/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_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 11:28:26,734 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 11:28:26,739 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 11:28:26,806 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 11:28:26,807 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 11:28:26,811 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 11:28:26,815 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 11:28:26,821 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 11:28:26,824 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 11:28:26,830 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 11:28:26,833 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 11:28:26,835 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 11:28:26,835 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 11:28:26,838 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 11:28:26,840 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 11:28:26,842 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 11:28:26,843 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 11:28:26,859 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 11:28:26,865 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 11:28:26,873 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 11:28:26,874 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 11:28:26,876 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 11:28:26,878 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 11:28:26,880 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 11:28:26,886 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 11:28:26,890 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 11:28:26,891 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 11:28:26,893 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 11:28:26,894 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 11:28:26,895 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 11:28:26,895 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 11:28:26,896 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 11:28:26,903 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 11:28:26,903 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 11:28:26,904 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 11:28:26,905 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 11:28:26,911 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 11:28:26,957 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 11:28:26,957 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 11:28:26,962 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 11:28:26,962 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 11:28:26,962 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 11:28:26,963 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 11:28:26,963 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 11:28:26,963 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 11:28:26,963 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 11:28:26,963 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 11:28:26,964 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 11:28:26,965 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 11:28:26,965 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 11:28:26,965 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 11:28:26,966 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 11:28:26,966 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 11:28:26,966 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 11:28:26,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 11:28:26,967 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 11:28:26,967 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 11:28:26,967 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 11:28:26,967 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 11:28:26,968 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 11:28:26,968 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 11:28:26,968 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 11:28:26,968 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 11:28:27,423 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 11:28:27,463 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 11:28:27,466 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 11:28:27,468 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 11:28:27,468 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 11:28:27,469 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2020-12-23 11:28:27,562 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/c7aaaff40/3d7d89f7c0104d9abba7730d9269cc5a/FLAG55bab7323 [2020-12-23 11:28:28,272 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 11:28:28,273 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2020-12-23 11:28:28,310 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/c7aaaff40/3d7d89f7c0104d9abba7730d9269cc5a/FLAG55bab7323 [2020-12-23 11:28:28,549 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/c7aaaff40/3d7d89f7c0104d9abba7730d9269cc5a [2020-12-23 11:28:28,552 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 11:28:28,598 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 11:28:28,601 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 11:28:28,601 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 11:28:28,605 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 11:28:28,606 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 11:28:28" (1/1) ... [2020-12-23 11:28:28,607 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72ba0b2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:28:28, skipping insertion in model container [2020-12-23 11:28:28,607 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 11:28:28" (1/1) ... [2020-12-23 11:28:28,617 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 11:28:28,689 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[~newmax1~0,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[~newmax2~0,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[~newmax3~0,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_1935~0,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[~node1__newmax~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[~node1__newmax~0,] 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[~node1__newmax~0,] left hand side expression in assignment: lhs: VariableLHS[~newmax1~0,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[~node2__newmax~0,] 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[~node2__newmax~0,] 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[~node2__newmax~0,] left hand side expression in assignment: lhs: VariableLHS[~newmax2~0,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[~node3__newmax~0,] 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[~node3__newmax~0,] 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[~node3__newmax~0,] left hand side expression in assignment: lhs: VariableLHS[~newmax3~0,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_2084~0,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 11:28:28,934 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_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[7400,7413] 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_2191~0,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 11:28:28,978 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 11:28:29,000 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[~newmax1~0,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[~newmax2~0,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[~newmax3~0,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_1935~0,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[~node1__newmax~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[~node1__newmax~0,] 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[~node1__newmax~0,] left hand side expression in assignment: lhs: