/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_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 10:43:19,828 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 10:43:19,830 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 10:43:19,869 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 10:43:19,870 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 10:43:19,872 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 10:43:19,873 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 10:43:19,887 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 10:43:19,890 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 10:43:19,898 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 10:43:19,902 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 10:43:19,903 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 10:43:19,904 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 10:43:19,906 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 10:43:19,908 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 10:43:19,909 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 10:43:19,911 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 10:43:19,913 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 10:43:19,920 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 10:43:19,926 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 10:43:19,928 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 10:43:19,930 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 10:43:19,931 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 10:43:19,932 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 10:43:19,934 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 10:43:19,938 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 10:43:19,938 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 10:43:19,939 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 10:43:19,940 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 10:43:19,941 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 10:43:19,941 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 10:43:19,942 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 10:43:19,944 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 10:43:19,944 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 10:43:19,945 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 10:43:19,946 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 10:43:19,947 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 10:43:19,973 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 10:43:19,974 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 10:43:19,975 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 10:43:19,975 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 10:43:19,976 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 10:43:19,976 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 10:43:19,976 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 10:43:19,976 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 10:43:19,977 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 10:43:19,977 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 10:43:19,977 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 10:43:19,977 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 10:43:19,977 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 10:43:19,978 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 10:43:19,978 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 10:43:19,978 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 10:43:19,978 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 10:43:19,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 10:43:19,979 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 10:43:19,979 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 10:43:19,979 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 10:43:19,979 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 10:43:19,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 10:43:19,980 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 10:43:19,980 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 10:43:19,980 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 10:43:20,352 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 10:43:20,377 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 10:43:20,380 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 10:43:20,382 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 10:43:20,382 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 10:43:20,384 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-23 10:43:20,466 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/d0316ff98/c1087d338a0a45dab8db351cb0c9252c/FLAG6cab01743 [2020-12-23 10:43:21,155 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 10:43:21,156 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-23 10:43:21,169 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/d0316ff98/c1087d338a0a45dab8db351cb0c9252c/FLAG6cab01743 [2020-12-23 10:43:21,416 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/d0316ff98/c1087d338a0a45dab8db351cb0c9252c [2020-12-23 10:43:21,419 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 10:43:21,421 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 10:43:21,424 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 10:43:21,425 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 10:43:21,429 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 10:43:21,430 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 10:43:21" (1/1) ... [2020-12-23 10:43:21,432 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13a9ff99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:43:21, skipping insertion in model container [2020-12-23 10:43:21,433 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 10:43:21" (1/1) ... [2020-12-23 10:43:21,441 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 10:43:21,501 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[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_6326~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~0,] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~0,] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_6431~0,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 10:43:21,692 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_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[4005,4018] 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[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_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_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_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_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_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_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_1~0,] [2020-12-23 10:43:21,719 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 10:43:21,734 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[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_6326~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~0,] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~0,] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_6431~0,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 10:43:21,776 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_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[4005,4018] 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[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_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_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_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_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_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_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_1~0,] [2020-12-23 10:43:21,796 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 10:43:21,818 INFO L208 MainTranslator]: Completed translation [2020-12-23 10:43:21,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:43:21 WrapperNode [2020-12-23 10:43:21,818 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 10:43:21,820 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 10:43:21,820 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 10:43:21,820 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 10:43:21,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:43:21" (1/1) ... [2020-12-23 10:43:21,839 