/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.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 20:33:41,855 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 20:33:41,860 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 20:33:41,916 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 20:33:41,917 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 20:33:41,921 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 20:33:41,924 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 20:33:41,930 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 20:33:41,933 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 20:33:41,939 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 20:33:41,943 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 20:33:41,945 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 20:33:41,945 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 20:33:41,948 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 20:33:41,953 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 20:33:41,954 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 20:33:41,955 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 20:33:41,971 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 20:33:41,978 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 20:33:41,987 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 20:33:41,989 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 20:33:41,992 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 20:33:41,993 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 20:33:41,996 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 20:33:42,004 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 20:33:42,022 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 20:33:42,023 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 20:33:42,024 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 20:33:42,030 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 20:33:42,079 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 20:33:42,079 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 20:33:42,084 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 20:33:42,085 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 20:33:42,085 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 20:33:42,085 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 20:33:42,085 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 20:33:42,086 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 20:33:42,086 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 20:33:42,086 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 20:33:42,086 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 20:33:42,086 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 20:33:42,087 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 20:33:42,087 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 20:33:42,088 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 20:33:42,088 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 20:33:42,089 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 20:33:42,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 20:33:42,089 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 20:33:42,089 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 20:33:42,089 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 20:33:42,090 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 20:33:42,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 20:33:42,090 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 20:33:42,090 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 20:33:42,090 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 20:33:42,507 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 20:33:42,534 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 20:33:42,537 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 20:33:42,539 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 20:33:42,540 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 20:33:42,541 INFO L432 ainManager$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.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2021-01-06 20:33:42,622 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/5a0c1a31f/63acceb477a9401cb20040d399aeb590/FLAGac91de3a4 [2021-01-06 20:33:43,340 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 20:33:43,341 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2021-01-06 20:33:43,351 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/5a0c1a31f/63acceb477a9401cb20040d399aeb590/FLAGac91de3a4 [2021-01-06 20:33:43,684 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/5a0c1a31f/63acceb477a9401cb20040d399aeb590 [2021-01-06 20:33:43,687 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 20:33:43,691 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 20:33:43,696 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 20:33:43,696 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 20:33:43,700 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 20:33:43,701 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 08:33:43" (1/1) ... [2021-01-06 20:33:43,704 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39fb7875 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:33:43, skipping insertion in model container [2021-01-06 20:33:43,704 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 08:33:43" (1/1) ... [2021-01-06 20:33:43,713 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 20:33:43,776 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_5979~0,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_6075~0,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,] [2021-01-06 20:33:43,981 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.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[4007,4020] 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,] [2021-01-06 20:33:44,007 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 20:33:44,021 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_5979~0,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_6075~0,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,] [2021-01-06 20:33:44,061 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.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[4007,4020] 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,] [2021-01-06 20:33:44,080 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 20:33:44,108 INFO L208 MainTranslator]: Completed translation [2021-01-06 20:33:44,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:33:44 WrapperNode [2021-01-06 20:33:44,109 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 20:33:44,111 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 20:33:44,111 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 20:33:44,111 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 20:33:44,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:33:44" (1/1) ... [2021-01-06 20:33:44,131 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:33:44" (1/1) ... [2021-01-06 20:33:44,187 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 20:33:44,188 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 20:33:44,188 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 20:33:44,190 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 20:33:44,202 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:33:44" (1/1) ... [2021-01-06 20:33:44,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:33:44" (1/1) ... [2021-01-06 20:33:44,219 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:33:44" (1/1) ... [2021-01-06 20:33:44,220 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:33:44" (1/1) ... [2021-01-06 20:33:44,231 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:33:44" (1/1) ... [2021-01-06 20:33:44,242 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:33:44" (1/1) ... [2021-01-06 20:33:44,245 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:33:44" (1/1) ... [2021-01-06 20:33:44,250 