/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 20:54:20,275 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 20:54:20,277 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 20:54:20,315 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 20:54:20,316 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 20:54:20,318 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 20:54:20,320 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 20:54:20,323 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 20:54:20,325 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 20:54:20,327 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 20:54:20,328 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 20:54:20,330 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 20:54:20,330 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 20:54:20,332 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 20:54:20,334 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 20:54:20,335 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 20:54:20,336 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 20:54:20,338 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 20:54:20,340 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 20:54:20,343 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 20:54:20,345 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 20:54:20,347 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 20:54:20,349 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 20:54:20,350 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 20:54:20,362 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-06 20:54:20,362 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-06 20:54:20,362 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-06 20:54:20,366 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-06 20:54:20,366 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-06 20:54:20,368 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-06 20:54:20,372 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 20:54:20,374 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 20:54:20,375 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 20:54:20,376 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 20:54:20,379 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 20:54:20,379 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 20:54:20,383 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 20:54:20,384 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 20:54:20,384 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 20:54:20,388 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 20:54:20,390 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 20:54:20,392 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 20:54:20,450 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 20:54:20,450 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 20:54:20,452 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 20:54:20,452 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 20:54:20,453 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 20:54:20,453 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 20:54:20,455 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 20:54:20,455 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 20:54:20,455 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 20:54:20,456 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 20:54:20,457 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 20:54:20,457 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 20:54:20,457 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 20:54:20,457 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 20:54:20,458 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 20:54:20,458 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 20:54:20,458 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 20:54:20,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 20:54:20,459 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 20:54:20,459 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 20:54:20,459 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 20:54:20,459 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 20:54:20,459 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 20:54:20,460 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 20:54:20,460 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 20:54:20,460 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 20:54:20,868 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 20:54:20,900 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 20:54:20,903 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 20:54:20,905 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 20:54:20,906 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 20:54:20,907 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2021-01-06 20:54:21,002 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/1b0da33d5/e031ca8ce3d54bc29c8d73f1707b82a6/FLAGee3165d76 [2021-01-06 20:54:21,678 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 20:54:21,679 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2021-01-06 20:54:21,695 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/1b0da33d5/e031ca8ce3d54bc29c8d73f1707b82a6/FLAGee3165d76 [2021-01-06 20:54:21,999 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/1b0da33d5/e031ca8ce3d54bc29c8d73f1707b82a6 [2021-01-06 20:54:22,003 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 20:54:22,007 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 20:54:22,011 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 20:54:22,011 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 20:54:22,016 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 20:54:22,018 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 08:54:22" (1/1) ... [2021-01-06 20:54:22,021 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31cb2378 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:54:22, skipping insertion in model container [2021-01-06 20:54:22,021 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 08:54:22" (1/1) ... [2021-01-06 20:54:22,038 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 20:54:22,108 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_1406~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~0,] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~0,] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~0,] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_1479~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_1~0,] left hand side expression in assignment: lhs: VariableLHS[~assert__arg~0,] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~1,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~1,] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~1,] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~1,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~1,] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~1,] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~__return_1546~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_2~0,] left hand side expression in assignment: lhs: VariableLHS[~assert__arg~1,] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_1555_0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_0~1,] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~2,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~2,] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~2,] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~2,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~2,] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~2,] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~2,] left hand side expression in assignment: lhs: VariableLHS[~__return_1616~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_1617_0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_0~1,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_3~0,] left hand side expression in assignment: lhs: VariableLHS[~assert__arg~2,] [2021-01-06 20:54:22,413 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[6776,6789] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_1555_0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~2,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~2,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~2,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~2,] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~1,] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~1,] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~1,] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~1,] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~1,] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~1,] left hand side expression in assignment: lhs: VariableLHS[~__return_1559~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~__return_1693~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_4~0,] left hand side expression in assignment: lhs: VariableLHS[~assert__arg~3,] [2021-01-06 20:54:22,454 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[9087,9100] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~__return_1712~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_1617_0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] [2021-01-06 20:54:22,484 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 20:54:22,501 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_1406~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~0,] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~0,] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~0,] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_1479~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_1~0,] left hand side expression in assignment: lhs: VariableLHS[~assert__arg~0,] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~1,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~1,] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~1,] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~1,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~1,] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~1,] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~__return_1546~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_2~0,] left hand side expression in assignment: lhs: VariableLHS[~assert__arg~1,] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_1555_0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_0~1,] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~2,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~2,] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~2,] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~2,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~2,] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~2,] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~2,] left hand side expression in assignment: lhs: VariableLHS[~__return_1616~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_1617_0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_0~1,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_3~0,] left hand side expression in assignment: lhs: VariableLHS[~assert__arg~2,] [2021-01-06 20:54:22,563 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[6776,6789] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_1555_0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~2,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~2,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~2,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~2,] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~1,] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~1,] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~1,] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~1,] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~1,] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~1,] left hand side expression in assignment: lhs: VariableLHS[~__return_1559~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~__return_1693~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_4~0,] left hand side expression in assignment: lhs: VariableLHS[~assert__arg~3,] [2021-01-06 20:54:22,577 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[9087,9100] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~__return_1712~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_1617_0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] [2021-01-06 20:54:22,588 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 20:54:22,611 INFO L208 MainTranslator]: Completed translation [2021-01-06 20:54:22,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:54:22 WrapperNode [2021-01-06 20:54:22,612 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 20:54:22,614 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 20:54:22,614 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 20:54:22,614 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 20:54:22,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:54:22" (1/1) ... [2021-01-06 20:54:22,636 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:54:22" (1/1) ... [2021-01-06 20:54:22,708 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 20:54:22,709 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 20:54:22,712 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 20:54:22,712 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 20:54:22,720 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:54:22" (1/1) ... [2021-01-06 20:54:22,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:54:22" (1/1) ... [2021-01-06 20:54:22,728 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:54:22" (1/1) ... [2021-01-06 20:54:22,728 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:54:22" (1/1) ... [2021-01-06 20:54:22,737 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:54:22" (1/1) ... [2021-01-06 20:54:22,743 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:54:22" (1/1) ... [2021-01-06 20:54:22,747 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:54:22" (1/1) ... [2021-01-06 20:54:22,752 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 20:54:22,754 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 20:54:22,754 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 20:54:22,754 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 20:54:22,755 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:54:22" (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 20:54:22,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 20:54:22,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 20:54:22,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 