/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_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 10:25:04,376 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 10:25:04,381 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 10:25:04,439 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 10:25:04,440 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 10:25:04,444 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 10:25:04,447 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 10:25:04,474 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 10:25:04,480 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 10:25:04,489 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 10:25:04,495 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 10:25:04,497 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 10:25:04,497 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 10:25:04,508 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 10:25:04,513 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 10:25:04,516 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 10:25:04,522 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 10:25:04,525 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 10:25:04,529 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 10:25:04,540 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 10:25:04,542 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 10:25:04,545 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 10:25:04,546 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 10:25:04,549 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 10:25:04,561 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 10:25:04,562 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 10:25:04,562 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 10:25:04,565 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 10:25:04,565 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 10:25:04,566 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 10:25:04,567 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 10:25:04,568 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 10:25:04,570 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 10:25:04,571 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 10:25:04,572 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 10:25:04,572 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 10:25:04,573 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 10:25:04,580 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 10:25:04,581 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 10:25:04,582 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 10:25:04,583 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 10:25:04,586 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 10:25:04,634 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 10:25:04,635 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 10:25:04,639 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 10:25:04,639 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 10:25:04,640 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 10:25:04,640 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 10:25:04,640 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 10:25:04,640 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 10:25:04,641 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 10:25:04,641 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 10:25:04,642 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 10:25:04,642 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 10:25:04,643 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 10:25:04,643 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 10:25:04,643 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 10:25:04,644 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 10:25:04,644 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 10:25:04,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 10:25:04,644 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 10:25:04,645 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 10:25:04,645 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 10:25:04,645 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 10:25:04,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 10:25:04,646 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 10:25:04,646 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 10:25:04,646 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 10:25:05,122 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 10:25:05,155 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 10:25:05,158 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 10:25:05,160 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 10:25:05,161 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 10:25:05,162 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-23 10:25:05,246 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/fe6e8c8a5/65cc25fba3774a589a7851924690ac31/FLAGd529138ed [2020-12-23 10:25:05,847 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 10:25:05,848 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-23 10:25:05,871 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/fe6e8c8a5/65cc25fba3774a589a7851924690ac31/FLAGd529138ed [2020-12-23 10:25:06,113 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/fe6e8c8a5/65cc25fba3774a589a7851924690ac31 [2020-12-23 10:25:06,117 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 10:25:06,119 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 10:25:06,123 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 10:25:06,123 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 10:25:06,128 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 10:25:06,130 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 10:25:06" (1/1) ... [2020-12-23 10:25:06,132 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14cfb737 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:25:06, skipping insertion in model container [2020-12-23 10:25:06,132 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 10:25:06" (1/1) ... [2020-12-23 10:25:06,147 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 10:25:06,232 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[~ep12~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep13~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep21~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep23~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep31~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep32~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max1~0,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[~r2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max2~0,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[~r3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~init__r121~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r131~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r211~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r231~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r311~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r321~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r122~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r132~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r212~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r232~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r312~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r322~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_1766~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p12_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_1897~0,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,] [2020-12-23 10:25:06,562 