/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.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 20:41:06,784 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 20:41:06,789 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 20:41:06,850 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 20:41:06,851 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 20:41:06,855 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 20:41:06,860 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 20:41:06,864 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 20:41:06,869 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 20:41:06,871 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 20:41:06,872 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 20:41:06,874 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 20:41:06,875 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 20:41:06,876 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 20:41:06,877 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 20:41:06,879 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 20:41:06,880 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 20:41:06,881 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 20:41:06,883 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 20:41:06,886 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 20:41:06,888 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 20:41:06,889 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 20:41:06,891 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 20:41:06,892 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 20:41:06,908 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-06 20:41:06,909 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-06 20:41:06,909 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-06 20:41:06,910 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-06 20:41:06,911 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-06 20:41:06,912 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-06 20:41:06,915 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 20:41:06,916 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 20:41:06,917 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 20:41:06,918 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 20:41:06,921 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 20:41:06,921 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 20:41:06,922 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 20:41:06,922 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 20:41:06,923 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 20:41:06,924 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 20:41:06,924 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 20:41:06,925 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 20:41:06,952 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 20:41:06,953 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 20:41:06,954 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 20:41:06,955 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 20:41:06,955 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 20:41:06,955 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 20:41:06,955 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 20:41:06,956 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 20:41:06,956 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 20:41:06,956 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 20:41:06,956 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 20:41:06,956 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 20:41:06,957 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 20:41:06,957 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 20:41:06,957 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 20:41:06,957 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 20:41:06,958 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 20:41:06,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 20:41:06,958 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 20:41:06,958 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 20:41:06,958 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 20:41:06,959 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 20:41:06,959 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 20:41:06,959 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 20:41:06,959 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 20:41:06,959 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 20:41:07,344 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 20:41:07,385 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 20:41:07,389 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 20:41:07,390 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 20:41:07,391 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 20:41:07,392 INFO L432 ainManager$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.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2021-01-06 20:41:07,484 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/62d2be57d/693ce5dce2dc4d8687487301d5b58457/FLAGbb4a6d59a [2021-01-06 20:41:08,268 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 20:41:08,269 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2021-01-06 20:41:08,291 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/62d2be57d/693ce5dce2dc4d8687487301d5b58457/FLAGbb4a6d59a [2021-01-06 20:41:08,538 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/62d2be57d/693ce5dce2dc4d8687487301d5b58457 [2021-01-06 20:41:08,542 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 20:41:08,545 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 20:41:08,546 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 20:41:08,547 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 20:41:08,557 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 20:41:08,559 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 08:41:08" (1/1) ... [2021-01-06 20:41:08,561 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ae9862f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:41:08, skipping insertion in model container [2021-01-06 20:41:08,561 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 08:41:08" (1/1) ... [2021-01-06 20:41:08,572 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 20:41:08,640 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[~id4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_19289~0,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[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_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[~node1__m1~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_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[~node4__m4~0,] left hand side expression in assignment: lhs: VariableLHS[~node4__m4~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,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[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_19424~0,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 20:41:08,867 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.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[4933,4946] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_19510~0,GLOBAL] [2021-01-06 20:41:08,903 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 20:41:08,920 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[~id4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_19289~0,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[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_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[~node1__m1~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_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[~node4__m4~0,] left hand side expression in assignment: lhs: VariableLHS[~node4__m4~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,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[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_19424~0,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 20:41:08,967 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.