/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.3.4.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 10:27:35,392 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 10:27:35,395 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 10:27:35,439 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 10:27:35,440 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 10:27:35,441 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 10:27:35,443 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 10:27:35,445 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 10:27:35,460 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 10:27:35,461 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 10:27:35,463 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 10:27:35,464 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 10:27:35,464 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 10:27:35,466 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 10:27:35,467 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 10:27:35,468 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 10:27:35,469 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 10:27:35,470 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 10:27:35,472 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 10:27:35,475 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 10:27:35,477 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 10:27:35,478 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 10:27:35,480 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 10:27:35,481 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 10:27:35,484 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 10:27:35,485 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 10:27:35,485 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 10:27:35,486 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 10:27:35,487 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 10:27:35,488 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 10:27:35,489 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 10:27:35,490 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 10:27:35,490 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 10:27:35,491 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 10:27:35,493 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 10:27:35,493 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 10:27:35,494 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 10:27:35,494 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 10:27:35,494 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 10:27:35,496 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 10:27:35,496 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 10:27:35,497 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 10:27:35,526 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 10:27:35,526 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 10:27:35,528 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 10:27:35,528 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 10:27:35,528 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 10:27:35,529 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 10:27:35,529 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 10:27:35,529 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 10:27:35,529 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 10:27:35,530 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 10:27:35,530 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 10:27:35,530 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 10:27:35,530 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 10:27:35,531 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 10:27:35,531 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 10:27:35,531 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 10:27:35,531 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 10:27:35,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 10:27:35,532 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 10:27:35,532 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 10:27:35,533 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 10:27:35,533 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 10:27:35,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 10:27:35,533 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 10:27:35,534 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 10:27:35,534 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 10:27:35,938 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 10:27:35,963 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 10:27:35,967 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 10:27:35,969 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 10:27:35,970 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 10:27:35,971 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2020-12-23 10:27:36,062 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a079900fa/617e9e4894ac4c77b1123ec331e7bbed/FLAG8cf288cea [2020-12-23 10:27:36,883 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 10:27:36,884 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2020-12-23 10:27:36,899 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a079900fa/617e9e4894ac4c77b1123ec331e7bbed/FLAG8cf288cea [2020-12-23 10:27:37,136 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a079900fa/617e9e4894ac4c77b1123ec331e7bbed [2020-12-23 10:27:37,142 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 10:27:37,144 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 10:27:37,150 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 10:27:37,150 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 10:27:37,154 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 10:27:37,155 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 10:27:37" (1/1) ... [2020-12-23 10:27:37,158 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14971f5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:27:37, skipping insertion in model container [2020-12-23 10:27:37,158 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 10:27:37" (1/1) ... [2020-12-23 10:27:37,167 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 10:27:37,239 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_1757~0,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[~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[~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[~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_1888~0,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 10:27:37,476 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.3.4.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[6831,6844] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~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[~__return_1986~0,GLOBAL] 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 10:27:37,573 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 10:27:37,606 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_1757~0,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[~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[~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[~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_1888~0,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 10:27:37,672 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.3.4.