/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 10:26:54,632 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 10:26:54,635 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 10:26:54,672 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 10:26:54,672 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 10:26:54,674 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 10:26:54,676 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 10:26:54,679 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 10:26:54,681 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 10:26:54,682 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 10:26:54,684 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 10:26:54,685 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 10:26:54,686 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 10:26:54,687 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 10:26:54,689 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 10:26:54,691 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 10:26:54,692 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 10:26:54,693 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 10:26:54,716 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 10:26:54,719 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 10:26:54,721 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 10:26:54,722 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 10:26:54,724 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 10:26:54,725 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 10:26:54,729 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 10:26:54,729 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 10:26:54,730 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 10:26:54,731 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 10:26:54,732 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 10:26:54,733 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 10:26:54,733 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 10:26:54,734 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 10:26:54,735 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 10:26:54,736 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 10:26:54,738 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 10:26:54,738 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 10:26:54,739 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 10:26:54,739 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 10:26:54,740 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 10:26:54,741 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 10:26:54,742 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 10:26:54,743 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 10:26:54,778 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 10:26:54,782 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 10:26:54,786 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 10:26:54,787 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 10:26:54,787 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 10:26:54,788 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 10:26:54,788 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 10:26:54,788 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 10:26:54,788 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 10:26:54,789 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 10:26:54,789 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 10:26:54,791 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 10:26:54,791 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 10:26:54,791 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 10:26:54,792 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 10:26:54,792 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 10:26:54,792 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 10:26:54,792 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 10:26:54,793 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 10:26:54,793 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 10:26:54,793 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 10:26:54,793 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 10:26:54,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 10:26:54,794 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 10:26:54,794 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 10:26:54,794 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 10:26:55,258 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 10:26:55,287 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 10:26:55,290 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 10:26:55,292 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 10:26:55,293 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 10:26:55,294 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2020-12-23 10:26:55,399 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/301f927cf/7bfa8e9be0034da19ab8185e01202acf/FLAG2fc329047 [2020-12-23 10:26:56,134 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 10:26:56,135 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2020-12-23 10:26:56,157 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/301f927cf/7bfa8e9be0034da19ab8185e01202acf/FLAG2fc329047 [2020-12-23 10:26:56,404 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/301f927cf/7bfa8e9be0034da19ab8185e01202acf [2020-12-23 10:26:56,409 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 10:26:56,412 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 10:26:56,418 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 10:26:56,418 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 10:26:56,425 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 10:26:56,426 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 10:26:56" (1/1) ... [2020-12-23 10:26:56,428 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e37d493 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:26:56, skipping insertion in model container [2020-12-23 10:26:56,428 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 10:26:56" (1/1) ... [2020-12-23 10:26:56,437 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 10:26:56,486 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~ep12~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep13~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep21~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep23~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep31~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep32~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~init__r121~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r131~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r211~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r231~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r311~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r321~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r122~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r132~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r212~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r232~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r312~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r322~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_1780~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p12_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_1911~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_1~0,] left hand side expression in assignment: lhs: VariableLHS[~assert__arg~0,] [2020-12-23 10:26:56,745 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[6831,6844] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~nl3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p31_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p32_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~nl2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p21_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p23_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~st1~0,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_2009~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] [2020-12-23 10:26:56,789 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 