20:54:22,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 20:54:23,921 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 20:54:23,922 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-01-06 20:54:23,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 08:54:23 BoogieIcfgContainer [2021-01-06 20:54:23,924 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 20:54:23,926 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 20:54:23,926 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 20:54:23,930 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 20:54:23,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 08:54:22" (1/3) ... [2021-01-06 20:54:23,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f63fa49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 08:54:23, skipping insertion in model container [2021-01-06 20:54:23,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:54:22" (2/3) ... [2021-01-06 20:54:23,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f63fa49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 08:54:23, skipping insertion in model container [2021-01-06 20:54:23,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 08:54:23" (3/3) ... [2021-01-06 20:54:23,934 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2021-01-06 20:54:23,942 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 20:54:23,947 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-01-06 20:54:23,966 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-01-06 20:54:23,993 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 20:54:23,993 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 20:54:23,993 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 20:54:23,994 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 20:54:23,994 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 20:54:23,994 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 20:54:23,994 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 20:54:23,994 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 20:54:24,013 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states. [2021-01-06 20:54:24,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-01-06 20:54:24,021 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:54:24,022 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:54:24,022 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:54:24,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:54:24,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1038847250, now seen corresponding path program 1 times [2021-01-06 20:54:24,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:54:24,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551206260] [2021-01-06 20:54:24,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:54:24,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:54:24,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:54:24,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551206260] [2021-01-06 20:54:24,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:54:24,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:54:24,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510046826] [2021-01-06 20:54:24,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:54:24,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:54:24,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:54:24,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:54:24,445 INFO L87 Difference]: Start difference. First operand 106 states. Second operand 3 states. [2021-01-06 20:54:24,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:54:24,557 INFO L93 Difference]: Finished difference Result 204 states and 332 transitions. [2021-01-06 20:54:24,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:54:24,560 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2021-01-06 20:54:24,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:54:24,574 INFO L225 Difference]: With dead ends: 204 [2021-01-06 20:54:24,574 INFO L226 Difference]: Without dead ends: 153 [2021-01-06 20:54:24,578 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:54:24,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-01-06 20:54:24,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 151. [2021-01-06 20:54:24,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2021-01-06 20:54:24,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 212 transitions. [2021-01-06 20:54:24,639 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 212 transitions. Word has length 48 [2021-01-06 20:54:24,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:54:24,640 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 212 transitions. [2021-01-06 20:54:24,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:54:24,641 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 212 transitions. [2021-01-06 20:54:24,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-01-06 20:54:24,643 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:54:24,643 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:54:24,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 20:54:24,644 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:54:24,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:54:24,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1964840261, now seen corresponding path program 1 times [2021-01-06 20:54:24,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:54:24,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167253149] [2021-01-06 20:54:24,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:54:24,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:54:24,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:54:24,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167253149] [2021-01-06 20:54:24,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:54:24,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:54:24,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40776631] [2021-01-06 20:54:24,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:54:24,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:54:24,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:54:24,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:54:24,823 INFO L87 Difference]: Start difference. First operand 151 states and 212 transitions. Second operand 3 states. [2021-01-06 20:54:24,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:54:24,957 INFO L93 Difference]: Finished difference Result 276 states and 401 transitions. [2021-01-06 20:54:24,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:54:24,959 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49 [2021-01-06 20:54:24,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:54:24,964 INFO L225 Difference]: With dead ends: 276 [2021-01-06 20:54:24,964 INFO L226 Difference]: Without dead ends: 195 [2021-01-06 20:54:24,970 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:54:24,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-01-06 20:54:25,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 193. [2021-01-06 20:54:25,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2021-01-06 20:54:25,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 275 transitions. [2021-01-06 20:54:25,020 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 275 transitions. Word has length 49 [2021-01-06 20:54:25,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:54:25,021 INFO L481 AbstractCegarLoop]: Abstraction has 193 states and 275 transitions. [2021-01-06 20:54:25,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:54:25,021 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 275 transitions. [2021-01-06 20:54:25,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-01-06 20:54:25,024 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:54:25,024 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:54:25,025 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 20:54:25,025 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:54:25,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:54:25,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1398279763, now seen corresponding path program 1 times [2021-01-06 20:54:25,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:54:25,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542200954] [2021-01-06 20:54:25,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:54:25,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:54:25,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:54:25,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542200954] [2021-01-06 20:54:25,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:54:25,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 20:54:25,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676735639] [2021-01-06 20:54:25,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 20:54:25,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:54:25,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 20:54:25,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 20:54:25,161 INFO L87 Difference]: Start difference. First operand 193 states and 275 transitions. Second operand 5 states. [2021-01-06 20:54:25,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:54:25,294 INFO L93 Difference]: Finished difference Result 363 states and 526 transitions. [2021-01-06 20:54:25,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 20:54:25,295 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2021-01-06 20:54:25,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:54:25,297 INFO L225 Difference]: With dead ends: 363 [2021-01-06 20:54:25,297 INFO L226 Difference]: Without dead ends: 193 [2021-01-06 20:54:25,299 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-06 20:54:25,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-01-06 20:54:25,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2021-01-06 20:54:25,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2021-01-06 20:54:25,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 271 transitions. [2021-01-06 20:54:25,320 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 271 transitions. Word has length 50 [2021-01-06 20:54:25,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:54:25,321 INFO L481 AbstractCegarLoop]: Abstraction has 193 states and 271 transitions. [2021-01-06 20:54:25,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 20:54:25,321 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 271 transitions. [2021-01-06 20:54:25,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-01-06 20:54:25,323 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:54:25,323 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:54:25,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 20:54:25,324 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:54:25,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:54:25,325 INFO L82 PathProgramCache]: Analyzing trace with hash -953763925, now seen corresponding path program 1 times [2021-01-06 20:54:25,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:54:25,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865307320] [2021-01-06 20:54:25,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:54:25,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:54:25,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:54:25,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865307320] [2021-01-06 20:54:25,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:54:25,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 20:54:25,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084894359] [2021-01-06 20:54:25,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 20:54:25,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:54:25,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 20:54:25,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 20:54:25,441 INFO L87 Difference]: Start difference. First operand 193 states and 271 transitions. Second operand 5 states. [2021-01-06 20:54:25,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:54:25,585 INFO L93 Difference]: Finished difference Result 355 states and 509 transitions. [2021-01-06 20:54:25,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 20:54:25,586 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2021-01-06 20:54:25,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:54:25,590 INFO L225 Difference]: With dead ends: 355 [2021-01-06 20:54:25,590 INFO L226 Difference]: Without dead ends: 193 [2021-01-06 20:54:25,593 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-06 20:54:25,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-01-06 20:54:25,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2021-01-06 20:54:25,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2021-01-06 20:54:25,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 267 transitions. [2021-01-06 20:54:25,634 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 267 transitions. Word has length 51 [2021-01-06 20:54:25,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:54:25,634 INFO L481 AbstractCegarLoop]: Abstraction has 193 states and 267 transitions. [2021-01-06 20:54:25,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 20:54:25,635 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 267 transitions. [2021-01-06 20:54:25,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-01-06 20:54:25,640 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:54:25,640 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:54:25,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 20:54:25,640 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:54:25,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:54:25,641 INFO L82 PathProgramCache]: Analyzing trace with hash -380697261, now seen corresponding path program 1 times [2021-01-06 20:54:25,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:54:25,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815356069] [2021-01-06 20:54:25,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:54:25,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:54:25,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:54:25,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815356069] [2021-01-06 20:54:25,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:54:25,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 20:54:25,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167178210] [2021-01-06 20:54:25,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 20:54:25,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:54:25,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 20:54:25,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 20:54:25,806 INFO L87 