/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+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 20:32:44,554 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 20:32:44,557 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 20:32:44,601 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 20:32:44,602 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 20:32:44,604 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 20:32:44,606 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 20:32:44,611 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 20:32:44,614 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 20:32:44,616 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 20:32:44,619 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 20:32:44,622 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 20:32:44,623 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 20:32:44,629 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 20:32:44,631 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 20:32:44,634 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 20:32:44,650 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 20:32:44,653 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 20:32:44,659 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 20:32:44,668 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 20:32:44,671 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 20:32:44,672 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 20:32:44,675 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 20:32:44,678 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 20:32:44,684 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 20:32:44,695 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 20:32:44,696 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 20:32:44,698 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 20:32:44,699 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 20:32:44,701 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 20:32:44,701 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 20:32:44,702 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 20:32:44,709 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 20:32:44,709 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 20:32:44,710 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 20:32:44,711 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 20:32:44,712 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 20:32:44,760 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 20:32:44,761 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 20:32:44,764 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 20:32:44,765 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 20:32:44,765 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 20:32:44,765 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 20:32:44,765 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 20:32:44,766 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 20:32:44,766 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 20:32:44,766 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 20:32:44,767 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 20:32:44,767 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 20:32:44,767 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 20:32:44,768 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 20:32:44,768 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 20:32:44,768 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 20:32:44,768 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 20:32:44,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 20:32:44,769 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 20:32:44,769 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 20:32:44,769 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 20:32:44,769 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 20:32:44,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 20:32:44,770 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 20:32:44,770 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 20:32:44,770 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 20:32:45,201 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 20:32:45,232 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 20:32:45,235 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 20:32:45,237 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 20:32:45,238 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 20:32:45,240 INFO L432 ainManager$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+cfa-reducer.c [2021-01-06 20:32:45,325 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/90a7012eb/fcb0a9a6f5624667aa2bf584cf1518c8/FLAGd9804ba65 [2021-01-06 20:32:45,963 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 20:32:45,963 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+cfa-reducer.c [2021-01-06 20:32:45,982 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/90a7012eb/fcb0a9a6f5624667aa2bf584cf1518c8/FLAGd9804ba65 [2021-01-06 20:32:46,291 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/90a7012eb/fcb0a9a6f5624667aa2bf584cf1518c8 [2021-01-06 20:32:46,294 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 20:32:46,297 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 20:32:46,299 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 20:32:46,299 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 20:32:46,303 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 20:32:46,304 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 08:32:46" (1/1) ... [2021-01-06 20:32:46,305 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42f9f428 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:32:46, skipping insertion in model container [2021-01-06 20:32:46,305 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 08:32:46" (1/1) ... [2021-01-06 20:32:46,315 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 20:32:46,348 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[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~0,] 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__m2~0,] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~0,] 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__m3~0,] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~0,] 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~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_6163~0,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,] [2021-01-06 20:32:46,546 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+cfa-reducer.c[3969,3982] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] 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_0~0,] 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[~node3____CPAchecker_TMP_0~0,] 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_0~0,] 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[~node2____CPAchecker_TMP_0~0,] 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_0~0,] 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[~node1____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_6228~0,GLOBAL] [2021-01-06 20:32:46,583 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 20:32:46,610 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[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~0,] 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__m2~0,] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~0,] 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__m3~0,] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~0,] 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~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_6163~0,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,] [2021-01-06 20:32:46,695 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+cfa-reducer.c[3969,3982] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] 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_0~0,] 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[~node3____CPAchecker_TMP_0~0,] 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_0~0,] 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[~node2____CPAchecker_TMP_0~0,] 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_0~0,] 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[~node1____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_6228~0,GLOBAL] [2021-01-06 20:32:46,715 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 20:32:46,739 INFO L208 MainTranslator]: Completed translation [2021-01-06 20:32:46,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:32:46 WrapperNode [2021-01-06 20:32:46,740 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 20:32:46,742 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 20:32:46,742 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 20:32:46,742 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 20:32:46,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:32:46" (1/1) ... [2021-01-06 20:32:46,763 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:32:46" (1/1) ... [2021-01-06 20:32:46,798 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 20:32:46,799 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 20:32:46,799 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 20:32:46,799 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 20:32:46,815 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:32:46" (1/1) ... [2021-01-06 20:32:46,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:32:46" (1/1) ... [2021-01-06 20:32:46,819 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:32:46" (1/1) ... [2021-01-06 20:32:46,819 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:32:46" (1/1) ... [2021-01-06 20:32:46,826 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:32:46" (1/1) ... [2021-01-06 20:32:46,831 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:32:46" (1/1) ... [2021-01-06 20:32:46,835 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:32:46" (1/1) ... [2021-01-06 20:32:46,840 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 20:32:46,841 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 20:32:46,841 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 20:32:46,841 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 20:32:46,843 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:32:46" (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 20:32:46,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 20:32:46,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 20:32:46,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 20:32:46,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 20:32:47,798 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 20:32:47,801 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-01-06 20:32:47,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 08:32:47 BoogieIcfgContainer [2021-01-06 20:32:47,804 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 20:32:47,806 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 20:32:47,807 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 20:32:47,811 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 