10:26:56,808 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~ep12~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep13~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep21~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep23~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep31~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep32~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~init__r121~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r131~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r211~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r231~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r311~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r321~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r122~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r132~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r212~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r232~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r312~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r322~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_1780~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p12_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_1911~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_1~0,] left hand side expression in assignment: lhs: VariableLHS[~assert__arg~0,] [2020-12-23 10:26:56,894 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[6831,6844] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~nl3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p31_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p32_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~nl2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p21_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p23_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~st1~0,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_2009~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] [2020-12-23 10:26:56,967 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 10:26:57,019 INFO L208 MainTranslator]: Completed translation [2020-12-23 10:26:57,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:26:57 WrapperNode [2020-12-23 10:26:57,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 10:26:57,022 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 10:26:57,022 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 10:26:57,023 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 10:26:57,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:26:57" (1/1) ... [2020-12-23 10:26:57,048 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:26:57" (1/1) ... [2020-12-23 10:26:57,121 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 10:26:57,125 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 10:26:57,125 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 10:26:57,125 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 10:26:57,141 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:26:57" (1/1) ... [2020-12-23 10:26:57,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:26:57" (1/1) ... [2020-12-23 10:26:57,163 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:26:57" (1/1) ... [2020-12-23 10:26:57,166 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:26:57" (1/1) ... [2020-12-23 10:26:57,184 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:26:57" (1/1) ... [2020-12-23 10:26:57,200 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:26:57" (1/1) ... [2020-12-23 10:26:57,212 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:26:57" (1/1) ... [2020-12-23 10:26:57,220 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 10:26:57,224 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 10:26:57,224 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 10:26:57,224 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 10:26:57,229 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:26:57" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 10:26:57,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 10:26:57,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 10:26:57,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 10:26:57,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 10:26:58,395 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 10:26:58,396 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-23 10:26:58,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 10:26:58 BoogieIcfgContainer [2020-12-23 10:26:58,398 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 10:26:58,400 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 10:26:58,401 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 10:26:58,405 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 10:26:58,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 10:26:56" (1/3) ... [2020-12-23 10:26:58,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@491a76b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 10:26:58, skipping insertion in model container [2020-12-23 10:26:58,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:26:57" (2/3) ... [2020-12-23 10:26:58,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@491a76b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 10:26:58, skipping insertion in model container [2020-12-23 10:26:58,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 10:26:58" (3/3) ... [2020-12-23 10:26:58,409 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2020-12-23 10:26:58,417 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 10:26:58,423 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 10:26:58,445 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 10:26:58,478 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 10:26:58,478 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 10:26:58,478 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 10:26:58,478 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 10:26:58,479 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 10:26:58,479 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 10:26:58,479 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 10:26:58,479 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 10:26:58,500 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states. [2020-12-23 10:26:58,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-23 10:26:58,511 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:26:58,512 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:26:58,513 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:26:58,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:26:58,520 INFO L82 PathProgramCache]: Analyzing trace with hash -1933157835, now seen corresponding path program 1 times [2020-12-23 10:26:58,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:26:58,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911117405] [2020-12-23 10:26:58,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:26:58,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:26:59,048 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 10:26:59,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911117405] [2020-12-23 10:26:59,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:26:59,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:26:59,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545316183] [2020-12-23 10:26:59,057 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:26:59,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:26:59,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:26:59,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:26:59,078 INFO L87 Difference]: Start difference. First operand 135 states. Second operand 3 states. [2020-12-23 10:26:59,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:26:59,250 INFO L93 Difference]: Finished difference Result 288 states and 491 transitions. [2020-12-23 10:26:59,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:26:59,256 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2020-12-23 10:26:59,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:26:59,292 INFO L225 Difference]: With dead ends: 288 [2020-12-23 10:26:59,292 INFO L226 Difference]: Without dead ends: 201 [2020-12-23 10:26:59,301 