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[4933,4946] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_19510~0,GLOBAL] [2021-01-06 20:41:08,996 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 20:41:09,022 INFO L208 MainTranslator]: Completed translation [2021-01-06 20:41:09,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:41:09 WrapperNode [2021-01-06 20:41:09,023 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 20:41:09,028 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 20:41:09,028 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 20:41:09,028 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 20:41:09,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:41:09" (1/1) ... [2021-01-06 20:41:09,050 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:41:09" (1/1) ... [2021-01-06 20:41:09,108 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 20:41:09,109 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 20:41:09,110 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 20:41:09,110 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 20:41:09,124 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:41:09" (1/1) ... [2021-01-06 20:41:09,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:41:09" (1/1) ... [2021-01-06 20:41:09,141 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:41:09" (1/1) ... [2021-01-06 20:41:09,142 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:41:09" (1/1) ... [2021-01-06 20:41:09,163 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:41:09" (1/1) ... [2021-01-06 20:41:09,174 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:41:09" (1/1) ... [2021-01-06 20:41:09,178 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:41:09" (1/1) ... [2021-01-06 20:41:09,183 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 20:41:09,184 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 20:41:09,185 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 20:41:09,185 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 20:41:09,186 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:41:09" (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 20:41:09,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 20:41:09,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 20:41:09,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 20:41:09,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 20:41:10,088 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 20:41:10,089 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-01-06 20:41:10,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 08:41:10 BoogieIcfgContainer [2021-01-06 20:41:10,091 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 20:41:10,093 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 20:41:10,093 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 20:41:10,097 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 20:41:10,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 08:41:08" (1/3) ... [2021-01-06 20:41:10,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b2392ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 08:41:10, skipping insertion in model container [2021-01-06 20:41:10,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:41:09" (2/3) ... [2021-01-06 20:41:10,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b2392ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 08:41:10, skipping insertion in model container [2021-01-06 20:41:10,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 08:41:10" (3/3) ... [2021-01-06 20:41:10,101 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2021-01-06 20:41:10,108 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 20:41:10,114 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 20:41:10,131 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 20:41:10,158 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 20:41:10,158 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 20:41:10,158 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 20:41:10,158 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 20:41:10,158 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 20:41:10,159 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 20:41:10,159 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 20:41:10,159 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 20:41:10,177 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states. [2021-01-06 20:41:10,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-01-06 20:41:10,186 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:41:10,187 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:41:10,188 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:41:10,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:41:10,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1289871298, now seen corresponding path program 1 times [2021-01-06 20:41:10,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:41:10,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76766309] [2021-01-06 20:41:10,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:41:10,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:41:10,600 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 20:41:10,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76766309] [2021-01-06 20:41:10,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:41:10,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:41:10,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662374538] [2021-01-06 20:41:10,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:41:10,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:41:10,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:41:10,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:41:10,631 INFO L87 Difference]: Start difference. First operand 110 states. Second operand 3 states. [2021-01-06 20:41:10,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:41:10,718 INFO L93 Difference]: Finished difference Result 260 states and 419 transitions. [2021-01-06 20:41:10,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:41:10,720 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2021-01-06 20:41:10,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:41:10,745 INFO L225 Difference]: With dead ends: 260 [2021-01-06 20:41:10,745 INFO L226 Difference]: Without dead ends: 171 [2021-01-06 20:41:10,754 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 20:41:10,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-01-06 20:41:10,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 169. [2021-01-06 20:41:10,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2021-01-06 20:41:10,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 253 transitions. [2021-01-06 20:41:10,822 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 253 transitions. Word has length 48 [2021-01-06 20:41:10,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:41:10,823 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 253 transitions. [2021-01-06 20:41:10,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:41:10,824 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 253 transitions. [2021-01-06 20:41:10,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-01-06 20:41:10,826 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:41:10,827 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:41:10,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 20:41:10,827 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:41:10,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:41:10,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1971653998, now seen corresponding path program 1 times [2021-01-06 20:41:10,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:41:10,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065465303] [2021-01-06 