/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.3.1.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 11:24:14,540 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 11:24:14,544 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 11:24:14,597 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 11:24:14,598 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 11:24:14,602 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 11:24:14,606 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 11:24:14,611 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 11:24:14,614 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 11:24:14,620 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 11:24:14,624 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 11:24:14,625 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 11:24:14,626 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 11:24:14,629 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 11:24:14,631 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 11:24:14,632 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 11:24:14,633 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 11:24:14,636 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 11:24:14,644 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 11:24:14,652 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 11:24:14,659 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 11:24:14,662 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 11:24:14,663 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 11:24:14,664 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 11:24:14,676 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 11:24:14,676 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 11:24:14,677 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 11:24:14,678 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 11:24:14,678 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 11:24:14,679 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 11:24:14,679 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 11:24:14,680 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 11:24:14,681 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 11:24:14,682 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 11:24:14,683 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 11:24:14,683 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 11:24:14,684 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 11:24:14,684 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 11:24:14,685 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 11:24:14,685 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 11:24:14,686 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 11:24:14,687 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 11:24:14,713 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 11:24:14,713 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 11:24:14,715 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 11:24:14,715 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 11:24:14,715 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 11:24:14,715 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 11:24:14,716 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 11:24:14,716 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 11:24:14,716 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 11:24:14,716 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 11:24:14,716 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 11:24:14,717 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 11:24:14,717 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 11:24:14,717 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 11:24:14,717 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 11:24:14,717 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 11:24:14,718 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 11:24:14,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 11:24:14,718 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 11:24:14,718 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 11:24:14,718 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 11:24:14,719 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 11:24:14,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 11:24:14,719 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 11:24:14,719 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 11:24:14,719 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 11:24:15,086 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 11:24:15,118 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 11:24:15,121 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 11:24:15,123 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 11:24:15,124 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 11:24:15,125 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2020-12-23 11:24:15,203 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/d21bc0b59/81a6e404e0ff4c65b0f88e82682205f5/FLAG0b90e16ee [2020-12-23 11:24:15,860 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 11:24:15,860 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2020-12-23 11:24:15,873 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/d21bc0b59/81a6e404e0ff4c65b0f88e82682205f5/FLAG0b90e16ee [2020-12-23 11:24:16,172 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/d21bc0b59/81a6e404e0ff4c65b0f88e82682205f5 [2020-12-23 11:24:16,177 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 11:24:16,181 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 11:24:16,184 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 11:24:16,185 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 11:24:16,189 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 11:24:16,190 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 11:24:16" (1/1) ... [2020-12-23 11:24:16,193 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e1fb0cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:24:16, skipping insertion in model container [2020-12-23 11:24:16,193 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 11:24:16" (1/1) ... [2020-12-23 11:24:16,208 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 11:24:16,283 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_1911~0,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_2060~0,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 11:24:16,571 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.3.1.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[7234,7247] 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_2167~0,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 11:24:16,635 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 11:24:16,666 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_1911~0,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_2060~0,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 11:24:16,727 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.3.1.