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 20:33:44,251 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 20:33:44,251 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 20:33:44,251 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 20:33:44,252 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:33:44" (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 [2021-01-06 20:33:44,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 20:33:44,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 20:33:44,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 20:33:44,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 20:33:45,234 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 20:33:45,234 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-01-06 20:33:45,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 08:33:45 BoogieIcfgContainer [2021-01-06 20:33:45,236 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 20:33:45,238 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 20:33:45,238 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 20:33:45,242 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 20:33:45,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 08:33:43" (1/3) ... [2021-01-06 20:33:45,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bd3282c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 08:33:45, skipping insertion in model container [2021-01-06 20:33:45,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:33:44" (2/3) ... [2021-01-06 20:33:45,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bd3282c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 08:33:45, skipping insertion in model container [2021-01-06 20:33:45,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 08:33:45" (3/3) ... [2021-01-06 20:33:45,246 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2021-01-06 20:33:45,252 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 20:33:45,258 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 20:33:45,282 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 20:33:45,307 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 20:33:45,307 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 20:33:45,307 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 20:33:45,308 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 20:33:45,308 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 20:33:45,308 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 20:33:45,308 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 20:33:45,308 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 20:33:45,323 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states. [2021-01-06 20:33:45,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-01-06 20:33:45,331 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:33:45,331 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] [2021-01-06 20:33:45,332 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:33:45,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:33:45,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1356231251, now seen corresponding path program 1 times [2021-01-06 20:33:45,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:33:45,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934490566] [2021-01-06 20:33:45,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:33:45,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:33:45,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:33:45,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934490566] [2021-01-06 20:33:45,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:33:45,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:33:45,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634385715] [2021-01-06 20:33:45,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:33:45,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:33:45,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:33:45,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:33:45,713 INFO L87 Difference]: Start difference. First operand 82 states. Second operand 3 states. [2021-01-06 20:33:45,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:33:45,837 INFO L93 Difference]: Finished difference Result 190 states and 300 transitions. [2021-01-06 20:33:45,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:33:45,840 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2021-01-06 20:33:45,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:33:45,868 INFO L225 Difference]: With dead ends: 190 [2021-01-06 20:33:45,868 INFO L226 Difference]: Without dead ends: 122 [2021-01-06 20:33:45,876 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 [2021-01-06 20:33:45,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-01-06 20:33:45,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 120. [2021-01-06 20:33:45,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2021-01-06 20:33:45,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 178 transitions. [2021-01-06 20:33:45,970 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 178 transitions. Word has length 37 [2021-01-06 20:33:45,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:33:45,971 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 178 transitions. [2021-01-06 20:33:45,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:33:45,972 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 178 transitions. [2021-01-06 20:33:45,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-01-06 20:33:45,975 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:33:45,976 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] [2021-01-06 20:33:45,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 20:33:45,977 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:33:45,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:33:45,981 INFO L82 PathProgramCache]: Analyzing trace with hash -775084619, now seen corresponding path program 1 times [2021-01-06 20:33:45,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:33:45,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056691334] [2021-01-06 20:33:45,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:33:46,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:33:46,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:33:46,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056691334] [2021-01-06 20:33:46,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:33:46,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:33:46,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784071355] [2021-01-06 20:33:46,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:33:46,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:33:46,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:33:46,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:33:46,135 INFO L87 Difference]: Start difference. First operand 120 states and 178 transitions. Second operand 3 states. [2021-01-06 20:33:46,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:33:46,186 INFO L93 Difference]: Finished difference Result 288 states and 442 transitions. [2021-01-06 20:33:46,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:33:46,187 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2021-01-06 20:33:46,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:33:46,190 INFO L225 Difference]: With dead ends: 288 [2021-01-06 20:33:46,190 INFO L226 Difference]: Without dead ends: 188 [2021-01-06 20:33:46,192 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 [2021-01-06 20:33:46,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-01-06 20:33:46,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 186. [2021-01-06 20:33:46,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2021-01-06 20:33:46,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 281 transitions. [2021-01-06 20:33:46,254 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 281 transitions. Word has length 38 [2021-01-06 