VariableLHS[~newmax1~0,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[~node2__newmax~0,] 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[~node2__newmax~0,] 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[~node2__newmax~0,] left hand side expression in assignment: lhs: VariableLHS[~newmax2~0,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[~node3__newmax~0,] 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[~node3__newmax~0,] 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[~node3__newmax~0,] left hand side expression in assignment: lhs: VariableLHS[~newmax3~0,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_2084~0,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 11:28:29,135 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_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[7400,7413] 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_2191~0,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 11:28:29,207 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 11:28:29,250 INFO L208 MainTranslator]: Completed translation [2020-12-23 11:28:29,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:28:29 WrapperNode [2020-12-23 11:28:29,251 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 11:28:29,255 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 11:28:29,255 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 11:28:29,255 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 11:28:29,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:28:29" (1/1) ... [2020-12-23 11:28:29,300 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:28:29" (1/1) ... [2020-12-23 11:28:29,381 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 11:28:29,382 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 11:28:29,382 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 11:28:29,383 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 11:28:29,401 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:28:29" (1/1) ... [2020-12-23 11:28:29,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:28:29" (1/1) ... [2020-12-23 11:28:29,409 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:28:29" (1/1) ... [2020-12-23 11:28:29,415 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:28:29" (1/1) ... [2020-12-23 11:28:29,439 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:28:29" (1/1) ... [2020-12-23 11:28:29,452 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:28:29" (1/1) ... [2020-12-23 11:28:29,458 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:28:29" (1/1) ... [2020-12-23 11:28:29,468 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 11:28:29,491 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 11:28:29,491 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 11:28:29,491 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 11:28:29,492 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:28:29" (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 11:28:29,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 11:28:29,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 11:28:29,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 11:28:29,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 11:28:30,470 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 11:28:30,471 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-23 11:28:30,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 11:28:30 BoogieIcfgContainer [2020-12-23 11:28:30,474 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 11:28:30,476 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 11:28:30,476 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 11:28:30,480 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 11:28:30,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 11:28:28" (1/3) ... [2020-12-23 11:28:30,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cc31abb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 11:28:30, skipping insertion in model container [2020-12-23 11:28:30,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:28:29" (2/3) ... [2020-12-23 11:28:30,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cc31abb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 11:28:30, skipping insertion in model container [2020-12-23 11:28:30,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 11:28:30" (3/3) ... [2020-12-23 11:28:30,484 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2020-12-23 11:28:30,495 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 11:28:30,504 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 11:28:30,547 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 11:28:30,602 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 11:28:30,602 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 11:28:30,615 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 11:28:30,615 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 11:28:30,615 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 11:28:30,615 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 11:28:30,615 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 11:28:30,616 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 11:28:30,647 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states. [2020-12-23 11:28:30,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-23 11:28:30,663 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:28:30,664 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:28:30,664 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:28:30,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:28:30,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1468963440, now seen corresponding path program 1 times [2020-12-23 11:28:30,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:28:30,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631310300] [2020-12-23 11:28:30,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:28:31,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:28:31,304 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 11:28:31,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631310300] [2020-12-23 11:28:31,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:28:31,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:28:31,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945849701] [2020-12-23 11:28:31,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:28:31,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:28:31,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:28:31,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:28:31,330 INFO L87 Difference]: Start difference. First operand 149 states. Second operand 3 states. [2020-12-23 11:28:31,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:28:31,434 INFO L93 Difference]: Finished difference Result 323 states and 547 transitions. [2020-12-23 11:28:31,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:28:31,436 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2020-12-23 11:28:31,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:28:31,455 INFO L225 Difference]: With dead ends: 323 [2020-12-23 11:28:31,455 INFO L226 Difference]: Without dead ends: 225 [2020-12-23 11:28:31,465 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 11:28:31,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-12-23 11:28:31,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 223. [2020-12-23 11:28:31,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-12-23 11:28:31,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 349 transitions. [2020-12-23 11:28:31,544 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 349 transitions. Word has length 62 [2020-12-23 11:28:31,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:28:31,548 INFO L481 AbstractCegarLoop]: Abstraction has 223 states and 349 transitions. [2020-12-23 11:28:31,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:28:31,548 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 349 transitions. [2020-12-23 11:28:31,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-23 11:28:31,555 