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:43:21" (1/1) ... [2020-12-23 10:43:21,872 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 10:43:21,873 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 10:43:21,873 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 10:43:21,873 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 10:43:21,883 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:43:21" (1/1) ... [2020-12-23 10:43:21,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:43:21" (1/1) ... [2020-12-23 10:43:21,887 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:43:21" (1/1) ... [2020-12-23 10:43:21,888 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:43:21" (1/1) ... [2020-12-23 10:43:21,895 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:43:21" (1/1) ... [2020-12-23 10:43:21,900 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:43:21" (1/1) ... [2020-12-23 10:43:21,902 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:43:21" (1/1) ... [2020-12-23 10:43:21,906 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 10:43:21,907 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 10:43:21,908 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 10:43:21,908 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 10:43:21,909 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:43:21" (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 10:43:22,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 10:43:22,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 10:43:22,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 10:43:22,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 10:43:22,702 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 10:43:22,703 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-23 10:43:22,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 10:43:22 BoogieIcfgContainer [2020-12-23 10:43:22,705 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 10:43:22,707 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 10:43:22,707 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 10:43:22,711 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 10:43:22,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 10:43:21" (1/3) ... [2020-12-23 10:43:22,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@170d49d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 10:43:22, skipping insertion in model container [2020-12-23 10:43:22,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:43:21" (2/3) ... [2020-12-23 10:43:22,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@170d49d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 10:43:22, skipping insertion in model container [2020-12-23 10:43:22,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 10:43:22" (3/3) ... [2020-12-23 10:43:22,714 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-23 10:43:22,721 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 10:43:22,726 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 10:43:22,753 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 10:43:22,782 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 10:43:22,783 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 10:43:22,783 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 10:43:22,783 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 10:43:22,783 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 10:43:22,783 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 10:43:22,783 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 10:43:22,783 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 10:43:22,802 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states. [2020-12-23 10:43:22,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-23 10:43:22,810 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:43:22,811 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] [2020-12-23 10:43:22,812 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:43:22,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:43:22,818 INFO L82 PathProgramCache]: Analyzing trace with hash 716810707, now seen corresponding path program 1 times [2020-12-23 10:43:22,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:43:22,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500189310] [2020-12-23 10:43:22,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:43:22,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:43:23,204 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 10:43:23,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500189310] [2020-12-23 10:43:23,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:43:23,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:43:23,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038874764] [2020-12-23 10:43:23,212 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:43:23,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:43:23,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:43:23,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:43:23,229 INFO L87 Difference]: Start difference. First operand 87 states. Second operand 3 states. [2020-12-23 10:43:23,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:43:23,301 INFO L93 Difference]: Finished difference Result 205 states and 324 transitions. [2020-12-23 10:43:23,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:43:23,303 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2020-12-23 10:43:23,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:43:23,316 INFO L225 Difference]: With dead ends: 205 [2020-12-23 10:43:23,316 INFO L226 Difference]: Without dead ends: 132 [2020-12-23 10:43:23,320 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 10:43:23,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-12-23 10:43:23,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 130. [2020-12-23 10:43:23,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-12-23 10:43:23,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 194 transitions. [2020-12-23 10:43:23,382 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 194 transitions. Word has length 38 [2020-12-23 10:43:23,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:43:23,383 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 194 transitions. [2020-12-23 10:43:23,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:43:23,383 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 194 transitions. [2020-12-23 10:43:23,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-23 10:43:23,385 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:43:23,386 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] [2020-12-23 10:43:23,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 10:43:23,386 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:43:23,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:43:23,387 INFO L82 PathProgramCache]: Analyzing trace with hash -935293361, now seen corresponding path program 1 times [2020-12-23 10:43:23,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:43:23,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620381570] [2020-12-23 10:43:23,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:43:23,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:43:23,527 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 10:43:23,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620381570] [2020-12-23 10:43:23,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:43:23,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:43:23,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462501214] [2020-12-23 10:43:23,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:43:23,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:43:23,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:43:23,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:43:23,537 INFO L87 Difference]: Start difference. First operand 130 states and 194 transitions. Second operand 3 states. [2020-12-23 10:43:23,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:43:23,635 INFO L93 Difference]: Finished difference Result 318 states and 490 transitions. [2020-12-23 10:43:23,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:43:23,639 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2020-12-23 10:43:23,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:43:23,644 INFO L225 Difference]: With dead ends: 318 [2020-12-23 10:43:23,646 INFO L226 Difference]: Without dead ends: 208 [2020-12-23 10:43:23,649 