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_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[6777,6790] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~nl3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p31_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p32_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_1~0,] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~nl2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p21_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p23_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_1~0,] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~nl1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p12_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p13_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_1~0,] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] [2020-12-23 10:25:06,594 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 10:25:06,609 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[~ep12~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep13~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep21~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep23~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep31~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep32~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max1~0,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[~r2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max2~0,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[~r3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~init__r121~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r131~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r211~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r231~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r311~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r321~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r122~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r132~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r212~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r232~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r312~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r322~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_1766~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p12_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_1897~0,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,] [2020-12-23 10:25:06,662 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_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[6777,6790] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~nl3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p31_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p32_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_1~0,] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~nl2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p21_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p23_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_1~0,] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~nl1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p12_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p13_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_1~0,] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] [2020-12-23 10:25:06,698 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 10:25:06,736 INFO L208 MainTranslator]: Completed translation [2020-12-23 10:25:06,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:25:06 WrapperNode [2020-12-23 10:25:06,736 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 10:25:06,739 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 10:25:06,739 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 10:25:06,739 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 10:25:06,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:25:06" (1/1) ... [2020-12-23 10:25:06,790 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:25:06" (1/1) ... [2020-12-23 10:25:06,874 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 10:25:06,875 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 10:25:06,875 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 10:25:06,876 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 10:25:06,887 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:25:06" (1/1) ... [2020-12-23 10:25:06,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:25:06" (1/1) ... [2020-12-23 10:25:06,899 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:25:06" (1/1) ... [2020-12-23 10:25:06,901 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:25:06" (1/1) ... [2020-12-23 10:25:06,926 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:25:06" (1/1) ... [2020-12-23 10:25:06,937 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:25:06" (1/1) ... [2020-12-23 10:25:06,940 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:25:06" (1/1) ... [2020-12-23 10:25:06,945 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 10:25:06,946 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 10:25:06,946 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 10:25:06,946 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 10:25:06,947 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:25:06" (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 [2020-12-23 10:25:07,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 10:25:07,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 10:25:07,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 10:25:07,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 10:25:07,868 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 10:25:07,869 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-23 10:25:07,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 10:25:07 BoogieIcfgContainer [2020-12-23 10:25:07,871 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 10:25:07,873 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 10:25:07,873 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 10:25:07,880 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 10:25:07,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 10:25:06" (1/3) ... [2020-12-23 10:25:07,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dc221e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 10:25:07, skipping insertion in model container [2020-12-23 10:25:07,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:25:06" (2/3) ... [2020-12-23 10:25:07,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dc221e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 10:25:07, skipping insertion in model container [2020-12-23 10:25:07,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 10:25:07" (3/3) ... [2020-12-23 10:25:07,885 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-23 10:25:07,891 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 10:25:07,897 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 10:25:07,915 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 10:25:07,943 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 10:25:07,943 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 10:25:07,943 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 10:25:07,943 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 10:25:07,944 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 10:25:07,944 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 10:25:07,944 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 10:25:07,944 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 10:25:07,962 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states. [2020-12-23 10:25:07,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-23 10:25:07,972 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:25:07,973 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:25:07,973 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:25:07,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:25:07,980 INFO L82 PathProgramCache]: Analyzing trace with hash -278043806, now seen corresponding path program 1 times [2020-12-23 10:25:07,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:25:07,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324429686] [2020-12-23 