Difference]: Start difference. First operand 193 states and 267 transitions. Second operand 5 states. [2021-01-06 20:54:25,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:54:25,958 INFO L93 Difference]: Finished difference Result 359 states and 506 transitions. [2021-01-06 20:54:25,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 20:54:25,959 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2021-01-06 20:54:25,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:54:25,960 INFO L225 Difference]: With dead ends: 359 [2021-01-06 20:54:25,961 INFO L226 Difference]: Without dead ends: 193 [2021-01-06 20:54:25,962 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-06 20:54:25,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-01-06 20:54:25,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2021-01-06 20:54:25,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2021-01-06 20:54:25,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 263 transitions. [2021-01-06 20:54:25,978 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 263 transitions. Word has length 52 [2021-01-06 20:54:25,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:54:25,979 INFO L481 AbstractCegarLoop]: Abstraction has 193 states and 263 transitions. [2021-01-06 20:54:25,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 20:54:25,979 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 263 transitions. [2021-01-06 20:54:25,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-01-06 20:54:25,980 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:54:25,980 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:54:25,981 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-06 20:54:25,981 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:54:25,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:54:25,982 INFO L82 PathProgramCache]: Analyzing trace with hash -154878177, now seen corresponding path program 1 times [2021-01-06 20:54:25,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:54:25,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040323991] [2021-01-06 20:54:25,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:54:26,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:54:26,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:54:26,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040323991] [2021-01-06 20:54:26,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:54:26,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 20:54:26,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718582132] [2021-01-06 20:54:26,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 20:54:26,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:54:26,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 20:54:26,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-01-06 20:54:26,141 INFO L87 Difference]: Start difference. First operand 193 states and 263 transitions. Second operand 5 states. [2021-01-06 20:54:26,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:54:26,258 INFO L93 Difference]: Finished difference Result 591 states and 834 transitions. [2021-01-06 20:54:26,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 20:54:26,258 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 53 [2021-01-06 20:54:26,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:54:26,261 INFO L225 Difference]: With dead ends: 591 [2021-01-06 20:54:26,262 INFO L226 Difference]: Without dead ends: 473 [2021-01-06 20:54:26,262 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 20:54:26,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2021-01-06 20:54:26,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 284. [2021-01-06 20:54:26,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2021-01-06 20:54:26,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 396 transitions. [2021-01-06 20:54:26,292 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 396 transitions. Word has length 53 [2021-01-06 20:54:26,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:54:26,292 INFO L481 AbstractCegarLoop]: Abstraction has 284 states and 396 transitions. [2021-01-06 20:54:26,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 20:54:26,292 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 396 transitions. [2021-01-06 20:54:26,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-01-06 20:54:26,293 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:54:26,294 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:54:26,294 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-06 20:54:26,294 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:54:26,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:54:26,295 INFO L82 PathProgramCache]: Analyzing trace with hash -27056057, now seen corresponding path program 1 times [2021-01-06 20:54:26,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:54:26,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488986770] [2021-01-06 20:54:26,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:54:26,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:54:26,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:54:26,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488986770] [2021-01-06 20:54:26,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:54:26,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 20:54:26,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183168204] [2021-01-06 20:54:26,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 20:54:26,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:54:26,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 20:54:26,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-01-06 20:54:26,381 INFO L87 Difference]: Start difference. First operand 284 states and 396 transitions. Second operand 5 states. [2021-01-06 20:54:26,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:54:26,524 INFO L93 Difference]: Finished difference Result 672 states and 952 transitions. [2021-01-06 20:54:26,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 20:54:26,526 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 53 [2021-01-06 20:54:26,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:54:26,531 INFO L225 Difference]: With dead ends: 672 [2021-01-06 20:54:26,531 INFO L226 Difference]: Without dead ends: 554 [2021-01-06 20:54:26,533 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 20:54:26,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2021-01-06 20:54:26,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 412. [2021-01-06 20:54:26,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2021-01-06 20:54:26,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 581 transitions. [2021-01-06 20:54:26,593 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 581 transitions. Word has length 53 [2021-01-06 20:54:26,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:54:26,595 INFO L481 AbstractCegarLoop]: Abstraction has 412 states and 581 transitions. [2021-01-06 20:54:26,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 20:54:26,596 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 581 transitions. [2021-01-06 20:54:26,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-01-06 20:54:26,597 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:54:26,598 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:54:26,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-06 20:54:26,598 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:54:26,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:54:26,599 INFO L82 PathProgramCache]: Analyzing trace with hash 477975091, now seen corresponding path program 1 times [2021-01-06 20:54:26,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:54:26,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496271339] [2021-01-06 20:54:26,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:54:26,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:54:26,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:54:26,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496271339] [2021-01-06 20:54:26,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:54:26,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 20:54:26,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193493555] [2021-01-06 20:54:26,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 20:54:26,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:54:26,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 20:54:26,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-01-06 20:54:26,755 INFO L87 Difference]: Start difference. First operand 412 states and 581 transitions. Second operand 5 states. [2021-01-06 20:54:26,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:54:26,889 INFO L93 Difference]: Finished difference Result 778 states and 1107 transitions. [2021-01-06 20:54:26,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 20:54:26,890 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 53 [2021-01-06 20:54:26,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:54:26,894 INFO L225 Difference]: With dead ends: 778 [2021-01-06 20:54:26,894 INFO L226 Difference]: Without dead ends: 660 [2021-01-06 20:54:26,895 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 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 20:54:26,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2021-01-06 20:54:26,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 503. [2021-01-06 20:54:26,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 503 states. [2021-01-06 20:54:26,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 714 transitions. [2021-01-06 20:54:26,951 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 714 transitions. Word has length 53 [2021-01-06 20:54:26,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:54:26,953 INFO L481 AbstractCegarLoop]: Abstraction has 503 states and 714 transitions. [2021-01-06 20:54:26,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 20:54:26,954 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 714 transitions. [2021-01-06 20:54:26,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-01-06 20:54:26,954 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:54:26,955 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:54:26,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-06 20:54:26,955 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:54:26,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:54:26,960 INFO L82 PathProgramCache]: Analyzing trace with hash -680909608, now seen corresponding path program 1 times [2021-01-06 20:54:26,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:54:26,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128813261] [2021-01-06 20:54:26,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:54:26,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:54:27,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:54:27,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128813261] [2021-01-06 20:54:27,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:54:27,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-06 20:54:27,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132326217] [2021-01-06 20:54:27,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 20:54:27,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:54:27,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 20:54:27,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-01-06 20:54:27,188 INFO L87 Difference]: Start difference. First operand 503 states and 714 transitions. Second operand 9 states. [2021-01-06 20:54:27,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:54:27,821 INFO L93 Difference]: Finished difference Result 1368 states and 1966 transitions. [2021-01-06 20:54:27,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 20:54:27,822 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 54 [2021-01-06 20:54:27,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:54:27,828 INFO L225 Difference]: With dead ends: 1368 [2021-01-06 20:54:27,828 INFO L226 Difference]: Without dead ends: 928 [2021-01-06 20:54:27,829 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2021-01-06 20:54:27,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 928 states. [2021-01-06 20:54:27,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 928 to 503. [2021-01-06 20:54:27,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 503 states. [2021-01-06 20:54:27,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 713 transitions. [2021-01-06 20:54:27,926 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 713 transitions. Word has length 54 [2021-01-06 20:54:27,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:54:27,926 INFO L481 AbstractCegarLoop]: Abstraction has 503 states and 713 transitions. [2021-01-06 20:54:27,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 20:54:27,926 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 713 transitions. [2021-01-06 20:54:27,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-01-06 20:54:27,927 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:54:27,928 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:54:27,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-01-06 20:54:27,928 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:54:27,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:54:27,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1757672516, now seen corresponding path program 1 times [2021-01-06 20:54:27,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:54:27,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291935020] [2021-01-06 20:54:27,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:54:27,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:54:28,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:54:28,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291935020] [2021-01-06 20:54:28,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:54:28,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-01-06 20:54:28,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079819238] [2021-01-06 20:54:28,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 20:54:28,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:54:28,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 20:54:28,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-01-06 20:54:28,123 INFO L87 Difference]: Start difference. First operand 503 states and 713 transitions. Second operand 10 states. [2021-01-06 20:54:29,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:54:29,029 INFO L93 Difference]: Finished difference Result 1398 states and 2001 transitions. [2021-01-06 20:54:29,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-06 