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 10:43:23,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-12-23 10:43:23,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 206. [2020-12-23 10:43:23,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-12-23 10:43:23,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 313 transitions. [2020-12-23 10:43:23,716 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 313 transitions. Word has length 39 [2020-12-23 10:43:23,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:43:23,717 INFO L481 AbstractCegarLoop]: Abstraction has 206 states and 313 transitions. [2020-12-23 10:43:23,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:43:23,717 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 313 transitions. [2020-12-23 10:43:23,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-23 10:43:23,720 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:43:23,720 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] [2020-12-23 10:43:23,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 10:43:23,720 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:43:23,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:43:23,723 INFO L82 PathProgramCache]: Analyzing trace with hash 830312666, now seen corresponding path program 1 times [2020-12-23 10:43:23,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:43:23,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253968709] [2020-12-23 10:43:23,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:43:23,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:43:23,870 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 10:43:23,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253968709] [2020-12-23 10:43:23,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:43:23,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 10:43:23,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262302899] [2020-12-23 10:43:23,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 10:43:23,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:43:23,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 10:43:23,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 10:43:23,874 INFO L87 Difference]: Start difference. First operand 206 states and 313 transitions. Second operand 5 states. [2020-12-23 10:43:24,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:43:24,066 INFO L93 Difference]: Finished difference Result 688 states and 1068 transitions. [2020-12-23 10:43:24,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 10:43:24,067 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2020-12-23 10:43:24,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:43:24,071 INFO L225 Difference]: With dead ends: 688 [2020-12-23 10:43:24,071 INFO L226 Difference]: Without dead ends: 502 [2020-12-23 10:43:24,073 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 10:43:24,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2020-12-23 10:43:24,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 498. [2020-12-23 10:43:24,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 498 states. [2020-12-23 10:43:24,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 769 transitions. [2020-12-23 10:43:24,135 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 769 transitions. Word has length 40 [2020-12-23 10:43:24,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:43:24,135 INFO L481 AbstractCegarLoop]: Abstraction has 498 states and 769 transitions. [2020-12-23 10:43:24,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 10:43:24,136 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 769 transitions. [2020-12-23 10:43:24,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-23 10:43:24,139 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:43:24,142 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] [2020-12-23 10:43:24,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 10:43:24,143 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:43:24,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:43:24,143 INFO L82 PathProgramCache]: Analyzing trace with hash 604365756, now seen corresponding path program 1 times [2020-12-23 10:43:24,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:43:24,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736230753] [2020-12-23 10:43:24,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:43:24,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:43:24,204 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 10:43:24,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736230753] [2020-12-23 10:43:24,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:43:24,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:43:24,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870335299] [2020-12-23 10:43:24,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:43:24,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:43:24,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:43:24,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:43:24,208 INFO L87 Difference]: Start difference. First operand 498 states and 769 transitions. Second operand 3 states. [2020-12-23 10:43:24,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:43:24,289 INFO L93 Difference]: Finished difference Result 1258 states and 1951 transitions. [2020-12-23 10:43:24,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:43:24,290 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2020-12-23 10:43:24,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:43:24,295 INFO L225 Difference]: With dead ends: 1258 [2020-12-23 10:43:24,296 INFO L226 Difference]: Without dead ends: 780 [2020-12-23 10:43:24,297 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 10:43:24,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2020-12-23 10:43:24,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 778. [2020-12-23 10:43:24,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 778 states. [2020-12-23 10:43:24,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 1189 transitions. [2020-12-23 10:43:24,383 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 1189 transitions. Word has length 41 [2020-12-23 10:43:24,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:43:24,385 INFO L481 AbstractCegarLoop]: Abstraction has 778 states and 1189 transitions. [2020-12-23 10:43:24,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:43:24,385 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 1189 transitions. [2020-12-23 10:43:24,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-23 10:43:24,391 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:43:24,391 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] [2020-12-23 10:43:24,392 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 10:43:24,392 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:43:24,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:43:24,393 INFO L82 PathProgramCache]: Analyzing trace with hash 608060849, now seen corresponding path program 1 times [2020-12-23 10:43:24,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:43:24,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531067699] [2020-12-23 10:43:24,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:43:24,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:43:24,490 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 10:43:24,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531067699] [2020-12-23 10:43:24,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:43:24,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 10:43:24,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634145967] [2020-12-23 10:43:24,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 10:43:24,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:43:24,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 10:43:24,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 10:43:24,493 INFO L87 Difference]: Start difference. First operand 778 states and 1189 transitions. Second operand 5 states. [2020-12-23 10:43:24,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:43:24,808 INFO L93 Difference]: Finished difference Result 2066 states and 3175 transitions. [2020-12-23 10:43:24,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 10:43:24,809 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-12-23 10:43:24,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:43:24,817 INFO L225 Difference]: With dead ends: 2066 [2020-12-23 10:43:24,817 INFO L226 