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:28:31,555 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 11:28:31,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 11:28:31,556 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:28:31,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:28:31,560 INFO L82 PathProgramCache]: Analyzing trace with hash -240910223, now seen corresponding path program 1 times [2020-12-23 11:28:31,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:28:31,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047612566] [2020-12-23 11:28:31,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:28:31,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:28:31,753 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 11:28:31,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047612566] [2020-12-23 11:28:31,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:28:31,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:28:31,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179331231] [2020-12-23 11:28:31,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:28:31,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:28:31,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:28:31,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:28:31,758 INFO L87 Difference]: Start difference. First operand 223 states and 349 transitions. Second operand 3 states. [2020-12-23 11:28:31,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:28:31,820 INFO L93 Difference]: Finished difference Result 539 states and 869 transitions. [2020-12-23 11:28:31,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:28:31,822 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2020-12-23 11:28:31,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:28:31,830 INFO L225 Difference]: With dead ends: 539 [2020-12-23 11:28:31,831 INFO L226 Difference]: Without dead ends: 373 [2020-12-23 11:28:31,835 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 11:28:31,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2020-12-23 11:28:31,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 371. [2020-12-23 11:28:31,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2020-12-23 11:28:31,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 592 transitions. [2020-12-23 11:28:31,903 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 592 transitions. Word has length 64 [2020-12-23 11:28:31,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:28:31,904 INFO L481 AbstractCegarLoop]: Abstraction has 371 states and 592 transitions. [2020-12-23 11:28:31,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:28:31,904 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 592 transitions. [2020-12-23 11:28:31,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-23 11:28:31,911 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:28:31,911 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 11:28:31,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 11:28:31,912 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:28:31,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:28:31,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1851209774, now seen corresponding path program 1 times [2020-12-23 11:28:31,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:28:31,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579457959] [2020-12-23 11:28:31,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:28:31,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:28:32,067 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 11:28:32,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579457959] [2020-12-23 11:28:32,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:28:32,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:28:32,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448697751] [2020-12-23 11:28:32,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:28:32,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:28:32,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:28:32,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:28:32,070 INFO L87 Difference]: Start difference. First operand 371 states and 592 transitions. Second operand 3 states. [2020-12-23 11:28:32,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:28:32,119 INFO L93 Difference]: Finished difference Result 967 states and 1570 transitions. [2020-12-23 11:28:32,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:28:32,119 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2020-12-23 11:28:32,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:28:32,124 INFO L225 Difference]: With dead ends: 967 [2020-12-23 11:28:32,124 INFO L226 Difference]: Without dead ends: 653 [2020-12-23 11:28:32,127 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 11:28:32,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2020-12-23 11:28:32,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 651. [2020-12-23 11:28:32,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 651 states. [2020-12-23 11:28:32,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 1048 transitions. [2020-12-23 11:28:32,175 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 1048 transitions. Word has length 66 [2020-12-23 11:28:32,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:28:32,176 INFO L481 AbstractCegarLoop]: Abstraction has 651 states and 1048 transitions. [2020-12-23 11:28:32,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:28:32,178 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 1048 transitions. [2020-12-23 11:28:32,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-23 11:28:32,186 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:28:32,186 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 11:28:32,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 11:28:32,187 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:28:32,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:28:32,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1666116403, now seen corresponding path program 1 times [2020-12-23 11:28:32,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:28:32,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921134959] [2020-12-23 11:28:32,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:28:32,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:28:32,386 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 11:28:32,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921134959] [2020-12-23 11:28:32,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:28:32,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 11:28:32,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450717179] [2020-12-23 11:28:32,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 11:28:32,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:28:32,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 11:28:32,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 11:28:32,389 INFO L87 Difference]: Start difference. First operand 651 states and 1048 transitions. Second operand 5 states. [2020-12-23 11:28:32,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:28:32,647 INFO L93 Difference]: Finished difference Result 2807 states and 4618 transitions. [2020-12-23 11:28:32,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 11:28:32,647 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2020-12-23 11:28:32,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:28:32,660 INFO L225 Difference]: With dead ends: 2807 [2020-12-23 11:28:32,661 INFO L226 Difference]: Without dead ends: 2213 [2020-12-23 11:28:32,663 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-23 11:28:32,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2213 states. [2020-12-23 11:28:32,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2213 to 1170. [2020-12-23 11:28:32,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1170 states. [2020-12-23 11:28:32,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1170 states to 1170 states and 1898 transitions. [2020-12-23 