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[6831,6844] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~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[~__return_1986~0,GLOBAL] 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 10:27:37,719 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 10:27:37,764 INFO L208 MainTranslator]: Completed translation [2020-12-23 10:27:37,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:27:37 WrapperNode [2020-12-23 10:27:37,766 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 10:27:37,769 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 10:27:37,770 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 10:27:37,770 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 10:27:37,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:27:37" (1/1) ... [2020-12-23 10:27:37,820 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:27:37" (1/1) ... [2020-12-23 10:27:37,915 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 10:27:37,916 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 10:27:37,916 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 10:27:37,916 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 10:27:37,931 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:27:37" (1/1) ... [2020-12-23 10:27:37,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:27:37" (1/1) ... [2020-12-23 10:27:37,935 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:27:37" (1/1) ... [2020-12-23 10:27:37,935 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:27:37" (1/1) ... [2020-12-23 10:27:37,949 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:27:37" (1/1) ... [2020-12-23 10:27:37,957 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:27:37" (1/1) ... [2020-12-23 10:27:37,961 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:27:37" (1/1) ... [2020-12-23 10:27:37,966 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 10:27:37,968 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 10:27:37,968 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 10:27:37,968 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 10:27:37,969 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:27:37" (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 10:27:38,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 10:27:38,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 10:27:38,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 10:27:38,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 10:27:39,174 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 10:27:39,175 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-23 10:27:39,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 10:27:39 BoogieIcfgContainer [2020-12-23 10:27:39,177 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 10:27:39,179 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 10:27:39,179 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 10:27:39,182 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 10:27:39,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 10:27:37" (1/3) ... [2020-12-23 10:27:39,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33dfb5ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 10:27:39, skipping insertion in model container [2020-12-23 10:27:39,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:27:37" (2/3) ... [2020-12-23 10:27:39,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33dfb5ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 10:27:39, skipping insertion in model container [2020-12-23 10:27:39,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 10:27:39" (3/3) ... [2020-12-23 10:27:39,186 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2020-12-23 10:27:39,193 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 10:27:39,198 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 10:27:39,238 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 10:27:39,279 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 10:27:39,279 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 10:27:39,279 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 10:27:39,279 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 10:27:39,279 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 10:27:39,279 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 10:27:39,279 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 10:27:39,280 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 10:27:39,302 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states. [2020-12-23 10:27:39,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-23 10:27:39,312 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:27:39,313 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 10:27:39,313 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:27:39,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:27:39,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1933157835, now seen corresponding path program 1 times [2020-12-23 10:27:39,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:27:39,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713715476] [2020-12-23 10:27:39,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:27:39,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:27:39,924 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 10:27:39,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713715476] [2020-12-23 10:27:39,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:27:39,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:27:39,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094743610] [2020-12-23 10:27:39,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:27:39,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:27:39,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:27:39,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:27:39,953 INFO L87 Difference]: Start difference. First operand 135 states. Second operand 3 states. [2020-12-23 10:27:40,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:27:40,066 INFO L93 Difference]: Finished difference Result 278 states and 475 transitions. [2020-12-23 10:27:40,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:27:40,068 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2020-12-23 10:27:40,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:27:40,084 INFO L225 Difference]: With dead ends: 278 [2020-12-23 10:27:40,084 INFO L226 Difference]: Without dead ends: 191 [2020-12-23 10:27:40,088 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 10:27:40,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-12-23 10:27:40,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 189. [2020-12-23 10:27:40,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-12-23 10:27:40,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 297 transitions. [2020-12-23 10:27:40,207 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 297 transitions. Word has length 57 [2020-12-23 10:27:40,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:27:40,208 INFO L481 AbstractCegarLoop]: Abstraction has 189 states and 297 transitions. [2020-12-23 10:27:40,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:27:40,208 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 297 transitions. [2020-12-23 10:27:40,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-23 10:27:40,213 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:27:40,213 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 10:27:40,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 10:27:40,214 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:27:40,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:27:40,218 INFO L82 PathProgramCache]: Analyzing