10:25:07,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:25:08,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:25:08,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:25:08,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324429686] [2020-12-23 10:25:08,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:25:08,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:25:08,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319933509] [2020-12-23 10:25:08,419 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:25:08,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:25:08,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:25:08,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:25:08,437 INFO L87 Difference]: Start difference. First operand 134 states. Second operand 3 states. [2020-12-23 10:25:08,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:25:08,548 INFO L93 Difference]: Finished difference Result 297 states and 500 transitions. [2020-12-23 10:25:08,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:25:08,550 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2020-12-23 10:25:08,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:25:08,564 INFO L225 Difference]: With dead ends: 297 [2020-12-23 10:25:08,564 INFO L226 Difference]: Without dead ends: 205 [2020-12-23 10:25:08,568 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 [2020-12-23 10:25:08,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-12-23 10:25:08,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 202. [2020-12-23 10:25:08,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-12-23 10:25:08,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 321 transitions. [2020-12-23 10:25:08,631 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 321 transitions. Word has length 50 [2020-12-23 10:25:08,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:25:08,631 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 321 transitions. [2020-12-23 10:25:08,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:25:08,632 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 321 transitions. [2020-12-23 10:25:08,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-23 10:25:08,634 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:25:08,635 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] [2020-12-23 10:25:08,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 10:25:08,635 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:25:08,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:25:08,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1333847823, now seen corresponding path program 1 times [2020-12-23 10:25:08,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:25:08,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728343341] [2020-12-23 10:25:08,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:25:08,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:25:08,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:25:08,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728343341] [2020-12-23 10:25:08,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:25:08,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:25:08,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632044523] [2020-12-23 10:25:08,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:25:08,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:25:08,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:25:08,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:25:08,746 INFO L87 Difference]: Start difference. First operand 202 states and 321 transitions. Second operand 3 states. [2020-12-23 10:25:08,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:25:08,822 INFO L93 Difference]: Finished difference Result 496 states and 805 transitions. [2020-12-23 10:25:08,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:25:08,823 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-12-23 10:25:08,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:25:08,827 INFO L225 Difference]: With dead ends: 496 [2020-12-23 10:25:08,827 INFO L226 Difference]: Without dead ends: 342 [2020-12-23 10:25:08,832 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 [2020-12-23 10:25:08,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2020-12-23 10:25:08,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 338. [2020-12-23 10:25:08,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2020-12-23 10:25:08,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 543 transitions. [2020-12-23 10:25:08,905 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 543 transitions. Word has length 52 [2020-12-23 10:25:08,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:25:08,906 INFO L481 AbstractCegarLoop]: Abstraction has 338 states and 543 transitions. [2020-12-23 10:25:08,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:25:08,906 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 543 transitions. [2020-12-23 10:25:08,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-23 10:25:08,909 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:25:08,910 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:25:08,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 10:25:08,917 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:25:08,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:25:08,920 INFO L82 PathProgramCache]: Analyzing trace with hash 329846722, now seen corresponding path program 1 times [2020-12-23 10:25:08,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:25:08,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452007960] [2020-12-23 10:25:08,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:25:08,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:25:09,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:25:09,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452007960] [2020-12-23 10:25:09,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:25:09,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:25:09,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139173533] [2020-12-23 10:25:09,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:25:09,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:25:09,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:25:09,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:25:09,050 INFO L87 Difference]: Start difference. First operand 338 states and 543 transitions. Second operand 3 states. [2020-12-23 10:25:09,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:25:09,140 INFO L93 Difference]: Finished difference Result 890 states and 1445 transitions. [2020-12-23 10:25:09,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:25:09,141 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2020-12-23 10:25:09,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:25:09,146 INFO L225 Difference]: With dead ends: 890 [2020-12-23 10:25:09,146 INFO L226 Difference]: Without dead ends: 600 [2020-12-23 10:25:09,151 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 [2020-12-23 10:25:09,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2020-12-23 10:25:09,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 594. [2020-12-23 10:25:09,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 594 states. [2020-12-23 10:25:09,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 955 transitions. [2020-12-23 10:25:09,215 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 955 transitions. Word has length 54 [2020-12-23 10:25:09,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:25:09,215 INFO L481 AbstractCegarLoop]: Abstraction has 594 states and 955 transitions. [2020-12-23 10:25:09,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:25:09,216 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 955 transitions. [2020-12-23 10:25:09,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-23 10:25:09,219 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:25:09,219 