20:32:47,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 08:32:46" (1/3) ... [2021-01-06 20:32:47,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7849ee0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 08:32:47, skipping insertion in model container [2021-01-06 20:32:47,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:32:46" (2/3) ... [2021-01-06 20:32:47,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7849ee0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 08:32:47, skipping insertion in model container [2021-01-06 20:32:47,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 08:32:47" (3/3) ... [2021-01-06 20:32:47,818 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2021-01-06 20:32:47,826 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 20:32:47,831 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 20:32:47,851 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 20:32:47,878 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 20:32:47,878 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 20:32:47,879 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 20:32:47,879 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 20:32:47,879 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 20:32:47,879 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 20:32:47,879 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 20:32:47,879 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 20:32:47,895 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states. [2021-01-06 20:32:47,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-01-06 20:32:47,903 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:32:47,904 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] [2021-01-06 20:32:47,904 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:32:47,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:32:47,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1485847759, now seen corresponding path program 1 times [2021-01-06 20:32:47,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:32:47,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967910045] [2021-01-06 20:32:47,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:32:48,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:32:48,272 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 20:32:48,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967910045] [2021-01-06 20:32:48,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:32:48,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:32:48,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212696473] [2021-01-06 20:32:48,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:32:48,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:32:48,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:32:48,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:32:48,307 INFO L87 Difference]: Start difference. First operand 80 states. Second operand 3 states. [2021-01-06 20:32:48,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:32:48,442 INFO L93 Difference]: Finished difference Result 184 states and 294 transitions. [2021-01-06 20:32:48,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:32:48,446 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2021-01-06 20:32:48,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:32:48,478 INFO L225 Difference]: With dead ends: 184 [2021-01-06 20:32:48,479 INFO L226 Difference]: Without dead ends: 118 [2021-01-06 20:32:48,485 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 20:32:48,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-01-06 20:32:48,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 116. [2021-01-06 20:32:48,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2021-01-06 20:32:48,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 172 transitions. [2021-01-06 20:32:48,572 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 172 transitions. Word has length 37 [2021-01-06 20:32:48,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:32:48,573 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 172 transitions. [2021-01-06 20:32:48,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:32:48,574 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 172 transitions. [2021-01-06 20:32:48,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-01-06 20:32:48,576 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:32:48,577 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] [2021-01-06 20:32:48,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 20:32:48,578 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:32:48,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:32:48,581 INFO L82 PathProgramCache]: Analyzing trace with hash -498229074, now seen corresponding path program 1 times [2021-01-06 20:32:48,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:32:48,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530424290] [2021-01-06 20:32:48,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:32:48,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:32:48,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:32:48,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530424290] [2021-01-06 20:32:48,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:32:48,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:32:48,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643369021] [2021-01-06 20:32:48,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:32:48,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:32:48,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:32:48,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:32:48,710 INFO L87 Difference]: Start difference. First operand 116 states and 172 transitions. Second operand 3 states. [2021-01-06 20:32:48,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:32:48,760 INFO L93 Difference]: Finished difference Result 276 states and 424 transitions. [2021-01-06 20:32:48,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:32:48,761 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2021-01-06 20:32:48,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:32:48,764 INFO L225 Difference]: With dead ends: 276 [2021-01-06 20:32:48,764 INFO L226 Difference]: Without dead ends: 180 [2021-01-06 20:32:48,765 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 20:32:48,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-01-06 20:32:48,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 178. [2021-01-06 20:32:48,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2021-01-06 20:32:48,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 269 transitions. [2021-01-06 20:32:48,791 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 269 transitions. Word has length 38 [2021-01-06 20:32:48,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:32:48,792 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 269 transitions. [2021-01-06 20:32:48,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:32:48,792 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 269 transitions. [2021-01-06 20:32:48,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-01-06 20:32:48,794 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:32:48,794 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] [2021-01-06 20:32:48,794 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 20:32:48,794 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:32:48,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:32:48,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1494403672, now seen corresponding path program 1 times [2021-01-06 20:32:48,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:32:48,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493286615] [2021-01-06 20:32:48,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:32:48,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:32:49,001 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 20:32:49,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493286615] [2021-01-06 20:32:49,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:32:49,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 20:32:49,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974953505] [2021-01-06 20:32:49,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 20:32:49,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:32:49,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 20:32:49,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-01-06 20:32:49,006 INFO L87 Difference]: Start difference. First operand 178 states and 269 transitions. Second operand 5 states. [2021-01-06 20:32:49,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:32:49,138 INFO L93 Difference]: Finished difference Result 596 states and 924 transitions. [2021-01-06 20:32:49,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 20:32:49,138 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2021-01-06 20:32:49,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:32:49,143 INFO L225 Difference]: With dead ends: 596 [2021-01-06 20:32:49,143 INFO L226 Difference]: Without dead ends: 438 [2021-01-06 20:32:49,145 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 20:32:49,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2021-01-06 20:32:49,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 434. [2021-01-06 20:32:49,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2021-01-06 20:32:49,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 669 transitions. [2021-01-06 20:32:49,196 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 669 transitions. Word has length 39 [2021-01-06 20:32:49,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:32:49,197 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 669 transitions. [2021-01-06 20:32:49,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 20:32:49,197 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 669 transitions. [2021-01-06 20:32:49,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-01-06 20:32:49,199 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:32:49,199 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] [2021-01-06 20:32:49,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 20:32:49,200 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:32:49,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:32:49,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1416306171, now seen corresponding path program 1 times [2021-01-06 20:32:49,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:32:49,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490887848] [2021-01-06 20:32:49,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:32:49,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:32:49,276 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 20:32:49,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490887848] [2021-01-06 20:32:49,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:32:49,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:32:49,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939357274] [2021-01-06 