trace with hash -1883490782, now seen corresponding path program 1 times [2020-12-23 10:27:40,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:27:40,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498359624] [2020-12-23 10:27:40,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:27:40,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:27:40,467 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 10:27:40,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498359624] [2020-12-23 10:27:40,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:27:40,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:27:40,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287614958] [2020-12-23 10:27:40,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:27:40,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:27:40,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:27:40,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:27:40,475 INFO L87 Difference]: Start difference. First operand 189 states and 297 transitions. Second operand 3 states. [2020-12-23 10:27:40,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:27:40,574 INFO L93 Difference]: Finished difference Result 445 states and 721 transitions. [2020-12-23 10:27:40,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:27:40,575 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2020-12-23 10:27:40,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:27:40,579 INFO L225 Difference]: With dead ends: 445 [2020-12-23 10:27:40,580 INFO L226 Difference]: Without dead ends: 310 [2020-12-23 10:27:40,582 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 10:27:40,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-12-23 10:27:40,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 308. [2020-12-23 10:27:40,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2020-12-23 10:27:40,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 493 transitions. [2020-12-23 10:27:40,615 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 493 transitions. Word has length 59 [2020-12-23 10:27:40,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:27:40,616 INFO L481 AbstractCegarLoop]: Abstraction has 308 states and 493 transitions. [2020-12-23 10:27:40,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:27:40,616 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 493 transitions. [2020-12-23 10:27:40,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-23 10:27:40,619 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:27:40,620 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 10:27:40,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 10:27:40,620 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:27:40,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:27:40,621 INFO L82 PathProgramCache]: Analyzing trace with hash -111872728, now seen corresponding path program 1 times [2020-12-23 10:27:40,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:27:40,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081374064] [2020-12-23 10:27:40,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:27:40,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:27:40,702 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 10:27:40,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081374064] [2020-12-23 10:27:40,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:27:40,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:27:40,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448426275] [2020-12-23 10:27:40,704 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:27:40,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:27:40,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:27:40,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:27:40,705 INFO L87 Difference]: Start difference. First operand 308 states and 493 transitions. Second operand 3 states. [2020-12-23 10:27:40,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:27:40,753 INFO L93 Difference]: Finished difference Result 563 states and 917 transitions. [2020-12-23 10:27:40,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:27:40,754 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2020-12-23 10:27:40,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:27:40,757 INFO L225 Difference]: With dead ends: 563 [2020-12-23 10:27:40,757 INFO L226 Difference]: Without dead ends: 428 [2020-12-23 10:27:40,759 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 10:27:40,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2020-12-23 10:27:40,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 426. [2020-12-23 10:27:40,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2020-12-23 10:27:40,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 687 transitions. [2020-12-23 10:27:40,803 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 687 transitions. Word has length 61 [2020-12-23 10:27:40,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:27:40,803 INFO L481 AbstractCegarLoop]: Abstraction has 426 states and 687 transitions. [2020-12-23 10:27:40,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:27:40,804 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 687 transitions. [2020-12-23 10:27:40,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-23 10:27:40,805 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:27:40,805 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 10:27:40,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 10:27:40,805 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:27:40,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:27:40,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1275396395, now seen corresponding path program 1 times [2020-12-23 10:27:40,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:27:40,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735360911] [2020-12-23 10:27:40,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:27:40,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:27:40,906 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 10:27:40,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735360911] [2020-12-23 10:27:40,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:27:40,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:27:40,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828541424] [2020-12-23 10:27:40,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:27:40,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:27:40,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:27:40,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:27:40,911 INFO L87 Difference]: Start difference. First operand 426 states and 687 transitions. Second operand 3 states. [2020-12-23 10:27:40,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:27:40,979 INFO L93 Difference]: Finished difference Result 1082 states and 1767 transitions. [2020-12-23 10:27:40,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:27:40,980 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2020-12-23 10:27:40,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:27:40,985 INFO L225 Difference]: With dead ends: 1082 [2020-12-23 10:27:40,985 INFO L226 Difference]: Without dead ends: 733 [2020-12-23 10:27:40,988 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 10:27:40,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2020-12-23 10:27:41,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 731. [2020-12-23 10:27:41,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 731 states. [2020-12-23 10:27:41,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 