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] [2020-12-23 10:25:09,219 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 10:25:09,219 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:25:09,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:25:09,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1296814383, now seen corresponding path program 1 times [2020-12-23 10:25:09,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:25:09,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638203082] [2020-12-23 10:25:09,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:25:09,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:25:09,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:25:09,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638203082] [2020-12-23 10:25:09,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:25:09,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 10:25:09,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592389455] [2020-12-23 10:25:09,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 10:25:09,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:25:09,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 10:25:09,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 10:25:09,382 INFO L87 Difference]: Start difference. First operand 594 states and 955 transitions. Second operand 5 states. [2020-12-23 10:25:09,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:25:09,665 INFO L93 Difference]: Finished difference Result 2292 states and 3764 transitions. [2020-12-23 10:25:09,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 10:25:09,666 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 56 [2020-12-23 10:25:09,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:25:09,677 INFO L225 Difference]: With dead ends: 2292 [2020-12-23 10:25:09,677 INFO L226 Difference]: Without dead ends: 1746 [2020-12-23 10:25:09,678 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 10:25:09,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1746 states. [2020-12-23 10:25:09,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1746 to 1071. [2020-12-23 10:25:09,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1071 states. [2020-12-23 10:25:09,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1733 transitions. [2020-12-23 10:25:09,776 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1733 transitions. Word has length 56 [2020-12-23 10:25:09,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:25:09,777 INFO L481 AbstractCegarLoop]: Abstraction has 1071 states and 1733 transitions. [2020-12-23 10:25:09,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 10:25:09,780 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1733 transitions. [2020-12-23 10:25:09,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-23 10:25:09,783 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:25:09,784 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] [2020-12-23 10:25:09,784 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 10:25:09,785 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:25:09,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:25:09,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1484036003, now seen corresponding path program 1 times [2020-12-23 10:25:09,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:25:09,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160855304] [2020-12-23 10:25:09,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:25:09,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:25:09,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:25:09,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160855304] [2020-12-23 10:25:09,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:25:09,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 10:25:09,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299410948] [2020-12-23 10:25:09,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 10:25:09,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:25:09,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 10:25:09,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 10:25:09,947 INFO L87 Difference]: Start difference. First operand 1071 states and 1733 transitions. Second operand 4 states. [2020-12-23 10:25:10,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:25:10,151 INFO L93 Difference]: Finished difference Result 3136 states and 5140 transitions. [2020-12-23 10:25:10,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 10:25:10,152 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2020-12-23 10:25:10,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:25:10,165 INFO L225 Difference]: With dead ends: 3136 [2020-12-23 10:25:10,165 INFO L226 Difference]: Without dead ends: 2113 [2020-12-23 10:25:10,168 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 10:25:10,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2113 states. [2020-12-23 10:25:10,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2113 to 1583. [2020-12-23 10:25:10,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-12-23 10:25:10,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 2574 transitions. [2020-12-23 10:25:10,338 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 2574 transitions. Word has length 57 [2020-12-23 10:25:10,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:25:10,338 INFO L481 AbstractCegarLoop]: Abstraction has 1583 states and 2574 transitions. [2020-12-23 10:25:10,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 10:25:10,339 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 2574 transitions. [2020-12-23 10:25:10,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-23 10:25:10,340 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:25:10,340 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:25:10,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 10:25:10,341 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:25:10,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:25:10,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1297470346, now seen corresponding path program 1 times [2020-12-23 10:25:10,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:25:10,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732854939] [2020-12-23 10:25:10,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:25:10,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:25:10,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:25:10,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732854939] [2020-12-23 10:25:10,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:25:10,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 10:25:10,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986954094] [2020-12-23 10:25:10,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 10:25:10,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:25:10,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 10:25:10,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 10:25:10,463 INFO L87 Difference]: Start difference. First operand 1583 states and 2574 transitions. Second operand 4 states. [2020-12-23 10:25:10,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:25:10,722 INFO L93 Difference]: Finished difference Result 4604 states and 7538 transitions. [2020-12-23 10:25:10,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 10:25:10,722 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-12-23 10:25:10,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:25:10,742 INFO L225 Difference]: With dead ends: 4604 [2020-12-23 10:25:10,742 INFO L226 Difference]: Without dead ends: 3069 [2020-12-23 10:25:10,745 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 10:25:10,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3069 states. [2020-12-23 10:25:10,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3069 to 2314. [2020-12-23 10:25:10,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2314 states. [2020-12-23 10:25:10,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2314 states to 2314 states