20:41:10,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:41:10,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:41:10,999 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 20:41:10,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065465303] [2021-01-06 20:41:11,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:41:11,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:41:11,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568734398] [2021-01-06 20:41:11,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:41:11,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:41:11,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:41:11,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:41:11,004 INFO L87 Difference]: Start difference. First operand 169 states and 253 transitions. Second operand 3 states. [2021-01-06 20:41:11,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:41:11,120 INFO L93 Difference]: Finished difference Result 421 states and 653 transitions. [2021-01-06 20:41:11,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:41:11,122 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49 [2021-01-06 20:41:11,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:41:11,128 INFO L225 Difference]: With dead ends: 421 [2021-01-06 20:41:11,128 INFO L226 Difference]: Without dead ends: 279 [2021-01-06 20:41:11,135 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 20:41:11,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2021-01-06 20:41:11,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 277. [2021-01-06 20:41:11,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2021-01-06 20:41:11,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 424 transitions. [2021-01-06 20:41:11,182 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 424 transitions. Word has length 49 [2021-01-06 20:41:11,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:41:11,183 INFO L481 AbstractCegarLoop]: Abstraction has 277 states and 424 transitions. [2021-01-06 20:41:11,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:41:11,183 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 424 transitions. [2021-01-06 20:41:11,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-01-06 20:41:11,185 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:41:11,186 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:41:11,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 20:41:11,186 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:41:11,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:41:11,187 INFO L82 PathProgramCache]: Analyzing trace with hash 663495285, now seen corresponding path program 1 times [2021-01-06 20:41:11,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:41:11,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007251710] [2021-01-06 20:41:11,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:41:11,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:41:11,323 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 20:41:11,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007251710] [2021-01-06 20:41:11,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:41:11,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:41:11,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728351609] [2021-01-06 20:41:11,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:41:11,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:41:11,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:41:11,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:41:11,332 INFO L87 Difference]: Start difference. First operand 277 states and 424 transitions. Second operand 3 states. [2021-01-06 20:41:11,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:41:11,445 INFO L93 Difference]: Finished difference Result 713 states and 1114 transitions. [2021-01-06 20:41:11,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:41:11,449 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2021-01-06 20:41:11,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:41:11,455 INFO L225 Difference]: With dead ends: 713 [2021-01-06 20:41:11,455 INFO L226 Difference]: Without dead ends: 463 [2021-01-06 20:41:11,459 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 20:41:11,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2021-01-06 20:41:11,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 461. [2021-01-06 20:41:11,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2021-01-06 20:41:11,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 712 transitions. [2021-01-06 20:41:11,538 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 712 transitions. Word has length 50 [2021-01-06 20:41:11,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:41:11,543 INFO L481 AbstractCegarLoop]: Abstraction has 461 states and 712 transitions. [2021-01-06 20:41:11,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:41:11,543 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 712 transitions. [2021-01-06 20:41:11,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-01-06 20:41:11,548 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:41:11,548 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:41:11,549 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 20:41:11,549 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:41:11,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:41:11,550 INFO L82 PathProgramCache]: Analyzing trace with hash 1706895887, now seen corresponding path program 1 times [2021-01-06 20:41:11,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:41:11,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215002614] [2021-01-06 20:41:11,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:41:11,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:41:11,703 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 20:41:11,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215002614] [2021-01-06 20:41:11,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:41:11,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:41:11,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894447578] [2021-01-06 20:41:11,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:41:11,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:41:11,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:41:11,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:41:11,711 INFO L87 Difference]: Start difference. First operand 461 states and 712 transitions. Second operand 3 states. [2021-01-06 20:41:11,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:41:11,767 INFO L93 Difference]: Finished difference Result 1201 states and 1874 transitions. [2021-01-06 20:41:11,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:41:11,768 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2021-01-06 20:41:11,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:41:11,775 INFO L225 Difference]: With dead ends: 1201 [2021-01-06 20:41:11,775 INFO L226 Difference]: Without dead ends: 767 [2021-01-06 20:41:11,777 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 20:41:11,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2021-01-06 20:41:11,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 765. [2021-01-06 20:41:11,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 765 states. [2021-01-06 20:41:11,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 1180 transitions. [2021-01-06 20:41:11,833 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 1180 transitions. Word has length 51 [2021-01-06 20:41:11,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:41:11,834 INFO L481 AbstractCegarLoop]: Abstraction has 765 states and 1180 transitions. [2021-01-06 20:41:11,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:41:11,834 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 1180 transitions. [2021-01-06 20:41:11,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-01-06 20:41:11,838 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:41:11,838 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:41:11,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 