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:26:59,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-12-23 10:26:59,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 199. [2020-12-23 10:26:59,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-12-23 10:26:59,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 313 transitions. [2020-12-23 10:26:59,369 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 313 transitions. Word has length 57 [2020-12-23 10:26:59,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:26:59,370 INFO L481 AbstractCegarLoop]: Abstraction has 199 states and 313 transitions. [2020-12-23 10:26:59,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:26:59,371 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 313 transitions. [2020-12-23 10:26:59,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-23 10:26:59,374 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:26:59,374 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:26:59,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 10:26:59,375 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:26:59,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:26:59,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1883490782, now seen corresponding path program 1 times [2020-12-23 10:26:59,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:26:59,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240047946] [2020-12-23 10:26:59,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:26:59,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:26:59,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:26:59,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240047946] [2020-12-23 10:26:59,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:26:59,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:26:59,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300120854] [2020-12-23 10:26:59,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:26:59,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:26:59,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:26:59,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:26:59,608 INFO L87 Difference]: Start difference. First operand 199 states and 313 transitions. Second operand 3 states. [2020-12-23 10:26:59,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:26:59,685 INFO L93 Difference]: Finished difference Result 475 states and 769 transitions. [2020-12-23 10:26:59,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:26:59,686 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2020-12-23 10:26:59,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:26:59,692 INFO L225 Difference]: With dead ends: 475 [2020-12-23 10:26:59,692 INFO L226 Difference]: Without dead ends: 330 [2020-12-23 10:26:59,699 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:26:59,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2020-12-23 10:26:59,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 328. [2020-12-23 10:26:59,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2020-12-23 10:26:59,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 525 transitions. [2020-12-23 10:26:59,782 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 525 transitions. Word has length 59 [2020-12-23 10:26:59,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:26:59,783 INFO L481 AbstractCegarLoop]: Abstraction has 328 states and 525 transitions. [2020-12-23 10:26:59,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:26:59,786 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 525 transitions. [2020-12-23 10:26:59,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-23 10:26:59,792 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:26:59,792 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:26:59,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 10:26:59,792 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:26:59,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:26:59,795 INFO L82 PathProgramCache]: Analyzing trace with hash -111872728, now seen corresponding path program 1 times [2020-12-23 10:26:59,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:26:59,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15963435] [2020-12-23 10:26:59,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:26:59,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:26:59,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:26:59,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15963435] [2020-12-23 10:26:59,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:26:59,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:26:59,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789698866] [2020-12-23 10:26:59,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:26:59,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:26:59,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:26:59,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:26:59,965 INFO L87 Difference]: Start difference. First operand 328 states and 525 transitions. Second operand 3 states. [2020-12-23 10:27:00,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:27:00,056 INFO L93 Difference]: Finished difference Result 603 states and 981 transitions. [2020-12-23 10:27:00,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:27:00,057 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2020-12-23 10:27:00,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:27:00,061 INFO L225 Difference]: With dead ends: 603 [2020-12-23 10:27:00,062 INFO L226 Difference]: Without dead ends: 458 [2020-12-23 10:27:00,063 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:27:00,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2020-12-23 10:27:00,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 456. [2020-12-23 10:27:00,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 456 states. [2020-12-23 10:27:00,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 735 transitions. [2020-12-23 10:27:00,100 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 735 transitions. Word has length 61 [2020-12-23 10:27:00,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:27:00,101 INFO L481 AbstractCegarLoop]: Abstraction has 456 states and 735 transitions. [2020-12-23 10:27:00,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:27:00,101 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 735 transitions. [2020-12-23 10:27:00,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-23 10:27:00,105 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:27:00,106 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:27:00,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 10:27:00,106 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:27:00,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:27:00,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1275396395, now seen corresponding path program 1 times [2020-12-23 10:27:00,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:27:00,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350433164] [2020-12-23 10:27:00,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:27:00,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:27:00,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:27:00,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350433164] [2020-12-23 10:27:00,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:27:00,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:27:00,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46739293] [2020-12-23 10:27:00,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:27:00,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:27:00,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:27:00,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:27:00,236 INFO L87 Difference]: Start difference. First operand 456 states and 735 transitions. Second operand 3 states. [2020-12-23 10:27:00,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:27:00,338 INFO L93 Difference]: Finished difference Result 1172 states and 1911 transitions. [2020-12-23 10:27:00,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:27:00,340 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2020-12-23 10:27:00,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:27:00,346 INFO L225 