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[7234,7247] 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_2167~0,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 11:24:16,757 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 11:24:16,780 INFO L208 MainTranslator]: Completed translation [2020-12-23 11:24:16,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:24:16 WrapperNode [2020-12-23 11:24:16,781 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 11:24:16,783 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 11:24:16,783 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 11:24:16,783 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 11:24:16,792 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:24:16" (1/1) ... [2020-12-23 11:24:16,809 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:24:16" (1/1) ... [2020-12-23 11:24:16,861 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 11:24:16,862 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 11:24:16,863 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 11:24:16,863 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 11:24:16,875 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:24:16" (1/1) ... [2020-12-23 11:24:16,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:24:16" (1/1) ... [2020-12-23 11:24:16,891 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:24:16" (1/1) ... [2020-12-23 11:24:16,891 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:24:16" (1/1) ... [2020-12-23 11:24:16,915 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:24:16" (1/1) ... [2020-12-23 11:24:16,932 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:24:16" (1/1) ... [2020-12-23 11:24:16,935 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:24:16" (1/1) ... [2020-12-23 11:24:16,948 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 11:24:16,950 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 11:24:16,950 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 11:24:16,950 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 11:24:16,951 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:24:16" (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 11:24:17,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 11:24:17,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 11:24:17,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 11:24:17,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 11:24:17,865 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 11:24:17,865 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-23 11:24:17,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 11:24:17 BoogieIcfgContainer [2020-12-23 11:24:17,871 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 11:24:17,873 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 11:24:17,873 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 11:24:17,882 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 11:24:17,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 11:24:16" (1/3) ... [2020-12-23 11:24:17,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7368e93a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 11:24:17, skipping insertion in model container [2020-12-23 11:24:17,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:24:16" (2/3) ... [2020-12-23 11:24:17,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7368e93a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 11:24:17, skipping insertion in model container [2020-12-23 11:24:17,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 11:24:17" (3/3) ... [2020-12-23 11:24:17,892 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2020-12-23 11:24:17,903 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 11:24:17,908 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 11:24:17,930 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 11:24:17,962 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 11:24:17,962 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 11:24:17,962 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 11:24:17,962 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 11:24:17,962 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 11:24:17,963 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 11:24:17,963 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 11:24:17,963 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 11:24:17,982 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states. [2020-12-23 11:24:17,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-23 11:24:17,991 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:24:17,992 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:24:17,993 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:24:17,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:24:17,999 INFO L82 PathProgramCache]: Analyzing trace with hash -463597657, now seen corresponding path program 1 times [2020-12-23 11:24:18,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:24:18,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748309140] [2020-12-23 11:24:18,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:24:18,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:24:18,460 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 11:24:18,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748309140] [2020-12-23 11:24:18,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:24:18,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:24:18,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577765171] [2020-12-23 11:24:18,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:24:18,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:24:18,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:24:18,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:24:18,487 INFO L87 Difference]: Start difference. First operand 143 states. Second operand 3 states. [2020-12-23 11:24:18,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:24:18,603 INFO L93 Difference]: Finished difference Result 317 states and 535 transitions. [2020-12-23 11:24:18,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:24:18,605 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2020-12-23 11:24:18,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:24:18,620 INFO L225 Difference]: With dead ends: 317 [2020-12-23 11:24:18,621 INFO L226 Difference]: Without dead ends: 219 [2020-12-23 11:24:18,625 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 11:24:18,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-12-23 11:24:18,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 217. [2020-12-23 11:24:18,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-12-23 11:24:18,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 343 transitions. [2020-12-23 11:24:18,700 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 343 transitions. Word has length 56 [2020-12-23 11:24:18,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:24:18,701 INFO L481 AbstractCegarLoop]: Abstraction has 217 states and 343 transitions. [2020-12-23 11:24:18,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:24:18,701 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 343 transitions. [2020-12-23 11:24:18,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-23 11:24:18,707 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:24:18,707 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:24:18,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 11:24:18,708 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:24:18,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:24:18,710 INFO L82 PathProgramCache]: Analyzing trace with hash -452034936, now seen corresponding path program 1 times [2020-12-23 11:24:18,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:24:18,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291767168] [2020-12-23 11:24:18,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:24:18,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:24:18,973 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 11:24:18,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291767168] [2020-12-23 11:24:18,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:24:18,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:24:18,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082444278] [2020-12-23 11:24:18,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:24:18,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:24:18,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:24:18,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:24:18,978 