20:41:11,839 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:41:11,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:41:11,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1133800764, now seen corresponding path program 1 times [2021-01-06 20:41:11,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:41:11,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335210478] [2021-01-06 20:41:11,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:41:11,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:41:12,082 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 20:41:12,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335210478] [2021-01-06 20:41:12,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:41:12,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 20:41:12,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446830675] [2021-01-06 20:41:12,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 20:41:12,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:41:12,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 20:41:12,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-01-06 20:41:12,085 INFO L87 Difference]: Start difference. First operand 765 states and 1180 transitions. Second operand 6 states. [2021-01-06 20:41:12,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:41:12,412 INFO L93 Difference]: Finished difference Result 3269 states and 5056 transitions. [2021-01-06 20:41:12,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 20:41:12,412 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2021-01-06 20:41:12,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:41:12,429 INFO L225 Difference]: With dead ends: 3269 [2021-01-06 20:41:12,430 INFO L226 Difference]: Without dead ends: 2531 [2021-01-06 20:41:12,432 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-01-06 20:41:12,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2531 states. [2021-01-06 20:41:12,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2531 to 2525. [2021-01-06 20:41:12,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2525 states. [2021-01-06 20:41:12,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2525 states to 2525 states and 3884 transitions. [2021-01-06 20:41:12,670 INFO L78 Accepts]: Start accepts. Automaton has 2525 states and 3884 transitions. Word has length 52 [2021-01-06 20:41:12,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:41:12,672 INFO L481 AbstractCegarLoop]: Abstraction has 2525 states and 3884 transitions. [2021-01-06 20:41:12,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 20:41:12,672 INFO L276 IsEmpty]: Start isEmpty. Operand 2525 states and 3884 transitions. [2021-01-06 20:41:12,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-01-06 20:41:12,681 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:41:12,681 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:41:12,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-06 20:41:12,682 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:41:12,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:41:12,682 INFO L82 PathProgramCache]: Analyzing trace with hash -2135389787, now seen corresponding path program 1 times [2021-01-06 20:41:12,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:41:12,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360650361] [2021-01-06 20:41:12,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:41:12,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:41:12,815 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 20:41:12,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360650361] [2021-01-06 20:41:12,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:41:12,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 20:41:12,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069065309] [2021-01-06 20:41:12,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 20:41:12,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:41:12,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 20:41:12,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 20:41:12,821 INFO L87 Difference]: Start difference. First operand 2525 states and 3884 transitions. Second operand 5 states. [2021-01-06 20:41:13,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:41:13,443 INFO L93 Difference]: Finished difference Result 6969 states and 10750 transitions. [2021-01-06 20:41:13,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 20:41:13,443 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 54 [2021-01-06 20:41:13,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:41:13,470 INFO L225 Difference]: With dead ends: 6969 [2021-01-06 20:41:13,471 INFO L226 Difference]: Without dead ends: 4471 [2021-01-06 20:41:13,479 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 20:41:13,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4471 states. [2021-01-06 20:41:13,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4471 to 4469. [2021-01-06 20:41:13,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4469 states. [2021-01-06 20:41:13,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4469 states to 4469 states and 6836 transitions. [2021-01-06 20:41:13,915 INFO L78 Accepts]: Start accepts. Automaton has 4469 states and 6836 transitions. Word has length 54 [2021-01-06 20:41:13,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:41:13,915 INFO L481 AbstractCegarLoop]: Abstraction has 4469 states and 6836 transitions. [2021-01-06 20:41:13,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 20:41:13,916 INFO L276 IsEmpty]: Start isEmpty. Operand 4469 states and 6836 transitions. [2021-01-06 20:41:13,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-01-06 20:41:13,917 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:41:13,918 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:41:13,918 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-06 20:41:13,918 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:41:13,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:41:13,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1662484042, now seen corresponding path program 1 times [2021-01-06 20:41:13,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:41:13,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008846687] [2021-01-06 20:41:13,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:41:13,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:41:14,070 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 20:41:14,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008846687] [2021-01-06 20:41:14,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:41:14,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 20:41:14,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311968584] [2021-01-06 20:41:14,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 20:41:14,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:41:14,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 20:41:14,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 20:41:14,073 INFO L87 Difference]: Start difference. First operand 4469 states and 6836 transitions. Second operand 6 states. [2021-01-06 20:41:15,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:41:15,248 INFO L93 Difference]: Finished difference Result 21327 states and 32681 transitions. [2021-01-06 20:41:15,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 20:41:15,249 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2021-01-06 20:41:15,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:41:15,358 INFO L225 Difference]: With dead ends: 21327 [2021-01-06 20:41:15,358 INFO L226 Difference]: Without dead ends: 16885 [2021-01-06 20:41:15,370 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-01-06 20:41:15,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16885 states. [2021-01-06 20:41:16,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16885 to 8909. [2021-01-06 20:41:16,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8909 states. [2021-01-06 