Difference]: With dead ends: 1172 [2020-12-23 10:27:00,346 INFO L226 Difference]: Without dead ends: 793 [2020-12-23 10:27:00,352 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:27:00,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2020-12-23 10:27:00,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 791. [2020-12-23 10:27:00,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 791 states. [2020-12-23 10:27:00,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 1277 transitions. [2020-12-23 10:27:00,403 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 1277 transitions. Word has length 61 [2020-12-23 10:27:00,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:27:00,403 INFO L481 AbstractCegarLoop]: Abstraction has 791 states and 1277 transitions. [2020-12-23 10:27:00,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:27:00,404 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 1277 transitions. [2020-12-23 10:27:00,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-23 10:27:00,405 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:27:00,405 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, 1] [2020-12-23 10:27:00,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 10:27:00,406 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:27:00,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:27:00,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1280827262, now seen corresponding path program 1 times [2020-12-23 10:27:00,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:27:00,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272938665] [2020-12-23 10:27:00,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:27:00,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:27:00,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:27:00,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272938665] [2020-12-23 10:27:00,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:27:00,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 10:27:00,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596275699] [2020-12-23 10:27:00,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 10:27:00,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:27:00,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 10:27:00,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 10:27:00,514 INFO L87 Difference]: Start difference. First operand 791 states and 1277 transitions. Second operand 5 states. [2020-12-23 10:27:00,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:27:00,718 INFO L93 Difference]: Finished difference Result 2945 states and 4837 transitions. [2020-12-23 10:27:00,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 10:27:00,719 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-12-23 10:27:00,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:27:00,734 INFO L225 Difference]: With dead ends: 2945 [2020-12-23 10:27:00,734 INFO L226 Difference]: Without dead ends: 2231 [2020-12-23 10:27:00,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 10:27:00,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2231 states. [2020-12-23 10:27:00,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2231 to 1452. [2020-12-23 10:27:00,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1452 states. [2020-12-23 10:27:00,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 2348 transitions. [2020-12-23 10:27:00,888 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 2348 transitions. Word has length 63 [2020-12-23 10:27:00,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:27:00,888 INFO L481 AbstractCegarLoop]: Abstraction has 1452 states and 2348 transitions. [2020-12-23 10:27:00,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 10:27:00,889 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 2348 transitions. [2020-12-23 10:27:00,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-23 10:27:00,890 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:27:00,890 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:27:00,890 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 10:27:00,890 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:27:00,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:27:00,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1113443658, now seen corresponding path program 1 times [2020-12-23 10:27:00,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:27:00,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208871777] [2020-12-23 10:27:00,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:27:00,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:27:00,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:27:00,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208871777] [2020-12-23 10:27:00,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:27:00,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 10:27:00,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223281316] [2020-12-23 10:27:00,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 10:27:00,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:27:00,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 10:27:00,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 10:27:00,963 INFO L87 Difference]: Start difference. First operand 1452 states and 2348 transitions. Second operand 4 states. [2020-12-23 10:27:01,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:27:01,177 INFO L93 Difference]: Finished difference Result 3856 states and 6322 transitions. [2020-12-23 10:27:01,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 10:27:01,177 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2020-12-23 10:27:01,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:27:01,192 INFO L225 Difference]: With dead ends: 3856 [2020-12-23 10:27:01,192 INFO L226 Difference]: Without dead ends: 2483 [2020-12-23 10:27:01,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 10:27:01,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2483 states. [2020-12-23 10:27:01,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2483 to 2147. [2020-12-23 10:27:01,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2147 states. [2020-12-23 10:27:01,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2147 states to 2147 states and 3491 transitions. [2020-12-23 10:27:01,360 INFO L78 Accepts]: Start accepts. Automaton has 2147 states and 3491 transitions. Word has length 64 [2020-12-23 10:27:01,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:27:01,360 INFO L481 AbstractCegarLoop]: Abstraction has 2147 states and 3491 transitions. [2020-12-23 10:27:01,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 10:27:01,361 INFO L276 IsEmpty]: Start isEmpty. Operand 2147 states and 3491 transitions. [2020-12-23 10:27:01,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-23 10:27:01,362 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:27:01,362 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:27:01,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 10:27:01,363 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:27:01,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:27:01,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1248232611, now seen corresponding path program 1 times [2020-12-23 10:27:01,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:27:01,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319874031] [2020-12-23 10:27:01,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:27:01,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:27:01,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:27:01,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319874031] [2020-12-23 10:27:01,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:27:01,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:27:01,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770263814] [2020-12-23 10:27:01,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:27:01,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:27:01,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:27:01,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:27:01,425 INFO L87 Difference]: Start difference. First operand 2147 states and 3491 transitions. Second operand 3 states. [2020-12-23 