Difference]: Without dead ends: 1308 [2020-12-23 10:43:24,818 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 10:43:24,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1308 states. [2020-12-23 10:43:24,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1308 to 1306. [2020-12-23 10:43:24,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1306 states. [2020-12-23 10:43:24,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1306 states to 1306 states and 1985 transitions. [2020-12-23 10:43:24,922 INFO L78 Accepts]: Start accepts. Automaton has 1306 states and 1985 transitions. Word has length 42 [2020-12-23 10:43:24,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:43:24,923 INFO L481 AbstractCegarLoop]: Abstraction has 1306 states and 1985 transitions. [2020-12-23 10:43:24,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 10:43:24,923 INFO L276 IsEmpty]: Start isEmpty. Operand 1306 states and 1985 transitions. [2020-12-23 10:43:24,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-23 10:43:24,924 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:43:24,924 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:43:24,924 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 10:43:24,925 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:43:24,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:43:24,925 INFO L82 PathProgramCache]: Analyzing trace with hash -1912062484, now seen corresponding path program 1 times [2020-12-23 10:43:24,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:43:24,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624034713] [2020-12-23 10:43:24,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:43:24,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:43:25,007 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 10:43:25,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624034713] [2020-12-23 10:43:25,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:43:25,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 10:43:25,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925873464] [2020-12-23 10:43:25,008 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 10:43:25,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:43:25,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 10:43:25,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 10:43:25,009 INFO L87 Difference]: Start difference. First operand 1306 states and 1985 transitions. Second operand 5 states. [2020-12-23 10:43:25,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:43:25,411 INFO L93 Difference]: Finished difference Result 5490 states and 8373 transitions. [2020-12-23 10:43:25,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 10:43:25,412 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-12-23 10:43:25,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:43:25,434 INFO L225 Difference]: With dead ends: 5490 [2020-12-23 10:43:25,434 INFO L226 Difference]: Without dead ends: 4204 [2020-12-23 10:43:25,437 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-23 10:43:25,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4204 states. [2020-12-23 10:43:25,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4204 to 2590. [2020-12-23 10:43:25,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2590 states. [2020-12-23 10:43:25,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2590 states to 2590 states and 3869 transitions. [2020-12-23 10:43:25,748 INFO L78 Accepts]: Start accepts. Automaton has 2590 states and 3869 transitions. Word has length 42 [2020-12-23 10:43:25,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:43:25,749 INFO L481 AbstractCegarLoop]: Abstraction has 2590 states and 3869 transitions. [2020-12-23 10:43:25,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 10:43:25,749 INFO L276 IsEmpty]: Start isEmpty. Operand 2590 states and 3869 transitions. [2020-12-23 10:43:25,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-23 10:43:25,751 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:43:25,751 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] [2020-12-23 10:43:25,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 10:43:25,751 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:43:25,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:43:25,752 INFO L82 PathProgramCache]: Analyzing trace with hash 836148826, now seen corresponding path program 1 times [2020-12-23 10:43:25,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:43:25,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268169651] [2020-12-23 10:43:25,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:43:25,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:43:25,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:43:25,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268169651] [2020-12-23 10:43:25,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:43:25,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 10:43:25,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093902553] [2020-12-23 10:43:25,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 10:43:25,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:43:25,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 10:43:25,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 10:43:25,881 INFO L87 Difference]: Start difference. First operand 2590 states and 3869 transitions. Second operand 5 states. [2020-12-23 10:43:26,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:43:26,381 INFO L93 Difference]: Finished difference Result 5320 states and 7878 transitions. [2020-12-23 10:43:26,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 10:43:26,382 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2020-12-23 10:43:26,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:43:26,409 INFO L225 Difference]: With dead ends: 5320 [2020-12-23 10:43:26,409 INFO L226 Difference]: Without dead ends: 5318 [2020-12-23 10:43:26,411 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-23 10:43:26,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5318 states. [2020-12-23 10:43:26,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5318 to 2750. [2020-12-23 10:43:26,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2750 states. [2020-12-23 10:43:26,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2750 states to 2750 states and 4029 transitions. [2020-12-23 10:43:26,736 INFO L78 Accepts]: Start accepts. Automaton has 2750 states and 4029 transitions. Word has length 43 [2020-12-23 10:43:26,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:43:26,737 INFO L481 AbstractCegarLoop]: Abstraction has 2750 states and 4029 transitions. [2020-12-23 10:43:26,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 10:43:26,737 INFO L276 IsEmpty]: Start isEmpty. Operand 2750 states and 4029 transitions. [2020-12-23 10:43:26,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-23 10:43:26,738 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:43:26,738 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] [2020-12-23 10:43:26,738 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 10:43:26,738 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:43:26,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:43:26,739 INFO L82 PathProgramCache]: Analyzing trace with hash 161382844, now seen corresponding path program 1 times [2020-12-23 10:43:26,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:43:26,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66022721] [2020-12-23 10:43:26,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:43:26,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:43:26,783 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 10:43:26,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66022721] [2020-12-23 10:43:26,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:43:26,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:43:26,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591722790] [2020-12-23 10:43:26,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:43:26,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:43:26,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:43:26,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:43:26,786 INFO L87 Difference]: Start difference. First operand 2750 states and 4029 transitions. Second operand 3 states. [2020-12-23 10:43:27,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:43:27,125 INFO L93 Difference]: Finished difference Result 6192 