and 3761 transitions. [2020-12-23 10:25:10,971 INFO L78 Accepts]: Start accepts. Automaton has 2314 states and 3761 transitions. Word has length 58 [2020-12-23 10:25:10,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:25:10,972 INFO L481 AbstractCegarLoop]: Abstraction has 2314 states and 3761 transitions. [2020-12-23 10:25:10,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 10:25:10,973 INFO L276 IsEmpty]: Start isEmpty. Operand 2314 states and 3761 transitions. [2020-12-23 10:25:10,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-23 10:25:10,975 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:25:10,975 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:25:10,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 10:25:10,976 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:25:10,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:25:10,977 INFO L82 PathProgramCache]: Analyzing trace with hash -370820470, now seen corresponding path program 1 times [2020-12-23 10:25:10,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:25:10,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870478527] [2020-12-23 10:25:10,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:25:11,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:25:11,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:25:11,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870478527] [2020-12-23 10:25:11,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:25:11,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:25:11,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690864633] [2020-12-23 10:25:11,057 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:25:11,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:25:11,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:25:11,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:25:11,058 INFO L87 Difference]: Start difference. First operand 2314 states and 3761 transitions. Second operand 3 states. [2020-12-23 10:25:11,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:25:11,311 INFO L93 Difference]: Finished difference Result 5104 states and 8336 transitions. [2020-12-23 10:25:11,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:25:11,312 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2020-12-23 10:25:11,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:25:11,329 INFO L225 Difference]: With dead ends: 5104 [2020-12-23 10:25:11,329 INFO L226 Difference]: Without dead ends: 3495 [2020-12-23 10:25:11,335 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 [2020-12-23 10:25:11,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3495 states. [2020-12-23 10:25:11,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3495 to 3493. [2020-12-23 10:25:11,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3493 states. [2020-12-23 10:25:11,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3493 states to 3493 states and 5667 transitions. [2020-12-23 10:25:11,585 INFO L78 Accepts]: Start accepts. Automaton has 3493 states and 5667 transitions. Word has length 59 [2020-12-23 10:25:11,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:25:11,586 INFO L481 AbstractCegarLoop]: Abstraction has 3493 states and 5667 transitions. [2020-12-23 10:25:11,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:25:11,586 INFO L276 IsEmpty]: Start isEmpty. Operand 3493 states and 5667 transitions. [2020-12-23 10:25:11,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-23 10:25:11,587 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:25:11,587 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:25:11,588 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 10:25:11,588 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:25:11,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:25:11,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1594203451, now seen corresponding path program 1 times [2020-12-23 10:25:11,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:25:11,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564532918] [2020-12-23 10:25:11,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:25:11,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:25:11,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:25:11,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564532918] [2020-12-23 10:25:11,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:25:11,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:25:11,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382104808] [2020-12-23 10:25:11,633 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:25:11,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:25:11,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:25:11,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:25:11,634 INFO L87 Difference]: Start difference. First operand 3493 states and 5667 transitions. Second operand 3 states. [2020-12-23 10:25:11,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:25:11,960 INFO L93 Difference]: Finished difference Result 6911 states and 11267 transitions. [2020-12-23 10:25:11,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:25:11,961 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2020-12-23 10:25:11,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:25:11,987 INFO L225 Difference]: With dead ends: 6911 [2020-12-23 10:25:11,987 INFO L226 Difference]: Without dead ends: 4911 [2020-12-23 10:25:11,992 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 [2020-12-23 10:25:11,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4911 states. [2020-12-23 10:25:12,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4911 to 4909. [2020-12-23 10:25:12,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4909 states. [2020-12-23 10:25:12,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4909 states to 4909 states and 7945 transitions. [2020-12-23 10:25:12,342 INFO L78 Accepts]: Start accepts. Automaton has 4909 states and 7945 transitions. Word has length 59 [2020-12-23 10:25:12,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:25:12,343 INFO L481 AbstractCegarLoop]: Abstraction has 4909 states and 7945 transitions. [2020-12-23 10:25:12,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:25:12,343 INFO L276 IsEmpty]: Start isEmpty. Operand 4909 states and 7945 transitions. [2020-12-23 10:25:12,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-23 10:25:12,344 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:25:12,344 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:25:12,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 10:25:12,344 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:25:12,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:25:12,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1620263222, now seen corresponding path program 1 times [2020-12-23 10:25:12,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:25:12,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925638900] [2020-12-23 10:25:12,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:25:12,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:25:12,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:25:12,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925638900] [2020-12-23 10:25:12,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:25:12,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 10:25:12,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689969326] [2020-12-23 10:25:12,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 10:25:12,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:25:12,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 10:25:12,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 10:25:12,469 INFO L87 Difference]: Start difference. First operand 4909 states and 7945 transitions. Second operand 4 states. [2020-12-23 10:25:13,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:25:13,209 INFO L93 Difference]: Finished difference Result 15774 states and 25651 transitions. [2020-12-23 