INFO L87 Difference]: Start difference. First operand 217 states and 343 transitions. Second operand 3 states. [2020-12-23 11:24:19,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:24:19,040 INFO L93 Difference]: Finished difference Result 533 states and 863 transitions. [2020-12-23 11:24:19,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:24:19,041 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 58 [2020-12-23 11:24:19,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:24:19,045 INFO L225 Difference]: With dead ends: 533 [2020-12-23 11:24:19,045 INFO L226 Difference]: Without dead ends: 367 [2020-12-23 11:24:19,047 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 11:24:19,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2020-12-23 11:24:19,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 365. [2020-12-23 11:24:19,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-12-23 11:24:19,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 586 transitions. [2020-12-23 11:24:19,089 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 586 transitions. Word has length 58 [2020-12-23 11:24:19,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:24:19,090 INFO L481 AbstractCegarLoop]: Abstraction has 365 states and 586 transitions. [2020-12-23 11:24:19,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:24:19,090 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 586 transitions. [2020-12-23 11:24:19,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-23 11:24:19,094 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:24:19,094 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] [2020-12-23 11:24:19,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 11:24:19,094 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:24:19,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:24:19,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1416370665, now seen corresponding path program 1 times [2020-12-23 11:24:19,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:24:19,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084012552] [2020-12-23 11:24:19,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:24:19,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:24:19,213 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 11:24:19,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084012552] [2020-12-23 11:24:19,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:24:19,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:24:19,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655568846] [2020-12-23 11:24:19,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:24:19,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:24:19,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:24:19,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:24:19,218 INFO L87 Difference]: Start difference. First operand 365 states and 586 transitions. Second operand 3 states. [2020-12-23 11:24:19,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:24:19,305 INFO L93 Difference]: Finished difference Result 961 states and 1564 transitions. [2020-12-23 11:24:19,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:24:19,306 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2020-12-23 11:24:19,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:24:19,311 INFO L225 Difference]: With dead ends: 961 [2020-12-23 11:24:19,311 INFO L226 Difference]: Without dead ends: 647 [2020-12-23 11:24:19,324 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 11:24:19,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2020-12-23 11:24:19,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 645. [2020-12-23 11:24:19,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 645 states. [2020-12-23 11:24:19,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 1042 transitions. [2020-12-23 11:24:19,396 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 1042 transitions. Word has length 60 [2020-12-23 11:24:19,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:24:19,400 INFO L481 AbstractCegarLoop]: Abstraction has 645 states and 1042 transitions. [2020-12-23 11:24:19,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:24:19,401 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 1042 transitions. [2020-12-23 11:24:19,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-23 11:24:19,405 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:24:19,405 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 11:24:19,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 11:24:19,406 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:24:19,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:24:19,406 INFO L82 PathProgramCache]: Analyzing trace with hash -2105142966, now seen corresponding path program 1 times [2020-12-23 11:24:19,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:24:19,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54134570] [2020-12-23 11:24:19,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:24:19,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:24:19,554 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 11:24:19,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54134570] [2020-12-23 11:24:19,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:24:19,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 11:24:19,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145570177] [2020-12-23 11:24:19,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 11:24:19,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:24:19,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 11:24:19,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 11:24:19,559 INFO L87 Difference]: Start difference. First operand 645 states and 1042 transitions. Second operand 5 states. [2020-12-23 11:24:19,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:24:19,870 INFO L93 Difference]: Finished difference Result 2801 states and 4612 transitions. [2020-12-23 11:24:19,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 11:24:19,870 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-12-23 11:24:19,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:24:19,884 INFO L225 Difference]: With dead ends: 2801 [2020-12-23 11:24:19,885 INFO L226 Difference]: Without dead ends: 2207 [2020-12-23 11:24:19,887 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 11:24:19,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2207 states. [2020-12-23 11:24:19,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2207 to 1164. [2020-12-23 11:24:19,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1164 states. [2020-12-23 11:24:19,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1164 states to 1164 states and 1892 transitions. [2020-12-23 11:24:19,973 INFO L78 Accepts]: Start accepts. Automaton has 1164 states and 1892 transitions. Word has length 62 [2020-12-23 11:24:19,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:24:19,975 INFO L481 AbstractCegarLoop]: Abstraction has 1164 states and 1892 transitions. [2020-12-23 11:24:19,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 11:24:19,976 INFO L276 IsEmpty]: Start isEmpty. Operand 1164 states and 1892 transitions. [2020-12-23 11:24:19,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-23 11:24:19,978 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:24:19,979 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:24:19,979 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 11:24:19,979 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:24:19,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:24:19,982 INFO L82 PathProgramCache]: Analyzing trace with hash -897426710, now seen corresponding path program 1 times [2020-12-23 11:24:19,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:24:19,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004750970] [2020-12-23 