10:27:01,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:27:01,615 INFO L93 Difference]: Finished difference Result 4165 states and 6807 transitions. [2020-12-23 10:27:01,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:27:01,616 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2020-12-23 10:27:01,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:27:01,634 INFO L225 Difference]: With dead ends: 4165 [2020-12-23 10:27:01,634 INFO L226 Difference]: Without dead ends: 3011 [2020-12-23 10:27:01,641 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:27:01,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3011 states. [2020-12-23 10:27:01,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3011 to 3009. [2020-12-23 10:27:01,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3009 states. [2020-12-23 10:27:01,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3009 states to 3009 states and 4878 transitions. [2020-12-23 10:27:01,872 INFO L78 Accepts]: Start accepts. Automaton has 3009 states and 4878 transitions. Word has length 64 [2020-12-23 10:27:01,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:27:01,872 INFO L481 AbstractCegarLoop]: Abstraction has 3009 states and 4878 transitions. [2020-12-23 10:27:01,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:27:01,873 INFO L276 IsEmpty]: Start isEmpty. Operand 3009 states and 4878 transitions. [2020-12-23 10:27:01,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-23 10:27:01,874 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:27:01,875 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:27:01,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 10:27:01,875 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:27:01,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:27:01,876 INFO L82 PathProgramCache]: Analyzing trace with hash -358605347, now seen corresponding path program 1 times [2020-12-23 10:27:01,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:27:01,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587768649] [2020-12-23 10:27:01,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:27:01,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:27:01,938 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 10:27:01,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587768649] [2020-12-23 10:27:01,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:27:01,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:27:01,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387789465] [2020-12-23 10:27:01,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:27:01,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:27:01,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:27:01,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:27:01,941 INFO L87 Difference]: Start difference. First operand 3009 states and 4878 transitions. Second operand 3 states. [2020-12-23 10:27:02,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:27:02,251 INFO L93 Difference]: Finished difference Result 6431 states and 10590 transitions. [2020-12-23 10:27:02,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:27:02,252 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2020-12-23 10:27:02,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:27:02,277 INFO L225 Difference]: With dead ends: 6431 [2020-12-23 10:27:02,277 INFO L226 Difference]: Without dead ends: 4345 [2020-12-23 10:27:02,283 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:27:02,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4345 states. [2020-12-23 10:27:02,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4345 to 4343. [2020-12-23 10:27:02,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4343 states. [2020-12-23 10:27:02,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4343 states to 4343 states and 7079 transitions. [2020-12-23 10:27:02,587 INFO L78 Accepts]: Start accepts. Automaton has 4343 states and 7079 transitions. Word has length 64 [2020-12-23 10:27:02,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:27:02,587 INFO L481 AbstractCegarLoop]: Abstraction has 4343 states and 7079 transitions. [2020-12-23 10:27:02,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:27:02,588 INFO L276 IsEmpty]: Start isEmpty. Operand 4343 states and 7079 transitions. [2020-12-23 10:27:02,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-23 10:27:02,596 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:27:02,596 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:27:02,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 10:27:02,596 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:27:02,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:27:02,598 INFO L82 PathProgramCache]: Analyzing trace with hash -214961207, now seen corresponding path program 1 times [2020-12-23 10:27:02,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:27:02,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933891614] [2020-12-23 10:27:02,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:27:02,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:27:02,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:27:02,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933891614] [2020-12-23 10:27:02,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:27:02,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 10:27:02,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090035868] [2020-12-23 10:27:02,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 10:27:02,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:27:02,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 10:27:02,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 10:27:02,693 INFO L87 Difference]: Start difference. First operand 4343 states and 7079 transitions. Second operand 4 states. [2020-12-23 10:27:03,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:27:03,250 INFO L93 Difference]: Finished difference Result 12351 states and 20249 transitions. [2020-12-23 10:27:03,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 10:27:03,250 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2020-12-23 10:27:03,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:27:03,298 INFO L225 Difference]: With dead ends: 12351 [2020-12-23 10:27:03,298 INFO L226 Difference]: Without dead ends: 8090 [2020-12-23 10:27:03,308 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 10:27:03,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8090 states. [2020-12-23 10:27:03,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8090 to 6911. [2020-12-23 10:27:03,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6911 states. [2020-12-23 10:27:03,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6911 states to 6911 states and 11221 transitions. [2020-12-23 10:27:03,912 INFO L78 Accepts]: Start accepts. Automaton has 6911 states and 11221 transitions. Word has length 65 [2020-12-23 10:27:03,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:27:03,913 INFO L481 AbstractCegarLoop]: Abstraction has 6911 states and 11221 transitions. [2020-12-23 10:27:03,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 10:27:03,913 INFO L276 IsEmpty]: Start isEmpty. Operand 6911 states and 11221 transitions. [2020-12-23 10:27:03,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-23 10:27:03,914 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:27:03,914 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:27:03,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 10:27:03,915 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:27:03,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:27:03,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1872749021, now seen corresponding path program 1 times [2020-12-23 10:27:03,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:27:03,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677288138] [2020-12-23 10:27:03,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:27:03,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:27:04,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:27:04,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677288138] [2020-12-23 10:27:04,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:27:04,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 