20:32:49,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:32:49,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:32:49,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:32:49,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:32:49,283 INFO L87 Difference]: Start difference. First operand 434 states and 669 transitions. Second operand 3 states. [2021-01-06 20:32:49,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:32:49,378 INFO L93 Difference]: Finished difference Result 1130 states and 1751 transitions. [2021-01-06 20:32:49,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:32:49,380 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2021-01-06 20:32:49,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:32:49,384 INFO L225 Difference]: With dead ends: 1130 [2021-01-06 20:32:49,384 INFO L226 Difference]: Without dead ends: 716 [2021-01-06 20:32:49,390 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 20:32:49,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2021-01-06 20:32:49,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 714. [2021-01-06 20:32:49,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 714 states. [2021-01-06 20:32:49,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 1089 transitions. [2021-01-06 20:32:49,468 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 1089 transitions. Word has length 39 [2021-01-06 20:32:49,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:32:49,468 INFO L481 AbstractCegarLoop]: Abstraction has 714 states and 1089 transitions. [2021-01-06 20:32:49,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:32:49,468 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 1089 transitions. [2021-01-06 20:32:49,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-01-06 20:32:49,470 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:32:49,470 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] [2021-01-06 20:32:49,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 20:32:49,471 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:32:49,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:32:49,471 INFO L82 PathProgramCache]: Analyzing trace with hash -1267879647, now seen corresponding path program 1 times [2021-01-06 20:32:49,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:32:49,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266157463] [2021-01-06 20:32:49,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:32:49,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:32:49,570 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 20:32:49,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266157463] [2021-01-06 20:32:49,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:32:49,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 20:32:49,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670911753] [2021-01-06 20:32:49,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 20:32:49,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:32:49,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 20:32:49,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-01-06 20:32:49,573 INFO L87 Difference]: Start difference. First operand 714 states and 1089 transitions. Second operand 6 states. [2021-01-06 20:32:49,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:32:49,988 INFO L93 Difference]: Finished difference Result 2740 states and 4200 transitions. [2021-01-06 20:32:49,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 20:32:49,989 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 41 [2021-01-06 20:32:49,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:32:50,000 INFO L225 Difference]: With dead ends: 2740 [2021-01-06 20:32:50,000 INFO L226 Difference]: Without dead ends: 2046 [2021-01-06 20:32:50,002 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 20:32:50,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2046 states. [2021-01-06 20:32:50,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2046 to 2042. [2021-01-06 20:32:50,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2042 states. [2021-01-06 20:32:50,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2042 states to 2042 states and 3113 transitions. [2021-01-06 20:32:50,193 INFO L78 Accepts]: Start accepts. Automaton has 2042 states and 3113 transitions. Word has length 41 [2021-01-06 20:32:50,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:32:50,193 INFO L481 AbstractCegarLoop]: Abstraction has 2042 states and 3113 transitions. [2021-01-06 20:32:50,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 20:32:50,194 INFO L276 IsEmpty]: Start isEmpty. Operand 2042 states and 3113 transitions. [2021-01-06 20:32:50,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-01-06 20:32:50,195 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:32:50,195 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] [2021-01-06 20:32:50,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-06 20:32:50,196 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:32:50,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:32:50,196 INFO L82 PathProgramCache]: Analyzing trace with hash -938328058, now seen corresponding path program 1 times [2021-01-06 20:32:50,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:32:50,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744992843] [2021-01-06 20:32:50,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:32:50,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:32:50,271 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 20:32:50,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744992843] [2021-01-06 20:32:50,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:32:50,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 20:32:50,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016895385] [2021-01-06 20:32:50,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 20:32:50,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:32:50,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 20:32:50,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 20:32:50,274 INFO L87 Difference]: Start difference. First operand 2042 states and 3113 transitions. Second operand 5 states. [2021-01-06 20:32:50,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:32:50,821 INFO L93 Difference]: Finished difference Result 8186 states and 12493 transitions. [2021-01-06 20:32:50,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 20:32:50,822 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2021-01-06 20:32:50,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:32:50,853 INFO L225 Difference]: With dead ends: 8186 [2021-01-06 20:32:50,853 INFO L226 Difference]: Without dead ends: 6164 [2021-01-06 20:32:50,860 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-01-06 20:32:50,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6164 states. [2021-01-06 20:32:51,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6164 to 4062. [2021-01-06 20:32:51,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4062 states. [2021-01-06 20:32:51,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4062 states to 4062 states and 6061 transitions. [2021-01-06 20:32:51,285 INFO L78 Accepts]: Start accepts. Automaton has 4062 states and 6061 transitions. Word has length 41 [2021-01-06 20:32:51,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:32:51,287 INFO L481 AbstractCegarLoop]: Abstraction has 4062 states and 6061 transitions. [2021-01-06 20:32:51,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 20:32:51,287 INFO L276 IsEmpty]: Start isEmpty. Operand 4062 states and 6061 transitions. [2021-01-06 20:32:51,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-01-06 20:32:51,291 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:32:51,291 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] [2021-01-06 20:32:51,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-06 20:32:51,291 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:32:51,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:32:51,293 INFO L82 PathProgramCache]: Analyzing trace with hash 957144957, now seen corresponding path program 1 times [2021-01-06 20:32:51,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:32:51,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814310361] [2021-01-06 20:32:51,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:32:51,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:32:51,440 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 20:32:51,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814310361] [2021-01-06 20:32:51,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:32:51,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 20:32:51,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286206131] [2021-01-06 20:32:51,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 20:32:51,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:32:51,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 20:32:51,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 20:32:51,443 INFO L87 Difference]: Start difference. First operand 4062 states and 6061 transitions. Second operand 5 states. [2021-01-06 20:32:52,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:32:52,222 INFO L93 Difference]: Finished difference Result 8392 states and 12390 transitions. [2021-01-06 20:32:52,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 20:32:52,223 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2021-01-06 20:32:52,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:32:52,265 INFO L225 Difference]: With dead ends: 8392 [2021-01-06 20:32:52,265 INFO L226 Difference]: Without dead ends: 8390 [2021-01-06 20:32:52,269 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-01-06 20:32:52,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8390 states. [2021-01-06 20:32:52,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8390 to 4350. [2021-01-06 20:32:52,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4350 states. [2021-01-06 20:32:52,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4350 states to 4350 states and 6349 transitions. [2021-01-06 20:32:52,789 INFO L78 Accepts]: Start accepts. Automaton has 4350 states and 6349 transitions. Word has length 42 [2021-01-06 20:32:52,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:32:52,789 INFO L481 AbstractCegarLoop]: Abstraction has 4350 states and 6349 transitions. [2021-01-06 20:32:52,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 20:32:52,790 INFO L276 IsEmpty]: Start isEmpty. Operand 4350 states and 6349 transitions. [2021-01-06 20:32:52,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-01-06 20:32:52,793 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:32:52,794 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] [2021-01-06 20:32:52,794 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-06 20:32:52,794 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:32:52,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:32:52,794 INFO L82 PathProgramCache]: Analyzing trace with hash -382704394, now seen corresponding path program 1 times [2021-01-06 20:32:52,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:32:52,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261992100] [2021-01-06 