states and 9053 transitions. [2020-12-23 10:43:27,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:43:27,126 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2020-12-23 10:43:27,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:43:27,144 INFO L225 Difference]: With dead ends: 6192 [2020-12-23 10:43:27,144 INFO L226 Difference]: Without dead ends: 3462 [2020-12-23 10:43:27,150 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 10:43:27,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3462 states. [2020-12-23 10:43:27,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3462 to 3440. [2020-12-23 10:43:27,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3440 states. [2020-12-23 10:43:27,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3440 states to 3440 states and 4983 transitions. [2020-12-23 10:43:27,496 INFO L78 Accepts]: Start accepts. Automaton has 3440 states and 4983 transitions. Word has length 44 [2020-12-23 10:43:27,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:43:27,496 INFO L481 AbstractCegarLoop]: Abstraction has 3440 states and 4983 transitions. [2020-12-23 10:43:27,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:43:27,496 INFO L276 IsEmpty]: Start isEmpty. Operand 3440 states and 4983 transitions. [2020-12-23 10:43:27,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-23 10:43:27,499 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:43:27,499 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:43:27,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 10:43:27,500 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:43:27,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:43:27,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1477612707, now seen corresponding path program 1 times [2020-12-23 10:43:27,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:43:27,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226828028] [2020-12-23 10:43:27,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:43:27,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:43:27,567 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:43:27,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226828028] [2020-12-23 10:43:27,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:43:27,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:43:27,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386374158] [2020-12-23 10:43:27,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:43:27,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:43:27,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:43:27,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:43:27,571 INFO L87 Difference]: Start difference. First operand 3440 states and 4983 transitions. Second operand 3 states. [2020-12-23 10:43:28,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:43:28,097 INFO L93 Difference]: Finished difference Result 8581 states and 12443 transitions. [2020-12-23 10:43:28,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:43:28,102 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2020-12-23 10:43:28,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:43:28,138 INFO L225 Difference]: With dead ends: 8581 [2020-12-23 10:43:28,139 INFO L226 Difference]: Without dead ends: 5763 [2020-12-23 10:43:28,144 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 10:43:28,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5763 states. [2020-12-23 10:43:28,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5763 to 5761. [2020-12-23 10:43:28,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5761 states. [2020-12-23 10:43:28,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5761 states to 5761 states and 8245 transitions. [2020-12-23 10:43:28,690 INFO L78 Accepts]: Start accepts. Automaton has 5761 states and 8245 transitions. Word has length 63 [2020-12-23 10:43:28,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:43:28,690 INFO L481 AbstractCegarLoop]: Abstraction has 5761 states and 8245 transitions. [2020-12-23 10:43:28,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:43:28,691 INFO L276 IsEmpty]: Start isEmpty. Operand 5761 states and 8245 transitions. [2020-12-23 10:43:28,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-23 10:43:28,694 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:43:28,694 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:43:28,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 10:43:28,695 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:43:28,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:43:28,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1700716252, now seen corresponding path program 1 times [2020-12-23 10:43:28,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:43:28,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754514711] [2020-12-23 10:43:28,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:43:28,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:43:28,959 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:43:28,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754514711] [2020-12-23 10:43:28,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960749824] [2020-12-23 10:43:28,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 10:43:29,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:43:29,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-23 10:43:29,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 10:43:29,279 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 10:43:29,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 10:43:29,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4] total 12 [2020-12-23 10:43:29,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179431899] [2020-12-23 10:43:29,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 10:43:29,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:43:29,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 10:43:29,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-12-23 10:43:29,284 INFO L87 Difference]: Start difference. First operand 5761 states and 8245 transitions. Second operand 12 states. [2020-12-23 10:43:37,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:43:37,768 INFO L93 Difference]: Finished difference Result 41531 states and 58325 transitions. [2020-12-23 10:43:37,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2020-12-23 10:43:37,768 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 63 [2020-12-23 10:43:37,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:43:37,863 INFO L225 Difference]: With dead ends: 41531 [2020-12-23 10:43:37,863 INFO L226 Difference]: Without dead ends: 36305 [2020-12-23 10:43:37,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2815 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1361, Invalid=5949, Unknown=0, NotChecked=0, Total=7310 [2020-12-23 10:43:37,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36305 states. [2020-12-23 10:43:40,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36305 to 15555. [2020-12-23 10:43:40,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15555 states. [2020-12-23 10:43:40,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15555 states to 15555 states and 21830 transitions. [2020-12-23 10:43:40,095 INFO L78 Accepts]: Start accepts. Automaton has 15555 states and 21830 transitions. Word has length 63 [2020-12-23 10:43:40,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:43:40,095 INFO L481 AbstractCegarLoop]: Abstraction has 15555 states and 21830 transitions. [2020-12-23 10:43:40,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 10:43:40,096 INFO L276 IsEmpty]: Start isEmpty. Operand 15555 states and 21830 transitions. [2020-12-23 10:43:40,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-23 10:43:40,108 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:43:40,108 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:43:40,314 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-23 10:43:40,315 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:43:40,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:43:40,316 INFO L82 PathProgramCache]: Analyzing trace with hash -1091273178, now seen corresponding path program 1 times [2020-12-23 10:43:40,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:43:40,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343033259] [2020-12-23 10:43:40,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:43:40,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:43:40,424 