20:54:29,037 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 54 [2021-01-06 20:54:29,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:54:29,044 INFO L225 Difference]: With dead ends: 1398 [2021-01-06 20:54:29,044 INFO L226 Difference]: Without dead ends: 963 [2021-01-06 20:54:29,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2021-01-06 20:54:29,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2021-01-06 20:54:29,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 503. [2021-01-06 20:54:29,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 503 states. [2021-01-06 20:54:29,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 711 transitions. [2021-01-06 20:54:29,135 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 711 transitions. Word has length 54 [2021-01-06 20:54:29,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:54:29,135 INFO L481 AbstractCegarLoop]: Abstraction has 503 states and 711 transitions. [2021-01-06 20:54:29,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 20:54:29,136 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 711 transitions. [2021-01-06 20:54:29,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-01-06 20:54:29,137 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:54:29,137 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:54:29,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-01-06 20:54:29,139 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:54:29,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:54:29,140 INFO L82 PathProgramCache]: Analyzing trace with hash -728953036, now seen corresponding path program 1 times [2021-01-06 20:54:29,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:54:29,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403054340] [2021-01-06 20:54:29,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:54:29,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:54:29,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:54:29,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403054340] [2021-01-06 20:54:29,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:54:29,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-01-06 20:54:29,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967496852] [2021-01-06 20:54:29,390 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 20:54:29,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:54:29,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 20:54:29,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-01-06 20:54:29,391 INFO L87 Difference]: Start difference. First operand 503 states and 711 transitions. Second operand 10 states. [2021-01-06 20:54:30,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:54:30,219 INFO L93 Difference]: Finished difference Result 1383 states and 1975 transitions. [2021-01-06 20:54:30,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-06 20:54:30,220 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 55 [2021-01-06 20:54:30,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:54:30,225 INFO L225 Difference]: With dead ends: 1383 [2021-01-06 20:54:30,225 INFO L226 Difference]: Without dead ends: 958 [2021-01-06 20:54:30,227 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2021-01-06 20:54:30,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2021-01-06 20:54:30,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 503. [2021-01-06 20:54:30,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 503 states. [2021-01-06 20:54:30,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 707 transitions. [2021-01-06 20:54:30,312 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 707 transitions. Word has length 55 [2021-01-06 20:54:30,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:54:30,313 INFO L481 AbstractCegarLoop]: Abstraction has 503 states and 707 transitions. [2021-01-06 20:54:30,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 20:54:30,313 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 707 transitions. [2021-01-06 20:54:30,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-01-06 20:54:30,314 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:54:30,314 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:54:30,314 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-01-06 20:54:30,314 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:54:30,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:54:30,315 INFO L82 PathProgramCache]: Analyzing trace with hash -2014195720, now seen corresponding path program 1 times [2021-01-06 20:54:30,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:54:30,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298472383] [2021-01-06 20:54:30,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:54:30,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:54:31,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:54:31,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298472383] [2021-01-06 20:54:31,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:54:31,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-01-06 20:54:31,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428139601] [2021-01-06 20:54:31,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-06 20:54:31,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:54:31,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-06 20:54:31,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=416, Unknown=0, NotChecked=0, Total=462 [2021-01-06 20:54:31,204 INFO L87 Difference]: Start difference. First operand 503 states and 707 transitions. Second operand 22 states. [2021-01-06 20:54:31,497 WARN L197 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 77 [2021-01-06 20:54:32,328 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2021-01-06 20:54:32,612 WARN L197 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2021-01-06 20:54:32,912 WARN L197 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 80 [2021-01-06 20:54:33,296 WARN L197 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 89 [2021-01-06 20:54:33,477 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2021-01-06 20:54:33,644 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2021-01-06 20:54:33,827 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2021-01-06 20:54:34,132 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2021-01-06 20:54:34,329 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2021-01-06 20:54:34,762 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2021-01-06 20:54:36,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:54:36,757 INFO L93 Difference]: Finished difference Result 2741 states and 3948 transitions. [2021-01-06 20:54:36,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-01-06 20:54:36,758 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 56 [2021-01-06 20:54:36,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:54:36,772 INFO L225 Difference]: With dead ends: 2741 [2021-01-06 20:54:36,773 INFO L226 Difference]: Without dead ends: 2614 [2021-01-06 20:54:36,775 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=403, Invalid=1577, Unknown=0, NotChecked=0, Total=1980 [2021-01-06 20:54:36,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2614 states. [2021-01-06 20:54:36,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2614 to 503. [2021-01-06 20:54:36,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 503 states. [2021-01-06 20:54:36,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 706 transitions. [2021-01-06 20:54:36,925 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 706 transitions. Word has length 56 [2021-01-06 20:54:36,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:54:36,925 INFO L481 AbstractCegarLoop]: Abstraction has 503 states and 706 transitions. [2021-01-06 20:54:36,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-01-06 20:54:36,925 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 706 transitions. [2021-01-06 20:54:36,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-01-06 20:54:36,926 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:54:36,926 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:54:36,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-01-06 20:54:36,927 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:54:36,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:54:36,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1797287643, now seen corresponding path program 1 times [2021-01-06 20:54:36,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:54:36,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615726919] [2021-01-06 20:54:36,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:54:36,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:54:37,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:54:37,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615726919] [2021-01-06 20:54:37,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:54:37,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-01-06 20:54:37,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321157755] [2021-01-06 20:54:37,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-01-06 20:54:37,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:54:37,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-01-06 20:54:37,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2021-01-06 20:54:37,722 INFO L87 Difference]: Start difference. First operand 503 states and 706 transitions. Second operand 21 states. [2021-01-06 20:54:37,939 WARN L197 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2021-01-06 20:54:38,502 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2021-01-06 20:54:38,710 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2021-01-06 20:54:38,958 WARN L197 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2021-01-06 20:54:39,272 WARN L197 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2021-01-06 20:54:39,434 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2021-01-06 20:54:39,597 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2021-01-06 20:54:39,754 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2021-01-06 20:54:40,005 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2021-01-06 20:54:42,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:54:42,229 INFO L93 Difference]: Finished difference Result 2827 states and 4069 transitions. [2021-01-06 20:54:42,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-01-06 20:54:42,230 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 56 [2021-01-06 20:54:42,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:54:42,244 INFO L225 Difference]: With dead ends: 2827 [2021-01-06 20:54:42,244 INFO L226 Difference]: Without dead ends: 2614 [2021-01-06 20:54:42,247 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=286, Invalid=1120, Unknown=0, NotChecked=0, Total=1406 [2021-01-06 20:54:42,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2614 states. [2021-01-06 20:54:42,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2614 to 508. [2021-01-06 20:54:42,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 508 states. [2021-01-06 20:54:42,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 711 transitions. [2021-01-06 20:54:42,397 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 711 transitions. Word has length 56 [2021-01-06 20:54:42,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:54:42,397 INFO L481 AbstractCegarLoop]: Abstraction has 508 states and 711 transitions. [2021-01-06 20:54:42,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2021-01-06 20:54:42,397 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 711 transitions. [2021-01-06 20:54:42,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-01-06 20:54:42,398 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:54:42,398 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:54:42,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-01-06 20:54:42,399 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:54:42,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:54:42,400 INFO L82 PathProgramCache]: Analyzing trace with hash 929811098, now seen corresponding path program 1 times [2021-01-06 20:54:42,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:54:42,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746605516] [2021-01-06 20:54:42,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:54:42,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:54:43,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:54:43,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746605516] [2021-01-06 20:54:43,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:54:43,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-01-06 20:54:43,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366205199] [2021-01-06 20:54:43,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-01-06 20:54:43,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:54:43,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-01-06 20:54:43,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2021-01-06 20:54:43,242 INFO L87 Difference]: Start difference. First operand 508 states and 711 transitions. Second operand 21 states. [2021-01-06 20:54:44,258 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2021-01-06 20:54:46,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:54:46,906 INFO L93 Difference]: Finished difference Result 3001 states and 4328 transitions. [2021-01-06 20:54:46,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-01-06 20:54:46,907 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 56 [2021-01-06 20:54:46,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:54:46,922 INFO L225 Difference]: With dead ends: 3001 [2021-01-06 20:54:46,922 INFO L226 Difference]: Without dead ends: 2788 [2021-01-06 20:54:46,924 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=333, Invalid=1389, Unknown=0, NotChecked=0, Total=1722 [2021-01-06 20:54:46,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2788 states. [2021-01-06 20:54:47,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2788 to 518. [2021-01-06 20:54:47,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 518 states. [2021-01-06 20:54:47,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 723 transitions. [2021-01-06 20:54:47,072 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 723 transitions. Word has length 56 [2021-01-06 20:54:47,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:54:47,072 INFO L481 AbstractCegarLoop]: Abstraction has 518 states and 723 transitions. [2021-01-06 20:54:47,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2021-01-06 20:54:47,072 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 