20:32:52,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:32:52,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:32:52,883 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 20:32:52,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261992100] [2021-01-06 20:32:52,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:32:52,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:32:52,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347158439] [2021-01-06 20:32:52,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:32:52,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:32:52,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:32:52,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:32:52,886 INFO L87 Difference]: Start difference. First operand 4350 states and 6349 transitions. Second operand 3 states. [2021-01-06 20:32:53,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:32:53,523 INFO L93 Difference]: Finished difference Result 10402 states and 15167 transitions. [2021-01-06 20:32:53,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:32:53,524 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2021-01-06 20:32:53,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:32:53,559 INFO L225 Difference]: With dead ends: 10402 [2021-01-06 20:32:53,559 INFO L226 Difference]: Without dead ends: 6072 [2021-01-06 20:32:53,567 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 20:32:53,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6072 states. [2021-01-06 20:32:54,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6072 to 6070. [2021-01-06 20:32:54,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6070 states. [2021-01-06 20:32:54,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6070 states to 6070 states and 8777 transitions. [2021-01-06 20:32:54,169 INFO L78 Accepts]: Start accepts. Automaton has 6070 states and 8777 transitions. Word has length 43 [2021-01-06 20:32:54,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:32:54,170 INFO L481 AbstractCegarLoop]: Abstraction has 6070 states and 8777 transitions. [2021-01-06 20:32:54,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:32:54,170 INFO L276 IsEmpty]: Start isEmpty. Operand 6070 states and 8777 transitions. [2021-01-06 20:32:54,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-01-06 20:32:54,174 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:32:54,174 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:32:54,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-06 20:32:54,174 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:32:54,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:32:54,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1624116797, now seen corresponding path program 1 times [2021-01-06 20:32:54,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:32:54,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137854155] [2021-01-06 20:32:54,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:32:54,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:32:54,369 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-06 20:32:54,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137854155] [2021-01-06 20:32:54,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654547723] [2021-01-06 20:32:54,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 20:32:54,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:32:54,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 11 conjunts are in the unsatisfiable core [2021-01-06 20:32:54,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 20:32:54,684 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-06 20:32:54,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 20:32:54,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 6 [2021-01-06 20:32:54,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960217552] [2021-01-06 20:32:54,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 20:32:54,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:32:54,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 20:32:54,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-01-06 20:32:54,686 INFO L87 Difference]: Start difference. First operand 6070 states and 8777 transitions. Second operand 6 states. [2021-01-06 20:32:55,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:32:55,941 INFO L93 Difference]: Finished difference Result 15037 states and 21837 transitions. [2021-01-06 20:32:55,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 20:32:55,942 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2021-01-06 20:32:55,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:32:55,995 INFO L225 Difference]: With dead ends: 15037 [2021-01-06 20:32:55,995 INFO L226 Difference]: Without dead ends: 10707 [2021-01-06 20:32:56,005 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-01-06 20:32:56,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10707 states. [2021-01-06 20:32:57,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10707 to 10062. [2021-01-06 20:32:57,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10062 states. [2021-01-06 20:32:57,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10062 states to 10062 states and 14433 transitions. [2021-01-06 20:32:57,030 INFO L78 Accepts]: Start accepts. Automaton has 10062 states and 14433 transitions. Word has length 60 [2021-01-06 20:32:57,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:32:57,030 INFO L481 AbstractCegarLoop]: Abstraction has 10062 states and 14433 transitions. [2021-01-06 20:32:57,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 20:32:57,031 INFO L276 IsEmpty]: Start isEmpty. Operand 10062 states and 14433 transitions. [2021-01-06 20:32:57,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-01-06 20:32:57,034 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:32:57,034 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:32:57,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-01-06 20:32:57,248 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:32:57,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:32:57,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1000125924, now seen corresponding path program 1 times [2021-01-06 20:32:57,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:32:57,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782470675] [2021-01-06 20:32:57,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:32:57,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:32:57,315 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-01-06 20:32:57,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782470675] [2021-01-06 20:32:57,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:32:57,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 20:32:57,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100441738] [2021-01-06 20:32:57,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 20:32:57,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:32:57,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 20:32:57,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 20:32:57,318 INFO L87 Difference]: Start difference. First operand 10062 states and 14433 transitions. Second operand 5 states. [2021-01-06 20:32:58,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:32:58,501 INFO L93 Difference]: Finished difference Result 18244 states and 26327 transitions. [2021-01-06 20:32:58,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 20:32:58,502 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2021-01-06 20:32:58,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:32:58,601 INFO L225 Difference]: With dead ends: 18244 [2021-01-06 20:32:58,601 INFO L226 Difference]: Without dead ends: 14612 [2021-01-06 20:32:58,611 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 20:32:58,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14612 states. [2021-01-06 20:32:59,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14612 to 13150. [2021-01-06 20:32:59,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13150 states. [2021-01-06 20:32:59,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13150 states to 13150 states and 18801 transitions. [2021-01-06 20:32:59,894 INFO L78 Accepts]: Start accepts. Automaton has 13150 states and 18801 transitions. Word has length 61 [2021-01-06 20:32:59,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:32:59,895 INFO L481 AbstractCegarLoop]: Abstraction has 13150 states and 18801 transitions. [2021-01-06 20:32:59,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 20:32:59,895 INFO L276 IsEmpty]: Start isEmpty. Operand 13150 states and 18801 transitions. [2021-01-06 20:32:59,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-01-06 20:32:59,898 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:32:59,898 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:32:59,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-01-06 20:32:59,899 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:32:59,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:32:59,899 INFO L82 PathProgramCache]: Analyzing trace with hash -876556853, now seen corresponding path program 1 times [2021-01-06 20:32:59,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:32:59,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967706579] [2021-01-06 20:32:59,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:32:59,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:32:59,963 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:32:59,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967706579] [2021-01-06 20:32:59,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:32:59,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:32:59,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224411079] [2021-01-06 20:32:59,965 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:32:59,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:32:59,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:32:59,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:32:59,966 INFO L87 Difference]: Start difference. First operand 13150 states and 18801 transitions. Second operand 3 states. [2021-01-06 20:33:00,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:33:00,951 INFO L93 Difference]: Finished difference Result 20870 states and 29699 transitions. [2021-01-06 20:33:00,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:33:00,951 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2021-01-06 20:33:00,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:33:00,987 INFO L225 Difference]: With dead ends: 20870 [2021-01-06 20:33:00,987 INFO L226 Difference]: Without dead ends: 13598 [2021-01-06 20:33:00,999 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 20:33:01,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13598 states. [2021-01-06 20:33:01,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13598 to 11651. [2021-01-06 20:33:01,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11651 states. [2021-01-06 20:33:01,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11651 states to 11651 states and 16319 transitions. [2021-01-06 20:33:01,970 INFO L78 Accepts]: Start accepts. Automaton has 11651 states and 16319 