20:33:46,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:33:46,254 INFO L481 AbstractCegarLoop]: Abstraction has 186 states and 281 transitions. [2021-01-06 20:33:46,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:33:46,255 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 281 transitions. [2021-01-06 20:33:46,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-01-06 20:33:46,260 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:33:46,261 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] [2021-01-06 20:33:46,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 20:33:46,261 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:33:46,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:33:46,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1501816372, now seen corresponding path program 1 times [2021-01-06 20:33:46,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:33:46,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174486438] [2021-01-06 20:33:46,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:33:46,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:33:46,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:33:46,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174486438] [2021-01-06 20:33:46,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:33:46,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 20:33:46,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919420405] [2021-01-06 20:33:46,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 20:33:46,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:33:46,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 20:33:46,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-01-06 20:33:46,534 INFO L87 Difference]: Start difference. First operand 186 states and 281 transitions. Second operand 5 states. [2021-01-06 20:33:46,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:33:46,679 INFO L93 Difference]: Finished difference Result 628 states and 972 transitions. [2021-01-06 20:33:46,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 20:33:46,680 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2021-01-06 20:33:46,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:33:46,685 INFO L225 Difference]: With dead ends: 628 [2021-01-06 20:33:46,685 INFO L226 Difference]: Without dead ends: 462 [2021-01-06 20:33:46,687 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 [2021-01-06 20:33:46,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2021-01-06 20:33:46,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 458. [2021-01-06 20:33:46,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 458 states. [2021-01-06 20:33:46,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 705 transitions. [2021-01-06 20:33:46,747 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 705 transitions. Word has length 39 [2021-01-06 20:33:46,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:33:46,748 INFO L481 AbstractCegarLoop]: Abstraction has 458 states and 705 transitions. [2021-01-06 20:33:46,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 20:33:46,748 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 705 transitions. [2021-01-06 20:33:46,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-01-06 20:33:46,750 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:33:46,750 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] [2021-01-06 20:33:46,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 20:33:46,751 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:33:46,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:33:46,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1560757853, now seen corresponding path program 1 times [2021-01-06 20:33:46,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:33:46,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544328415] [2021-01-06 20:33:46,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:33:46,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:33:46,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:33:46,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544328415] [2021-01-06 20:33:46,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:33:46,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 20:33:46,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656887625] [2021-01-06 20:33:46,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 20:33:46,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:33:46,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 20:33:46,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-01-06 20:33:46,857 INFO L87 Difference]: Start difference. First operand 458 states and 705 transitions. Second operand 6 states. [2021-01-06 20:33:47,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:33:47,156 INFO L93 Difference]: Finished difference Result 1744 states and 2712 transitions. [2021-01-06 20:33:47,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 20:33:47,156 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 41 [2021-01-06 20:33:47,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:33:47,165 INFO L225 Difference]: With dead ends: 1744 [2021-01-06 20:33:47,165 INFO L226 Difference]: Without dead ends: 1306 [2021-01-06 20:33:47,168 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 [2021-01-06 20:33:47,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1306 states. [2021-01-06 20:33:47,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1306 to 1302. [2021-01-06 20:33:47,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1302 states. [2021-01-06 20:33:47,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1302 states to 1302 states and 2017 transitions. [2021-01-06 20:33:47,338 INFO L78 Accepts]: Start accepts. Automaton has 1302 states and 2017 transitions. Word has length 41 [2021-01-06 20:33:47,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:33:47,339 INFO L481 AbstractCegarLoop]: Abstraction has 1302 states and 2017 transitions. [2021-01-06 20:33:47,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 20:33:47,339 INFO L276 IsEmpty]: Start isEmpty. Operand 1302 states and 2017 transitions. [2021-01-06 20:33:47,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-01-06 20:33:47,341 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:33:47,341 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] [2021-01-06 20:33:47,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 20:33:47,342 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:33:47,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:33:47,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1890309442, now seen corresponding path program 1 times [2021-01-06 20:33:47,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:33:47,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467895391] [2021-01-06 20:33:47,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:33:47,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:33:47,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:33:47,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467895391] [2021-01-06 20:33:47,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:33:47,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 20:33:47,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960724923] [2021-01-06 20:33:47,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 20:33:47,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:33:47,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 20:33:47,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 20:33:47,448 INFO L87 Difference]: Start difference. First operand 1302 states and 2017 transitions. Second operand 5 states. [2021-01-06 20:33:47,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:33:47,897 INFO L93 Difference]: Finished difference Result 5188 states and 8059 transitions. [2021-01-06 20:33:47,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 20:33:47,900 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2021-01-06 