723 transitions. [2021-01-06 20:54:47,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-01-06 20:54:47,073 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:54:47,073 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:54:47,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-01-06 20:54:47,074 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:54:47,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:54:47,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1026982439, now seen corresponding path program 1 times [2021-01-06 20:54:47,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:54:47,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264147387] [2021-01-06 20:54:47,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:54:47,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:54:47,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:54:47,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264147387] [2021-01-06 20:54:47,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:54:47,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-01-06 20:54:47,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485111301] [2021-01-06 20:54:47,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-01-06 20:54:47,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:54:47,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-01-06 20:54:47,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2021-01-06 20:54:47,888 INFO L87 Difference]: Start difference. First operand 518 states and 723 transitions. Second operand 21 states. [2021-01-06 20:54:48,069 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2021-01-06 20:54:48,861 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2021-01-06 20:54:49,064 WARN L197 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2021-01-06 20:54:49,334 WARN L197 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 73 [2021-01-06 20:54:49,483 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2021-01-06 20:54:49,635 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2021-01-06 20:54:52,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:54:52,379 INFO L93 Difference]: Finished difference Result 3410 states and 4923 transitions. [2021-01-06 20:54:52,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-01-06 20:54:52,379 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 56 [2021-01-06 20:54:52,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:54:52,397 INFO L225 Difference]: With dead ends: 3410 [2021-01-06 20:54:52,397 INFO L226 Difference]: Without dead ends: 3203 [2021-01-06 20:54:52,400 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=306, Invalid=1416, Unknown=0, NotChecked=0, Total=1722 [2021-01-06 20:54:52,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3203 states. [2021-01-06 20:54:52,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3203 to 523. [2021-01-06 20:54:52,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 523 states. [2021-01-06 20:54:52,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 729 transitions. [2021-01-06 20:54:52,589 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 729 transitions. Word has length 56 [2021-01-06 20:54:52,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:54:52,590 INFO L481 AbstractCegarLoop]: Abstraction has 523 states and 729 transitions. [2021-01-06 20:54:52,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2021-01-06 20:54:52,590 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 729 transitions. [2021-01-06 20:54:52,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-01-06 20:54:52,591 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:54:52,591 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:54:52,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-01-06 20:54:52,591 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:54:52,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:54:52,592 INFO L82 PathProgramCache]: Analyzing trace with hash 788720349, now seen corresponding path program 1 times [2021-01-06 20:54:52,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:54:52,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310817685] [2021-01-06 20:54:52,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:54:52,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:54:53,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:54:53,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310817685] [2021-01-06 20:54:53,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:54:53,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-01-06 20:54:53,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626277765] [2021-01-06 20:54:53,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-06 20:54:53,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:54:53,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-06 20:54:53,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-01-06 20:54:53,184 INFO L87 Difference]: Start difference. First operand 523 states and 729 transitions. Second operand 14 states. [2021-01-06 20:54:53,866 WARN L197 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 41 [2021-01-06 20:54:54,114 WARN L197 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2021-01-06 20:54:54,400 WARN L197 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2021-01-06 20:54:54,849 WARN L197 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2021-01-06 20:54:55,196 WARN L197 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2021-01-06 20:54:55,409 WARN L197 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2021-01-06 20:54:56,065 WARN L197 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2021-01-06 20:54:56,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:54:56,744 INFO L93 Difference]: Finished difference Result 2374 states and 3422 transitions. [2021-01-06 20:54:56,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-01-06 20:54:56,745 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 57 [2021-01-06 20:54:56,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:54:56,767 INFO L225 Difference]: With dead ends: 2374 [2021-01-06 20:54:56,768 INFO L226 Difference]: Without dead ends: 2146 [2021-01-06 20:54:56,773 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=188, Invalid=624, Unknown=0, NotChecked=0, Total=812 [2021-01-06 20:54:56,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2146 states. [2021-01-06 20:54:56,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2146 to 501. [2021-01-06 20:54:56,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 501 states. [2021-01-06 20:54:56,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 700 transitions. [2021-01-06 20:54:56,965 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 700 transitions. Word has length 57 [2021-01-06 20:54:56,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:54:56,965 INFO L481 AbstractCegarLoop]: Abstraction has 501 states and 700 transitions. [2021-01-06 20:54:56,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-01-06 20:54:56,965 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 700 transitions. [2021-01-06 20:54:56,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-01-06 20:54:56,966 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:54:56,966 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:54:56,966 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-01-06 20:54:56,967 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:54:56,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:54:56,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1168073188, now seen corresponding path program 1 times [2021-01-06 20:54:56,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:54:56,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103343356] [2021-01-06 20:54:56,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:54:56,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:54:57,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:54:57,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103343356] [2021-01-06 20:54:57,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:54:57,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-01-06 20:54:57,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048784636] [2021-01-06 20:54:57,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-06 20:54:57,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:54:57,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-06 20:54:57,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-01-06 20:54:57,614 INFO L87 Difference]: Start difference. First operand 501 states and 700 transitions. Second operand 15 states. [2021-01-06 20:54:58,385 WARN L197 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2021-01-06 20:54:58,693 WARN L197 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2021-01-06 20:54:58,867 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2021-01-06 20:54:59,039 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2021-01-06 20:54:59,229 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 37 [2021-01-06 20:54:59,839 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 33 [2021-01-06 20:55:01,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:55:01,246 INFO L93 Difference]: Finished difference Result 2244 states and 3242 transitions. [2021-01-06 20:55:01,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-01-06 20:55:01,247 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 57 [2021-01-06 20:55:01,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:55:01,258 INFO L225 Difference]: With dead ends: 2244 [2021-01-06 20:55:01,258 INFO L226 Difference]: Without dead ends: 2037 [2021-01-06 20:55:01,260 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=178, Invalid=634, Unknown=0, NotChecked=0, Total=812 [2021-01-06 20:55:01,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2037 states. [2021-01-06 20:55:01,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2037 to 497. [2021-01-06 20:55:01,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 497 states. [2021-01-06 20:55:01,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 695 transitions. [2021-01-06 20:55:01,472 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 695 transitions. Word has length 57 [2021-01-06 20:55:01,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:55:01,472 INFO L481 AbstractCegarLoop]: Abstraction has 497 states and 695 transitions. [2021-01-06 20:55:01,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-01-06 20:55:01,472 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 695 transitions. [2021-01-06 20:55:01,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-01-06 20:55:01,472 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:55:01,473 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:55:01,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-01-06 20:55:01,473 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:55:01,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:55:01,473 INFO L82 PathProgramCache]: Analyzing trace with hash -1784114015, now seen corresponding path program 1 times [2021-01-06 20:55:01,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:55:01,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811835423] [2021-01-06 20:55:01,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:55:01,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:55:02,093 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 20:55:02,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811835423] [2021-01-06 20:55:02,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:55:02,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-01-06 20:55:02,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198587655] [2021-01-06 20:55:02,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-06 20:55:02,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:55:02,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-06 20:55:02,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-01-06 20:55:02,095 INFO L87 Difference]: Start difference. First operand 497 states and 695 transitions. Second operand 13 states. [2021-01-06 20:55:02,629 WARN L197 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2021-01-06 20:55:02,772 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 29 [2021-01-06 20:55:04,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:55:04,386 INFO L93 Difference]: Finished difference Result 1681 states and 2416 transitions. [2021-01-06 20:55:04,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-01-06 20:55:04,387 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 57 [2021-01-06 20:55:04,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:55:04,393 INFO L225 Difference]: With dead ends: 1681 [2021-01-06 20:55:04,393 INFO L226 Difference]: Without dead ends: 1468 [2021-01-06 20:55:04,395 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=121, Invalid=385, Unknown=0, NotChecked=0, Total=506 [2021-01-06 20:55:04,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1468 states. [2021-01-06 20:55:04,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1468 to 486. [2021-01-06 20:55:04,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 486 states. [2021-01-06 20:55:04,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 680 transitions. [2021-01-06 20:55:04,565 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 680 transitions. Word has length 57 [2021-01-06 20:55:04,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:55:04,565 INFO L481 AbstractCegarLoop]: Abstraction has 486 states and 680 transitions. [2021-01-06 20:55:04,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-01-06 20:55:04,565 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 680 transitions. [2021-01-06 20:55:04,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-01-06 20:55:04,565 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:55:04,565 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:55:04,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-01-06 20:55:04,566 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:55:04,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:55:04,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1628002528, now seen corresponding path program 1 times [2021-01-06 20:55:04,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:55:04,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260070896] [2021-01-06 20:55:04,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:55:04,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:55:06,027 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 20:55:06,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260070896] [2021-01-06 20:55:06,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:55:06,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-01-06 20:55:06,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701585315] [2021-01-06 20:55:06,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-01-06 20:55:06,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:55:06,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-01-06 20:55:06,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2021-01-06 20:55:06,029 INFO L87 Difference]: Start difference. First operand 486 states and 680 transitions. Second operand 21 states. [2021-01-06 20:55:06,183 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 30 [2021-01-06 20:55:06,699 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 31 [2021-01-06 20:55:06,990 WARN L197 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 40 [2021-01-06 20:55:07,317 WARN L197 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 51 [2021-01-06 20:55:07,826 WARN L197 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 59 [2021-01-06 20:55:08,394 WARN L197 SmtUtils]: Spent 521.