11:28:32,744 INFO L78 Accepts]: Start accepts. Automaton has 1170 states and 1898 transitions. Word has length 68 [2020-12-23 11:28:32,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:28:32,744 INFO L481 AbstractCegarLoop]: Abstraction has 1170 states and 1898 transitions. [2020-12-23 11:28:32,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 11:28:32,745 INFO L276 IsEmpty]: Start isEmpty. Operand 1170 states and 1898 transitions. [2020-12-23 11:28:32,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-23 11:28:32,746 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:28:32,747 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] [2020-12-23 11:28:32,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 11:28:32,747 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:28:32,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:28:32,748 INFO L82 PathProgramCache]: Analyzing trace with hash 47496755, now seen corresponding path program 1 times [2020-12-23 11:28:32,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:28:32,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683503764] [2020-12-23 11:28:32,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:28:32,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:28:32,868 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 11:28:32,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683503764] [2020-12-23 11:28:32,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:28:32,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 11:28:32,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632186434] [2020-12-23 11:28:32,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 11:28:32,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:28:32,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 11:28:32,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 11:28:32,871 INFO L87 Difference]: Start difference. First operand 1170 states and 1898 transitions. Second operand 4 states. [2020-12-23 11:28:33,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:28:33,042 INFO L93 Difference]: Finished difference Result 3409 states and 5599 transitions. [2020-12-23 11:28:33,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 11:28:33,042 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 69 [2020-12-23 11:28:33,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:28:33,055 INFO L225 Difference]: With dead ends: 3409 [2020-12-23 11:28:33,055 INFO L226 Difference]: Without dead ends: 2296 [2020-12-23 11:28:33,058 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 11:28:33,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2296 states. [2020-12-23 11:28:33,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2296 to 1724. [2020-12-23 11:28:33,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1724 states. [2020-12-23 11:28:33,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1724 states to 1724 states and 2808 transitions. [2020-12-23 11:28:33,172 INFO L78 Accepts]: Start accepts. Automaton has 1724 states and 2808 transitions. Word has length 69 [2020-12-23 11:28:33,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:28:33,174 INFO L481 AbstractCegarLoop]: Abstraction has 1724 states and 2808 transitions. [2020-12-23 11:28:33,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 11:28:33,174 INFO L276 IsEmpty]: Start isEmpty. Operand 1724 states and 2808 transitions. [2020-12-23 11:28:33,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-23 11:28:33,176 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:28:33,177 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] [2020-12-23 11:28:33,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 11:28:33,177 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:28:33,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:28:33,178 INFO L82 PathProgramCache]: Analyzing trace with hash -1156873170, now seen corresponding path program 1 times [2020-12-23 11:28:33,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:28:33,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489695531] [2020-12-23 11:28:33,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:28:33,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:28:33,263 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 11:28:33,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489695531] [2020-12-23 11:28:33,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:28:33,264 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:28:33,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111697184] [2020-12-23 11:28:33,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:28:33,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:28:33,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:28:33,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:28:33,266 INFO L87 Difference]: Start difference. First operand 1724 states and 2808 transitions. Second operand 3 states. [2020-12-23 11:28:33,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:28:33,449 INFO L93 Difference]: Finished difference Result 3779 states and 6218 transitions. [2020-12-23 11:28:33,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:28:33,450 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2020-12-23 11:28:33,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:28:33,464 INFO L225 Difference]: With dead ends: 3779 [2020-12-23 11:28:33,464 INFO L226 Difference]: Without dead ends: 2591 [2020-12-23 11:28:33,466 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 11:28:33,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2591 states. [2020-12-23 11:28:33,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2591 to 2589. [2020-12-23 11:28:33,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2589 states. [2020-12-23 11:28:33,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2589 states to 2589 states and 4227 transitions. [2020-12-23 11:28:33,636 INFO L78 Accepts]: Start accepts. Automaton has 2589 states and 4227 transitions. Word has length 70 [2020-12-23 11:28:33,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:28:33,637 INFO L481 AbstractCegarLoop]: Abstraction has 2589 states and 4227 transitions. [2020-12-23 11:28:33,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:28:33,637 INFO L276 IsEmpty]: Start isEmpty. Operand 2589 states and 4227 transitions. [2020-12-23 11:28:33,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-23 11:28:33,638 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:28:33,639 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] [2020-12-23 11:28:33,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 11:28:33,639 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:28:33,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:28:33,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1843763252, now seen corresponding path program 1 times [2020-12-23 11:28:33,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:28:33,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776880654] [2020-12-23 11:28:33,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:28:33,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:28:33,688 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 11:28:33,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776880654] [2020-12-23 11:28:33,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:28:33,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:28:33,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113559853] [2020-12-23 11:28:33,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:28:33,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:28:33,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:28:33,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:28:33,690 INFO L87 Difference]: Start difference. First operand 2589 states and 4227 transitions. Second operand 3 states. [2020-12-23 11:28:33,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:28:33,899 INFO L93 Difference]: Finished difference Result 5033 states and 8246 transitions. [2020-12-23 