20:41:16,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8909 states to 8909 states and 13420 transitions. [2021-01-06 20:41:16,358 INFO L78 Accepts]: Start accepts. Automaton has 8909 states and 13420 transitions. Word has length 54 [2021-01-06 20:41:16,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:41:16,360 INFO L481 AbstractCegarLoop]: Abstraction has 8909 states and 13420 transitions. [2021-01-06 20:41:16,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 20:41:16,360 INFO L276 IsEmpty]: Start isEmpty. Operand 8909 states and 13420 transitions. [2021-01-06 20:41:16,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-01-06 20:41:16,361 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:41:16,361 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:41:16,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-06 20:41:16,362 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:41:16,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:41:16,362 INFO L82 PathProgramCache]: Analyzing trace with hash -22058530, now seen corresponding path program 1 times [2021-01-06 20:41:16,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:41:16,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543003782] [2021-01-06 20:41:16,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:41:16,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:41:16,481 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 20:41:16,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543003782] [2021-01-06 20:41:16,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:41:16,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 20:41:16,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884189849] [2021-01-06 20:41:16,483 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 20:41:16,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:41:16,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 20:41:16,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 20:41:16,485 INFO L87 Difference]: Start difference. First operand 8909 states and 13420 transitions. Second operand 5 states. [2021-01-06 20:41:18,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:41:18,018 INFO L93 Difference]: Finished difference Result 18239 states and 27261 transitions. [2021-01-06 20:41:18,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 20:41:18,018 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2021-01-06 20:41:18,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:41:18,068 INFO L225 Difference]: With dead ends: 18239 [2021-01-06 20:41:18,068 INFO L226 Difference]: Without dead ends: 18237 [2021-01-06 20:41:18,075 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 20:41:18,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18237 states. [2021-01-06 20:41:18,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18237 to 9357. [2021-01-06 20:41:18,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9357 states. [2021-01-06 20:41:19,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9357 states to 9357 states and 13868 transitions. [2021-01-06 20:41:19,016 INFO L78 Accepts]: Start accepts. Automaton has 9357 states and 13868 transitions. Word has length 55 [2021-01-06 20:41:19,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:41:19,016 INFO L481 AbstractCegarLoop]: Abstraction has 9357 states and 13868 transitions. [2021-01-06 20:41:19,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 20:41:19,017 INFO L276 IsEmpty]: Start isEmpty. Operand 9357 states and 13868 transitions. [2021-01-06 20:41:19,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-01-06 20:41:19,017 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:41:19,018 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:41:19,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-06 20:41:19,018 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:41:19,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:41:19,019 INFO L82 PathProgramCache]: Analyzing trace with hash -673241382, now seen corresponding path program 1 times [2021-01-06 20:41:19,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:41:19,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405721247] [2021-01-06 20:41:19,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:41:19,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:41:19,099 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 20:41:19,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405721247] [2021-01-06 20:41:19,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:41:19,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:41:19,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415714206] [2021-01-06 20:41:19,106 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:41:19,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:41:19,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:41:19,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:41:19,108 INFO L87 Difference]: Start difference. First operand 9357 states and 13868 transitions. Second operand 3 states. [2021-01-06 20:41:20,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:41:20,136 INFO L93 Difference]: Finished difference Result 21051 states and 31132 transitions. [2021-01-06 20:41:20,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:41:20,139 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2021-01-06 20:41:20,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:41:20,179 INFO L225 Difference]: With dead ends: 21051 [2021-01-06 20:41:20,179 INFO L226 Difference]: Without dead ends: 11721 [2021-01-06 20:41:20,196 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 20:41:20,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11721 states. [2021-01-06 20:41:21,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11721 to 11719. [2021-01-06 20:41:21,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11719 states. [2021-01-06 20:41:21,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11719 states to 11719 states and 17234 transitions. [2021-01-06 20:41:21,336 INFO L78 Accepts]: Start accepts. Automaton has 11719 states and 17234 transitions. Word has length 56 [2021-01-06 20:41:21,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:41:21,336 INFO L481 AbstractCegarLoop]: Abstraction has 11719 states and 17234 transitions. [2021-01-06 20:41:21,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:41:21,337 INFO L276 IsEmpty]: Start isEmpty. Operand 11719 states and 17234 transitions. [2021-01-06 20:41:21,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-01-06 20:41:21,344 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:41:21,344 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:41:21,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-01-06 20:41:21,345 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:41:21,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:41:21,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1821600213, now seen corresponding path program 1 times [2021-01-06 20:41:21,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:41:21,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967634369] [2021-01-06 20:41:21,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:41:21,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:41:21,483 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-06 20:41:21,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967634369] [2021-01-06 20:41:21,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440434481] [2021-01-06 20:41:21,484 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 20:41:21,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:41:21,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 12 conjunts are in the unsatisfiable core [2021-01-06 20:41:21,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 20:41:21,821 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-06 20:41:21,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 20:41:21,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 7 [2021-01-06 