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 64 [2021-01-06 20:55:09,213 WARN L197 SmtUtils]: Spent 746.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 82 [2021-01-06 20:55:09,575 WARN L197 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2021-01-06 20:55:09,935 WARN L197 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2021-01-06 20:55:10,380 WARN L197 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 60 [2021-01-06 20:55:10,584 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2021-01-06 20:55:11,016 WARN L197 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 58 [2021-01-06 20:55:11,345 WARN L197 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 48 [2021-01-06 20:55:14,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:55:14,534 INFO L93 Difference]: Finished difference Result 2338 states and 3372 transitions. [2021-01-06 20:55:14,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-01-06 20:55:14,535 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 57 [2021-01-06 20:55:14,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:55:14,543 INFO L225 Difference]: With dead ends: 2338 [2021-01-06 20:55:14,543 INFO L226 Difference]: Without dead ends: 2126 [2021-01-06 20:55:14,544 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=304, Invalid=1178, Unknown=0, NotChecked=0, Total=1482 [2021-01-06 20:55:14,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2126 states. [2021-01-06 20:55:14,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2126 to 486. [2021-01-06 20:55:14,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 486 states. [2021-01-06 20:55:14,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 679 transitions. [2021-01-06 20:55:14,744 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 679 transitions. Word has length 57 [2021-01-06 20:55:14,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:55:14,745 INFO L481 AbstractCegarLoop]: Abstraction has 486 states and 679 transitions. [2021-01-06 20:55:14,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2021-01-06 20:55:14,745 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 679 transitions. [2021-01-06 20:55:14,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-01-06 20:55:14,745 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:55:14,745 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:55:14,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-01-06 20:55:14,746 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:55:14,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:55:14,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1010808515, now seen corresponding path program 1 times [2021-01-06 20:55:14,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:55:14,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372684240] [2021-01-06 20:55:14,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:55:14,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:55:15,803 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 20:55:15,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372684240] [2021-01-06 20:55:15,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:55:15,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-01-06 20:55:15,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855128851] [2021-01-06 20:55:15,805 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-01-06 20:55:15,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:55:15,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-01-06 20:55:15,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2021-01-06 20:55:15,806 INFO L87 Difference]: Start difference. First operand 486 states and 679 transitions. Second operand 18 states. [2021-01-06 20:55:16,445 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 30 [2021-01-06 20:55:16,737 WARN L197 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 50 [2021-01-06 20:55:17,067 WARN L197 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-01-06 20:55:17,506 WARN L197 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 75 [2021-01-06 20:55:17,836 WARN L197 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 63 [2021-01-06 20:55:18,170 WARN L197 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 63 [2021-01-06 20:55:18,509 WARN L197 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2021-01-06 20:55:19,250 WARN L197 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2021-01-06 20:55:19,824 WARN L197 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2021-01-06 20:55:22,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:55:22,770 INFO L93 Difference]: Finished difference Result 4319 states and 6277 transitions. [2021-01-06 20:55:22,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-01-06 20:55:22,771 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 57 [2021-01-06 20:55:22,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:55:22,792 INFO L225 Difference]: With dead ends: 4319 [2021-01-06 20:55:22,793 INFO L226 Difference]: Without dead ends: 4112 [2021-01-06 20:55:22,796 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=303, Invalid=1103, Unknown=0, NotChecked=0, Total=1406 [2021-01-06 20:55:22,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4112 states. [2021-01-06 20:55:23,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4112 to 491. [2021-01-06 20:55:23,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2021-01-06 20:55:23,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 685 transitions. [2021-01-06 20:55:23,019 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 685 transitions. Word has length 57 [2021-01-06 20:55:23,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:55:23,020 INFO L481 AbstractCegarLoop]: Abstraction has 491 states and 685 transitions. [2021-01-06 20:55:23,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-01-06 20:55:23,020 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 685 transitions. [2021-01-06 20:55:23,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-01-06 20:55:23,020 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:55:23,021 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:55:23,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-01-06 20:55:23,021 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:55:23,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:55:23,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1089654438, now seen corresponding path program 1 times [2021-01-06 20:55:23,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:55:23,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582589657] [2021-01-06 20:55:23,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:55:23,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:55:24,073 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 20:55:24,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582589657] [2021-01-06 20:55:24,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:55:24,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-01-06 20:55:24,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514855273] [2021-01-06 20:55:24,074 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-01-06 20:55:24,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:55:24,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-01-06 20:55:24,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2021-01-06 20:55:24,076 INFO L87 Difference]: Start difference. First operand 491 states and 685 transitions. Second operand 21 states. [2021-01-06 20:55:24,339 WARN L197 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 64 [2021-01-06 20:55:24,999 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 37 [2021-01-06 20:55:25,229 WARN L197 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-01-06 20:55:25,521 WARN L197 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 63 [2021-01-06 20:55:25,826 WARN L197 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2021-01-06 20:55:26,205 WARN L197 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 84 [2021-01-06 20:55:26,410 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2021-01-06 20:55:26,619 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2021-01-06 20:55:26,846 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 49 [2021-01-06 20:55:27,175 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2021-01-06 20:55:27,434 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2021-01-06 20:55:27,697 WARN L197 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2021-01-06 20:55:27,925 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2021-01-06 20:55:28,332 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2021-01-06 20:55:31,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:55:31,326 INFO L93 Difference]: Finished difference Result 3103 states and 4505 transitions. [2021-01-06 20:55:31,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-01-06 20:55:31,328 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 58 [2021-01-06 20:55:31,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:55:31,335 INFO L225 Difference]: With dead ends: 3103 [2021-01-06 20:55:31,336 INFO L226 Difference]: Without dead ends: 2896 [2021-01-06 20:55:31,338 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=355, Invalid=1537, Unknown=0, NotChecked=0, Total=1892 [2021-01-06 20:55:31,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2896 states. [2021-01-06 20:55:31,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2896 to 475. [2021-01-06 20:55:31,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 475 states. [2021-01-06 20:55:31,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 665 transitions. [2021-01-06 20:55:31,557 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 665 transitions. Word has length 58 [2021-01-06 20:55:31,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:55:31,558 INFO L481 AbstractCegarLoop]: Abstraction has 475 states and 665 transitions. [2021-01-06 20:55:31,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2021-01-06 20:55:31,558 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 665 transitions. [2021-01-06 20:55:31,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-01-06 20:55:31,558 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:55:31,559 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:55:31,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-01-06 20:55:31,559 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:55:31,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:55:31,560 INFO L82 PathProgramCache]: Analyzing trace with hash -2021266470, now seen corresponding path program 1 times [2021-01-06 20:55:31,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:55:31,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711567572] [2021-01-06 20:55:31,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:55:31,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:55:32,391 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2021-01-06 20:55:32,810 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 20:55:32,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711567572] [2021-01-06 20:55:32,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:55:32,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-01-06 20:55:32,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925205157] [2021-01-06 20:55:32,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-01-06 20:55:32,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:55:32,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-01-06 20:55:32,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2021-01-06 20:55:32,812 INFO L87 Difference]: Start difference. First operand 475 states and 665 transitions. Second operand 21 states. [2021-01-06 20:55:32,968 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2021-01-06 20:55:33,395 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2021-01-06 20:55:33,621 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2021-01-06 20:55:33,820 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2021-01-06 20:55:34,069 WARN L197 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2021-01-06 20:55:34,320 WARN L197 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2021-01-06 20:55:34,707 WARN L197 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-01-06 20:55:34,944 WARN L197 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2021-01-06 20:55:35,182 WARN L197 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2021-01-06 20:55:35,399 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2021-01-06 20:55:35,735 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2021-01-06 20:55:35,973 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2021-01-06 20:55:36,261 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2021-01-06 20:55:36,537 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2021-01-06 20:55:38,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:55:38,807 INFO L93 Difference]: Finished difference Result 1900 states and 2743 transitions. [2021-01-06 20:55:38,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-01-06 20:55:38,809 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 58 [2021-01-06 20:55:38,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:55:38,813 INFO L225 Difference]: With dead ends: 1900 [2021-01-06 20:55:38,813 INFO L226 Difference]: Without dead ends: 1683 [2021-01-06 20:55:38,814 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=322, Invalid=1160, Unknown=0, NotChecked=0, Total=1482 [2021-01-06 20:55:38,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1683 states. [2021-01-06 20:55:39,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1683 to 