20:33:47,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:33:47,924 INFO L225 Difference]: With dead ends: 5188 [2021-01-06 20:33:47,924 INFO L226 Difference]: Without dead ends: 3906 [2021-01-06 20:33:47,927 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 [2021-01-06 20:33:47,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3906 states. [2021-01-06 20:33:48,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3906 to 2582. [2021-01-06 20:33:48,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2582 states. [2021-01-06 20:33:48,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2582 states to 2582 states and 3941 transitions. [2021-01-06 20:33:48,231 INFO L78 Accepts]: Start accepts. Automaton has 2582 states and 3941 transitions. Word has length 41 [2021-01-06 20:33:48,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:33:48,231 INFO L481 AbstractCegarLoop]: Abstraction has 2582 states and 3941 transitions. [2021-01-06 20:33:48,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 20:33:48,232 INFO L276 IsEmpty]: Start isEmpty. Operand 2582 states and 3941 transitions. [2021-01-06 20:33:48,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-01-06 20:33:48,240 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:33:48,240 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] [2021-01-06 20:33:48,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-06 20:33:48,241 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:33:48,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:33:48,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1549405756, now seen corresponding path program 1 times [2021-01-06 20:33:48,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:33:48,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211275031] [2021-01-06 20:33:48,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:33:48,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:33:48,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:33:48,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211275031] [2021-01-06 20:33:48,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:33:48,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 20:33:48,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167708147] [2021-01-06 20:33:48,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 20:33:48,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:33:48,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 20:33:48,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 20:33:48,385 INFO L87 Difference]: Start difference. First operand 2582 states and 3941 transitions. Second operand 5 states. [2021-01-06 20:33:48,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:33:48,937 INFO L93 Difference]: Finished difference Result 5288 states and 8006 transitions. [2021-01-06 20:33:48,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 20:33:48,938 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2021-01-06 20:33:48,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:33:48,965 INFO L225 Difference]: With dead ends: 5288 [2021-01-06 20:33:48,966 INFO L226 Difference]: Without dead ends: 5286 [2021-01-06 20:33:48,968 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 [2021-01-06 20:33:48,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5286 states. [2021-01-06 20:33:49,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5286 to 2726. [2021-01-06 20:33:49,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2726 states. [2021-01-06 20:33:49,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2726 states to 2726 states and 4085 transitions. [2021-01-06 20:33:49,332 INFO L78 Accepts]: Start accepts. Automaton has 2726 states and 4085 transitions. Word has length 42 [2021-01-06 20:33:49,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:33:49,333 INFO L481 AbstractCegarLoop]: Abstraction has 2726 states and 4085 transitions. [2021-01-06 20:33:49,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 20:33:49,333 INFO L276 IsEmpty]: Start isEmpty. Operand 2726 states and 4085 transitions. [2021-01-06 20:33:49,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-01-06 20:33:49,334 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:33:49,335 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] [2021-01-06 20:33:49,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-06 20:33:49,335 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:33:49,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:33:49,336 INFO L82 PathProgramCache]: Analyzing trace with hash -776365166, now seen corresponding path program 1 times [2021-01-06 20:33:49,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:33:49,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503295359] [2021-01-06 20:33:49,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:33:49,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:33:49,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:33:49,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503295359] [2021-01-06 20:33:49,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:33:49,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:33:49,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164604671] [2021-01-06 20:33:49,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:33:49,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:33:49,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:33:49,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:33:49,393 INFO L87 Difference]: Start difference. First operand 2726 states and 4085 transitions. Second operand 3 states. [2021-01-06 20:33:49,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:33:49,842 INFO L93 Difference]: Finished difference Result 7272 states and 10817 transitions. [2021-01-06 20:33:49,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:33:49,842 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2021-01-06 20:33:49,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:33:49,865 INFO L225 Difference]: With dead ends: 7272 [2021-01-06 20:33:49,865 INFO L226 Difference]: Without dead ends: 4566 [2021-01-06 20:33:49,870 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 [2021-01-06 20:33:49,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4566 states. [2021-01-06 20:33:50,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4566 to 4504. [2021-01-06 20:33:50,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4504 states. [2021-01-06 20:33:50,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4504 states to 4504 states and 6571 transitions. [2021-01-06 20:33:50,328 INFO L78 Accepts]: Start accepts. Automaton has 4504 states and 6571 transitions. Word has length 43 [2021-01-06 20:33:50,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:33:50,329 INFO L481 AbstractCegarLoop]: Abstraction has 4504 states and 6571 transitions. [2021-01-06 20:33:50,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:33:50,329 INFO L276 IsEmpty]: Start isEmpty. Operand 4504 states and 6571 transitions. [2021-01-06 20:33:50,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-01-06 20:33:50,330 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:33:50,330 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] [2021-01-06 20:33:50,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-06 20:33:50,331 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:33:50,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:33:50,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1884301642, now seen corresponding path program 1 times [2021-01-06 20:33:50,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:33:50,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156160911] [2021-01-06 20:33:50,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:33:50,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:33:50,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:33:50,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156160911] [2021-01-06 