10:25:13,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 10:25:13,210 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-12-23 10:25:13,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:25:13,263 INFO L225 Difference]: With dead ends: 15774 [2020-12-23 10:25:13,263 INFO L226 Difference]: Without dead ends: 10993 [2020-12-23 10:25:13,272 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 10:25:13,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10993 states. [2020-12-23 10:25:13,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10993 to 7607. [2020-12-23 10:25:13,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7607 states. [2020-12-23 10:25:13,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7607 states to 7607 states and 12283 transitions. [2020-12-23 10:25:13,901 INFO L78 Accepts]: Start accepts. Automaton has 7607 states and 12283 transitions. Word has length 59 [2020-12-23 10:25:13,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:25:13,902 INFO L481 AbstractCegarLoop]: Abstraction has 7607 states and 12283 transitions. [2020-12-23 10:25:13,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 10:25:13,902 INFO L276 IsEmpty]: Start isEmpty. Operand 7607 states and 12283 transitions. [2020-12-23 10:25:13,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-23 10:25:13,903 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:25:13,903 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:25:13,906 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 10:25:13,907 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:25:13,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:25:13,907 INFO L82 PathProgramCache]: Analyzing trace with hash -515214271, now seen corresponding path program 1 times [2020-12-23 10:25:13,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:25:13,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97630798] [2020-12-23 10:25:13,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:25:13,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:25:13,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:25:13,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97630798] [2020-12-23 10:25:13,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:25:13,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:25:13,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891426906] [2020-12-23 10:25:13,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:25:13,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:25:13,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:25:13,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:25:13,959 INFO L87 Difference]: Start difference. First operand 7607 states and 12283 transitions. Second operand 3 states. [2020-12-23 10:25:14,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:25:14,706 INFO L93 Difference]: Finished difference Result 16681 states and 27278 transitions. [2020-12-23 10:25:14,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:25:14,707 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2020-12-23 10:25:14,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:25:14,736 INFO L225 Difference]: With dead ends: 16681 [2020-12-23 10:25:14,736 INFO L226 Difference]: Without dead ends: 11156 [2020-12-23 10:25:14,745 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 [2020-12-23 10:25:14,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11156 states. [2020-12-23 10:25:15,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11156 to 11154. [2020-12-23 10:25:15,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11154 states. [2020-12-23 10:25:15,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11154 states to 11154 states and 18059 transitions. [2020-12-23 10:25:15,439 INFO L78 Accepts]: Start accepts. Automaton has 11154 states and 18059 transitions. Word has length 59 [2020-12-23 10:25:15,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:25:15,439 INFO L481 AbstractCegarLoop]: Abstraction has 11154 states and 18059 transitions. [2020-12-23 10:25:15,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:25:15,440 INFO L276 IsEmpty]: Start isEmpty. Operand 11154 states and 18059 transitions. [2020-12-23 10:25:15,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-23 10:25:15,440 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:25:15,440 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:25:15,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 10:25:15,441 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:25:15,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:25:15,441 INFO L82 PathProgramCache]: Analyzing trace with hash 482860251, now seen corresponding path program 1 times [2020-12-23 10:25:15,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:25:15,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824871354] [2020-12-23 10:25:15,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:25:15,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:25:15,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:25:15,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824871354] [2020-12-23 10:25:15,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:25:15,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 10:25:15,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827944414] [2020-12-23 10:25:15,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 10:25:15,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:25:15,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 10:25:15,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 10:25:15,530 INFO L87 Difference]: Start difference. First operand 11154 states and 18059 transitions. Second operand 4 states. [2020-12-23 10:25:16,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:25:16,769 INFO L93 Difference]: Finished difference Result 32824 states and 53172 transitions. [2020-12-23 10:25:16,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 10:25:16,770 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2020-12-23 10:25:16,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:25:16,821 INFO L225 Difference]: With dead ends: 32824 [2020-12-23 10:25:16,821 INFO L226 Difference]: Without dead ends: 21679 [2020-12-23 10:25:16,839 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 10:25:16,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21679 states. [2020-12-23 10:25:18,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21679 to 21677. [2020-12-23 10:25:18,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21677 states. [2020-12-23 10:25:18,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21677 states to 21677 states and 34901 transitions. [2020-12-23 10:25:18,224 INFO L78 Accepts]: Start accepts. Automaton has 21677 states and 34901 transitions. Word has length 61 [2020-12-23 10:25:18,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:25:18,224 INFO L481 AbstractCegarLoop]: Abstraction has 21677 states and 34901 transitions. [2020-12-23 10:25:18,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 10:25:18,225 INFO L276 IsEmpty]: Start isEmpty. Operand 21677 states and 34901 transitions. [2020-12-23 10:25:18,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-23 10:25:18,225 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:25:18,226 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:25:18,226 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 10:25:18,226 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:25:18,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:25:18,226 INFO L82 PathProgramCache]: Analyzing trace with hash 749690503, now seen corresponding path program 1 times [2020-12-23 10:25:18,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:25:18,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664559410] [2020-12-23 10:25:18,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:25:18,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:25:18,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:25:18,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664559410] [2020-12-23 