1181 transitions. [2020-12-23 10:27:41,047 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 1181 transitions. Word has length 61 [2020-12-23 10:27:41,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:27:41,048 INFO L481 AbstractCegarLoop]: Abstraction has 731 states and 1181 transitions. [2020-12-23 10:27:41,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:27:41,048 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 1181 transitions. [2020-12-23 10:27:41,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-23 10:27:41,050 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:27:41,050 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 10:27:41,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 10:27:41,050 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:27:41,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:27:41,051 INFO L82 PathProgramCache]: Analyzing trace with hash -1280827262, now seen corresponding path program 1 times [2020-12-23 10:27:41,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:27:41,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291616898] [2020-12-23 10:27:41,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:27:41,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:27:41,151 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 10:27:41,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291616898] [2020-12-23 10:27:41,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:27:41,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 10:27:41,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023769444] [2020-12-23 10:27:41,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 10:27:41,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:27:41,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 10:27:41,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 10:27:41,154 INFO L87 Difference]: Start difference. First operand 731 states and 1181 transitions. Second operand 5 states. [2020-12-23 10:27:41,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:27:41,456 INFO L93 Difference]: Finished difference Result 3004 states and 4923 transitions. [2020-12-23 10:27:41,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 10:27:41,460 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-12-23 10:27:41,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:27:41,476 INFO L225 Difference]: With dead ends: 3004 [2020-12-23 10:27:41,476 INFO L226 Difference]: Without dead ends: 2350 [2020-12-23 10:27:41,478 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 10:27:41,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2350 states. [2020-12-23 10:27:41,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2350 to 1385. [2020-12-23 10:27:41,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1385 states. [2020-12-23 10:27:41,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1385 states to 1385 states and 2237 transitions. [2020-12-23 10:27:41,593 INFO L78 Accepts]: Start accepts. Automaton has 1385 states and 2237 transitions. Word has length 63 [2020-12-23 10:27:41,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:27:41,597 INFO L481 AbstractCegarLoop]: Abstraction has 1385 states and 2237 transitions. [2020-12-23 10:27:41,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 10:27:41,597 INFO L276 IsEmpty]: Start isEmpty. Operand 1385 states and 2237 transitions. [2020-12-23 10:27:41,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-23 10:27:41,599 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:27:41,599 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 10:27:41,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 10:27:41,600 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:27:41,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:27:41,601 INFO L82 PathProgramCache]: Analyzing trace with hash -1113443658, now seen corresponding path program 1 times [2020-12-23 10:27:41,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:27:41,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120285863] [2020-12-23 10:27:41,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:27:41,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:27:41,728 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 10:27:41,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120285863] [2020-12-23 10:27:41,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:27:41,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 10:27:41,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13835022] [2020-12-23 10:27:41,731 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 10:27:41,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:27:41,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 10:27:41,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 10:27:41,733 INFO L87 Difference]: Start difference. First operand 1385 states and 2237 transitions. Second operand 4 states. [2020-12-23 10:27:41,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:27:41,969 INFO L93 Difference]: Finished difference Result 4443 states and 7230 transitions. [2020-12-23 10:27:41,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 10:27:41,970 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2020-12-23 10:27:42,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:27:42,027 INFO L225 Difference]: With dead ends: 4443 [2020-12-23 10:27:42,027 INFO L226 Difference]: Without dead ends: 3137 [2020-12-23 10:27:42,030 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 10:27:42,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3137 states. [2020-12-23 10:27:42,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3137 to 2575. [2020-12-23 10:27:42,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2575 states. [2020-12-23 10:27:42,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2575 states to 2575 states and 4153 transitions. [2020-12-23 10:27:42,224 INFO L78 Accepts]: Start accepts. Automaton has 2575 states and 4153 transitions. Word has length 64 [2020-12-23 10:27:42,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:27:42,225 INFO L481 AbstractCegarLoop]: Abstraction has 2575 states and 4153 transitions. [2020-12-23 10:27:42,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 10:27:42,225 INFO L276 IsEmpty]: Start isEmpty. Operand 2575 states and 4153 transitions. [2020-12-23 10:27:42,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-23 10:27:42,228 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:27:42,228 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 10:27:42,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 10:27:42,230 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:27:42,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:27:42,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1248232611, now seen corresponding path program 1 times [2020-12-23 10:27:42,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:27:42,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352154012] [2020-12-23 10:27:42,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:27:42,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:27:42,344 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 10:27:42,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352154012] [2020-12-23 10:27:42,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:27:42,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:27:42,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671326351] [2020-12-23 