-06 20:36:16,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:36:16,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231046171] [2021-01-06 20:36:16,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:36:16,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:36:16,982 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 20:36:16,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231046171] [2021-01-06 20:36:16,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:36:16,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 20:36:16,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026904385] [2021-01-06 20:36:16,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 20:36:16,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:36:16,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 20:36:16,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-06 20:36:16,984 INFO L87 Difference]: Start difference. First operand 28389 states and 37789 transitions. Second operand 6 states. [2021-01-06 20:36:41,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:36:41,069 INFO L93 Difference]: Finished difference Result 57869 states and 75871 transitions. [2021-01-06 20:36:41,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 20:36:41,070 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 75 [2021-01-06 20:36:41,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:36:41,139 INFO L225 Difference]: With dead ends: 57869 [2021-01-06 20:36:41,139 INFO L226 Difference]: Without dead ends: 57867 [2021-01-06 20:36:41,153 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 20:36:41,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57867 states. [2021-01-06 20:36:53,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57867 to 30909. [2021-01-06 20:36:53,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30909 states. [2021-01-06 20:36:54,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30909 states to 30909 states and 40309 transitions. [2021-01-06 20:36:54,003 INFO L78 Accepts]: Start accepts. Automaton has 30909 states and 40309 transitions. Word has length 75 [2021-01-06 20:36:54,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:36:54,004 INFO L481 AbstractCegarLoop]: Abstraction has 30909 states and 40309 transitions. [2021-01-06 20:36:54,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 20:36:54,004 INFO L276 IsEmpty]: Start isEmpty. Operand 30909 states and 40309 transitions. [2021-01-06 20:36:54,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-01-06 20:36:54,005 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:36:54,005 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 20:36:54,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-01-06 20:36:54,006 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:36:54,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:36:54,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1668309570, now seen corresponding path program 1 times [2021-01-06 20:36:54,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:36:54,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417022007] [2021-01-06 20:36:54,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:36:54,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:36:54,063 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 20:36:54,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417022007] [2021-01-06 20:36:54,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:36:54,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:36:54,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073767753] [2021-01-06 20:36:54,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:36:54,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:36:54,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:36:54,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:36:54,065 INFO L87 Difference]: Start difference. First operand 30909 states and 40309 transitions. Second operand 3 states.