456. [2021-01-06 20:55:39,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 456 states. [2021-01-06 20:55:39,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 645 transitions. [2021-01-06 20:55:39,001 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 645 transitions. Word has length 58 [2021-01-06 20:55:39,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:55:39,002 INFO L481 AbstractCegarLoop]: Abstraction has 456 states and 645 transitions. [2021-01-06 20:55:39,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2021-01-06 20:55:39,002 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 645 transitions. [2021-01-06 20:55:39,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-01-06 20:55:39,003 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:55:39,003 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:55:39,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-01-06 20:55:39,004 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:55:39,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:55:39,004 INFO L82 PathProgramCache]: Analyzing trace with hash -773234718, now seen corresponding path program 1 times [2021-01-06 20:55:39,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:55:39,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333935529] [2021-01-06 20:55:39,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:55:39,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:55:39,071 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 20:55:39,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333935529] [2021-01-06 20:55:39,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:55:39,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:55:39,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649803698] [2021-01-06 20:55:39,075 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:55:39,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:55:39,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:55:39,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:55:39,076 INFO L87 Difference]: Start difference. First operand 456 states and 645 transitions. Second operand 3 states. [2021-01-06 20:55:39,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:55:39,703 INFO L93 Difference]: Finished difference Result 1190 states and 1709 transitions. [2021-01-06 20:55:39,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:55:39,705 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2021-01-06 20:55:39,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:55:39,708 INFO L225 Difference]: With dead ends: 1190 [2021-01-06 20:55:39,708 INFO L226 Difference]: Without dead ends: 792 [2021-01-06 20:55:39,709 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 20:55:39,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2021-01-06 20:55:40,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 790. [2021-01-06 20:55:40,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 790 states. [2021-01-06 20:55:40,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 790 states to 790 states and 1106 transitions. [2021-01-06 20:55:40,157 INFO L78 Accepts]: Start accepts. Automaton has 790 states and 1106 transitions. Word has length 76 [2021-01-06 20:55:40,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:55:40,158 INFO L481 AbstractCegarLoop]: Abstraction has 790 states and 1106 transitions. [2021-01-06 20:55:40,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:55:40,158 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states and 1106 transitions. [2021-01-06 20:55:40,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-01-06 20:55:40,159 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:55:40,160 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:55:40,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-01-06 20:55:40,160 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:55:40,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:55:40,161 INFO L82 PathProgramCache]: Analyzing trace with hash -2013626748, now seen corresponding path program 1 times [2021-01-06 20:55:40,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:55:40,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974631304] [2021-01-06 20:55:40,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:55:40,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:55:40,219 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 20:55:40,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974631304] [2021-01-06 20:55:40,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:55:40,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:55:40,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210432144] [2021-01-06 20:55:40,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:55:40,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:55:40,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:55:40,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:55:40,222 INFO L87 Difference]: Start difference. First operand 790 states and 1106 transitions. Second operand 3 states. [2021-01-06 20:55:41,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:55:41,071 INFO L93 Difference]: Finished difference Result 1975 states and 2783 transitions. [2021-01-06 20:55:41,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:55:41,072 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2021-01-06 20:55:41,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:55:41,074 INFO L225 Difference]: With dead ends: 1975 [2021-01-06 20:55:41,075 INFO L226 Difference]: Without dead ends: 1243 [2021-01-06 20:55:41,076 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 20:55:41,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1243 states. [2021-01-06 20:55:41,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1243 to 1165. [2021-01-06 20:55:41,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1165 states. [2021-01-06 20:55:41,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 1623 transitions. [2021-01-06 20:55:41,772 INFO L78 Accepts]: Start accepts. Automaton has 1165 states and 1623 transitions. Word has length 77 [2021-01-06 20:55:41,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:55:41,773 INFO L481 AbstractCegarLoop]: Abstraction has 1165 states and 1623 transitions. [2021-01-06 20:55:41,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:55:41,773 INFO L276 IsEmpty]: Start isEmpty. Operand 1165 states and 1623 transitions. [2021-01-06 20:55:41,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-01-06 20:55:41,773 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:55:41,774 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:55:41,774 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-01-06 20:55:41,774 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:55:41,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:55:41,775 INFO L82 PathProgramCache]: Analyzing trace with hash 31132410, now seen corresponding path program 1 times [2021-01-06 20:55:41,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:55:41,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584907327] [2021-01-06 20:55:41,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:55:41,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:55:41,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:55:41,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584907327] [2021-01-06 20:55:41,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:55:41,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:55:41,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833089320] [2021-01-06 20:55:41,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:55:41,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:55:41,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:55:41,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:55:41,848 INFO L87 Difference]: Start difference. First operand 1165 states and 1623 transitions. Second operand 3 states. [2021-01-06 20:55:43,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:55:43,193 INFO L93 Difference]: Finished difference Result 3259 states and 4537 transitions. [2021-01-06 20:55:43,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:55:43,194 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2021-01-06 20:55:43,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:55:43,199 INFO L225 Difference]: With dead ends: 3259 [2021-01-06 20:55:43,200 INFO L226 Difference]: Without dead ends: 2152 [2021-01-06 20:55:43,202 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 20:55:43,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2152 states. [2021-01-06 20:55:44,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2152 to 2030. [2021-01-06 20:55:44,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2030 states. [2021-01-06 20:55:44,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2030 states to 2030 states and 2794 transitions. [2021-01-06 20:55:44,257 INFO L78 Accepts]: Start accepts. Automaton has 2030 states and 2794 transitions. Word has length 78 [2021-01-06 20:55:44,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:55:44,257 INFO L481 AbstractCegarLoop]: Abstraction has 2030 states and 2794 transitions. [2021-01-06 20:55:44,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:55:44,257 INFO L276 IsEmpty]: Start isEmpty. Operand 2030 states and 2794 transitions. [2021-01-06 20:55:44,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-01-06 20:55:44,258 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:55:44,258 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:55:44,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-01-06 20:55:44,258 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:55:44,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:55:44,259 INFO L82 PathProgramCache]: Analyzing trace with hash 769651115, now seen corresponding path program 1 times [2021-01-06 20:55:44,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:55:44,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766296530] [2021-01-06 20:55:44,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:55:44,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:55:44,315 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 20:55:44,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766296530] [2021-01-06 20:55:44,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:55:44,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:55:44,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38897285] [2021-01-06 20:55:44,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:55:44,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:55:44,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:55:44,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:55:44,318 INFO L87 Difference]: Start difference. First operand 2030 states and 2794 transitions. Second operand 3 states. [2021-01-06 20:55:46,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:55:46,489 INFO L93 Difference]: Finished difference Result 5734 states and 7840 transitions. [2021-01-06 20:55:46,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:55:46,490 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2021-01-06 20:55:46,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:55:46,498 INFO L225 Difference]: With dead ends: 5734 [2021-01-06 20:55:46,498 INFO L226 Difference]: Without dead ends: 3762 [2021-01-06 20:55:46,501 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 20:55:46,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3762 states. [2021-01-06 20:55:48,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3762 to 3520. [2021-01-06 20:55:48,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3520 states. [2021-01-06 20:55:48,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3520 states to 3520 states and 4746 transitions. [2021-01-06 20:55:48,237 INFO L78 Accepts]: Start accepts. Automaton has 3520 states and 4746 transitions. Word has length 79 [2021-01-06 20:55:48,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:55:48,237 INFO L481 AbstractCegarLoop]: Abstraction has 3520 states and 4746 transitions. [2021-01-06 20:55:48,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:55:48,237 INFO L276 IsEmpty]: Start isEmpty. Operand 3520 states and 4746 transitions. [2021-01-06 20:55:48,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-01-06 20:55:48,239 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:55:48,239 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:55:48,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-01-06 20:55:48,239 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:55:48,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:55:48,240 INFO L82 PathProgramCache]: Analyzing trace with hash -1757386099, now seen corresponding path program 1 times [2021-01-06 20:55:48,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:55:48,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717964671] [2021-01-06 20:55:48,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:55:48,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:55:48,375 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 20:55:48,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717964671] [2021-01-06 20:55:48,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:55:48,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 20:55:48,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778321063] [2021-01-06 20:55:48,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 20:55:48,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:55:48,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 20:55:48,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-06 20:55:48,380 INFO L87 Difference]: Start difference. First operand 3520 states and 4746 transitions. Second operand 6 states. [2021-01-06 20:55:51,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:55:51,839 INFO L93 Difference]: Finished difference Result 5433 states and 7274 transitions. [2021-01-06 20:55:51,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 20:55:51,840 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2021-01-06 20:55:51,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:55:51,855 INFO L225 Difference]: With dead ends: 5433 [2021-01-06 20:55:51,856 INFO L226 Difference]: Without dead ends: 5431 [2021-01-06 20:55:51,859 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-01-06 20:55:51,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5431 states. [2021-01-06 20:55:53,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5431 to 3616. [2021-01-06 20:55:53,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3616 states. [2021-01-06 20:55:53,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3616 