10:27:04,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052832591] [2020-12-23 10:27:04,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 10:27:04,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:27:04,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 10:27:04,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 10:27:04,080 INFO L87 Difference]: Start difference. First operand 6911 states and 11221 transitions. Second operand 4 states. [2020-12-23 10:27:04,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:27:04,951 INFO L93 Difference]: Finished difference Result 19177 states and 31299 transitions. [2020-12-23 10:27:04,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 10:27:04,952 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2020-12-23 10:27:04,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:27:05,021 INFO L225 Difference]: With dead ends: 19177 [2020-12-23 10:27:05,021 INFO L226 Difference]: Without dead ends: 12348 [2020-12-23 10:27:05,036 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 10:27:05,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12348 states. [2020-12-23 10:27:05,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12348 to 10779. [2020-12-23 10:27:05,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10779 states. [2020-12-23 10:27:05,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10779 states to 10779 states and 17427 transitions. [2020-12-23 10:27:05,908 INFO L78 Accepts]: Start accepts. Automaton has 10779 states and 17427 transitions. Word has length 66 [2020-12-23 10:27:05,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:27:05,908 INFO L481 AbstractCegarLoop]: Abstraction has 10779 states and 17427 transitions. [2020-12-23 10:27:05,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 10:27:05,909 INFO L276 IsEmpty]: Start isEmpty. Operand 10779 states and 17427 transitions. [2020-12-23 10:27:05,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-23 10:27:05,910 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:27:05,910 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:27:05,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 10:27:05,911 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:27:05,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:27:05,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1396799506, now seen corresponding path program 1 times [2020-12-23 10:27:05,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:27:05,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063638332] [2020-12-23 10:27:05,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:27:05,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:27:06,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:27:06,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063638332] [2020-12-23 10:27:06,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:27:06,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 10:27:06,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744011719] [2020-12-23 10:27:06,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 10:27:06,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:27:06,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 10:27:06,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 10:27:06,085 INFO L87 Difference]: Start difference. First operand 10779 states and 17427 transitions. Second operand 5 states. [2020-12-23 10:27:07,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:27:07,413 INFO L93 Difference]: Finished difference Result 25359 states and 41228 transitions. [2020-12-23 10:27:07,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 10:27:07,414 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2020-12-23 10:27:07,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:27:07,457 INFO L225 Difference]: With dead ends: 25359 [2020-12-23 10:27:07,457 INFO L226 Difference]: Without dead ends: 14662 [2020-12-23 10:27:07,475 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 10:27:07,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14662 states. [2020-12-23 10:27:08,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14662 to 10779. [2020-12-23 10:27:08,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10779 states. [2020-12-23 10:27:08,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10779 states to 10779 states and 17302 transitions. [2020-12-23 10:27:08,327 INFO L78 Accepts]: Start accepts. Automaton has 10779 states and 17302 transitions. Word has length 68 [2020-12-23 10:27:08,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:27:08,328 INFO L481 AbstractCegarLoop]: Abstraction has 10779 states and 17302 transitions. [2020-12-23 10:27:08,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 10:27:08,328 INFO L276 IsEmpty]: Start isEmpty. Operand 10779 states and 17302 transitions. [2020-12-23 10:27:08,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-23 10:27:08,329 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:27:08,329 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:27:08,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 10:27:08,330 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:27:08,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:27:08,330 INFO L82 PathProgramCache]: Analyzing trace with hash -164512453, now seen corresponding path program 1 times [2020-12-23 10:27:08,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:27:08,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716978914] [2020-12-23 10:27:08,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:27:08,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:27:08,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:27:08,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716978914] [2020-12-23 10:27:08,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:27:08,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 10:27:08,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382282442] [2020-12-23 10:27:08,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 10:27:08,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:27:08,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 10:27:08,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 10:27:08,453 INFO L87 Difference]: Start difference. First operand 10779 states and 17302 transitions. Second operand 4 states. [2020-12-23 10:27:09,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:27:09,821 INFO L93 Difference]: Finished difference Result 31699 states and 50901 transitions. [2020-12-23 10:27:09,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 10:27:09,822 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2020-12-23 10:27:09,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:27:09,890 INFO L225 Difference]: With dead ends: 31699 [2020-12-23 10:27:09,891 INFO L226 Difference]: Without dead ends: 20929 [2020-12-23 10:27:09,910 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 10:27:09,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20929 states. [2020-12-23 10:27:11,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20929 to 20927. [2020-12-23 10:27:11,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20927 states. [2020-12-23 10:27:11,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20927 states to 20927 states and 33387 transitions. [2020-12-23 10:27:11,484 INFO L78 Accepts]: Start accepts. Automaton has 20927 states and 33387 transitions. Word has length 71 [2020-12-23 10:27:11,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:27:11,484 INFO L481 AbstractCegarLoop]: Abstraction has 20927 states and 33387 transitions. [2020-12-23 10:27:11,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 10:27:11,484 INFO L276 IsEmpty]: Start isEmpty. Operand 20927 states and 33387 transitions. [2020-12-23 10:27:11,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-23 10:27:11,485 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:27:11,485 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:27:11,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-23 10:27:11,486 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:27:11,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:27:11,486 INFO L82 PathProgramCache]: Analyzing trace with hash 667892135, now seen corresponding path program 1 times [2020-12-23 