11:28:33,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:28:33,900 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2020-12-23 11:28:33,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:28:33,919 INFO L225 Difference]: With dead ends: 5033 [2020-12-23 11:28:33,919 INFO L226 Difference]: Without dead ends: 3599 [2020-12-23 11:28:33,925 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 11:28:33,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3599 states. [2020-12-23 11:28:34,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3599 to 3597. [2020-12-23 11:28:34,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3597 states. [2020-12-23 11:28:34,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3597 states to 3597 states and 5857 transitions. [2020-12-23 11:28:34,190 INFO L78 Accepts]: Start accepts. Automaton has 3597 states and 5857 transitions. Word has length 70 [2020-12-23 11:28:34,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:28:34,190 INFO L481 AbstractCegarLoop]: Abstraction has 3597 states and 5857 transitions. [2020-12-23 11:28:34,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:28:34,190 INFO L276 IsEmpty]: Start isEmpty. Operand 3597 states and 5857 transitions. [2020-12-23 11:28:34,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-23 11:28:34,192 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:28:34,192 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] [2020-12-23 11:28:34,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 11:28:34,193 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:28:34,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:28:34,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1414453242, now seen corresponding path program 1 times [2020-12-23 11:28:34,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:28:34,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562508147] [2020-12-23 11:28:34,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:28:34,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:28:34,325 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 11:28:34,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562508147] [2020-12-23 11:28:34,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:28:34,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 11:28:34,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545612296] [2020-12-23 11:28:34,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 11:28:34,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:28:34,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 11:28:34,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 11:28:34,328 INFO L87 Difference]: Start difference. First operand 3597 states and 5857 transitions. Second operand 4 states. [2020-12-23 11:28:34,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:28:34,981 INFO L93 Difference]: Finished difference Result 11637 states and 19017 transitions. [2020-12-23 11:28:34,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 11:28:34,982 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2020-12-23 11:28:34,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:28:35,026 INFO L225 Difference]: With dead ends: 11637 [2020-12-23 11:28:35,026 INFO L226 Difference]: Without dead ends: 8115 [2020-12-23 11:28:35,033 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 11:28:35,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8115 states. [2020-12-23 11:28:35,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8115 to 5670. [2020-12-23 11:28:35,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5670 states. [2020-12-23 11:28:35,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5670 states to 5670 states and 9202 transitions. [2020-12-23 11:28:35,504 INFO L78 Accepts]: Start accepts. Automaton has 5670 states and 9202 transitions. Word has length 70 [2020-12-23 11:28:35,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:28:35,505 INFO L481 AbstractCegarLoop]: Abstraction has 5670 states and 9202 transitions. [2020-12-23 11:28:35,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 11:28:35,505 INFO L276 IsEmpty]: Start isEmpty. Operand 5670 states and 9202 transitions. [2020-12-23 11:28:35,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-23 11:28:35,506 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:28:35,506 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] [2020-12-23 11:28:35,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 11:28:35,506 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:28:35,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:28:35,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1510229994, now seen corresponding path program 1 times [2020-12-23 11:28:35,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:28:35,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890490160] [2020-12-23 11:28:35,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:28:35,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:28:35,559 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 11:28:35,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890490160] [2020-12-23 11:28:35,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:28:35,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:28:35,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145998905] [2020-12-23 11:28:35,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:28:35,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:28:35,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:28:35,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:28:35,571 INFO L87 Difference]: Start difference. First operand 5670 states and 9202 transitions. Second operand 3 states. [2020-12-23 11:28:36,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:28:36,015 INFO L93 Difference]: Finished difference Result 11090 states and 18039 transitions. [2020-12-23 11:28:36,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:28:36,016 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2020-12-23 11:28:36,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:28:36,050 INFO L225 Difference]: With dead ends: 11090 [2020-12-23 11:28:36,051 INFO L226 Difference]: Without dead ends: 7838 [2020-12-23 11:28:36,060 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 11:28:36,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7838 states. [2020-12-23 11:28:36,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7838 to 7836. [2020-12-23 11:28:36,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7836 states. [2020-12-23 11:28:36,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7836 states to 7836 states and 12656 transitions. [2020-12-23 11:28:36,663 INFO L78 Accepts]: Start accepts. Automaton has 7836 states and 12656 transitions. Word has length 70 [2020-12-23 11:28:36,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:28:36,664 INFO L481 AbstractCegarLoop]: Abstraction has 7836 states and 12656 transitions. [2020-12-23 11:28:36,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:28:36,664 INFO L276 IsEmpty]: Start isEmpty. Operand 7836 states and 12656 transitions. [2020-12-23 11:28:36,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-23 11:28:36,665 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:28:36,665 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 11:28:36,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 11:28:36,666 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:28:36,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:28:36,667 INFO L82 PathProgramCache]: Analyzing trace with hash 844989402, now seen corresponding path program 1 times [2020-12-23 11:28:36,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:28:36,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871132122] [2020-12-23 11:28:36,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:28:36,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:28:36,808 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 11:28:36,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871132122] [2020-12-23 