transitions. Word has length 61 [2021-01-06 20:33:01,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:33:01,970 INFO L481 AbstractCegarLoop]: Abstraction has 11651 states and 16319 transitions. [2021-01-06 20:33:01,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:33:01,971 INFO L276 IsEmpty]: Start isEmpty. Operand 11651 states and 16319 transitions. [2021-01-06 20:33:01,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-01-06 20:33:01,974 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:33:01,974 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:33:01,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-01-06 20:33:01,975 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:33:01,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:33:01,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1922561508, now seen corresponding path program 1 times [2021-01-06 20:33:01,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:33:01,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814676691] [2021-01-06 20:33:01,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:33:01,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:33:02,021 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:33:02,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814676691] [2021-01-06 20:33:02,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:33:02,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:33:02,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975072346] [2021-01-06 20:33:02,022 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:33:02,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:33:02,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:33:02,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:33:02,023 INFO L87 Difference]: Start difference. First operand 11651 states and 16319 transitions. Second operand 3 states. [2021-01-06 20:33:03,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:33:03,427 INFO L93 Difference]: Finished difference Result 27943 states and 39033 transitions. [2021-01-06 20:33:03,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:33:03,427 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2021-01-06 20:33:03,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:33:03,480 INFO L225 Difference]: With dead ends: 27943 [2021-01-06 20:33:03,480 INFO L226 Difference]: Without dead ends: 19248 [2021-01-06 20:33:03,497 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 20:33:03,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19248 states. [2021-01-06 20:33:04,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19248 to 19197. [2021-01-06 20:33:04,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19197 states. [2021-01-06 20:33:04,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19197 states to 19197 states and 26467 transitions. [2021-01-06 20:33:04,892 INFO L78 Accepts]: Start accepts. Automaton has 19197 states and 26467 transitions. Word has length 61 [2021-01-06 20:33:04,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:33:04,892 INFO L481 AbstractCegarLoop]: Abstraction has 19197 states and 26467 transitions. [2021-01-06 20:33:04,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:33:04,892 INFO L276 IsEmpty]: Start isEmpty. Operand 19197 states and 26467 transitions. [2021-01-06 20:33:04,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-01-06 20:33:04,896 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:33:04,896 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:33:04,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-01-06 20:33:04,897 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:33:04,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:33:04,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1875177684, now seen corresponding path program 1 times [2021-01-06 20:33:04,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:33:04,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023695659] [2021-01-06 20:33:04,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:33:04,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:33:04,976 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-06 20:33:04,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023695659] [2021-01-06 20:33:04,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:33:04,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 20:33:04,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566721985] [2021-01-06 20:33:04,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 20:33:04,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:33:04,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 20:33:04,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-01-06 20:33:04,979 INFO L87 Difference]: Start difference. First operand 19197 states and 26467 transitions. Second operand 6 states. [2021-01-06 20:33:08,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:33:08,111 INFO L93 Difference]: Finished difference Result 65202 states and 89464 transitions. [2021-01-06 20:33:08,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 20:33:08,112 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2021-01-06 20:33:08,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:33:08,202 INFO L225 Difference]: With dead ends: 65202 [2021-01-06 20:33:08,202 INFO L226 Difference]: Without dead ends: 46065 [2021-01-06 20:33:08,235 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 20:33:08,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46065 states. [2021-01-06 20:33:11,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46065 to 45639. [2021-01-06 20:33:11,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45639 states. [2021-01-06 20:33:11,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45639 states to 45639 states and 62277 transitions. [2021-01-06 20:33:11,979 INFO L78 Accepts]: Start accepts. Automaton has 45639 states and 62277 transitions. Word has length 61 [2021-01-06 20:33:11,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:33:11,984 INFO L481 AbstractCegarLoop]: Abstraction has 45639 states and 62277 transitions. [2021-01-06 20:33:11,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 20:33:11,985 INFO L276 IsEmpty]: Start isEmpty. Operand 45639 states and 62277 transitions. [2021-01-06 20:33:11,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-01-06 20:33:11,988 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:33:11,988 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:33:11,989 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-01-06 20:33:11,989 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:33:11,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:33:11,989 INFO L82 PathProgramCache]: Analyzing trace with hash -802284721, now seen corresponding path program 1 times [2021-01-06 20:33:11,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:33:11,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771842812] [2021-01-06 20:33:11,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:33:12,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:33:12,067 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-01-06 20:33:12,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771842812] [2021-01-06 20:33:12,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:33:12,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 20:33:12,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499398452] [2021-01-06 20:33:12,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 20:33:12,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:33:12,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 20:33:12,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-01-06 20:33:12,070 INFO L87 Difference]: Start difference. First operand 45639 states and 62277 transitions. Second operand 5 states. [2021-01-06 20:33:16,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:33:16,015 INFO L93 Difference]: Finished difference Result 68516 states and 94461 transitions. [2021-01-06 20:33:16,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 20:33:16,016 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2021-01-06 20:33:16,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:33:16,095 INFO L225 Difference]: With dead ends: 68516 [2021-01-06 20:33:16,095 INFO L226 Difference]: Without dead ends: 61438 [2021-01-06 20:33:16,118 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 20:33:16,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61438 states. [2021-01-06 20:33:20,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61438 to 52427. [2021-01-06 20:33:20,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52427 states. [2021-01-06 20:33:20,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52427 states to 52427 states and 71593 transitions. [2021-01-06 20:33:20,237 INFO L78 Accepts]: Start accepts. Automaton has 52427 states and 71593 transitions. Word has length 61 [2021-01-06 20:33:20,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:33:20,238 INFO L481 AbstractCegarLoop]: Abstraction has 52427 states and 71593 transitions. [2021-01-06 20:33:20,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 20:33:20,238 INFO L276 IsEmpty]: Start isEmpty. Operand 52427 states and 71593 transitions. [2021-01-06 20:33:20,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-01-06 20:33:20,243 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:33:20,243 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:33:20,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-01-06 20:33:20,243 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:33:20,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:33:20,244 INFO L82 PathProgramCache]: Analyzing trace with hash -237073659, now seen corresponding path program 1 times [2021-01-06 20:33:20,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:33:20,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974035375] [2021-01-06 20:33:20,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:33:20,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:33:20,317 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-06 20:33:20,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974035375] [2021-01-06 20:33:20,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:33:20,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 20:33:20,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557471076] [2021-01-06 20:33:20,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 20:33:20,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:33:20,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 20:33:20,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 20:33:20,319 INFO L87 Difference]: Start difference. First operand 52427 states and 71593 transitions. Second operand 5 states. [2021-01-06 20:33:24,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:33:24,979 INFO L93 Difference]: Finished difference Result 77722 states and 107184 transitions. [2021-01-06 20:33:24,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 20:33:24,980 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2021-01-06 20:33:24,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:33:25,060 INFO L225 Difference]: With dead ends: 77722 [2021-01-06 20:33:25,060 INFO L226 Difference]: Without dead ends: 66265 [2021-01-06 20:33:25,084 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 20:33:25,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66265 states. [2021-01-06 20:33:29,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66265 to 61311. [2021-01-06 20:33:29,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61311 states. [2021-01-06 20:33:29,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61311 states to 61311 states and 83481 transitions. [2021-01-06 20:33:29,742 INFO L78 Accepts]: Start accepts. Automaton has 61311 states and 83481 transitions. Word has length 62 [2021-01-06 20:33:29,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:33:29,743 INFO L481 AbstractCegarLoop]: Abstraction has 61311 states and 83481 transitions. [2021-01-06 20:33:29,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 20:33:29,743 INFO L276 IsEmpty]: Start isEmpty. Operand 61311 states and 83481 transitions. [2021-01-06 20:33:29,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-01-06 20:33:29,749 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:33:29,749 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:33:29,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-01-06 20:33:29,749 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:33:29,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:33:29,750 INFO L82 PathProgramCache]: Analyzing trace with hash -88290541, now seen corresponding path program 1 times [2021-01-06 20:33:29,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:33:29,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109694687] [2021-01-06 20:33:29,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:33:29,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:33:29,796 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:33:29,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109694687] [2021-01-06 20:33:29,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:33:29,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:33:29,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522207504] [2021-01-06 20:33:29,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:33:29,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:33:29,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:33:29,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:33:29,799 INFO L87 Difference]: Start difference. First operand 61311 states and 83481 transitions. Second operand 3 states. [2021-01-06 20:33:35,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:33:35,705 INFO L93 Difference]: Finished difference Result 134114 states and 181915 transitions. [2021-01-06 20:33:35,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:33:35,706 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2021-01-06 20:33:35,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:33:35,819 INFO L225 Difference]: With dead ends: 134114 [2021-01-06 20:33:35,820 INFO L226 Difference]: Without dead ends: 79961 [2021-01-06 20:33:35,865 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 20:33:35,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79961 states. [2021-01-06 20:33:41,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79961 to 76836. [2021-01-06 20:33:41,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76836 states. [2021-01-06 20:33:41,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76836 states to 76836 states and 102857 transitions. [2021-01-06 20:33:41,642 INFO L78 Accepts]: Start accepts. Automaton has 76836 states and 102857 transitions. Word has length 64 [2021-01-06 20:33:41,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:33:41,643 INFO L481 AbstractCegarLoop]: Abstraction has 76836 states and 102857 transitions. [2021-01-06 20:33:41,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:33:41,643 INFO L276 IsEmpty]: Start isEmpty. Operand 76836 states and 102857 transitions. [2021-01-06 20:33:41,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-01-06 20:33:41,650 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:33:41,650 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:33:41,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-01-06 20:33:41,651 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:33:41,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:33:41,651 INFO L82 PathProgramCache]: Analyzing trace with hash -1387170523, now seen corresponding path program 1 times [2021-01-06 20:33:41,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:33:41,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327672199] [2021-01-06 20:33:41,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:33:41,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:33:41,727 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:33:41,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327672199] [2021-01-06 20:33:41,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531622606] [2021-01-06 20:33:41,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 20:33:41,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:33:41,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 6 conjunts are in the unsatisfiable core [2021-01-06 20:33:41,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 20:33:42,047 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:33:42,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 20:33:42,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-01-06 20:33:42,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832727511] [2021-01-06 20:33:42,048 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-06 20:33:42,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:33:42,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-06 20:33:42,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-01-06 20:33:42,049 INFO L87 Difference]: Start difference. First operand 76836 states and 102857 transitions. Second operand 11 states. [2021-01-06 20:33:53,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:33:53,201 INFO L93 Difference]: Finished difference Result 181749 states and 243239 transitions. [2021-01-06 20:33:53,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 20:33:53,202 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 66 [2021-01-06 20:33:53,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:33:53,399 INFO L225 Difference]: With dead ends: 181749 [2021-01-06 20:33:53,399 INFO L226 Difference]: Without dead ends: 126460 [2021-01-06 20:33:53,455 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2021-01-06 20:33:53,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126460 states. [2021-01-06 20:34:00,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126460 to 78582. [2021-01-06 20:34:00,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78582 states. [2021-01-06 20:34:00,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78582 states to 78582 states and 105719 transitions. [2021-01-06 20:34:00,475 INFO L78 Accepts]: Start accepts. Automaton has 78582 states and 105719 transitions. Word has length 66 [2021-01-06 20:34:00,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:34:00,476 INFO L481 AbstractCegarLoop]: Abstraction has 78582 states and 105719 transitions. [2021-01-06 20:34:00,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-06 20:34:00,476 INFO L276 IsEmpty]: Start isEmpty. Operand 78582 states and 105719 transitions. [2021-01-06 20:34:00,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-01-06 20:34:00,483 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:34:00,483 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:34:00,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-01-06 20:34:00,698 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:34:00,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:34:00,699 INFO L82 PathProgramCache]: Analyzing trace with hash -929496895, now seen corresponding path program 1 times [2021-01-06 20:34:00,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:34:00,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896272835] [2021-01-06 20:34:00,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:34:00,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:34:00,775 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:34:00,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896272835] [2021-01-06 20:34:00,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458646177] [2021-01-06 20:34:00,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 20:34:00,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:34:00,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 6 conjunts are in the unsatisfiable core [2021-01-06 20:34:00,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 20:34:01,055 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:34:01,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 20:34:01,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-01-06 20:34:01,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644234374] [2021-01-06 20:34:01,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-06 20:34:01,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:34:01,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-06 20:34:01,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-01-06 20:34:01,057 INFO L87 Difference]: Start difference. First operand 78582 states and 105719 transitions. Second operand 11 states. [2021-01-06 20:34:11,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:34:11,401 INFO L93 Difference]: Finished difference Result 162580 states and 217329 transitions. [2021-01-06 20:34:11,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 20:34:11,401 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2021-01-06 20:34:11,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:34:11,562 INFO L225 Difference]: With dead ends: 162580 [2021-01-06 20:34:11,562 INFO L226 Difference]: Without dead ends: 105084 [2021-01-06 20:34:11,615 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2021-01-06 20:34:11,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105084 states. [2021-01-06 20:34:19,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105084 to 78464. [2021-01-06 20:34:19,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78464 states. [2021-01-06 20:34:19,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78464 states to 78464 states and 104889 transitions. [2021-01-06 20:34:19,265 INFO L78 Accepts]: Start accepts. Automaton has 78464 states and 104889 transitions. Word has length 67 [2021-01-06 20:34:19,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:34:19,265 INFO L481 AbstractCegarLoop]: Abstraction has 78464 states and 104889 transitions. [2021-01-06 20:34:19,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-06 20:34:19,265 INFO L276 IsEmpty]: Start isEmpty. Operand 78464 states and 104889 transitions. [2021-01-06 20:34:19,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-01-06 20:34:19,270 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:34:19,270 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:34:19,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-01-06 20:34:19,474 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:34:19,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:34:19,475 