11:24:19,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:24:20,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:24:20,140 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 11:24:20,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004750970] [2020-12-23 11:24:20,140 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:24:20,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 11:24:20,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108253258] [2020-12-23 11:24:20,141 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 11:24:20,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:24:20,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 11:24:20,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 11:24:20,143 INFO L87 Difference]: Start difference. First operand 1164 states and 1892 transitions. Second operand 4 states. [2020-12-23 11:24:20,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:24:20,334 INFO L93 Difference]: Finished difference Result 3403 states and 5593 transitions. [2020-12-23 11:24:20,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 11:24:20,335 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2020-12-23 11:24:20,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:24:20,350 INFO L225 Difference]: With dead ends: 3403 [2020-12-23 11:24:20,350 INFO L226 Difference]: Without dead ends: 2290 [2020-12-23 11:24:20,353 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 11:24:20,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2290 states. [2020-12-23 11:24:20,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2290 to 1718. [2020-12-23 11:24:20,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1718 states. [2020-12-23 11:24:20,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1718 states to 1718 states and 2802 transitions. [2020-12-23 11:24:20,492 INFO L78 Accepts]: Start accepts. Automaton has 1718 states and 2802 transitions. Word has length 63 [2020-12-23 11:24:20,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:24:20,492 INFO L481 AbstractCegarLoop]: Abstraction has 1718 states and 2802 transitions. [2020-12-23 11:24:20,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 11:24:20,493 INFO L276 IsEmpty]: Start isEmpty. Operand 1718 states and 2802 transitions. [2020-12-23 11:24:20,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-23 11:24:20,495 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:24:20,495 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 11:24:20,495 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 11:24:20,495 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:24:20,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:24:20,496 INFO L82 PathProgramCache]: Analyzing trace with hash -384729531, now seen corresponding path program 1 times [2020-12-23 11:24:20,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:24:20,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338039130] [2020-12-23 11:24:20,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:24:20,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:24:20,550 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 11:24:20,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338039130] [2020-12-23 11:24:20,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:24:20,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:24:20,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817640605] [2020-12-23 11:24:20,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:24:20,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:24:20,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:24:20,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:24:20,552 INFO L87 Difference]: Start difference. First operand 1718 states and 2802 transitions. Second operand 3 states. [2020-12-23 11:24:20,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:24:20,744 INFO L93 Difference]: Finished difference Result 3773 states and 6212 transitions. [2020-12-23 11:24:20,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:24:20,744 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2020-12-23 11:24:20,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:24:20,759 INFO L225 Difference]: With dead ends: 3773 [2020-12-23 11:24:20,759 INFO L226 Difference]: Without dead ends: 2585 [2020-12-23 11:24:20,762 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 11:24:20,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2585 states. [2020-12-23 11:24:20,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2585 to 2583. [2020-12-23 11:24:20,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2583 states. [2020-12-23 11:24:20,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2583 states to 2583 states and 4221 transitions. [2020-12-23 11:24:20,947 INFO L78 Accepts]: Start accepts. Automaton has 2583 states and 4221 transitions. Word has length 64 [2020-12-23 11:24:20,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:24:20,947 INFO L481 AbstractCegarLoop]: Abstraction has 2583 states and 4221 transitions. [2020-12-23 11:24:20,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:24:20,948 INFO L276 IsEmpty]: Start isEmpty. Operand 2583 states and 4221 transitions. [2020-12-23 11:24:20,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-23 11:24:20,949 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:24:20,949 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 11:24:20,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 11:24:20,950 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:24:20,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:24:20,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1071619613, now seen corresponding path program 1 times [2020-12-23 11:24:20,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:24:20,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405977666] [2020-12-23 11:24:20,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:24:20,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:24:21,048 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 11:24:21,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405977666] [2020-12-23 11:24:21,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:24:21,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:24:21,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195640991] [2020-12-23 11:24:21,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:24:21,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:24:21,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:24:21,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:24:21,058 INFO L87 Difference]: Start difference. First operand 2583 states and 4221 transitions. Second operand 3 states. [2020-12-23 11:24:21,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:24:21,264 INFO L93 Difference]: Finished difference Result 5027 states and 8240 transitions. [2020-12-23 11:24:21,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:24:21,265 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2020-12-23 11:24:21,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:24:21,284 INFO L225 Difference]: With dead ends: 5027 [2020-12-23 11:24:21,284 INFO L226 Difference]: Without dead ends: 3593 [2020-12-23 11:24:21,288 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 11:24:21,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3593 states. [2020-12-23 11:24:21,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3593 to 3591. [2020-12-23 11:24:21,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3591 states. [2020-12-23 11:24:21,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3591 states to 3591 states and 5851 transitions. [2020-12-23 11:24:21,561 INFO L78 Accepts]: Start accepts. Automaton has 3591 states and 5851 transitions. Word has length 64 [2020-12-23 