20:33:50,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:33:50,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:33:50,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313983444] [2021-01-06 20:33:50,372 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:33:50,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:33:50,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:33:50,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:33:50,373 INFO L87 Difference]: Start difference. First operand 4504 states and 6571 transitions. Second operand 3 states. [2021-01-06 20:33:50,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:33:50,976 INFO L93 Difference]: Finished difference Result 8983 states and 13193 transitions. [2021-01-06 20:33:50,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:33:50,977 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2021-01-06 20:33:50,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:33:51,009 INFO L225 Difference]: With dead ends: 8983 [2021-01-06 20:33:51,009 INFO L226 Difference]: Without dead ends: 6276 [2021-01-06 20:33:51,016 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 [2021-01-06 20:33:51,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6276 states. [2021-01-06 20:33:51,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6276 to 6274. [2021-01-06 20:33:51,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6274 states. [2021-01-06 20:33:51,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6274 states to 6274 states and 9053 transitions. [2021-01-06 20:33:51,636 INFO L78 Accepts]: Start accepts. Automaton has 6274 states and 9053 transitions. Word has length 43 [2021-01-06 20:33:51,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:33:51,637 INFO L481 AbstractCegarLoop]: Abstraction has 6274 states and 9053 transitions. [2021-01-06 20:33:51,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:33:51,637 INFO L276 IsEmpty]: Start isEmpty. Operand 6274 states and 9053 transitions. [2021-01-06 20:33:51,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-01-06 20:33:51,641 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:33:51,642 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-01-06 20:33:51,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-06 20:33:51,642 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:33:51,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:33:51,643 INFO L82 PathProgramCache]: Analyzing trace with hash -1507478329, now seen corresponding path program 1 times [2021-01-06 20:33:51,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:33:51,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461508110] [2021-01-06 20:33:51,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:33:51,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:33:51,716 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-01-06 20:33:51,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461508110] [2021-01-06 20:33:51,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:33:51,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 20:33:51,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404442922] [2021-01-06 20:33:51,717 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 20:33:51,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:33:51,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 20:33:51,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 20:33:51,719 INFO L87 Difference]: Start difference. First operand 6274 states and 9053 transitions. Second operand 5 states. [2021-01-06 20:33:52,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:33:52,515 INFO L93 Difference]: Finished difference Result 11208 states and 16319 transitions. [2021-01-06 20:33:52,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 20:33:52,515 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2021-01-06 20:33:52,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:33:52,553 INFO L225 Difference]: With dead ends: 11208 [2021-01-06 20:33:52,553 INFO L226 Difference]: Without dead ends: 8932 [2021-01-06 20:33:52,559 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 [2021-01-06 20:33:52,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8932 states. [2021-01-06 20:33:53,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8932 to 8138. [2021-01-06 20:33:53,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8138 states. [2021-01-06 20:33:53,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8138 states to 8138 states and 11733 transitions. [2021-01-06 20:33:53,454 INFO L78 Accepts]: Start accepts. Automaton has 8138 states and 11733 transitions. Word has length 61 [2021-01-06 20:33:53,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:33:53,454 INFO L481 AbstractCegarLoop]: Abstraction has 8138 states and 11733 transitions. [2021-01-06 20:33:53,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 20:33:53,454 INFO L276 IsEmpty]: Start isEmpty. Operand 8138 states and 11733 transitions. [2021-01-06 20:33:53,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-01-06 20:33:53,457 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:33:53,458 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-01-06 20:33:53,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-01-06 20:33:53,458 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:33:53,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:33:53,459 INFO L82 PathProgramCache]: Analyzing trace with hash 910806190, now seen corresponding path program 1 times [2021-01-06 20:33:53,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:33:53,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534401756] [2021-01-06 20:33:53,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:33:53,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:33:53,515 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:33:53,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534401756] [2021-01-06 20:33:53,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:33:53,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:33:53,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225277559] [2021-01-06 20:33:53,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:33:53,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:33:53,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:33:53,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:33:53,518 INFO L87 Difference]: Start difference. First operand 8138 states and 11733 transitions. Second operand 3 states. [2021-01-06 20:33:54,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:33:54,265 INFO L93 Difference]: Finished difference Result 12968 states and 18595 transitions. [2021-01-06 20:33:54,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:33:54,265 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2021-01-06 20:33:54,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:33:54,289 INFO L225 Difference]: With dead ends: 12968 [2021-01-06 20:33:54,290 INFO L226 Difference]: Without dead ends: 8494 [2021-01-06 20:33:54,299 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 [2021-01-06 20:33:54,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8494 states. [2021-01-06 20:33:54,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8494 to 7236. [2021-01-06 20:33:54,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7236 states. [2021-01-06 20:33:54,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7236 states to 7236 states and 10240 transitions. [2021-01-06 20:33:54,919 INFO L78 Accepts]: Start accepts. Automaton has 7236 states and 10240 transitions. Word has length 61 [2021-01-06 20:33:54,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:33:54,919 INFO L481 AbstractCegarLoop]: Abstraction has 7236 states and 10240 transitions. [2021-01-06 20:33:54,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:33:54,919 INFO L276 IsEmpty]: Start isEmpty. Operand 7236 states and 10240 transitions. [2021-01-06 20:33:54,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-01-06 20:33:54,922 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:33:54,922 