11:28:36,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:28:36,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 11:28:36,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514877860] [2020-12-23 11:28:36,810 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 11:28:36,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:28:36,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 11:28:36,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 11:28:36,811 INFO L87 Difference]: Start difference. First operand 7836 states and 12656 transitions. Second operand 4 states. [2020-12-23 11:28:37,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:28:37,868 INFO L93 Difference]: Finished difference Result 25425 states and 41161 transitions. [2020-12-23 11:28:37,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 11:28:37,868 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2020-12-23 11:28:37,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:28:37,921 INFO L225 Difference]: With dead ends: 25425 [2020-12-23 11:28:37,921 INFO L226 Difference]: Without dead ends: 17680 [2020-12-23 11:28:37,935 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 11:28:37,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17680 states. [2020-12-23 11:28:38,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17680 to 12235. [2020-12-23 11:28:38,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12235 states. [2020-12-23 11:28:38,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12235 states to 12235 states and 19663 transitions. [2020-12-23 11:28:38,849 INFO L78 Accepts]: Start accepts. Automaton has 12235 states and 19663 transitions. Word has length 71 [2020-12-23 11:28:38,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:28:38,850 INFO L481 AbstractCegarLoop]: Abstraction has 12235 states and 19663 transitions. [2020-12-23 11:28:38,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 11:28:38,850 INFO L276 IsEmpty]: Start isEmpty. Operand 12235 states and 19663 transitions. [2020-12-23 11:28:38,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-23 11:28:38,851 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:28:38,851 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 11:28:38,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 11:28:38,852 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:28:38,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:28:38,852 INFO L82 PathProgramCache]: Analyzing trace with hash -1231314837, now seen corresponding path program 1 times [2020-12-23 11:28:38,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:28:38,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586281404] [2020-12-23 11:28:38,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:28:38,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:28:38,964 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 11:28:38,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586281404] [2020-12-23 11:28:38,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:28:38,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 11:28:38,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656060086] [2020-12-23 11:28:38,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 11:28:38,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:28:38,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 11:28:38,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 11:28:38,967 INFO L87 Difference]: Start difference. First operand 12235 states and 19663 transitions. Second operand 4 states. [2020-12-23 11:28:40,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:28:40,548 INFO L93 Difference]: Finished difference Result 35934 states and 57718 transitions. [2020-12-23 11:28:40,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 11:28:40,548 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2020-12-23 11:28:40,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:28:40,615 INFO L225 Difference]: With dead ends: 35934 [2020-12-23 11:28:40,615 INFO L226 Difference]: Without dead ends: 23708 [2020-12-23 11:28:40,636 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 11:28:40,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23708 states. [2020-12-23 11:28:42,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23708 to 23706. [2020-12-23 11:28:42,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23706 states. [2020-12-23 11:28:42,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23706 states to 23706 states and 37843 transitions. [2020-12-23 11:28:42,166 INFO L78 Accepts]: Start accepts. Automaton has 23706 states and 37843 transitions. Word has length 73 [2020-12-23 11:28:42,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:28:42,166 INFO L481 AbstractCegarLoop]: Abstraction has 23706 states and 37843 transitions. [2020-12-23 11:28:42,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 11:28:42,166 INFO L276 IsEmpty]: Start isEmpty. Operand 23706 states and 37843 transitions. [2020-12-23 11:28:42,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-23 11:28:42,167 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:28:42,167 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 11:28:42,168 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 11:28:42,168 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:28:42,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:28:42,169 INFO L82 PathProgramCache]: Analyzing trace with hash -940832745, now seen corresponding path program 1 times [2020-12-23 11:28:42,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:28:42,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290497818] [2020-12-23 11:28:42,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:28:42,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:28:42,209 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 11:28:42,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290497818] [2020-12-23 11:28:42,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:28:42,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:28:42,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939239737] [2020-12-23 11:28:42,210 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:28:42,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:28:42,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:28:42,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:28:42,211 INFO L87 Difference]: Start difference. First operand 23706 states and 37843 transitions. Second operand 3 states. [2020-12-23 11:28:44,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:28:44,522 INFO L93 Difference]: Finished difference Result 71080 states and 113467 transitions. [2020-12-23 11:28:44,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:28:44,522 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2020-12-23 11:28:44,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:28:44,723 INFO L225 Difference]: With dead ends: 71080 [2020-12-23 11:28:44,723 INFO L226 Difference]: Without dead ends: 47402 [2020-12-23 11:28:44,759 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 11:28:44,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47402 states. [2020-12-23 11:28:46,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47402 to 23708. [2020-12-23 11:28:46,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23708 states. [2020-12-23 11:28:46,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23708 states to 23708 states and 37845 transitions. [2020-12-23 11:28:46,432 INFO L78 Accepts]: Start accepts. Automaton has 23708 states and 37845 transitions. Word has length 74 [2020-12-23 11:28:46,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:28:46,432 INFO L481 AbstractCegarLoop]: Abstraction has 23708 states and 37845 transitions. [2020-12-23 11:28:46,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:28:46,432 INFO L276 IsEmpty]: Start isEmpty. Operand 23708 states and 37845 transitions. [2020-12-23 11:28:46,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-23 11:28:46,433 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:28:46,434 