20:41:21,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606147292] [2021-01-06 20:41:21,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 20:41:21,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:41:21,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 20:41:21,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-01-06 20:41:21,825 INFO L87 Difference]: Start difference. First operand 11719 states and 17234 transitions. Second operand 7 states. [2021-01-06 20:41:23,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:41:23,550 INFO L93 Difference]: Finished difference Result 30739 states and 45293 transitions. [2021-01-06 20:41:23,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 20:41:23,552 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 77 [2021-01-06 20:41:23,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:41:23,610 INFO L225 Difference]: With dead ends: 30739 [2021-01-06 20:41:23,610 INFO L226 Difference]: Without dead ends: 21409 [2021-01-06 20:41:23,630 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-01-06 20:41:23,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21409 states. [2021-01-06 20:41:25,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21409 to 20375. [2021-01-06 20:41:25,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20375 states. [2021-01-06 20:41:25,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20375 states to 20375 states and 29730 transitions. [2021-01-06 20:41:25,262 INFO L78 Accepts]: Start accepts. Automaton has 20375 states and 29730 transitions. Word has length 77 [2021-01-06 20:41:25,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:41:25,262 INFO L481 AbstractCegarLoop]: Abstraction has 20375 states and 29730 transitions. [2021-01-06 20:41:25,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 20:41:25,262 INFO L276 IsEmpty]: Start isEmpty. Operand 20375 states and 29730 transitions. [2021-01-06 20:41:25,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-01-06 20:41:25,269 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:41:25,269 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:41:25,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-01-06 20:41:25,484 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:41:25,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:41:25,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1365606455, now seen corresponding path program 1 times [2021-01-06 20:41:25,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:41:25,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238267565] [2021-01-06 20:41:25,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:41:25,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:41:25,547 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 20:41:25,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238267565] [2021-01-06 20:41:25,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:41:25,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:41:25,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399988948] [2021-01-06 20:41:25,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:41:25,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:41:25,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:41:25,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:41:25,550 INFO L87 Difference]: Start difference. First operand 20375 states and 29730 transitions. Second operand 3 states. [2021-01-06 20:41:27,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:41:27,667 INFO L93 Difference]: Finished difference Result 50584 states and 73628 transitions. [2021-01-06 20:41:27,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:41:27,668 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2021-01-06 20:41:27,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:41:27,755 INFO L225 Difference]: With dead ends: 50584 [2021-01-06 20:41:27,755 INFO L226 Difference]: Without dead ends: 32750 [2021-01-06 20:41:27,786 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 20:41:27,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32750 states. [2021-01-06 20:41:30,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32750 to 31572. [2021-01-06 20:41:30,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31572 states. [2021-01-06 20:41:30,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31572 states to 31572 states and 45522 transitions. [2021-01-06 20:41:30,340 INFO L78 Accepts]: Start accepts. Automaton has 31572 states and 45522 transitions. Word has length 78 [2021-01-06 20:41:30,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:41:30,341 INFO L481 AbstractCegarLoop]: Abstraction has 31572 states and 45522 transitions. [2021-01-06 20:41:30,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:41:30,341 INFO L276 IsEmpty]: Start isEmpty. Operand 31572 states and 45522 transitions. [2021-01-06 20:41:30,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-01-06 20:41:30,351 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:41:30,351 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:41:30,352 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-01-06 20:41:30,352 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:41:30,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:41:30,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1977851660, now seen corresponding path program 1 times [2021-01-06 20:41:30,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:41:30,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384431588] [2021-01-06 20:41:30,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:41:30,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:41:30,411 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 20:41:30,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384431588] [2021-01-06 20:41:30,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:41:30,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:41:30,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118332317] [2021-01-06 20:41:30,412 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:41:30,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:41:30,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:41:30,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:41:30,413 INFO L87 Difference]: Start difference. First operand 31572 states and 45522 transitions. Second operand 3 states. [2021-01-06 20:41:33,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:41:33,407 INFO L93 Difference]: Finished difference Result 68666 states and 98534 transitions. [2021-01-06 20:41:33,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:41:33,408 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2021-01-06 20:41:33,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:41:33,480 INFO L225 Difference]: With dead ends: 68666 [2021-01-06 20:41:33,481 INFO L226 Difference]: Without dead ends: 45608 [2021-01-06 20:41:33,519 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 20:41:33,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45608 states. [2021-01-06 20:41:36,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45608 to 43534. [2021-01-06 20:41:36,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43534 states. [2021-01-06 20:41:36,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43534 states to 43534 states and 61888 transitions. [2021-01-06 20:41:36,849 INFO L78 Accepts]: Start accepts. Automaton has 43534 states and 61888 transitions. Word has length 78 [2021-01-06 20:41:36,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:41:36,849 INFO L481 AbstractCegarLoop]: Abstraction has 43534 states and 61888 transitions. [2021-01-06 20:41:36,849 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:41:36,849 INFO L276 IsEmpty]: Start isEmpty. Operand 43534 states and 61888 transitions. [2021-01-06 20:41:36,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-01-06 20:41:36,862 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:41:36,862 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:41:36,862 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-01-06 