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-01-06 20:33:54,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-01-06 20:33:54,923 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:33:54,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:33:54,923 INFO L82 PathProgramCache]: Analyzing trace with hash -632426569, now seen corresponding path program 1 times [2021-01-06 20:33:54,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:33:54,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005251235] [2021-01-06 20:33:54,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:33:54,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:33:54,996 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-06 20:33:54,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005251235] [2021-01-06 20:33:54,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:33:54,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 20:33:54,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948981169] [2021-01-06 20:33:54,997 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 20:33:54,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:33:54,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 20:33:54,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-01-06 20:33:54,999 INFO L87 Difference]: Start difference. First operand 7236 states and 10240 transitions. Second operand 6 states. [2021-01-06 20:33:56,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:33:56,584 INFO L93 Difference]: Finished difference Result 24944 states and 35190 transitions. [2021-01-06 20:33:56,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 20:33:56,585 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2021-01-06 20:33:56,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:33:56,629 INFO L225 Difference]: With dead ends: 24944 [2021-01-06 20:33:56,629 INFO L226 Difference]: Without dead ends: 17760 [2021-01-06 20:33:56,643 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 [2021-01-06 20:33:56,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17760 states. [2021-01-06 20:33:58,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17760 to 17564. [2021-01-06 20:33:58,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17564 states. [2021-01-06 20:33:58,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17564 states to 17564 states and 24684 transitions. [2021-01-06 20:33:58,340 INFO L78 Accepts]: Start accepts. Automaton has 17564 states and 24684 transitions. Word has length 61 [2021-01-06 20:33:58,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:33:58,341 INFO L481 AbstractCegarLoop]: Abstraction has 17564 states and 24684 transitions. [2021-01-06 20:33:58,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 20:33:58,341 INFO L276 IsEmpty]: Start isEmpty. Operand 17564 states and 24684 transitions. [2021-01-06 20:33:58,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-01-06 20:33:58,344 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:33:58,345 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-01-06 20:33:58,345 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-01-06 20:33:58,345 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:33:58,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:33:58,346 INFO L82 PathProgramCache]: Analyzing trace with hash 985078322, now seen corresponding path program 1 times [2021-01-06 20:33:58,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:33:58,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570018260] [2021-01-06 20:33:58,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:33:58,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:33:58,434 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-01-06 20:33:58,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570018260] [2021-01-06 20:33:58,435 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:33:58,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 20:33:58,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997106560] [2021-01-06 20:33:58,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 20:33:58,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:33:58,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 20:33:58,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-01-06 20:33:58,437 INFO L87 Difference]: Start difference. First operand 17564 states and 24684 transitions. Second operand 5 states. [2021-01-06 20:33:59,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:33:59,722 INFO L93 Difference]: Finished difference Result 25214 states and 35779 transitions. [2021-01-06 20:33:59,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 20:33:59,724 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2021-01-06 20:33:59,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:33:59,776 INFO L225 Difference]: With dead ends: 25214 [2021-01-06 20:33:59,776 INFO L226 Difference]: Without dead ends: 22878 [2021-01-06 20:33:59,788 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-01-06 20:33:59,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22878 states. [2021-01-06 20:34:01,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22878 to 19850. [2021-01-06 20:34:01,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19850 states. [2021-01-06 20:34:01,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19850 states to 19850 states and 27918 transitions. [2021-01-06 20:34:01,277 INFO L78 Accepts]: Start accepts. Automaton has 19850 states and 27918 transitions. Word has length 61 [2021-01-06 20:34:01,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:34:01,277 INFO L481 AbstractCegarLoop]: Abstraction has 19850 states and 27918 transitions. [2021-01-06 20:34:01,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 20:34:01,278 INFO L276 IsEmpty]: Start isEmpty. Operand 19850 states and 27918 transitions. [2021-01-06 20:34:01,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-01-06 20:34:01,282 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:34:01,282 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] [2021-01-06 20:34:01,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-01-06 20:34:01,282 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:34:01,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:34:01,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1466148538, now seen corresponding path program 1 times [2021-01-06 20:34:01,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:34:01,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532867787] [2021-01-06 20:34:01,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:34:01,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:34:01,565 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:34:01,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532867787] [2021-01-06 20:34:01,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154570041] [2021-01-06 20:34:01,566 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 [2021-01-06 20:34:01,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:34:01,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 4 conjunts are in the unsatisfiable core [2021-01-06 20:34:01,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 20:34:02,112 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-06 20:34:02,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 20:34:02,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4] total 12 [2021-01-06 20:34:02,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299019247] [2021-01-06 20:34:02,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-06 20:34:02,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:34:02,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-06 20:34:02,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-01-06 20:34:02,116 INFO L87 Difference]: Start difference. First operand 19850 states and 27918 transitions. Second operand 12 states. [2021-01-06 20:34:03,841 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 39 [2021-01-06 20:34:06,662 