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 11:28:46,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-23 11:28:46,434 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:28:46,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:28:46,435 INFO L82 PathProgramCache]: Analyzing trace with hash 826320946, now seen corresponding path program 1 times [2020-12-23 11:28:46,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:28:46,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880126356] [2020-12-23 11:28:46,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:28:46,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:28:46,484 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 11:28:46,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880126356] [2020-12-23 11:28:46,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:28:46,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:28:46,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916708155] [2020-12-23 11:28:46,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:28:46,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:28:46,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:28:46,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:28:46,487 INFO L87 Difference]: Start difference. First operand 23708 states and 37845 transitions. Second operand 3 states. [2020-12-23 11:28:48,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:28:48,296 INFO L93 Difference]: Finished difference Result 57125 states and 91716 transitions. [2020-12-23 11:28:48,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:28:48,297 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2020-12-23 11:28:48,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:28:48,355 INFO L225 Difference]: With dead ends: 57125 [2020-12-23 11:28:48,356 INFO L226 Difference]: Without dead ends: 33546 [2020-12-23 11:28:48,384 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 11:28:48,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33546 states. [2020-12-23 11:28:50,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33546 to 32634. [2020-12-23 11:28:50,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32634 states. [2020-12-23 11:28:50,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32634 states to 32634 states and 52000 transitions. [2020-12-23 11:28:50,636 INFO L78 Accepts]: Start accepts. Automaton has 32634 states and 52000 transitions. Word has length 74 [2020-12-23 11:28:50,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:28:50,636 INFO L481 AbstractCegarLoop]: Abstraction has 32634 states and 52000 transitions. [2020-12-23 11:28:50,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:28:50,636 INFO L276 IsEmpty]: Start isEmpty. Operand 32634 states and 52000 transitions. [2020-12-23 11:28:50,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-23 11:28:50,643 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:28:50,644 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:28:50,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-23 11:28:50,644 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:28:50,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:28:50,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1329573307, now seen corresponding path program 1 times [2020-12-23 11:28:50,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:28:50,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851767662] [2020-12-23 11:28:50,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:28:50,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:28:50,726 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 11:28:50,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851767662] [2020-12-23 11:28:50,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:28:50,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:28:50,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743939145] [2020-12-23 11:28:50,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:28:50,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:28:50,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:28:50,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:28:50,728 INFO L87 Difference]: Start difference. First operand 32634 states and 52000 transitions. Second operand 3 states. [2020-12-23 11:28:54,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:28:54,114 INFO L93 Difference]: Finished difference Result 95603 states and 152270 transitions. [2020-12-23 11:28:54,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:28:54,114 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2020-12-23 11:28:54,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:28:54,210 INFO L225 Difference]: With dead ends: 95603 [2020-12-23 11:28:54,210 INFO L226 Difference]: Without dead ends: 63142 [2020-12-23 11:28:54,240 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 11:28:54,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63142 states. [2020-12-23 11:28:58,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63142 to 63140. [2020-12-23 11:28:58,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63140 states. [2020-12-23 11:28:58,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63140 states to 63140 states and 99869 transitions. [2020-12-23 11:28:58,267 INFO L78 Accepts]: Start accepts. Automaton has 63140 states and 99869 transitions. Word has length 75 [2020-12-23 11:28:58,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:28:58,267 INFO L481 AbstractCegarLoop]: Abstraction has 63140 states and 99869 transitions. [2020-12-23 11:28:58,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:28:58,267 INFO L276 IsEmpty]: Start isEmpty. Operand 63140 states and 99869 transitions. [2020-12-23 11:28:58,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-23 11:28:58,268 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:28:58,268 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:28:58,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-23 11:28:58,269 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:28:58,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:28:58,269 INFO L82 PathProgramCache]: Analyzing trace with hash -121452674, now seen corresponding path program 1 times [2020-12-23 11:28:58,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:28:58,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820994433] [2020-12-23 11:28:58,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:28:58,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:28:58,389 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 11:28:58,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820994433] [2020-12-23 11:28:58,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:28:58,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 11:28:58,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897879151] [2020-12-23 11:28:58,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 11:28:58,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:28:58,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 11:28:58,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 11:28:58,396 INFO L87 Difference]: Start difference. First operand 63140 states and 99869 transitions. Second operand 5 states. [2020-12-23 11:29:04,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:29:04,986 INFO L93 Difference]: Finished difference Result 177450 states and 280542 transitions. [2020-12-23 11:29:04,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 11:29:04,987 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 75 [2020-12-23 11:29:04,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:29:05,346 INFO L225 Difference]: With dead ends: 177450 [2020-12-23 11:29:05,346 INFO L226 Difference]: Without dead ends: 114324 [2020-12-23 11:29:05,412 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 11:29:05,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114324 states. [2020-12-23 11:29:12,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114324 to 114322. [2020-12-23 11:29:12,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114322 