10:27:42,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:27:42,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:27:42,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:27:42,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:27:42,347 INFO L87 Difference]: Start difference. First operand 2575 states and 4153 transitions. Second operand 3 states. [2020-12-23 10:27:42,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:27:42,597 INFO L93 Difference]: Finished difference Result 4939 states and 8007 transitions. [2020-12-23 10:27:42,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:27:42,598 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2020-12-23 10:27:42,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:27:42,617 INFO L225 Difference]: With dead ends: 4939 [2020-12-23 10:27:42,617 INFO L226 Difference]: Without dead ends: 3555 [2020-12-23 10:27:42,621 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 10:27:42,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3555 states. [2020-12-23 10:27:42,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3555 to 3553. [2020-12-23 10:27:42,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3553 states. [2020-12-23 10:27:42,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3553 states to 3553 states and 5707 transitions. [2020-12-23 10:27:42,868 INFO L78 Accepts]: Start accepts. Automaton has 3553 states and 5707 transitions. Word has length 64 [2020-12-23 10:27:42,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:27:42,868 INFO L481 AbstractCegarLoop]: Abstraction has 3553 states and 5707 transitions. [2020-12-23 10:27:42,868 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:27:42,868 INFO L276 IsEmpty]: Start isEmpty. Operand 3553 states and 5707 transitions. [2020-12-23 10:27:42,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-23 10:27:42,870 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:27:42,871 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 10:27:42,871 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 10:27:42,871 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:27:42,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:27:42,873 INFO L82 PathProgramCache]: Analyzing trace with hash 616386787, now seen corresponding path program 1 times [2020-12-23 10:27:42,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:27:42,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078380870] [2020-12-23 10:27:42,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:27:42,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:27:42,932 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 10:27:42,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078380870] [2020-12-23 10:27:42,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:27:42,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:27:42,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368954543] [2020-12-23 10:27:42,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:27:42,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:27:42,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:27:42,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:27:42,936 INFO L87 Difference]: Start difference. First operand 3553 states and 5707 transitions. Second operand 3 states. [2020-12-23 10:27:43,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:27:43,324 INFO L93 Difference]: Finished difference Result 8360 states and 13539 transitions. [2020-12-23 10:27:43,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:27:43,324 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2020-12-23 10:27:43,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:27:43,356 INFO L225 Difference]: With dead ends: 8360 [2020-12-23 10:27:43,357 INFO L226 Difference]: Without dead ends: 4889 [2020-12-23 10:27:43,365 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 10:27:43,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4889 states. [2020-12-23 10:27:43,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4889 to 4887. [2020-12-23 10:27:43,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4887 states. [2020-12-23 10:27:43,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4887 states to 4887 states and 7908 transitions. [2020-12-23 10:27:43,710 INFO L78 Accepts]: Start accepts. Automaton has 4887 states and 7908 transitions. Word has length 64 [2020-12-23 10:27:43,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:27:43,710 INFO L481 AbstractCegarLoop]: Abstraction has 4887 states and 7908 transitions. [2020-12-23 10:27:43,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:27:43,711 INFO L276 IsEmpty]: Start isEmpty. Operand 4887 states and 7908 transitions. [2020-12-23 10:27:43,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-23 10:27:43,717 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:27:43,718 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 10:27:43,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 10:27:43,718 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:27:43,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:27:43,719 INFO L82 PathProgramCache]: Analyzing trace with hash -214961207, now seen corresponding path program 1 times [2020-12-23 10:27:43,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:27:43,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642227541] [2020-12-23 10:27:43,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:27:43,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:27:43,841 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 10:27:43,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642227541] [2020-12-23 10:27:43,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:27:43,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 10:27:43,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701298389] [2020-12-23 10:27:43,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 10:27:43,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:27:43,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 10:27:43,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 10:27:43,852 INFO L87 Difference]: Start difference. First operand 4887 states and 7908 transitions. Second operand 4 states. [2020-12-23 10:27:44,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:27:44,521 INFO L93 Difference]: Finished difference Result 13998 states and 22772 transitions. [2020-12-23 10:27:44,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 10:27:44,522 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2020-12-23 10:27:44,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:27:44,595 INFO L225 Difference]: With dead ends: 13998 [2020-12-23 10:27:44,595 INFO L226 Difference]: Without dead ends: 9193 [2020-12-23 10:27:44,605 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 10:27:44,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9193 states. [2020-12-23 10:27:45,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9193 to 7815. [2020-12-23 10:27:45,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7815 states. [2020-12-23 10:27:45,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7815 states to 7815 states and 12584 transitions. [2020-12-23 10:27:45,241 INFO L78 Accepts]: Start accepts. Automaton has 7815 states and 12584 transitions. Word has length 65 [2020-12-23 10:27:45,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:27:45,242 INFO L481 AbstractCegarLoop]: Abstraction has 7815 states and 12584 transitions. [2020-12-23 10:27:45,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 10:27:45,242 INFO L276 IsEmpty]: Start isEmpty. Operand 7815 states and 12584 transitions. [2020-12-23 10:27:45,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-23 