10:27:11,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:27:11,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216769627] [2020-12-23 10:27:11,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:27:11,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:27:11,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:27:11,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216769627] [2020-12-23 10:27:11,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:27:11,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:27:11,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472955283] [2020-12-23 10:27:11,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:27:11,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:27:11,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:27:11,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:27:11,529 INFO L87 Difference]: Start difference. First operand 20927 states and 33387 transitions. Second operand 3 states. [2020-12-23 10:27:14,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:27:14,318 INFO L93 Difference]: Finished difference Result 62743 states and 100099 transitions. [2020-12-23 10:27:14,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:27:14,320 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2020-12-23 10:27:14,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:27:14,411 INFO L225 Difference]: With dead ends: 62743 [2020-12-23 10:27:14,412 INFO L226 Difference]: Without dead ends: 41844 [2020-12-23 10:27:14,445 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:27:14,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41844 states. [2020-12-23 10:27:16,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41844 to 20929. [2020-12-23 10:27:16,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20929 states. [2020-12-23 10:27:16,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20929 states to 20929 states and 33389 transitions. [2020-12-23 10:27:16,249 INFO L78 Accepts]: Start accepts. Automaton has 20929 states and 33389 transitions. Word has length 72 [2020-12-23 10:27:16,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:27:16,250 INFO L481 AbstractCegarLoop]: Abstraction has 20929 states and 33389 transitions. [2020-12-23 10:27:16,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:27:16,250 INFO L276 IsEmpty]: Start isEmpty. Operand 20929 states and 33389 transitions. [2020-12-23 10:27:16,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-23 10:27:16,251 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:27:16,251 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:27:16,251 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-23 10:27:16,251 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:27:16,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:27:16,252 INFO L82 PathProgramCache]: Analyzing trace with hash -808520295, now seen corresponding path program 1 times [2020-12-23 10:27:16,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:27:16,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265503409] [2020-12-23 10:27:16,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:27:16,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:27:16,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:27:16,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265503409] [2020-12-23 10:27:16,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:27:16,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:27:16,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713236105] [2020-12-23 10:27:16,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:27:16,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:27:16,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:27:16,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:27:16,317 INFO L87 Difference]: Start difference. First operand 20929 states and 33389 transitions. Second operand 3 states. [2020-12-23 10:27:18,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:27:18,957 INFO L93 Difference]: Finished difference Result 61383 states and 97998 transitions. [2020-12-23 10:27:18,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:27:18,958 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2020-12-23 10:27:18,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:27:19,048 INFO L225 Difference]: With dead ends: 61383 [2020-12-23 10:27:19,049 INFO L226 Difference]: Without dead ends: 40610 [2020-12-23 10:27:19,074 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:27:19,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40610 states. [2020-12-23 10:27:22,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40610 to 40608. [2020-12-23 10:27:22,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40608 states. [2020-12-23 10:27:22,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40608 states to 40608 states and 64369 transitions. [2020-12-23 10:27:22,194 INFO L78 Accepts]: Start accepts. Automaton has 40608 states and 64369 transitions. Word has length 73 [2020-12-23 10:27:22,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:27:22,195 INFO L481 AbstractCegarLoop]: Abstraction has 40608 states and 64369 transitions. [2020-12-23 10:27:22,195 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:27:22,195 INFO L276 IsEmpty]: Start isEmpty. Operand 40608 states and 64369 transitions. [2020-12-23 10:27:22,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-23 10:27:22,196 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:27:22,196 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:27:22,197 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-23 10:27:22,197 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:27:22,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:27:22,197 INFO L82 PathProgramCache]: Analyzing trace with hash -1547459556, now seen corresponding path program 1 times [2020-12-23 10:27:22,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:27:22,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667012987] [2020-12-23 10:27:22,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:27:22,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:27:22,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:27:22,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667012987] [2020-12-23 10:27:22,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:27:22,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 10:27:22,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355629742] [2020-12-23 10:27:22,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 10:27:22,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:27:22,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 10:27:22,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 10:27:22,372 INFO L87 Difference]: Start difference. First operand 40608 states and 64369 transitions. Second operand 5 states. [2020-12-23 10:27:27,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:27:27,824 INFO L93 Difference]: Finished difference Result 119148 states and 188934 transitions. [2020-12-23 10:27:27,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 10:27:27,824 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-12-23 10:27:27,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:27:27,987 INFO L225 Difference]: With dead ends: 119148 [2020-12-23 10:27:27,987 INFO L226 Difference]: Without dead ends: 78554 [2020-12-23 10:27:28,026 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 10:27:28,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78554 states. [2020-12-23 10:27:33,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78554 to 78552. [2020-12-23 10:27:33,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78552 states. [2020-12-23 10:27:33,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78552 states to 78552 states and 123683 transitions. [2020-12-23 10:27:33,591 INFO L78 Accepts]: Start accepts. Automaton has 78552 states and 123683 transitions. Word has length 73 [2020-12-23 10:27:33,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:27:33,592 INFO L481 AbstractCegarLoop]: Abstraction has 78552 states and 123683 transitions. [2020-12-23 10:27:33,592 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 10:27:33,592 INFO L276 IsEmpty]: Start isEmpty. Operand 78552 states and 123683 