11:24:21,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:24:21,561 INFO L481 AbstractCegarLoop]: Abstraction has 3591 states and 5851 transitions. [2020-12-23 11:24:21,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:24:21,562 INFO L276 IsEmpty]: Start isEmpty. Operand 3591 states and 5851 transitions. [2020-12-23 11:24:21,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-23 11:24:21,563 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:24:21,563 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 11:24:21,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 11:24:21,563 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:24:21,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:24:21,564 INFO L82 PathProgramCache]: Analyzing trace with hash -2108370415, now seen corresponding path program 1 times [2020-12-23 11:24:21,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:24:21,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560442594] [2020-12-23 11:24:21,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:24:21,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:24:21,641 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 11:24:21,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560442594] [2020-12-23 11:24:21,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:24:21,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 11:24:21,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141195613] [2020-12-23 11:24:21,642 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 11:24:21,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:24:21,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 11:24:21,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 11:24:21,644 INFO L87 Difference]: Start difference. First operand 3591 states and 5851 transitions. Second operand 4 states. [2020-12-23 11:24:22,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:24:22,184 INFO L93 Difference]: Finished difference Result 11631 states and 19011 transitions. [2020-12-23 11:24:22,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 11:24:22,185 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2020-12-23 11:24:22,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:24:22,230 INFO L225 Difference]: With dead ends: 11631 [2020-12-23 11:24:22,230 INFO L226 Difference]: Without dead ends: 8109 [2020-12-23 11:24:22,239 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 11:24:22,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8109 states. [2020-12-23 11:24:22,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8109 to 5664. [2020-12-23 11:24:22,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5664 states. [2020-12-23 11:24:22,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5664 states to 5664 states and 9196 transitions. [2020-12-23 11:24:22,719 INFO L78 Accepts]: Start accepts. Automaton has 5664 states and 9196 transitions. Word has length 64 [2020-12-23 11:24:22,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:24:22,720 INFO L481 AbstractCegarLoop]: Abstraction has 5664 states and 9196 transitions. [2020-12-23 11:24:22,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 11:24:22,720 INFO L276 IsEmpty]: Start isEmpty. Operand 5664 states and 9196 transitions. [2020-12-23 11:24:22,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-23 11:24:22,729 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:24:22,729 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 11:24:22,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 11:24:22,729 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:24:22,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:24:22,731 INFO L82 PathProgramCache]: Analyzing trace with hash -2012593663, now seen corresponding path program 1 times [2020-12-23 11:24:22,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:24:22,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238669226] [2020-12-23 11:24:22,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:24:22,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:24:22,805 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 11:24:22,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238669226] [2020-12-23 11:24:22,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:24:22,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:24:22,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839822042] [2020-12-23 11:24:22,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:24:22,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:24:22,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:24:22,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:24:22,814 INFO L87 Difference]: Start difference. First operand 5664 states and 9196 transitions. Second operand 3 states. [2020-12-23 11:24:23,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:24:23,337 INFO L93 Difference]: Finished difference Result 11084 states and 18033 transitions. [2020-12-23 11:24:23,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:24:23,338 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2020-12-23 11:24:23,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:24:23,396 INFO L225 Difference]: With dead ends: 11084 [2020-12-23 11:24:23,397 INFO L226 Difference]: Without dead ends: 7832 [2020-12-23 11:24:23,405 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 11:24:23,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7832 states. [2020-12-23 11:24:24,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7832 to 7830. [2020-12-23 11:24:24,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7830 states. [2020-12-23 11:24:24,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7830 states to 7830 states and 12650 transitions. [2020-12-23 11:24:24,048 INFO L78 Accepts]: Start accepts. Automaton has 7830 states and 12650 transitions. Word has length 64 [2020-12-23 11:24:24,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:24:24,048 INFO L481 AbstractCegarLoop]: Abstraction has 7830 states and 12650 transitions. [2020-12-23 11:24:24,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:24:24,048 INFO L276 IsEmpty]: Start isEmpty. Operand 7830 states and 12650 transitions. [2020-12-23 11:24:24,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-23 11:24:24,049 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:24:24,049 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:24:24,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 11:24:24,050 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:24:24,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:24:24,051 INFO L82 PathProgramCache]: Analyzing trace with hash -988361583, now seen corresponding path program 1 times [2020-12-23 11:24:24,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:24:24,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054193018] [2020-12-23 11:24:24,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:24:24,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:24:24,109 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 11:24:24,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054193018] [2020-12-23 11:24:24,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:24:24,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 11:24:24,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460519584] [2020-12-23 11:24:24,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 11:24:24,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:24:24,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 11:24:24,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 11:24:24,112 INFO L87 Difference]: Start difference. First operand 7830 states and 12650 transitions. Second operand 4 states. [2020-12-23 11:24:25,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:24:25,130 INFO L93 Difference]: Finished difference