INFO L82 PathProgramCache]: Analyzing trace with hash -2073252700, now seen corresponding path program 1 times [2021-01-06 20:34:19,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:34:19,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712711871] [2021-01-06 20:34:19,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:34:19,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:34:19,576 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:34:19,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712711871] [2021-01-06 20:34:19,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831908084] [2021-01-06 20:34:19,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 20:34:19,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:34:19,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 6 conjunts are in the unsatisfiable core [2021-01-06 20:34:19,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 20:34:19,910 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:34:19,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 20:34:19,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-01-06 20:34:19,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916250629] [2021-01-06 20:34:19,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-06 20:34:19,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:34:19,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-06 20:34:19,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-01-06 20:34:19,918 INFO L87 Difference]: Start difference. First operand 78464 states and 104889 transitions. Second operand 11 states. [2021-01-06 20:34:34,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:34:34,264 INFO L93 Difference]: Finished difference Result 180165 states and 239284 transitions. [2021-01-06 20:34:34,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 20:34:34,265 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2021-01-06 20:34:34,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:34:34,665 INFO L225 Difference]: With dead ends: 180165 [2021-01-06 20:34:34,665 INFO L226 Difference]: Without dead ends: 131999 [2021-01-06 20:34:34,718 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2021-01-06 20:34:34,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131999 states. [2021-01-06 20:34:44,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131999 to 86650. [2021-01-06 20:34:44,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86650 states. [2021-01-06 20:34:44,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86650 states to 86650 states and 115456 transitions. [2021-01-06 20:34:44,486 INFO L78 Accepts]: Start accepts. Automaton has 86650 states and 115456 transitions. Word has length 67 [2021-01-06 20:34:44,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:34:44,487 INFO L481 AbstractCegarLoop]: Abstraction has 86650 states and 115456 transitions. [2021-01-06 20:34:44,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-06 20:34:44,487 INFO L276 IsEmpty]: Start isEmpty. Operand 86650 states and 115456 transitions. [2021-01-06 20:34:44,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-01-06 20:34:44,494 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:34:44,494 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:34:44,707 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 20:34:44,708 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:34:44,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:34:44,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1719826038, now seen corresponding path program 1 times [2021-01-06 20:34:44,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:34:44,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610015605] [2021-01-06 20:34:44,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:34:44,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:34:44,777 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:34:44,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610015605] [2021-01-06 20:34:44,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:34:44,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:34:44,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647800621] [2021-01-06 20:34:44,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:34:44,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:34:44,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:34:44,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:34:44,779 INFO L87 Difference]: Start difference. First operand 86650 states and 115456 transitions. Second operand 3 states. [2021-01-06 20:34:51,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:34:51,638 INFO L93 Difference]: Finished difference Result 97470 states and 129109 transitions. [2021-01-06 20:34:51,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:34:51,639 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2021-01-06 20:34:51,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:34:51,711 INFO L225 Difference]: With dead ends: 97470 [2021-01-06 20:34:51,712 INFO L226 Difference]: Without dead ends: 63560 [2021-01-06 20:34:51,736 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 20:34:51,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63560 states. [2021-01-06 20:34:58,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63560 to 63541. [2021-01-06 20:34:58,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63541 states. [2021-01-06 20:34:58,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63541 states to 63541 states and 82998 transitions. [2021-01-06 20:34:58,658 INFO L78 Accepts]: Start accepts. Automaton has 63541 states and 82998 transitions. Word has length 69 [2021-01-06 20:34:58,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:34:58,658 INFO L481 AbstractCegarLoop]: Abstraction has 63541 states and 82998 transitions. [2021-01-06 20:34:58,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:34:58,658 INFO L276 IsEmpty]: Start isEmpty. Operand 63541 states and 82998 transitions. [2021-01-06 20:34:58,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-01-06 20:34:58,663 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:34:58,663 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:34:58,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-01-06 20:34:58,663 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:34:58,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:34:58,664 INFO L82 PathProgramCache]: Analyzing trace with hash 379264655, now seen corresponding path program 1 times [2021-01-06 20:34:58,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:34:58,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274934694] [2021-01-06 20:34:58,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:34:58,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:34:58,881 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:34:58,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274934694] [2021-01-06 20:34:58,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797978369] [2021-01-06 20:34:58,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 20:34:59,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:34:59,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 24 conjunts are in the unsatisfiable core [2021-01-06 20:34:59,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 20:34:59,216 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 20:34:59,762 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:34:59,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 20:34:59,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12] total 20 [2021-01-06 20:34:59,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977680870] [2021-01-06 20:34:59,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-01-06 20:34:59,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:34:59,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-01-06 20:34:59,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2021-01-06 20:34:59,764 INFO L87 Difference]: Start difference. First operand 63541 states and 82998 transitions. Second operand 20 states. [2021-01-06 20:35:00,483 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2021-01-06 20:35:00,704 WARN L197 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-01-06 20:35:01,031 WARN L197 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-01-06 20:35:01,461 WARN L197 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 105 [2021-01-06 20:35:01,945 WARN L197 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 108 [2021-01-06 20:35:02,277 WARN L197 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2021-01-06 20:35:02,890 WARN L197 SmtUtils]: Spent 487.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 114 [2021-01-06 20:35:03,425 WARN L197 SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 108 [2021-01-06 20:35:04,001 WARN L197 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 114 [2021-01-06 20:35:04,579 WARN L197 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 119 [2021-01-06 20:35:04,875 WARN L197 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2021-01-06 20:35:05,126 WARN L197 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-01-06 20:35:05,902 WARN L197 SmtUtils]: Spent 641.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 125 [2021-01-06 20:35:06,341 WARN L197 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-01-06 20:35:06,769 WARN L197 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2021-01-06 20:35:07,073 WARN L197 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-01-06 20:35:07,458 WARN L197 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2021-01-06 20:35:07,728 WARN L197 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2021-01-06 20:35:08,059 WARN L197 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2021-01-06 20:35:08,315 WARN L197 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-01-06 20:35:08,859 WARN L197 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 110 [2021-01-06 20:35:09,168 WARN L197 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2021-01-06 20:35:09,694 WARN L197 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 111 [2021-01-06 20:35:10,252 WARN L197 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 108 [2021-01-06 20:35:10,537 WARN L197 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2021-01-06 20:35:10,834 WARN L197 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2021-01-06 20:35:11,184 WARN L197 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2021-01-06 20:35:11,743 WARN L197 SmtUtils]: Spent 516.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 116 [2021-01-06 20:35:12,045 WARN L197 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2021-01-06 20:35:12,644 WARN L197 SmtUtils]: Spent 499.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 121 [2021-01-06 20:35:13,324 WARN L197 SmtUtils]: Spent 601.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 122 [2021-01-06 20:35:13,899 WARN L197 SmtUtils]: Spent 513.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 119 [2021-01-06 20:35:14,209 WARN L197 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2021-01-06 20:35:14,535 WARN L197 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2021-01-06 20:35:15,166 WARN L197 SmtUtils]: Spent 556.