states to 3616 states and 4802 transitions. [2021-01-06 20:55:53,980 INFO L78 Accepts]: Start accepts. Automaton has 3616 states and 4802 transitions. Word has length 80 [2021-01-06 20:55:53,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:55:53,980 INFO L481 AbstractCegarLoop]: Abstraction has 3616 states and 4802 transitions. [2021-01-06 20:55:53,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 20:55:53,981 INFO L276 IsEmpty]: Start isEmpty. Operand 3616 states and 4802 transitions. [2021-01-06 20:55:53,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-01-06 20:55:53,981 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:55:53,981 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:55:53,981 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-01-06 20:55:53,984 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:55:53,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:55:53,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1852306095, now seen corresponding path program 1 times [2021-01-06 20:55:53,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:55:53,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060142374] [2021-01-06 20:55:53,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:55:54,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:55:54,041 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 20:55:54,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060142374] [2021-01-06 20:55:54,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:55:54,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:55:54,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374987543] [2021-01-06 20:55:54,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:55:54,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:55:54,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:55:54,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:55:54,044 INFO L87 Difference]: Start difference. First operand 3616 states and 4802 transitions. Second operand 3 states. [2021-01-06 20:55:55,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:55:55,919 INFO L93 Difference]: Finished difference Result 7276 states and 9684 transitions. [2021-01-06 20:55:55,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:55:55,921 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2021-01-06 20:55:55,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:55:55,935 INFO L225 Difference]: With dead ends: 7276 [2021-01-06 20:55:55,936 INFO L226 Difference]: Without dead ends: 3718 [2021-01-06 20:55:55,941 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 20:55:55,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3718 states. [2021-01-06 20:55:58,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3718 to 3716. [2021-01-06 20:55:58,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3716 states. [2021-01-06 20:55:58,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3716 states to 3716 states and 4866 transitions. [2021-01-06 20:55:58,091 INFO L78 Accepts]: Start accepts. Automaton has 3716 states and 4866 transitions. Word has length 80 [2021-01-06 20:55:58,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:55:58,091 INFO L481 AbstractCegarLoop]: Abstraction has 3716 states and 4866 transitions. [2021-01-06 20:55:58,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:55:58,092 INFO L276 IsEmpty]: Start isEmpty. Operand 3716 states and 4866 transitions. [2021-01-06 20:55:58,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-01-06 20:55:58,093 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:55:58,093 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:55:58,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-01-06 20:55:58,094 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:55:58,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:55:58,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1815794868, now seen corresponding path program 1 times [2021-01-06 20:55:58,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:55:58,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616864113] [2021-01-06 20:55:58,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:55:58,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:55:58,447 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:55:58,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616864113] [2021-01-06 20:55:58,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334702956] [2021-01-06 20:55:58,448 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 20:55:58,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:55:58,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-06 20:55:58,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 20:55:58,866 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 20:55:59,193 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-01-06 20:55:59,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 20:55:59,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6] total 15 [2021-01-06 20:55:59,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326278440] [2021-01-06 20:55:59,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-06 20:55:59,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:55:59,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-06 20:55:59,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2021-01-06 20:55:59,198 INFO L87 Difference]: Start difference. First operand 3716 states and 4866 transitions. Second operand 15 states. [2021-01-06 20:56:01,394 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2021-01-06 20:56:02,180 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 34 [2021-01-06 20:56:02,378 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2021-01-06 20:56:06,074 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2021-01-06 20:56:07,638 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 31 [2021-01-06 20:56:11,957 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2021-01-06 20:56:25,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:56:25,335 INFO L93 Difference]: Finished difference Result 30158 states and 39474 transitions. [2021-01-06 20:56:25,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-01-06 20:56:25,336 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 101 [2021-01-06 20:56:25,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:56:25,382 INFO L225 Difference]: With dead ends: 30158 [2021-01-06 20:56:25,382 INFO L226 Difference]: Without dead ends: 26500 [2021-01-06 20:56:25,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4454 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=1863, Invalid=9693, Unknown=0, NotChecked=0, Total=11556 [2021-01-06 20:56:25,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26500 states. [2021-01-06 20:56:32,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26500 to 12996. [2021-01-06 20:56:32,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12996 states. [2021-01-06 20:56:32,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12996 states to 12996 states and 17123 transitions. [2021-01-06 20:56:32,906 INFO L78 Accepts]: Start accepts. Automaton has 12996 states and 17123 transitions. Word has length 101 [2021-01-06 20:56:32,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:56:32,906 INFO L481 AbstractCegarLoop]: Abstraction has 12996 states and 17123 transitions. [2021-01-06 20:56:32,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-01-06 20:56:32,907 INFO L276 IsEmpty]: Start isEmpty. Operand 12996 states and 17123 transitions. [2021-01-06 20:56:32,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-01-06 20:56:32,909 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:56:32,909 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:56:33,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-01-06 20:56:33,124 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:56:33,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:56:33,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1244020718, now seen corresponding path program 1 times [2021-01-06 20:56:33,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:56:33,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218181029] [2021-01-06 20:56:33,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:56:33,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:56:33,610 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:56:33,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218181029] [2021-01-06 20:56:33,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258071812] [2021-01-06 20:56:33,611 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 20:56:33,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:56:33,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 28 conjunts are in the unsatisfiable core [2021-01-06 20:56:33,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 20:56:34,226 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 20:56:34,590 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 20:56:35,086 WARN L197 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 47 [2021-01-06 20:56:35,106 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 20:56:35,313 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2021-01-06 20:56:35,415 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 20:56:35,850 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 20:56:35,921 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 20:56:35,981 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 20:56:49,380 WARN L197 SmtUtils]: Spent 5.63 s on a formula simplification. DAG size of input: 574 DAG size of output: 44 [2021-01-06 20:56:50,264 WARN L197 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-01-06 20:56:50,985 WARN L197 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-01-06 20:56:51,171 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:56:51,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 20:56:51,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 17] total 27 [2021-01-06 20:56:51,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042492072] [2021-01-06 20:56:51,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-01-06 20:56:51,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:56:51,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-01-06 20:56:51,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=640, Unknown=0, NotChecked=0, Total=702 [2021-01-06 20:56:51,173 INFO L87 Difference]: Start difference. First operand 12996 states and 17123 transitions. Second operand 27 states. [2021-01-06 20:56:51,350 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 31 [2021-01-06 20:56:52,116 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 27 [2021-01-06 20:56:52,377 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 29 [2021-01-06 20:56:52,609 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 34 [2021-01-06 20:56:53,015 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 41 [2021-01-06 20:56:53,234 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 47 [2021-01-06 20:56:53,704 WARN L197 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 83 [2021-01-06 20:56:54,323 WARN L197 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 98 [2021-01-06 20:56:54,595 WARN L197 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2021-01-06 20:56:55,040 WARN L197 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 79 [2021-01-06 20:56:55,260 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2021-01-06 20:56:55,716 WARN L197 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 61 [2021-01-06 20:56:55,989 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2021-01-06 20:56:56,648 WARN L197 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 57 [2021-01-06 20:56:57,007 WARN L197 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2021-01-06 20:56:57,642 WARN L197 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 69 [2021-01-06 20:57:00,964 WARN L197 SmtUtils]: Spent 2.69 s on a formula simplification. DAG size of input: 122 DAG size of output: 92 [2021-01-06 20:57:04,188 WARN L197 SmtUtils]: Spent 2.33 s on a formula simplification. DAG size of input: 136 DAG size of output: 98 [2021-01-06 20:57:07,263 WARN L197 SmtUtils]: Spent 2.64 s on a formula simplification. DAG size of input: 125 DAG size of output: 95 [2021-01-06 20:57:07,528 WARN L197 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2021-01-06 20:57:07,763 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2021-01-06 20:57:08,128 WARN L197 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 72 [2021-01-06 20:57:08,499 WARN L197 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 63 [2021-01-06 20:57:08,835 WARN L197 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 60 [2021-01-06 20:57:11,562 WARN L197 SmtUtils]: Spent 2.38 s on a formula simplification. DAG size of input: 139 DAG size of output: 101 [2021-01-06 20:57:11,881 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2021-01-06 20:57:12,167 WARN L197 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2021-01-06 20:57:12,590 WARN L197 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 66 [2021-01-06 20:57:18,575 WARN L197 SmtUtils]: Spent 3.12 s on a formula simplification. DAG size of input: 139 DAG size of output: 101 [2021-01-06 20:57:18,883 WARN L197 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2021-01-06 20:57:19,317 WARN L197 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 66 [2021-01-06 20:57:23,825 WARN L197 SmtUtils]: Spent 3.42 s on a formula simplification. DAG size of input: 122 DAG size of output: 92 [2021-01-06 20:57:29,862 WARN L197 SmtUtils]: Spent 4.09 s on a formula simplification. DAG size of input: 127 DAG size of output: 89 [2021-01-06 20:57:34,665 WARN L197 SmtUtils]: Spent 2.79 s on a formula simplification. DAG size of input: 110 DAG size of output: 80 [2021-01-06 20:57:38,860 WARN L197 SmtUtils]: Spent 2.63 s on a formula simplification. DAG size of input: 107 DAG size of output: 85 [2021-01-06 20:57:40,105 WARN L197 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2021-01-06 20:57:40,464 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 32 [2021-01-06 20:57:41,026 WARN L197 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 78 [2021-01-06 20:58:17,999 WARN L197 SmtUtils]: Spent 31.95 s on a formula simplification. DAG size of input: 158 DAG size of output: 119 [2021-01-06 20:58:21,281 WARN L197 SmtUtils]: Spent 2.21 s on a formula simplification. DAG size of input: 90 DAG size of output: 76 [2021-01-06 20:58:22,101 WARN L197 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2021-01-06 20:58:26,983 WARN L197 SmtUtils]: Spent 4.08 s on a formula simplification. DAG size of input: 139 DAG size of output: 101