Result 24459 states and 39607 transitions. [2020-12-23 11:24:25,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 11:24:25,131 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2020-12-23 11:24:25,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:24:25,177 INFO L225 Difference]: With dead ends: 24459 [2020-12-23 11:24:25,177 INFO L226 Difference]: Without dead ends: 16714 [2020-12-23 11:24:25,192 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 11:24:25,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16714 states. [2020-12-23 11:24:26,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16714 to 12229. [2020-12-23 11:24:26,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12229 states. [2020-12-23 11:24:26,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12229 states to 12229 states and 19657 transitions. [2020-12-23 11:24:26,056 INFO L78 Accepts]: Start accepts. Automaton has 12229 states and 19657 transitions. Word has length 65 [2020-12-23 11:24:26,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:24:26,056 INFO L481 AbstractCegarLoop]: Abstraction has 12229 states and 19657 transitions. [2020-12-23 11:24:26,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 11:24:26,056 INFO L276 IsEmpty]: Start isEmpty. Operand 12229 states and 19657 transitions. [2020-12-23 11:24:26,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-23 11:24:26,057 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:24:26,057 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] [2020-12-23 11:24:26,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 11:24:26,058 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:24:26,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:24:26,059 INFO L82 PathProgramCache]: Analyzing trace with hash -2145020638, now seen corresponding path program 1 times [2020-12-23 11:24:26,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:24:26,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634452747] [2020-12-23 11:24:26,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:24:26,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:24:26,181 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 11:24:26,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634452747] [2020-12-23 11:24:26,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:24:26,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 11:24:26,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126446960] [2020-12-23 11:24:26,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 11:24:26,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:24:26,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 11:24:26,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 11:24:26,184 INFO L87 Difference]: Start difference. First operand 12229 states and 19657 transitions. Second operand 4 states. [2020-12-23 11:24:27,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:24:27,985 INFO L93 Difference]: Finished difference Result 35916 states and 57700 transitions. [2020-12-23 11:24:27,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 11:24:27,985 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-12-23 11:24:27,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:24:28,052 INFO L225 Difference]: With dead ends: 35916 [2020-12-23 11:24:28,053 INFO L226 Difference]: Without dead ends: 23696 [2020-12-23 11:24:28,070 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 11:24:28,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23696 states. [2020-12-23 11:24:29,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23696 to 23694. [2020-12-23 11:24:29,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23694 states. [2020-12-23 11:24:29,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23694 states to 23694 states and 37831 transitions. [2020-12-23 11:24:29,382 INFO L78 Accepts]: Start accepts. Automaton has 23694 states and 37831 transitions. Word has length 67 [2020-12-23 11:24:29,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:24:29,383 INFO L481 AbstractCegarLoop]: Abstraction has 23694 states and 37831 transitions. [2020-12-23 11:24:29,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 11:24:29,383 INFO L276 IsEmpty]: Start isEmpty. Operand 23694 states and 37831 transitions. [2020-12-23 11:24:29,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-23 11:24:29,384 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:24:29,384 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 11:24:29,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 11:24:29,385 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:24:29,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:24:29,386 INFO L82 PathProgramCache]: Analyzing trace with hash -1021957618, now seen corresponding path program 1 times [2020-12-23 11:24:29,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:24:29,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362870368] [2020-12-23 11:24:29,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:24:29,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:24:29,422 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 11:24:29,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362870368] [2020-12-23 11:24:29,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:24:29,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:24:29,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121018434] [2020-12-23 11:24:29,424 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:24:29,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:24:29,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:24:29,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:24:29,425 INFO L87 Difference]: Start difference. First operand 23694 states and 37831 transitions. Second operand 3 states. [2020-12-23 11:24:31,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:24:31,834 INFO L93 Difference]: Finished difference Result 71044 states and 113431 transitions. [2020-12-23 11:24:31,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:24:31,835 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2020-12-23 11:24:31,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:24:31,977 INFO L225 Difference]: With dead ends: 71044 [2020-12-23 11:24:31,977 INFO L226 Difference]: Without dead ends: 47378 [2020-12-23 11:24:32,011 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 11:24:32,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47378 states. [2020-12-23 11:24:33,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47378 to 23696. [2020-12-23 11:24:33,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23696 states. [2020-12-23 11:24:33,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23696 states to 23696 states and 37833 transitions. [2020-12-23 11:24:33,840 INFO L78 Accepts]: Start accepts. Automaton has 23696 states and 37833 transitions. Word has length 68 [2020-12-23 11:24:33,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:24:33,840 INFO L481 AbstractCegarLoop]: Abstraction has 23696 states and 37833 transitions. [2020-12-23 11:24:33,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:24:33,840 INFO L276 IsEmpty]: Start isEmpty. Operand 23696 states and 37833 transitions. [2020-12-23 11:24:33,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-23 11:24:33,843 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:24:33,844 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 11:24:33,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-23 11:24:33,853 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:24:33,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:24:33,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1728755127, now seen corresponding path program 1 times [2020-12-23 11:24:33,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:24:33,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256217612] [2020-12-23 