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 36 [2021-01-06 20:34:07,009 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 37 [2021-01-06 20:34:10,923 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 39 [2021-01-06 20:34:11,095 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 42 [2021-01-06 20:34:11,702 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 40 [2021-01-06 20:34:11,949 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 42 [2021-01-06 20:34:26,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:34:26,808 INFO L93 Difference]: Finished difference Result 161949 states and 225996 transitions. [2021-01-06 20:34:26,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2021-01-06 20:34:26,809 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 62 [2021-01-06 20:34:26,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:34:27,338 INFO L225 Difference]: With dead ends: 161949 [2021-01-06 20:34:27,339 INFO L226 Difference]: Without dead ends: 142944 [2021-01-06 20:34:27,445 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7060 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=2503, Invalid=13753, Unknown=0, NotChecked=0, Total=16256 [2021-01-06 20:34:27,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142944 states. [2021-01-06 20:34:34,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142944 to 55615. [2021-01-06 20:34:34,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55615 states. [2021-01-06 20:34:34,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55615 states to 55615 states and 76707 transitions. [2021-01-06 20:34:34,352 INFO L78 Accepts]: Start accepts. Automaton has 55615 states and 76707 transitions. Word has length 62 [2021-01-06 20:34:34,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:34:34,352 INFO L481 AbstractCegarLoop]: Abstraction has 55615 states and 76707 transitions. [2021-01-06 20:34:34,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-06 20:34:34,352 INFO L276 IsEmpty]: Start isEmpty. Operand 55615 states and 76707 transitions. [2021-01-06 20:34:34,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-01-06 20:34:34,356 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:34:34,356 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] [2021-01-06 20:34:34,570 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-01-06 20:34:34,571 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:34:34,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:34:34,572 INFO L82 PathProgramCache]: Analyzing trace with hash 885685064, now seen corresponding path program 1 times [2021-01-06 20:34:34,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:34:34,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254220379] [2021-01-06 20:34:34,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:34:34,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:34:34,641 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:34:34,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254220379] [2021-01-06 20:34:34,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:34:34,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:34:34,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226981502] [2021-01-06 20:34:34,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:34:34,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:34:34,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:34:34,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:34:34,644 INFO L87 Difference]: Start difference. First operand 55615 states and 76707 transitions. Second operand 3 states. [2021-01-06 20:34:43,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:34:43,414 INFO L93 Difference]: Finished difference Result 138231 states and 189747 transitions. [2021-01-06 20:34:43,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:34:43,415 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2021-01-06 20:34:43,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:34:43,571 INFO L225 Difference]: With dead ends: 138231 [2021-01-06 20:34:43,571 INFO L226 Difference]: Without dead ends: 94277 [2021-01-06 20:34:43,634 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 [2021-01-06 20:34:43,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94277 states. [2021-01-06 20:34:52,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94277 to 94226. [2021-01-06 20:34:52,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94226 states. [2021-01-06 20:34:52,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94226 states to 94226 states and 127682 transitions. [2021-01-06 20:34:52,657 INFO L78 Accepts]: Start accepts. Automaton has 94226 states and 127682 transitions. Word has length 63 [2021-01-06 20:34:52,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:34:52,658 INFO L481 AbstractCegarLoop]: Abstraction has 94226 states and 127682 transitions. [2021-01-06 20:34:52,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:34:52,658 INFO L276 IsEmpty]: Start isEmpty. Operand 94226 states and 127682 transitions. [2021-01-06 20:34:52,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-01-06 20:34:52,664 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:34:52,664 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] [2021-01-06 20:34:52,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-01-06 20:34:52,665 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:34:52,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:34:52,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1327129075, now seen corresponding path program 1 times [2021-01-06 20:34:52,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:34:52,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342693446] [2021-01-06 20:34:52,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:34:52,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:34:52,962 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-01-06 20:34:52,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342693446] [2021-01-06 20:34:52,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:34:52,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 20:34:52,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845999125] [2021-01-06 20:34:52,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 20:34:52,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:34:52,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 20:34:52,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 20:34:52,966 INFO L87 Difference]: Start difference. First operand 94226 states and 127682 transitions. Second operand 5 states. [2021-01-06 20:35:05,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:35:05,307 INFO L93 Difference]: Finished difference Result 218547 states and 295321 transitions. [2021-01-06 20:35:05,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 20:35:05,308 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2021-01-06 20:35:05,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:35:05,509 INFO L225 Difference]: With dead ends: 218547 [2021-01-06 20:35:05,509 INFO L226 Difference]: Without dead ends: 124363 [2021-01-06 20:35:05,597 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 [2021-01-06 20:35:05,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124363 states. [2021-01-06 20:35:14,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124363 to 94226. [2021-01-06 20:35:14,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94226 states. [2021-01-06 20:35:15,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94226 states to 94226 states and 126625 transitions. [2021-01-06 20:35:15,141 INFO L78 Accepts]: Start accepts. Automaton has 94226 states and 126625 transitions. Word has length 64 [2021-01-06 20:35:15,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:35:15,141 INFO L481 AbstractCegarLoop]: Abstraction has 94226 states and 126625 transitions. [2021-01-06 20:35:15,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 20:35:15,142 INFO L276 IsEmpty]: Start isEmpty. Operand 94226 states and 126625 transitions. [2021-01-06 