states. [2020-12-23 11:29:12,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114322 states to 114322 states and 179279 transitions. [2020-12-23 11:29:12,383 INFO L78 Accepts]: Start accepts. Automaton has 114322 states and 179279 transitions. Word has length 75 [2020-12-23 11:29:12,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:29:12,383 INFO L481 AbstractCegarLoop]: Abstraction has 114322 states and 179279 transitions. [2020-12-23 11:29:12,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 11:29:12,384 INFO L276 IsEmpty]: Start isEmpty. Operand 114322 states and 179279 transitions. [2020-12-23 11:29:12,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-23 11:29:12,385 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:29:12,385 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:29:12,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-23 11:29:12,386 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:29:12,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:29:12,386 INFO L82 PathProgramCache]: Analyzing trace with hash 816290506, now seen corresponding path program 1 times [2020-12-23 11:29:12,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:29:12,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197940295] [2020-12-23 11:29:12,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:29:12,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:29:12,765 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 11:29:12,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197940295] [2020-12-23 11:29:12,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:29:12,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 11:29:12,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744137715] [2020-12-23 11:29:12,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 11:29:12,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:29:12,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 11:29:12,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 11:29:12,768 INFO L87 Difference]: Start difference. First operand 114322 states and 179279 transitions. Second operand 4 states. [2020-12-23 11:29:26,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:29:26,031 INFO L93 Difference]: Finished difference Result 335211 states and 525140 transitions. [2020-12-23 11:29:26,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 11:29:26,031 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 75 [2020-12-23 11:29:26,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:29:26,468 INFO L225 Difference]: With dead ends: 335211 [2020-12-23 11:29:26,469 INFO L226 Difference]: Without dead ends: 220945 [2020-12-23 11:29:26,564 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 11:29:26,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220945 states. [2020-12-23 11:29:40,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220945 to 220943. [2020-12-23 11:29:40,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220943 states. [2020-12-23 11:29:41,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220943 states to 220943 states and 343825 transitions. [2020-12-23 11:29:41,495 INFO L78 Accepts]: Start accepts. Automaton has 220943 states and 343825 transitions. Word has length 75 [2020-12-23 11:29:41,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:29:41,496 INFO L481 AbstractCegarLoop]: Abstraction has 220943 states and 343825 transitions. [2020-12-23 11:29:41,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 11:29:41,496 INFO L276 IsEmpty]: Start isEmpty. Operand 220943 states and 343825 transitions. [2020-12-23 11:29:41,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-23 11:29:41,499 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:29:41,499 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:29:41,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-23 11:29:41,499 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:29:41,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:29:41,500 INFO L82 PathProgramCache]: Analyzing trace with hash -353140970, now seen corresponding path program 1 times [2020-12-23 11:29:41,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:29:41,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690110891] [2020-12-23 11:29:41,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:29:41,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:29:41,530 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 11:29:41,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690110891] [2020-12-23 11:29:41,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:29:41,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:29:41,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291692086] [2020-12-23 11:29:41,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:29:41,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:29:41,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:29:41,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:29:41,532 INFO L87 Difference]: Start difference. First operand 220943 states and 343825 transitions. Second operand 3 states. [2020-12-23 11:30:09,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:30:09,586 INFO L93 Difference]: Finished difference Result 662677 states and 1031242 transitions. [2020-12-23 11:30:09,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:30:09,586 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2020-12-23 11:30:09,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:30:10,732 INFO L225 Difference]: With dead ends: 662677 [2020-12-23 11:30:10,732 INFO L226 Difference]: Without dead ends: 441825 [2020-12-23 11:30:10,965 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 11:30:11,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441825 states. [2020-12-23 11:30:28,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441825 to 220953. [2020-12-23 11:30:28,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220953 states. [2020-12-23 11:30:29,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220953 states to 220953 states and 343835 transitions. [2020-12-23 11:30:29,346 INFO L78 Accepts]: Start accepts. Automaton has 220953 states and 343835 transitions. Word has length 76 [2020-12-23 11:30:29,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:30:29,348 INFO L481 AbstractCegarLoop]: Abstraction has 220953 states and 343835 transitions. [2020-12-23 11:30:29,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:30:29,348 INFO L276 IsEmpty]: Start isEmpty. Operand 220953 states and 343835 transitions. [2020-12-23 11:30:29,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-23 11:30:29,351 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:30:29,351 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:30:29,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-23 11:30:29,351 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:30:29,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:30:29,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1791136339, now seen corresponding path program 1 times [2020-12-23 11:30:29,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:30:29,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534519245] [2020-12-23 11:30:29,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:30:29,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:30:29,403 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 11:30:29,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534519245] [2020-12-23 11:30:29,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:30:29,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:30:29,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183840113] [2020-12-23 11:30:29,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:30:29,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:30:29,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:30:29,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:30:29,406 INFO L87 Difference]: Start difference. First operand 220953 states and 343835 transitions. Second operand 3 states.