11:24:33,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:24:33,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:24:33,922 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 11:24:33,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256217612] [2020-12-23 11:24:33,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:24:33,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:24:33,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210061086] [2020-12-23 11:24:33,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:24:33,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:24:33,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:24:33,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:24:33,925 INFO L87 Difference]: Start difference. First operand 23696 states and 37833 transitions. Second operand 3 states. [2020-12-23 11:24:36,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:24:36,205 INFO L93 Difference]: Finished difference Result 57113 states and 91704 transitions. [2020-12-23 11:24:36,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:24:36,205 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2020-12-23 11:24:36,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:24:36,280 INFO L225 Difference]: With dead ends: 57113 [2020-12-23 11:24:36,281 INFO L226 Difference]: Without dead ends: 33534 [2020-12-23 11:24:36,321 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 11:24:36,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33534 states. [2020-12-23 11:24:38,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33534 to 32622. [2020-12-23 11:24:38,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32622 states. [2020-12-23 11:24:38,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32622 states to 32622 states and 51988 transitions. [2020-12-23 11:24:38,363 INFO L78 Accepts]: Start accepts. Automaton has 32622 states and 51988 transitions. Word has length 68 [2020-12-23 11:24:38,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:24:38,364 INFO L481 AbstractCegarLoop]: Abstraction has 32622 states and 51988 transitions. [2020-12-23 11:24:38,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:24:38,364 INFO L276 IsEmpty]: Start isEmpty. Operand 32622 states and 51988 transitions. [2020-12-23 11:24:38,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-23 11:24:38,365 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:24:38,365 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 11:24:38,365 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-23 11:24:38,366 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:24:38,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:24:38,366 INFO L82 PathProgramCache]: Analyzing trace with hash -465348076, now seen corresponding path program 1 times [2020-12-23 11:24:38,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:24:38,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723863367] [2020-12-23 11:24:38,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:24:38,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:24:38,579 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 11:24:38,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723863367] [2020-12-23 11:24:38,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:24:38,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:24:38,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245366721] [2020-12-23 11:24:38,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:24:38,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:24:38,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:24:38,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:24:38,582 INFO L87 Difference]: Start difference. First operand 32622 states and 51988 transitions. Second operand 3 states. [2020-12-23 11:24:42,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:24:42,142 INFO L93 Difference]: Finished difference Result 95579 states and 152246 transitions. [2020-12-23 11:24:42,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:24:42,143 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2020-12-23 11:24:42,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:24:42,299 INFO L225 Difference]: With dead ends: 95579 [2020-12-23 11:24:42,300 INFO L226 Difference]: Without dead ends: 63118 [2020-12-23 11:24:42,351 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 11:24:42,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63118 states. [2020-12-23 11:24:46,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63118 to 63116. [2020-12-23 11:24:46,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63116 states. [2020-12-23 11:24:46,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63116 states to 63116 states and 99845 transitions. [2020-12-23 11:24:46,270 INFO L78 Accepts]: Start accepts. Automaton has 63116 states and 99845 transitions. Word has length 69 [2020-12-23 11:24:46,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:24:46,270 INFO L481 AbstractCegarLoop]: Abstraction has 63116 states and 99845 transitions. [2020-12-23 11:24:46,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:24:46,270 INFO L276 IsEmpty]: Start isEmpty. Operand 63116 states and 99845 transitions. [2020-12-23 11:24:46,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-23 11:24:46,271 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:24:46,272 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 11:24:46,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-23 11:24:46,272 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:24:46,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:24:46,273 INFO L82 PathProgramCache]: Analyzing trace with hash -847134185, now seen corresponding path program 1 times [2020-12-23 11:24:46,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:24:46,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972820778] [2020-12-23 11:24:46,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:24:46,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:24:46,381 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 11:24:46,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972820778] [2020-12-23 11:24:46,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:24:46,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 11:24:46,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349823460] [2020-12-23 11:24:46,382 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 11:24:46,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:24:46,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 11:24:46,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 11:24:46,383 INFO L87 Difference]: Start difference. First operand 63116 states and 99845 transitions. Second operand 5 states. [2020-12-23 11:24:52,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:24:52,952 INFO L93 Difference]: Finished difference Result 177390 states and 280482 transitions. [2020-12-23 11:24:52,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 11:24:52,953 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-12-23 11:24:52,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:24:53,167 INFO L225 Difference]: With dead ends: 177390 [2020-12-23 11:24:53,168 INFO L226 Difference]: Without dead ends: 114288 [2020-12-23 11:24:53,241 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 11:24:53,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114288 states. [2020-12-23 11:25:00,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114288 to 114286. [2020-12-23 11:25:00,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114286 states. [2020-12-23 11:25:00,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114286 states to 114286 states and 179243 transitions. [2020-12-23 11:25:00,841 INFO L78 Accepts]: Start accepts. Automaton has 114286 