10:27:45,243 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:27:45,243 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:27:45,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 10:27:45,243 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:27:45,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:27:45,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1872749021, now seen corresponding path program 1 times [2020-12-23 10:27:45,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:27:45,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52103131] [2020-12-23 10:27:45,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:27:45,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:27:45,384 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 10:27:45,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52103131] [2020-12-23 10:27:45,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:27:45,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 10:27:45,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067275500] [2020-12-23 10:27:45,387 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 10:27:45,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:27:45,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 10:27:45,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 10:27:45,392 INFO L87 Difference]: Start difference. First operand 7815 states and 12584 transitions. Second operand 4 states. [2020-12-23 10:27:46,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:27:46,406 INFO L93 Difference]: Finished difference Result 22755 states and 36805 transitions. [2020-12-23 10:27:46,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 10:27:46,406 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2020-12-23 10:27:46,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:27:46,456 INFO L225 Difference]: With dead ends: 22755 [2020-12-23 10:27:46,456 INFO L226 Difference]: Without dead ends: 15022 [2020-12-23 10:27:46,475 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 10:27:46,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15022 states. [2020-12-23 10:27:47,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15022 to 12299. [2020-12-23 10:27:47,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12299 states. [2020-12-23 10:27:47,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12299 states to 12299 states and 19696 transitions. [2020-12-23 10:27:47,487 INFO L78 Accepts]: Start accepts. Automaton has 12299 states and 19696 transitions. Word has length 66 [2020-12-23 10:27:47,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:27:47,488 INFO L481 AbstractCegarLoop]: Abstraction has 12299 states and 19696 transitions. [2020-12-23 10:27:47,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 10:27:47,488 INFO L276 IsEmpty]: Start isEmpty. Operand 12299 states and 19696 transitions. [2020-12-23 10:27:47,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-23 10:27:47,489 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:27:47,489 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:27:47,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 10:27:47,490 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:27:47,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:27:47,490 INFO L82 PathProgramCache]: Analyzing trace with hash -1396799506, now seen corresponding path program 1 times [2020-12-23 10:27:47,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:27:47,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513716244] [2020-12-23 10:27:47,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:27:47,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:27:47,655 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 10:27:47,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513716244] [2020-12-23 10:27:47,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:27:47,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 10:27:47,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714108105] [2020-12-23 10:27:47,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 10:27:47,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:27:47,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 10:27:47,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 10:27:47,659 INFO L87 Difference]: Start difference. First operand 12299 states and 19696 transitions. Second operand 5 states. [2020-12-23 10:27:49,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:27:49,014 INFO L93 Difference]: Finished difference Result 29256 states and 47101 transitions. [2020-12-23 10:27:49,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 10:27:49,015 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2020-12-23 10:27:49,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:27:49,067 INFO L225 Difference]: With dead ends: 29256 [2020-12-23 10:27:49,067 INFO L226 Difference]: Without dead ends: 17039 [2020-12-23 10:27:49,089 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 10:27:49,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17039 states. [2020-12-23 10:27:50,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17039 to 12299. [2020-12-23 10:27:50,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12299 states. [2020-12-23 10:27:50,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12299 states to 12299 states and 19546 transitions. [2020-12-23 10:27:50,305 INFO L78 Accepts]: Start accepts. Automaton has 12299 states and 19546 transitions. Word has length 68 [2020-12-23 10:27:50,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:27:50,306 INFO L481 AbstractCegarLoop]: Abstraction has 12299 states and 19546 transitions. [2020-12-23 10:27:50,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 10:27:50,306 INFO L276 IsEmpty]: Start isEmpty. Operand 12299 states and 19546 transitions. [2020-12-23 10:27:50,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-23 10:27:50,307 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:27:50,307 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:27:50,307 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 10:27:50,308 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:27:50,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:27:50,308 INFO L82 PathProgramCache]: Analyzing trace with hash -164512453, now seen corresponding path program 1 times [2020-12-23 10:27:50,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:27:50,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157492412] [2020-12-23 10:27:50,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:27:50,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:27:50,464 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 10:27:50,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157492412] [2020-12-23 10:27:50,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:27:50,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 10:27:50,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314424701] [2020-12-23 10:27:50,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 10:27:50,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:27:50,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 10:27:50,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 10:27:50,467 INFO L87 Difference]: Start difference. First operand 12299 states and 19546 transitions. Second operand 4 states. [2020-12-23 10:27:52,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:27:52,207 INFO L93 Difference]: Finished difference Result 36403 states and 57839 transitions. [2020-12-23 10:27:52,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 