20:41:36,863 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:41:36,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:41:36,863 INFO L82 PathProgramCache]: Analyzing trace with hash 440432859, now seen corresponding path program 1 times [2021-01-06 20:41:36,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:41:36,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439642212] [2021-01-06 20:41:36,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:41:36,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:41:36,916 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 20:41:36,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439642212] [2021-01-06 20:41:36,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:41:36,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:41:36,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086739386] [2021-01-06 20:41:36,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:41:36,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:41:36,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:41:36,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:41:36,919 INFO L87 Difference]: Start difference. First operand 43534 states and 61888 transitions. Second operand 3 states. [2021-01-06 20:41:40,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:41:40,342 INFO L93 Difference]: Finished difference Result 73077 states and 103213 transitions. [2021-01-06 20:41:40,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:41:40,343 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2021-01-06 20:41:40,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:41:40,398 INFO L225 Difference]: With dead ends: 73077 [2021-01-06 20:41:40,398 INFO L226 Difference]: Without dead ends: 45585 [2021-01-06 20:41:40,419 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 20:41:40,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45585 states. [2021-01-06 20:41:43,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45585 to 43755. [2021-01-06 20:41:43,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43755 states. [2021-01-06 20:41:43,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43755 states to 43755 states and 61230 transitions. [2021-01-06 20:41:43,455 INFO L78 Accepts]: Start accepts. Automaton has 43755 states and 61230 transitions. Word has length 78 [2021-01-06 20:41:43,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:41:43,455 INFO L481 AbstractCegarLoop]: Abstraction has 43755 states and 61230 transitions. [2021-01-06 20:41:43,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:41:43,455 INFO L276 IsEmpty]: Start isEmpty. Operand 43755 states and 61230 transitions. [2021-01-06 20:41:43,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-01-06 20:41:43,470 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:41:43,470 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:41:43,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-01-06 20:41:43,471 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:41:43,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:41:43,471 INFO L82 PathProgramCache]: Analyzing trace with hash -739881820, now seen corresponding path program 1 times [2021-01-06 20:41:43,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:41:43,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877743004] [2021-01-06 20:41:43,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:41:43,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:41:43,569 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-06 20:41:43,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877743004] [2021-01-06 20:41:43,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:41:43,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 20:41:43,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681328182] [2021-01-06 20:41:43,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 20:41:43,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:41:43,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 20:41:43,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 20:41:43,572 INFO L87 Difference]: Start difference. First operand 43755 states and 61230 transitions. Second operand 6 states. [2021-01-06 20:41:49,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:41:49,495 INFO L93 Difference]: Finished difference Result 98723 states and 139830 transitions. [2021-01-06 20:41:49,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 20:41:49,496 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2021-01-06 20:41:49,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:41:49,598 INFO L225 Difference]: With dead ends: 98723 [2021-01-06 20:41:49,599 INFO L226 Difference]: Without dead ends: 85130 [2021-01-06 20:41:49,629 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-01-06 20:41:49,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85130 states. [2021-01-06 20:41:54,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85130 to 56579. [2021-01-06 20:41:54,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56579 states. [2021-01-06 20:41:54,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56579 states to 56579 states and 79202 transitions. [2021-01-06 20:41:54,270 INFO L78 Accepts]: Start accepts. Automaton has 56579 states and 79202 transitions. Word has length 78 [2021-01-06 20:41:54,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:41:54,270 INFO L481 AbstractCegarLoop]: Abstraction has 56579 states and 79202 transitions. [2021-01-06 20:41:54,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 20:41:54,270 INFO L276 IsEmpty]: Start isEmpty. Operand 56579 states and 79202 transitions. [2021-01-06 20:41:54,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-01-06 20:41:54,279 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:41:54,279 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:41:54,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-01-06 20:41:54,280 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:41:54,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:41:54,280 INFO L82 PathProgramCache]: Analyzing trace with hash -542796544, now seen corresponding path program 1 times [2021-01-06 20:41:54,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:41:54,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180767918] [2021-01-06 20:41:54,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:41:54,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:41:54,365 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 20:41:54,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180767918] [2021-01-06 20:41:54,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:41:54,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 20:41:54,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913385773] [2021-01-06 20:41:54,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 20:41:54,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:41:54,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 20:41:54,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 20:41:54,367 INFO L87 Difference]: Start difference. First operand 56579 states and 79202 transitions. Second operand 6 states. [2021-01-06 20:42:01,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:42:01,764 INFO L93 Difference]: Finished difference Result 118670 states and 167826 transitions. [2021-01-06 20:42:01,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 20:42:01,765 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2021-01-06 20:42:01,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:42:01,880 INFO L225 Difference]: With dead ends: 118670 [2021-01-06 20:42:01,880 INFO L226 Difference]: Without dead ends: 97931 [2021-01-06 20:42:01,912 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-01-06 20:42:01,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97931 states. [2021-01-06 20:42:07,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97931 to 74851. [2021-01-06 20:42:07,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74851 