transitions. [2020-12-23 10:27:33,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-23 10:27:33,594 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:27:33,594 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:27:33,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-23 10:27:33,595 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:27:33,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:27:33,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1975872346, now seen corresponding path program 1 times [2020-12-23 10:27:33,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:27:33,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92133581] [2020-12-23 10:27:33,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:27:33,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:27:33,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:27:33,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92133581] [2020-12-23 10:27:33,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:27:33,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 10:27:33,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362785688] [2020-12-23 10:27:33,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 10:27:33,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:27:33,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 10:27:33,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 10:27:33,704 INFO L87 Difference]: Start difference. First operand 78552 states and 123683 transitions. Second operand 4 states. [2020-12-23 10:27:44,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:27:44,363 INFO L93 Difference]: Finished difference Result 230583 states and 363068 transitions. [2020-12-23 10:27:44,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 10:27:44,364 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2020-12-23 10:27:44,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:27:44,656 INFO L225 Difference]: With dead ends: 230583 [2020-12-23 10:27:44,656 INFO L226 Difference]: Without dead ends: 152087 [2020-12-23 10:27:44,877 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 10:27:45,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152087 states. [2020-12-23 10:27:55,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152087 to 152085. [2020-12-23 10:27:55,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152085 states. [2020-12-23 10:27:56,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152085 states to 152085 states and 237673 transitions. [2020-12-23 10:27:56,013 INFO L78 Accepts]: Start accepts. Automaton has 152085 states and 237673 transitions. Word has length 73 [2020-12-23 10:27:56,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:27:56,014 INFO L481 AbstractCegarLoop]: Abstraction has 152085 states and 237673 transitions. [2020-12-23 10:27:56,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 10:27:56,014 INFO L276 IsEmpty]: Start isEmpty. Operand 152085 states and 237673 transitions. [2020-12-23 10:27:56,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-23 10:27:56,016 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:27:56,016 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:27:56,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-23 10:27:56,017 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:27:56,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:27:56,017 INFO L82 PathProgramCache]: Analyzing trace with hash -2004902810, now seen corresponding path program 1 times [2020-12-23 10:27:56,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:27:56,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705074072] [2020-12-23 10:27:56,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:27:56,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:27:56,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:27:56,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705074072] [2020-12-23 10:27:56,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:27:56,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:27:56,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860385994] [2020-12-23 10:27:56,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:27:56,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:27:56,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:27:56,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:27:56,061 INFO L87 Difference]: Start difference. First operand 152085 states and 237673 transitions. Second operand 3 states. [2020-12-23 10:28:17,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:28:17,330 INFO L93 Difference]: Finished difference Result 456103 states and 712786 transitions. [2020-12-23 10:28:17,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:28:17,334 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2020-12-23 10:28:17,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:28:17,967 INFO L225 Difference]: With dead ends: 456103 [2020-12-23 10:28:17,967 INFO L226 Difference]: Without dead ends: 304109 [2020-12-23 10:28:18,110 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:28:18,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304109 states. [2020-12-23 10:28:31,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304109 to 152095. [2020-12-23 10:28:31,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152095 states. [2020-12-23 10:28:31,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152095 states to 152095 states and 237683 transitions. [2020-12-23 10:28:31,559 INFO L78 Accepts]: Start accepts. Automaton has 152095 states and 237683 transitions. Word has length 74 [2020-12-23 10:28:31,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:28:31,560 INFO L481 AbstractCegarLoop]: Abstraction has 152095 states and 237683 transitions. [2020-12-23 10:28:31,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:28:31,560 INFO L276 IsEmpty]: Start isEmpty. Operand 152095 states and 237683 transitions. [2020-12-23 10:28:31,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-23 10:28:31,562 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:28:31,562 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:28:31,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-23 10:28:31,562 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:28:31,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:28:31,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1175997191, now seen corresponding path program 1 times [2020-12-23 10:28:31,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:28:31,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043134599] [2020-12-23 10:28:31,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:28:31,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:28:31,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:28:31,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043134599] [2020-12-23 10:28:31,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:28:31,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 10:28:31,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031846233] [2020-12-23 10:28:31,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 10:28:31,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:28:31,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 10:28:31,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 10:28:31,690 INFO L87 Difference]: Start difference. First operand 152095 states and 237683 transitions. Second operand 4 states. [2020-12-23 10:28:55,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:28:55,243 INFO L93 Difference]: Finished difference Result 446123 states and 697112 transitions. [2020-12-23 10:28:55,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 10:28:55,243 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 75 [2020-12-23 10:28:55,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:28:56,041 INFO L225 Difference]: With dead ends: 446123 [2020-12-23 10:28:56,041 INFO L226 Difference]: Without dead ends: 294129 [2020-12-23 10:28:56,215 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 10:28:56,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294129 states. [2020-12-23 10:29:20,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294129 to 294127. [2020-12-23 10:29:20,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294127 states.