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-23 10:43:40,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343033259] [2020-12-23 10:43:40,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:43:40,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 10:43:40,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713715476] [2020-12-23 10:43:40,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 10:43:40,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:43:40,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 10:43:40,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 10:43:40,427 INFO L87 Difference]: Start difference. First operand 15555 states and 21830 transitions. Second operand 5 states. [2020-12-23 10:43:42,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:43:42,193 INFO L93 Difference]: Finished difference Result 28097 states and 39753 transitions. [2020-12-23 10:43:42,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 10:43:42,194 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-12-23 10:43:42,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:43:42,238 INFO L225 Difference]: With dead ends: 28097 [2020-12-23 10:43:42,238 INFO L226 Difference]: Without dead ends: 21354 [2020-12-23 10:43:42,256 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 10:43:42,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21354 states. [2020-12-23 10:43:43,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21354 to 20054. [2020-12-23 10:43:43,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20054 states. [2020-12-23 10:43:44,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20054 states to 20054 states and 28043 transitions. [2020-12-23 10:43:44,011 INFO L78 Accepts]: Start accepts. Automaton has 20054 states and 28043 transitions. Word has length 63 [2020-12-23 10:43:44,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:43:44,012 INFO L481 AbstractCegarLoop]: Abstraction has 20054 states and 28043 transitions. [2020-12-23 10:43:44,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 10:43:44,012 INFO L276 IsEmpty]: Start isEmpty. Operand 20054 states and 28043 transitions. [2020-12-23 10:43:44,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-23 10:43:44,016 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:43:44,016 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:43:44,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 10:43:44,016 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:43:44,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:43:44,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1327011341, now seen corresponding path program 1 times [2020-12-23 10:43:44,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:43:44,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524970900] [2020-12-23 10:43:44,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:43:44,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:43:44,061 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:43:44,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524970900] [2020-12-23 10:43:44,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:43:44,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:43:44,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839044694] [2020-12-23 10:43:44,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:43:44,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:43:44,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:43:44,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:43:44,064 INFO L87 Difference]: Start difference. First operand 20054 states and 28043 transitions. Second operand 3 states. [2020-12-23 10:43:46,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:43:46,310 INFO L93 Difference]: Finished difference Result 35081 states and 48957 transitions. [2020-12-23 10:43:46,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:43:46,311 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2020-12-23 10:43:46,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:43:46,345 INFO L225 Difference]: With dead ends: 35081 [2020-12-23 10:43:46,345 INFO L226 Difference]: Without dead ends: 21038 [2020-12-23 10:43:46,364 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 10:43:46,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21038 states. [2020-12-23 10:43:48,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21038 to 20161. [2020-12-23 10:43:48,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20161 states. [2020-12-23 10:43:48,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20161 states to 20161 states and 27701 transitions. [2020-12-23 10:43:48,106 INFO L78 Accepts]: Start accepts. Automaton has 20161 states and 27701 transitions. Word has length 63 [2020-12-23 10:43:48,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:43:48,106 INFO L481 AbstractCegarLoop]: Abstraction has 20161 states and 27701 transitions. [2020-12-23 10:43:48,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:43:48,106 INFO L276 IsEmpty]: Start isEmpty. Operand 20161 states and 27701 transitions. [2020-12-23 10:43:48,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-23 10:43:48,110 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:43:48,110 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:43:48,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-23 10:43:48,110 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:43:48,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:43:48,111 INFO L82 PathProgramCache]: Analyzing trace with hash 161019487, now seen corresponding path program 1 times [2020-12-23 10:43:48,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:43:48,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898010444] [2020-12-23 10:43:48,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:43:48,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:43:48,203 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-23 10:43:48,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898010444] [2020-12-23 10:43:48,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:43:48,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 10:43:48,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095776363] [2020-12-23 10:43:48,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 10:43:48,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:43:48,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 10:43:48,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-23 10:43:48,212 INFO L87 Difference]: Start difference. First operand 20161 states and 27701 transitions. Second operand 6 states. [2020-12-23 10:43:52,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:43:52,865 INFO L93 Difference]: Finished difference Result 69070 states and 94356 transitions. [2020-12-23 10:43:52,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 10:43:52,866 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 63 [2020-12-23 10:43:52,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:43:52,955 INFO L225 Difference]: With dead ends: 69070 [2020-12-23 10:43:52,955 INFO L226 Difference]: Without dead ends: 48996 [2020-12-23 10:43:52,988 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-23 10:43:53,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48996 states. [2020-12-23 10:43:57,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48996 to 48596. [2020-12-23 10:43:57,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48596 states. [2020-12-23 10:43:57,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48596 states to 48596 states and 66040 transitions. [2020-12-23 10:43:57,308 INFO L78 Accepts]: Start accepts. Automaton has 48596 states and 66040 transitions. Word has length 63 [2020-12-23 10:43:57,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:43:57,308 INFO L481 AbstractCegarLoop]: Abstraction has 48596 states and 66040 transitions. [2020-12-23 10:43:57,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 10:43:57,309 INFO L276 IsEmpty]: Start isEmpty. Operand 48596 states and 66040 transitions. [2020-12-23 10:43:57,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-23 10:43:57,314 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:43:57,314 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:43:57,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-23 10:43:57,315 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:43:57,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:43:57,315 INFO L82 PathProgramCache]: Analyzing trace with