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 111 [2021-01-06 20:35:15,417 WARN L197 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-01-06 20:35:15,964 WARN L197 SmtUtils]: Spent 487.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 119 [2021-01-06 20:35:16,565 WARN L197 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 117 [2021-01-06 20:35:17,189 WARN L197 SmtUtils]: Spent 553.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 114 [2021-01-06 20:35:17,519 WARN L197 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2021-01-06 20:35:18,037 WARN L197 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 96 [2021-01-06 20:35:18,369 WARN L197 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-01-06 20:35:18,730 WARN L197 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2021-01-06 20:35:19,346 WARN L197 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 113 [2021-01-06 20:35:19,985 WARN L197 SmtUtils]: Spent 555.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 122 [2021-01-06 20:35:20,232 WARN L197 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2021-01-06 20:35:20,562 WARN L197 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2021-01-06 20:35:21,168 WARN L197 SmtUtils]: Spent 539.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 110 [2021-01-06 20:35:21,901 WARN L197 SmtUtils]: Spent 649.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 128 [2021-01-06 20:35:22,700 WARN L197 SmtUtils]: Spent 715.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 125 [2021-01-06 20:35:23,325 WARN L197 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 111 [2021-01-06 20:35:23,888 WARN L197 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 107 [2021-01-06 20:35:24,225 WARN L197 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2021-01-06 20:35:24,558 WARN L197 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2021-01-06 20:35:25,133 WARN L197 SmtUtils]: Spent 525.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 104 [2021-01-06 20:35:25,466 WARN L197 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-01-06 20:35:26,152 WARN L197 SmtUtils]: Spent 625.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 125 [2021-01-06 20:35:26,511 WARN L197 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-01-06 20:35:27,141 WARN L197 SmtUtils]: Spent 577.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 104 [2021-01-06 20:35:27,877 WARN L197 SmtUtils]: Spent 642.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 121 [2021-01-06 20:35:28,699 WARN L197 SmtUtils]: Spent 670.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 122 [2021-01-06 20:35:29,516 WARN L197 SmtUtils]: Spent 654.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 119 [2021-01-06 20:35:29,816 WARN L197 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-01-06 20:35:30,607 WARN L197 SmtUtils]: Spent 658.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 117 [2021-01-06 20:35:31,244 WARN L197 SmtUtils]: Spent 536.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 102 [2021-01-06 20:35:31,935 WARN L197 SmtUtils]: Spent 608.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 115 [2021-01-06 20:35:32,586 WARN L197 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 99 [2021-01-06 20:35:33,377 WARN L197 SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 110 [2021-01-06 20:35:34,180 WARN L197 SmtUtils]: Spent 660.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 113 [2021-01-06 20:35:34,581 WARN L197 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-01-06 20:35:35,262 WARN L197 SmtUtils]: Spent 545.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 98 [2021-01-06 20:35:36,178 WARN L197 SmtUtils]: Spent 765.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 128 [2021-01-06 20:35:36,992 WARN L197 SmtUtils]: Spent 701.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 113 [2021-01-06 20:35:37,679 WARN L197 SmtUtils]: Spent 591.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 110 [2021-01-06 20:35:38,618 WARN L197 SmtUtils]: Spent 800.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 130 [2021-01-06 20:35:38,993 WARN L197 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-01-06 20:35:39,427 WARN L197 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-01-06 20:35:40,306 WARN L197 SmtUtils]: Spent 648.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 109 [2021-01-06 20:35:41,056 WARN L197 SmtUtils]: Spent 599.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 99 [2021-01-06 20:35:41,946 WARN L197 SmtUtils]: Spent 763.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 121 [2021-01-06 20:35:42,709 WARN L197 SmtUtils]: Spent 704.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 107 [2021-01-06 20:35:43,609 WARN L197 SmtUtils]: Spent 825.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 119 [2021-01-06 20:35:44,377 WARN L197 SmtUtils]: Spent 684.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 101 [2021-01-06 20:35:44,899 WARN L197 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2021-01-06 20:35:45,857 WARN L197 SmtUtils]: Spent 792.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 105 [2021-01-06 20:35:46,775 WARN L197 SmtUtils]: Spent 732.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 110 [2021-01-06 20:35:47,592 WARN L197 SmtUtils]: Spent 721.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 95 [2021-01-06 20:35:48,585 WARN L197 SmtUtils]: Spent 785.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 107 [2021-01-06 20:35:49,508 WARN L197 SmtUtils]: Spent 769.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 116 [2021-01-06 20:35:50,561 WARN L197 SmtUtils]: Spent 871.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 113 [2021-01-06 20:35:51,703 WARN L197 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 138 DAG size of output: 130 [2021-01-06 20:35:52,703 WARN L197 SmtUtils]: Spent 907.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 110 [2021-01-06 20:35:53,773 WARN L197 SmtUtils]: Spent 894.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 105 [2021-01-06 20:35:54,987 WARN L197 SmtUtils]: Spent 992.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 118 [2021-01-06 20:35:56,396 WARN L197 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 132 DAG size of output: 124 [2021-01-06 20:35:57,497 WARN L197 SmtUtils]: Spent 981.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 107 [2021-01-06 20:35:58,777 WARN L197 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 125 DAG size of output: 117 [2021-01-06 20:35:59,894 WARN L197 SmtUtils]: Spent 994.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 116 [2021-01-06 20:36:01,140 WARN L197 SmtUtils]: Spent 943.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 115 [2021-01-06 20:36:02,342 WARN L197 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 124 DAG size of output: 124 [2021-01-06 20:36:03,365 WARN L197 SmtUtils]: Spent 933.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 101 [2021-01-06 20:36:04,943 WARN L197 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 136 DAG size of output: 128 [2021-01-06 20:36:06,457 WARN L197 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 126 DAG size of output: 118 [2021-01-06 20:36:08,073 WARN L197 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 112 DAG size of output: 112 [2021-01-06 20:36:09,463 WARN L197 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 124 DAG size of output: 116 [2021-01-06 20:36:12,077 WARN L197 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 135 DAG size of output: 127 [2021-01-06 20:36:12,873 WARN L197 SmtUtils]: Spent 452.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-01-06 20:36:14,366 WARN L197 SmtUtils]: Spent 489.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-01-06 20:36:15,431 WARN L197 SmtUtils]: Spent 424.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-01-06 20:36:16,314 WARN L197 SmtUtils]: Spent 482.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-01-06 20:36:17,664 WARN L197 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 113 DAG size of output: 113 [2021-01-06 20:36:19,397 WARN L197 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 129 DAG size of output: 121 [2021-01-06 20:36:20,880 WARN L197 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 120 DAG size of output: 112 [2021-01-06 20:36:22,156 WARN L197 SmtUtils]: Spent 525.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-01-06 20:36:23,859 WARN L197 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 124 DAG size of output: 124 [2021-01-06 20:36:25,365 WARN L197 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 106 DAG size of output: 106 [2021-01-06 20:36:26,884 WARN L197 SmtUtils]: Spent 551.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-01-06 20:36:27,723 WARN L197 SmtUtils]: Spent 591.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-01-06 20:36:29,072 WARN L197 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 104 DAG size of output: 96 [2021-01-06 20:36:30,427 WARN L197 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 104 DAG size of output: 96 [2021-01-06 20:36:31,359 WARN L197 SmtUtils]: Spent 748.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2021-01-06 20:36:32,494 WARN L197 SmtUtils]: Spent 562.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-01-06 20:36:34,034 WARN L197 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 107 DAG size of output: 99 [2021-01-06 20:36:35,257 WARN L197 SmtUtils]: Spent 609.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-01-06 20:36:36,051 WARN L197 SmtUtils]: Spent 637.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2021-01-06 20:36:37,573 WARN L197 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 110 DAG size of output: 102 [2021-01-06 20:36:38,288 WARN L197 SmtUtils]: Spent 613.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-01-06 20:36:39,820 WARN L197 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 115 DAG size of output: 107 [2021-01-06 20:36:41,320 WARN L197 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 115 DAG size of output: 107 [2021-01-06 20:36:42,858 WARN L197 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 116 DAG size of output: 116 [2021-01-06 20:36:43,859 WARN L197 SmtUtils]: Spent 748.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2021-01-06 20:36:44,981 WARN L197 SmtUtils]: Spent 556.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-01-06 20:36:45,923 WARN L197 SmtUtils]: Spent 815.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2021-01-06 20:36:47,766 WARN L197 SmtUtils]: Spent 1.55 s on a formula simplification. DAG size of input: 109 DAG size of output: 101 [2021-01-06 20:36:48,557 WARN L197 SmtUtils]: Spent 671.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-01-06 20:36:50,105 WARN L197 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 103 DAG size of output: 95 [2021-01-06 20:36:51,831 WARN L197 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 118 DAG size of output: 110 [2021-01-06 20:36:53,535 WARN L197 SmtUtils]: Spent 1.51 s on a formula simplification. DAG size of input: 118 DAG size of output: 110