states and 179243 transitions. Word has length 69 [2020-12-23 11:25:00,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:25:00,841 INFO L481 AbstractCegarLoop]: Abstraction has 114286 states and 179243 transitions. [2020-12-23 11:25:00,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 11:25:00,842 INFO L276 IsEmpty]: Start isEmpty. Operand 114286 states and 179243 transitions. [2020-12-23 11:25:00,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-23 11:25:00,844 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:25:00,844 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 11:25:00,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-23 11:25:00,845 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:25:00,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:25:00,846 INFO L82 PathProgramCache]: Analyzing trace with hash 2070551233, now seen corresponding path program 1 times [2020-12-23 11:25:00,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:25:00,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512423344] [2020-12-23 11:25:00,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:25:00,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:25:00,938 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 11:25:00,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512423344] [2020-12-23 11:25:00,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:25:00,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 11:25:00,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744906920] [2020-12-23 11:25:00,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 11:25:00,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:25:00,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 11:25:00,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 11:25:00,941 INFO L87 Difference]: Start difference. First operand 114286 states and 179243 transitions. Second operand 4 states. [2020-12-23 11:25:14,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:25:14,356 INFO L93 Difference]: Finished difference Result 335103 states and 525032 transitions. [2020-12-23 11:25:14,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 11:25:14,357 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 69 [2020-12-23 11:25:14,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:25:14,832 INFO L225 Difference]: With dead ends: 335103 [2020-12-23 11:25:14,832 INFO L226 Difference]: Without dead ends: 220873 [2020-12-23 11:25:14,940 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 11:25:15,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220873 states. [2020-12-23 11:25:29,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220873 to 220871. [2020-12-23 11:25:29,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220871 states. [2020-12-23 11:25:30,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220871 states to 220871 states and 343753 transitions. [2020-12-23 11:25:30,105 INFO L78 Accepts]: Start accepts. Automaton has 220871 states and 343753 transitions. Word has length 69 [2020-12-23 11:25:30,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:25:30,105 INFO L481 AbstractCegarLoop]: Abstraction has 220871 states and 343753 transitions. [2020-12-23 11:25:30,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 11:25:30,105 INFO L276 IsEmpty]: Start isEmpty. Operand 220871 states and 343753 transitions. [2020-12-23 11:25:30,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-23 11:25:30,109 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:25:30,109 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 11:25:30,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-23 11:25:30,109 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:25:30,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:25:30,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1773136819, now seen corresponding path program 1 times [2020-12-23 11:25:30,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:25:30,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336949182] [2020-12-23 11:25:30,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:25:30,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:25:30,143 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 11:25:30,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336949182] [2020-12-23 11:25:30,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:25:30,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:25:30,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487964804] [2020-12-23 11:25:30,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:25:30,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:25:30,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:25:30,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:25:30,145 INFO L87 Difference]: Start difference. First operand 220871 states and 343753 transitions. Second operand 3 states. [2020-12-23 11:25:57,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:25:57,049 INFO L93 Difference]: Finished difference Result 662461 states and 1031026 transitions. [2020-12-23 11:25:57,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:25:57,057 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2020-12-23 11:25:57,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:25:58,244 INFO L225 Difference]: With dead ends: 662461 [2020-12-23 11:25:58,244 INFO L226 Difference]: Without dead ends: 441681 [2020-12-23 11:25:58,493 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 11:25:58,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441681 states. [2020-12-23 11:26:16,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441681 to 220881. [2020-12-23 11:26:16,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220881 states. [2020-12-23 11:26:17,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220881 states to 220881 states and 343763 transitions. [2020-12-23 11:26:17,755 INFO L78 Accepts]: Start accepts. Automaton has 220881 states and 343763 transitions. Word has length 70 [2020-12-23 11:26:17,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:26:17,756 INFO L481 AbstractCegarLoop]: Abstraction has 220881 states and 343763 transitions. [2020-12-23 11:26:17,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:26:17,756 INFO L276 IsEmpty]: Start isEmpty. Operand 220881 states and 343763 transitions. [2020-12-23 11:26:17,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-23 11:26:17,759 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:26:17,760 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 11:26:17,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-23 11:26:17,761 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:26:17,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:26:17,761 INFO L82 PathProgramCache]: Analyzing trace with hash 2018513194, now seen corresponding path program 1 times [2020-12-23 11:26:17,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:26:17,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229477542] [2020-12-23 11:26:17,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:26:17,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:26:17,823 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 11:26:17,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229477542] [2020-12-23 11:26:17,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:26:17,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:26:17,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600715382] [2020-12-23 11:26:17,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:26:17,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:26:17,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:26:17,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:26:17,827 INFO L87 Difference]: Start difference. First operand 220881 states and 343763 transitions. Second operand 3 states.