hash -1235936444, now seen corresponding path program 1 times [2020-12-23 10:43:57,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:43:57,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836713900] [2020-12-23 10:43:57,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:43:57,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:43:57,495 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2020-12-23 10:43:57,510 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-23 10:43:57,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836713900] [2020-12-23 10:43:57,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:43:57,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 10:43:57,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892505312] [2020-12-23 10:43:57,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 10:43:57,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:43:57,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 10:43:57,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 10:43:57,514 INFO L87 Difference]: Start difference. First operand 48596 states and 66040 transitions. Second operand 5 states. [2020-12-23 10:44:02,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:44:02,504 INFO L93 Difference]: Finished difference Result 68228 states and 93709 transitions. [2020-12-23 10:44:02,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 10:44:02,505 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-12-23 10:44:02,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:44:02,592 INFO L225 Difference]: With dead ends: 68228 [2020-12-23 10:44:02,592 INFO L226 Difference]: Without dead ends: 61215 [2020-12-23 10:44:02,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 10:44:02,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61215 states. [2020-12-23 10:44:07,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61215 to 55399. [2020-12-23 10:44:07,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55399 states. [2020-12-23 10:44:07,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55399 states to 55399 states and 75461 transitions. [2020-12-23 10:44:07,458 INFO L78 Accepts]: Start accepts. Automaton has 55399 states and 75461 transitions. Word has length 63 [2020-12-23 10:44:07,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:44:07,458 INFO L481 AbstractCegarLoop]: Abstraction has 55399 states and 75461 transitions. [2020-12-23 10:44:07,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 10:44:07,458 INFO L276 IsEmpty]: Start isEmpty. Operand 55399 states and 75461 transitions. [2020-12-23 10:44:07,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-23 10:44:07,464 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:44:07,464 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:44:07,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-23 10:44:07,464 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:44:07,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:44:07,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1004794437, now seen corresponding path program 1 times [2020-12-23 10:44:07,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:44:07,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508094054] [2020-12-23 10:44:07,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:44:07,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:44:07,504 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:44:07,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508094054] [2020-12-23 10:44:07,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:44:07,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:44:07,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555713823] [2020-12-23 10:44:07,505 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:44:07,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:44:07,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:44:07,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:44:07,506 INFO L87 Difference]: Start difference. First operand 55399 states and 75461 transitions. Second operand 3 states. [2020-12-23 10:44:11,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:44:11,857 INFO L93 Difference]: Finished difference Result 77867 states and 105572 transitions. [2020-12-23 10:44:11,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:44:11,857 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2020-12-23 10:44:11,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:44:11,909 INFO L225 Difference]: With dead ends: 77867 [2020-12-23 10:44:11,910 INFO L226 Difference]: Without dead ends: 49438 [2020-12-23 10:44:11,928 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:44:11,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49438 states. [2020-12-23 10:44:16,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49438 to 44099. [2020-12-23 10:44:16,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44099 states. [2020-12-23 10:44:16,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44099 states to 44099 states and 59293 transitions. [2020-12-23 10:44:16,387 INFO L78 Accepts]: Start accepts. Automaton has 44099 states and 59293 transitions. Word has length 64 [2020-12-23 10:44:16,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:44:16,387 INFO L481 AbstractCegarLoop]: Abstraction has 44099 states and 59293 transitions. [2020-12-23 10:44:16,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:44:16,388 INFO L276 IsEmpty]: Start isEmpty. Operand 44099 states and 59293 transitions. [2020-12-23 10:44:16,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-23 10:44:16,393 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:44:16,393 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:44:16,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-23 10:44:16,394 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:44:16,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:44:16,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1607670003, now seen corresponding path program 1 times [2020-12-23 10:44:16,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:44:16,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509132038] [2020-12-23 10:44:16,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:44:16,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:44:16,457 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 10:44:16,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509132038] [2020-12-23 10:44:16,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:44:16,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 10:44:16,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289656810] [2020-12-23 10:44:16,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 10:44:16,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:44:16,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 10:44:16,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 10:44:16,459 INFO L87 Difference]: Start difference. First operand 44099 states and 59293 transitions. Second operand 5 states. [2020-12-23 10:44:20,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:44:20,978 INFO L93 Difference]: Finished difference Result 57440 states and 77739 transitions. [2020-12-23 10:44:20,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 10:44:20,978 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-12-23 10:44:20,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:44:21,028 INFO L225 Difference]: With dead ends: 57440 [2020-12-23 10:44:21,028 INFO L226 Difference]: Without dead ends: 50725 [2020-12-23 10:44:21,040 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 10:44:21,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50725 states. [2020-12-23 10:44:25,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50725 to 48655. [2020-12-23 10:44:25,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48655 states. [2020-12-23 10:44:25,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48655 states to 48655 states and 65328 transitions. [2020-12-23 10:44:25,415 INFO L78 Accepts]: Start accepts. Automaton has 48655 states and 65328 transitions. Word has length 65 [2020-12-23 10:44:25,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:44:25,415 INFO L481 AbstractCegarLoop]: Abstraction has 48655 states and 65328 transitions. [2020-12-23 10:44:25,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 10:44:25,415 INFO L276 IsEmpty]: Start isEmpty. Operand 48655 states and 65328 transitions. [2020-12-23 10:44:25,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-23 