10:27:52,208 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2020-12-23 10:27:52,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:27:52,282 INFO L225 Difference]: With dead ends: 36403 [2020-12-23 10:27:52,282 INFO L226 Difference]: Without dead ends: 24113 [2020-12-23 10:27:52,306 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 10:27:52,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24113 states. [2020-12-23 10:27:53,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24113 to 24111. [2020-12-23 10:27:53,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24111 states. [2020-12-23 10:27:53,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24111 states to 24111 states and 38102 transitions. [2020-12-23 10:27:53,884 INFO L78 Accepts]: Start accepts. Automaton has 24111 states and 38102 transitions. Word has length 71 [2020-12-23 10:27:53,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:27:53,885 INFO L481 AbstractCegarLoop]: Abstraction has 24111 states and 38102 transitions. [2020-12-23 10:27:53,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 10:27:53,885 INFO L276 IsEmpty]: Start isEmpty. Operand 24111 states and 38102 transitions. [2020-12-23 10:27:53,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-23 10:27:53,886 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:27:53,886 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:27:53,887 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-23 10:27:53,887 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:27:53,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:27:53,888 INFO L82 PathProgramCache]: Analyzing trace with hash 667892135, now seen corresponding path program 1 times [2020-12-23 10:27:53,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:27:53,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013844294] [2020-12-23 10:27:53,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:27:53,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:27:53,933 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 10:27:53,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013844294] [2020-12-23 10:27:53,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:27:53,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:27:53,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470144761] [2020-12-23 10:27:53,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:27:53,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:27:53,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:27:53,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:27:53,937 INFO L87 Difference]: Start difference. First operand 24111 states and 38102 transitions. Second operand 3 states. [2020-12-23 10:27:56,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:27:56,451 INFO L93 Difference]: Finished difference Result 72295 states and 114244 transitions. [2020-12-23 10:27:56,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:27:56,452 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2020-12-23 10:27:56,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:27:56,578 INFO L225 Difference]: With dead ends: 72295 [2020-12-23 10:27:56,578 INFO L226 Difference]: Without dead ends: 48212 [2020-12-23 10:27:56,619 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 10:27:56,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48212 states. [2020-12-23 10:27:58,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48212 to 24113. [2020-12-23 10:27:58,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24113 states. [2020-12-23 10:27:58,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24113 states to 24113 states and 38104 transitions. [2020-12-23 10:27:58,634 INFO L78 Accepts]: Start accepts. Automaton has 24113 states and 38104 transitions. Word has length 72 [2020-12-23 10:27:58,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:27:58,634 INFO L481 AbstractCegarLoop]: Abstraction has 24113 states and 38104 transitions. [2020-12-23 10:27:58,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:27:58,634 INFO L276 IsEmpty]: Start isEmpty. Operand 24113 states and 38104 transitions. [2020-12-23 10:27:58,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-23 10:27:58,636 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:27:58,636 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:27:58,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-23 10:27:58,636 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:27:58,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:27:58,637 INFO L82 PathProgramCache]: Analyzing trace with hash -808520295, now seen corresponding path program 1 times [2020-12-23 10:27:58,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:27:58,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062827278] [2020-12-23 10:27:58,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:27:58,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:27:58,719 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 10:27:58,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062827278] [2020-12-23 10:27:58,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:27:58,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:27:58,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622972905] [2020-12-23 10:27:58,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:27:58,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:27:58,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:27:58,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:27:58,722 INFO L87 Difference]: Start difference. First operand 24113 states and 38104 transitions. Second operand 3 states. [2020-12-23 10:28:01,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:28:01,548 INFO L93 Difference]: Finished difference Result 70655 states and 111703 transitions. [2020-12-23 10:28:01,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:28:01,550 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2020-12-23 10:28:01,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:28:01,642 INFO L225 Difference]: With dead ends: 70655 [2020-12-23 10:28:01,642 INFO L226 Difference]: Without dead ends: 46698 [2020-12-23 10:28:01,675 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 10:28:01,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46698 states. [2020-12-23 10:28:04,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46698 to 46696. [2020-12-23 10:28:04,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46696 states. [2020-12-23 10:28:05,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46696 states to 46696 states and 73259 transitions. [2020-12-23 10:28:05,061 INFO L78 Accepts]: Start accepts. Automaton has 46696 states and 73259 transitions. Word has length 73 [2020-12-23 10:28:05,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:28:05,061 INFO L481 AbstractCegarLoop]: Abstraction has 46696 states and 73259 transitions. [2020-12-23 10:28:05,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:28:05,061 INFO L276 IsEmpty]: Start isEmpty. Operand 46696 states and 73259 transitions. [2020-12-23 10:28:05,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-23 10:28:05,062 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:28:05,063 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:28:05,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-23 10:28:05,063 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:28:05,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:28:05,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1547459556, now seen corresponding path program 1 times [2020-12-23 10:28:05,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:28:05,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831629213] [2020-12-23 10:28:05,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:28:05,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:28:05,215 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 10:28:05,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831629213] [2020-12-23 10:28:05,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:28:05,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 10:28:05,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369292875] [2020-12-23 10:28:05,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 10:28:05,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:28:05,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 10:28:05,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 10:28:05,218 INFO L87 Difference]: Start difference. First operand 46696 states and 73259 transitions. Second operand 5 states. [2020-12-23 10:28:11,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:28:11,245 INFO L93 Difference]: Finished difference Result 137988 states and 216428 transitions. [2020-12-23 10:28:11,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 10:28:11,245 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-12-23 10:28:11,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:28:11,475 INFO L225 Difference]: With dead ends: 137988 [2020-12-23 10:28:11,476 INFO L226 Difference]: Without dead ends: 91306 [2020-12-23 10:28:11,529 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 10:28:11,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91306 states. [2020-12-23 10:28:17,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91306 to 91304. [2020-12-23 10:28:17,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91304 states. [2020-12-23 10:28:18,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91304 states to 91304 states and 142371 transitions. [2020-12-23 10:28:18,144 INFO L78 Accepts]: Start accepts. Automaton has 91304 states and 142371 transitions. Word has length 73 [2020-12-23 10:28:18,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:28:18,145 INFO L481 AbstractCegarLoop]: Abstraction has 91304 states and 142371 transitions. [2020-12-23 10:28:18,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 10:28:18,145 INFO L276 IsEmpty]: Start isEmpty. Operand 91304 states and 142371 transitions. [2020-12-23 10:28:18,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-23 10:28:18,146 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:28:18,147 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:28:18,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-23 10:28:18,147 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:28:18,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:28:18,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1975872346, now seen corresponding path program 1 times [2020-12-23 10:28:18,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:28:18,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930248441] [2020-12-23 10:28:18,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:28:18,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:28:18,242 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 10:28:18,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930248441] [2020-12-23 10:28:18,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:28:18,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 10:28:18,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238674009] [2020-12-23 10:28:18,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 10:28:18,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:28:18,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 10:28:18,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 10:28:18,245 INFO L87 Difference]: Start difference. First operand 91304 states and 142371 transitions. Second operand 4 states. [2020-12-23 10:28:31,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:28:31,396 INFO L93 Difference]: Finished difference Result 267879 states and 417692 transitions. [2020-12-23 10:28:31,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 10:28:31,396 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2020-12-23 10:28:31,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:28:31,824 INFO L225 Difference]: With dead ends: 267879 [2020-12-23 10:28:31,824 INFO L226 Difference]: Without dead ends: 176631 [2020-12-23 10:28:31,953 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 10:28:32,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176631 states. [2020-12-23 10:28:44,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176631 to 176629. [2020-12-23 10:28:44,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176629 states. [2020-12-23 10:28:44,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176629 states to 176629 states and 273369 transitions. [2020-12-23 10:28:44,920 INFO L78 Accepts]: Start accepts. Automaton has 176629 states and 273369 transitions. Word has length 73 [2020-12-23 10:28:44,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:28:44,920 INFO L481 AbstractCegarLoop]: Abstraction has 176629 states and 273369 transitions. [2020-12-23 10:28:44,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 10:28:44,921 INFO L276 IsEmpty]: Start isEmpty. Operand 176629 states and 273369 transitions. [2020-12-23 10:28:44,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-23 10:28:44,924 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:28:44,924 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:28:44,924 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-23 10:28:44,924 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:28:44,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:28:44,925 INFO L82 PathProgramCache]: Analyzing trace with hash -2004902810, now seen corresponding path program 1 times [2020-12-23 10:28:44,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:28:44,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436236142] [2020-12-23 10:28:44,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:28:44,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:28:44,958 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 10:28:44,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436236142] [2020-12-23 10:28:44,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:28:44,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:28:44,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166036867] [2020-12-23 10:28:44,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:28:44,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:28:44,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:28:44,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:28:44,960 INFO L87 Difference]: Start difference. First operand 176629 states and 273369 transitions. Second operand 3 states. [2020-12-23 10:29:09,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:29:09,737 INFO L93 Difference]: Finished difference Result 529735 states and 819874 transitions. [2020-12-23 10:29:09,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:29:09,741 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2020-12-23 10:29:09,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:29:10,728 INFO L225 Difference]: With dead ends: 529735 [2020-12-23 10:29:10,729 INFO L226 Difference]: Without dead ends: 353197 [2020-12-23 10:29:10,928 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 10:29:11,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353197 states.