10:25:18,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:25:18,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:25:18,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790805340] [2020-12-23 10:25:18,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:25:18,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:25:18,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:25:18,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:25:18,257 INFO L87 Difference]: Start difference. First operand 21677 states and 34901 transitions. Second operand 3 states. [2020-12-23 10:25:20,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:25:20,393 INFO L93 Difference]: Finished difference Result 64993 states and 104641 transitions. [2020-12-23 10:25:20,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:25:20,394 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2020-12-23 10:25:20,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:25:20,505 INFO L225 Difference]: With dead ends: 64993 [2020-12-23 10:25:20,506 INFO L226 Difference]: Without dead ends: 43344 [2020-12-23 10:25:20,540 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 [2020-12-23 10:25:20,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43344 states. [2020-12-23 10:25:22,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43344 to 21679. [2020-12-23 10:25:22,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21679 states. [2020-12-23 10:25:22,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21679 states to 21679 states and 34903 transitions. [2020-12-23 10:25:22,263 INFO L78 Accepts]: Start accepts. Automaton has 21679 states and 34903 transitions. Word has length 62 [2020-12-23 10:25:22,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:25:22,263 INFO L481 AbstractCegarLoop]: Abstraction has 21679 states and 34903 transitions. [2020-12-23 10:25:22,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:25:22,263 INFO L276 IsEmpty]: Start isEmpty. Operand 21679 states and 34903 transitions. [2020-12-23 10:25:22,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-23 10:25:22,264 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:25:22,264 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] [2020-12-23 10:25:22,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-23 10:25:22,264 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:25:22,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:25:22,265 INFO L82 PathProgramCache]: Analyzing trace with hash 2144025067, now seen corresponding path program 1 times [2020-12-23 10:25:22,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:25:22,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978208836] [2020-12-23 10:25:22,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:25:22,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:25:22,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:25:22,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978208836] [2020-12-23 10:25:22,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:25:22,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:25:22,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461950162] [2020-12-23 10:25:22,320 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:25:22,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:25:22,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:25:22,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:25:22,321 INFO L87 Difference]: Start difference. First operand 21679 states and 34903 transitions. Second operand 3 states. [2020-12-23 10:25:24,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:25:24,827 INFO L93 Difference]: Finished difference Result 63647 states and 102554 transitions. [2020-12-23 10:25:24,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:25:24,827 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2020-12-23 10:25:24,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:25:24,894 INFO L225 Difference]: With dead ends: 63647 [2020-12-23 10:25:24,894 INFO L226 Difference]: Without dead ends: 42110 [2020-12-23 10:25:24,931 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 [2020-12-23 10:25:24,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42110 states. [2020-12-23 10:25:27,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42110 to 42108. [2020-12-23 10:25:27,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42108 states. [2020-12-23 10:25:27,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42108 states to 42108 states and 67397 transitions. [2020-12-23 10:25:27,664 INFO L78 Accepts]: Start accepts. Automaton has 42108 states and 67397 transitions. Word has length 63 [2020-12-23 10:25:27,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:25:27,665 INFO L481 AbstractCegarLoop]: Abstraction has 42108 states and 67397 transitions. [2020-12-23 10:25:27,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:25:27,665 INFO L276 IsEmpty]: Start isEmpty. Operand 42108 states and 67397 transitions. [2020-12-23 10:25:27,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-23 10:25:27,666 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:25:27,666 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] [2020-12-23 10:25:27,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-23 10:25:27,667 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:25:27,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:25:27,667 INFO L82 PathProgramCache]: Analyzing trace with hash -1309892562, now seen corresponding path program 1 times [2020-12-23 10:25:27,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:25:27,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312583295] [2020-12-23 10:25:27,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:25:27,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:25:27,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:25:27,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312583295] [2020-12-23 10:25:27,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:25:27,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 10:25:27,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467704906] [2020-12-23 10:25:27,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 10:25:27,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:25:27,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 10:25:27,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 10:25:27,770 INFO L87 Difference]: Start difference. First operand 42108 states and 67397 transitions. Second operand 5 states. [2020-12-23 10:25:33,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:25:33,183 INFO L93 Difference]: Finished difference Result 123662 states and 198032 transitions. [2020-12-23 10:25:33,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 10:25:33,184 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-12-23 10:25:33,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:25:33,310 INFO L225 Difference]: With dead ends: 123662 [2020-12-23 10:25:33,310 INFO L226 Difference]: Without dead ends: 81568 [2020-12-23 10:25:33,348 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 10:25:33,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81568 states. [2020-12-23 10:25:38,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81568 to 81566. [2020-12-23 10:25:38,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81566 states. [2020-12-23 10:25:38,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81566 states to 81566 states and 129753 transitions. [2020-12-23 10:25:38,969 INFO L78 Accepts]: Start accepts. Automaton has 81566 states and 129753 transitions. Word has length 63 [2020-12-23 10:25:38,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:25:38,969 INFO L481 AbstractCegarLoop]: Abstraction has 81566 states and 129753 transitions. [2020-12-23 10:25:38,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 10:25:38,969 INFO L276 IsEmpty]: Start isEmpty. Operand 81566 states and 129753 transitions. [2020-12-23 10:25:38,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-23 10:25:38,971 