10:44:25,421 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:44:25,422 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:44:25,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-23 10:44:25,422 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:44:25,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:44:25,423 INFO L82 PathProgramCache]: Analyzing trace with hash 254858913, now seen corresponding path program 1 times [2020-12-23 10:44:25,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:44:25,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237465233] [2020-12-23 10:44:25,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:44:25,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:44:25,460 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:44:25,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237465233] [2020-12-23 10:44:25,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:44:25,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:44:25,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503901712] [2020-12-23 10:44:25,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:44:25,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:44:25,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:44:25,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:44:25,462 INFO L87 Difference]: Start difference. First operand 48655 states and 65328 transitions. Second operand 3 states. [2020-12-23 10:44:31,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:44:31,715 INFO L93 Difference]: Finished difference Result 103924 states and 139378 transitions. [2020-12-23 10:44:31,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:44:31,715 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2020-12-23 10:44:31,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:44:31,787 INFO L225 Difference]: With dead ends: 103924 [2020-12-23 10:44:31,787 INFO L226 Difference]: Without dead ends: 67747 [2020-12-23 10:44:31,819 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 10:44:31,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67747 states. [2020-12-23 10:44:37,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67747 to 67745. [2020-12-23 10:44:37,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67745 states. [2020-12-23 10:44:38,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67745 states to 67745 states and 89604 transitions. [2020-12-23 10:44:38,034 INFO L78 Accepts]: Start accepts. Automaton has 67745 states and 89604 transitions. Word has length 66 [2020-12-23 10:44:38,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:44:38,034 INFO L481 AbstractCegarLoop]: Abstraction has 67745 states and 89604 transitions. [2020-12-23 10:44:38,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:44:38,034 INFO L276 IsEmpty]: Start isEmpty. Operand 67745 states and 89604 transitions. [2020-12-23 10:44:38,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-23 10:44:38,041 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:44:38,041 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:44:38,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-23 10:44:38,042 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:44:38,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:44:38,042 INFO L82 PathProgramCache]: Analyzing trace with hash -2033011702, now seen corresponding path program 1 times [2020-12-23 10:44:38,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:44:38,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397098322] [2020-12-23 10:44:38,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:44:38,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:44:38,114 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-23 10:44:38,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397098322] [2020-12-23 10:44:38,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:44:38,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 10:44:38,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909626564] [2020-12-23 10:44:38,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 10:44:38,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:44:38,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 10:44:38,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-23 10:44:38,117 INFO L87 Difference]: Start difference. First operand 67745 states and 89604 transitions. Second operand 6 states. [2020-12-23 10:44:54,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:44:54,188 INFO L93 Difference]: Finished difference Result 227346 states and 299070 transitions. [2020-12-23 10:44:54,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 10:44:54,188 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-12-23 10:44:54,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:44:54,522 INFO L225 Difference]: With dead ends: 227346 [2020-12-23 10:44:54,522 INFO L226 Difference]: Without dead ends: 159658 [2020-12-23 10:44:54,606 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-23 10:44:54,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159658 states. [2020-12-23 10:45:10,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159658 to 158389. [2020-12-23 10:45:10,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158389 states. [2020-12-23 10:45:10,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158389 states to 158389 states and 207061 transitions. [2020-12-23 10:45:10,985 INFO L78 Accepts]: Start accepts. Automaton has 158389 states and 207061 transitions. Word has length 68 [2020-12-23 10:45:10,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:45:10,986 INFO L481 AbstractCegarLoop]: Abstraction has 158389 states and 207061 transitions. [2020-12-23 10:45:10,986 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 10:45:10,986 INFO L276 IsEmpty]: Start isEmpty. Operand 158389 states and 207061 transitions. [2020-12-23 10:45:10,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-23 10:45:10,993 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:45:10,993 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:45:10,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-23 10:45:10,993 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:45:10,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:45:10,994 INFO L82 PathProgramCache]: Analyzing trace with hash -767181137, now seen corresponding path program 1 times [2020-12-23 10:45:10,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:45:10,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570071802] [2020-12-23 10:45:10,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:45:11,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:45:11,081 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:45:11,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570071802] [2020-12-23 10:45:11,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916212226] [2020-12-23 10:45:11,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 10:45:11,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:45:11,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-23 10:45:11,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 10:45:11,491 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:45:11,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 10:45:11,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2020-12-23 10:45:11,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135484836] [2020-12-23 10:45:11,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 10:45:11,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:45:11,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 10:45:11,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-12-23 10:45:11,493 INFO L87 Difference]: Start difference. First operand 158389 states and 207061 transitions. Second operand 11 states. [2020-12-23 10:45:44,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:45:44,826 INFO L93 Difference]: Finished difference Result 404014 states and 527073 transitions. [2020-12-23 10:45:44,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 10:45:44,826 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 68 [2020-12-23 10:45:44,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:45:45,315 INFO L225 Difference]: With dead ends: 404014 [2020-12-23 10:45:45,316 INFO L226 Difference]: Without dead ends: 287823 [2020-12-23 10:45:45,475 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2020-12-23 10:45:45,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287823 states.