20:35:15,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-01-06 20:35:15,148 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:35:15,149 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] [2021-01-06 20:35:15,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-01-06 20:35:15,149 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:35:15,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:35:15,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1913170926, now seen corresponding path program 1 times [2021-01-06 20:35:15,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:35:15,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815958635] [2021-01-06 20:35:15,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:35:15,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:35:15,238 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-06 20:35:15,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815958635] [2021-01-06 20:35:15,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:35:15,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 20:35:15,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036353732] [2021-01-06 20:35:15,239 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 20:35:15,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:35:15,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 20:35:15,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 20:35:15,240 INFO L87 Difference]: Start difference. First operand 94226 states and 126625 transitions. Second operand 5 states. [2021-01-06 20:35:26,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:35:26,818 INFO L93 Difference]: Finished difference Result 139990 states and 190048 transitions. [2021-01-06 20:35:26,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 20:35:26,819 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2021-01-06 20:35:26,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:35:27,002 INFO L225 Difference]: With dead ends: 139990 [2021-01-06 20:35:27,002 INFO L226 Difference]: Without dead ends: 120199 [2021-01-06 20:35:27,042 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 [2021-01-06 20:35:27,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120199 states. [2021-01-06 20:35:38,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120199 to 110824. [2021-01-06 20:35:38,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110824 states. [2021-01-06 20:35:38,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110824 states to 110824 states and 148659 transitions. [2021-01-06 20:35:38,383 INFO L78 Accepts]: Start accepts. Automaton has 110824 states and 148659 transitions. Word has length 64 [2021-01-06 20:35:38,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:35:38,384 INFO L481 AbstractCegarLoop]: Abstraction has 110824 states and 148659 transitions. [2021-01-06 20:35:38,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 20:35:38,384 INFO L276 IsEmpty]: Start isEmpty. Operand 110824 states and 148659 transitions. [2021-01-06 20:35:38,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-01-06 20:35:38,390 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:35:38,390 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-01-06 20:35:38,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-01-06 20:35:38,390 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:35:38,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:35:38,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1760409357, now seen corresponding path program 1 times [2021-01-06 20:35:38,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:35:38,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628169818] [2021-01-06 20:35:38,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:35:38,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:35:38,453 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:35:38,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628169818] [2021-01-06 20:35:38,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:35:38,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:35:38,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154892365] [2021-01-06 20:35:38,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:35:38,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:35:38,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:35:38,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:35:38,459 INFO L87 Difference]: Start difference. First operand 110824 states and 148659 transitions. Second operand 3 states. [2021-01-06 20:35:52,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:35:52,660 INFO L93 Difference]: Finished difference Result 231082 states and 308960 transitions. [2021-01-06 20:35:52,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:35:52,661 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2021-01-06 20:35:52,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:35:52,993 INFO L225 Difference]: With dead ends: 231082 [2021-01-06 20:35:52,993 INFO L226 Difference]: Without dead ends: 130012 [2021-01-06 20:35:53,068 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 [2021-01-06 20:35:53,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130012 states. [2021-01-06 20:36:05,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130012 to 112653. [2021-01-06 20:36:05,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112653 states. [2021-01-06 20:36:05,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112653 states to 112653 states and 149049 transitions. [2021-01-06 20:36:05,319 INFO L78 Accepts]: Start accepts. Automaton has 112653 states and 149049 transitions. Word has length 64 [2021-01-06 20:36:05,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:36:05,319 INFO L481 AbstractCegarLoop]: Abstraction has 112653 states and 149049 transitions. [2021-01-06 20:36:05,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:36:05,320 INFO L276 IsEmpty]: Start isEmpty. Operand 112653 states and 149049 transitions. [2021-01-06 20:36:05,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-01-06 20:36:05,531 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:36:05,532 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-01-06 20:36:05,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-01-06 20:36:05,534 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:36:05,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:36:05,535 INFO L82 PathProgramCache]: Analyzing trace with hash 138921381, now seen corresponding path program 1 times [2021-01-06 20:36:05,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:36:05,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782557805] [2021-01-06 20:36:05,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:36:05,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:36:05,643 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:36:05,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782557805] [2021-01-06 20:36:05,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120457310] [2021-01-06 20:36:05,644 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 [2021-01-06 20:36:05,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:36:05,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 6 conjunts are in the unsatisfiable core [2021-01-06 20:36:05,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 20:36:05,985 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:36:05,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 20:36:05,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-01-06 20:36:05,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918461963] [2021-01-06 20:36:05,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-06 20:36:05,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:36:05,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-06 20:36:05,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-01-06 20:36:05,988 INFO L87 Difference]: Start difference. First operand 112653 states and 149049 transitions. Second operand 11 states.