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:25:38,971 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] [2020-12-23 10:25:38,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-23 10:25:38,971 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:25:38,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:25:38,972 INFO L82 PathProgramCache]: Analyzing trace with hash 730213818, now seen corresponding path program 1 times [2020-12-23 10:25:38,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:25:38,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495309524] [2020-12-23 10:25:38,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:25:38,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:25:39,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:25:39,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495309524] [2020-12-23 10:25:39,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:25:39,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 10:25:39,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980517187] [2020-12-23 10:25:39,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 10:25:39,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:25:39,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 10:25:39,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 10:25:39,046 INFO L87 Difference]: Start difference. First operand 81566 states and 129753 transitions. Second operand 4 states. [2020-12-23 10:25:49,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:25:49,438 INFO L93 Difference]: Finished difference Result 239625 states and 381278 transitions. [2020-12-23 10:25:49,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 10:25:49,439 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2020-12-23 10:25:49,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:25:49,726 INFO L225 Difference]: With dead ends: 239625 [2020-12-23 10:25:49,726 INFO L226 Difference]: Without dead ends: 158115 [2020-12-23 10:25:49,806 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 10:25:49,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158115 states. [2020-12-23 10:26:00,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158115 to 158113. [2020-12-23 10:26:00,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158113 states. [2020-12-23 10:26:01,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158113 states to 158113 states and 249813 transitions. [2020-12-23 10:26:01,367 INFO L78 Accepts]: Start accepts. Automaton has 158113 states and 249813 transitions. Word has length 63 [2020-12-23 10:26:01,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:26:01,368 INFO L481 AbstractCegarLoop]: Abstraction has 158113 states and 249813 transitions. [2020-12-23 10:26:01,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 10:26:01,368 INFO L276 IsEmpty]: Start isEmpty. Operand 158113 states and 249813 transitions. [2020-12-23 10:26:01,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-23 10:26:01,371 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:26:01,371 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:26:01,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-23 10:26:01,371 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:26:01,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:26:01,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1038687238, now seen corresponding path program 1 times [2020-12-23 10:26:01,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:26:01,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486979385] [2020-12-23 10:26:01,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:26:01,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:26:01,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:26:01,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486979385] [2020-12-23 10:26:01,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:26:01,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:26:01,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497524706] [2020-12-23 10:26:01,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:26:01,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:26:01,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:26:01,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:26:01,422 INFO L87 Difference]: Start difference. First operand 158113 states and 249813 transitions. Second operand 3 states. [2020-12-23 10:26:23,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:26:23,129 INFO L93 Difference]: Finished difference Result 474187 states and 749206 transitions. [2020-12-23 10:26:23,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:26:23,130 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2020-12-23 10:26:23,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:26:23,748 INFO L225 Difference]: With dead ends: 474187 [2020-12-23 10:26:23,748 INFO L226 Difference]: Without dead ends: 316165 [2020-12-23 10:26:24,167 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 [2020-12-23 10:26:24,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316165 states. [2020-12-23 10:26:37,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316165 to 158123. [2020-12-23 10:26:37,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158123 states. [2020-12-23 10:26:37,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158123 states to 158123 states and 249823 transitions. [2020-12-23 10:26:37,906 INFO L78 Accepts]: Start accepts. Automaton has 158123 states and 249823 transitions. Word has length 64 [2020-12-23 10:26:37,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:26:37,906 INFO L481 AbstractCegarLoop]: Abstraction has 158123 states and 249823 transitions. [2020-12-23 10:26:37,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:26:37,906 INFO L276 IsEmpty]: Start isEmpty. Operand 158123 states and 249823 transitions. [2020-12-23 10:26:37,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-23 10:26:37,908 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:26:37,909 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:26:37,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-23 10:26:37,909 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:26:37,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:26:37,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1712489959, now seen corresponding path program 1 times [2020-12-23 10:26:37,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:26:37,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178829967] [2020-12-23 10:26:37,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:26:37,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:26:38,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:26:38,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178829967] [2020-12-23 10:26:38,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:26:38,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 10:26:38,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200053576] [2020-12-23 10:26:38,048 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 10:26:38,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:26:38,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 10:26:38,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 10:26:38,050 INFO L87 Difference]: Start difference. First operand 158123 states and 249823 transitions. Second operand 5 states. [2020-12-23 10:27:01,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:27:01,180 INFO L93 Difference]: Finished difference Result 444835 states and 705763 transitions. [2020-12-23 10:27:01,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 10:27:01,181 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-12-23 10:27:01,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:27:01,915 INFO L225 Difference]: With dead ends: 444835 [2020-12-23 10:27:01,915 INFO L226 Difference]: Without dead ends: 287409 [2020-12-23 10:27:02,062 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 10:27:02,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287409 states.