states. [2021-01-06 20:42:08,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74851 states to 74851 states and 104688 transitions. [2021-01-06 20:42:08,043 INFO L78 Accepts]: Start accepts. Automaton has 74851 states and 104688 transitions. Word has length 78 [2021-01-06 20:42:08,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:42:08,044 INFO L481 AbstractCegarLoop]: Abstraction has 74851 states and 104688 transitions. [2021-01-06 20:42:08,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 20:42:08,044 INFO L276 IsEmpty]: Start isEmpty. Operand 74851 states and 104688 transitions. [2021-01-06 20:42:08,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-01-06 20:42:08,052 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:42:08,052 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:42:08,052 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-01-06 20:42:08,052 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:42:08,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:42:08,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1309904988, now seen corresponding path program 1 times [2021-01-06 20:42:08,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:42:08,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661533754] [2021-01-06 20:42:08,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:42:08,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:42:08,156 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 20:42:08,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661533754] [2021-01-06 20:42:08,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:42:08,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 20:42:08,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966581146] [2021-01-06 20:42:08,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 20:42:08,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:42:08,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 20:42:08,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-01-06 20:42:08,158 INFO L87 Difference]: Start difference. First operand 74851 states and 104688 transitions. Second operand 6 states. [2021-01-06 20:42:23,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:42:23,239 INFO L93 Difference]: Finished difference Result 255526 states and 356234 transitions. [2021-01-06 20:42:23,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 20:42:23,240 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2021-01-06 20:42:23,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:42:23,688 INFO L225 Difference]: With dead ends: 255526 [2021-01-06 20:42:23,688 INFO L226 Difference]: Without dead ends: 180782 [2021-01-06 20:42:23,750 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 20:42:23,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180782 states. [2021-01-06 20:42:38,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180782 to 177624. [2021-01-06 20:42:38,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177624 states. [2021-01-06 20:42:38,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177624 states to 177624 states and 246808 transitions. [2021-01-06 20:42:38,711 INFO L78 Accepts]: Start accepts. Automaton has 177624 states and 246808 transitions. Word has length 78 [2021-01-06 20:42:38,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:42:38,711 INFO L481 AbstractCegarLoop]: Abstraction has 177624 states and 246808 transitions. [2021-01-06 20:42:38,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 20:42:38,712 INFO L276 IsEmpty]: Start isEmpty. Operand 177624 states and 246808 transitions. [2021-01-06 20:42:38,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-01-06 20:42:38,723 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:42:38,723 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:42:38,723 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-01-06 20:42:38,724 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:42:38,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:42:38,724 INFO L82 PathProgramCache]: Analyzing trace with hash 209052831, now seen corresponding path program 1 times [2021-01-06 20:42:38,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:42:38,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605029505] [2021-01-06 20:42:38,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:42:38,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:42:38,844 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 20:42:38,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605029505] [2021-01-06 20:42:38,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:42:38,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 20:42:38,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572235287] [2021-01-06 20:42:38,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 20:42:38,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:42:38,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 20:42:38,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-01-06 20:42:38,847 INFO L87 Difference]: Start difference. First operand 177624 states and 246808 transitions. Second operand 6 states. [2021-01-06 20:42:59,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:42:59,635 INFO L93 Difference]: Finished difference Result 292804 states and 410479 transitions. [2021-01-06 20:42:59,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 20:42:59,636 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2021-01-06 20:42:59,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:43:00,305 INFO L225 Difference]: With dead ends: 292804 [2021-01-06 20:43:00,305 INFO L226 Difference]: Without dead ends: 270290 [2021-01-06 20:43:00,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-01-06 20:43:00,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270290 states. [2021-01-06 20:43:17,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270290 to 199496. [2021-01-06 20:43:17,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199496 states. [2021-01-06 20:43:17,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199496 states to 199496 states and 277256 transitions. [2021-01-06 20:43:17,931 INFO L78 Accepts]: Start accepts. Automaton has 199496 states and 277256 transitions. Word has length 78 [2021-01-06 20:43:17,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:43:17,932 INFO L481 AbstractCegarLoop]: Abstraction has 199496 states and 277256 transitions. [2021-01-06 20:43:17,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 20:43:17,932 INFO L276 IsEmpty]: Start isEmpty. Operand 199496 states and 277256 transitions. [2021-01-06 20:43:17,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-01-06 20:43:17,941 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:43:17,941 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:43:17,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-01-06 20:43:17,941 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:43:17,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:43:17,942 INFO L82 PathProgramCache]: Analyzing trace with hash 839835956, now seen corresponding path program 1 times [2021-01-06 20:43:17,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:43:17,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225493974] [2021-01-06 20:43:17,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:43:17,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:43:18,031 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 20:43:18,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225493974] [2021-01-06 20:43:18,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:43:18,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 20:43:18,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88964948] [2021-01-06 20:43:18,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 20:43:18,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:43:18,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 20:43:18,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-01-06 20:43:18,034 INFO L87 Difference]: Start difference. First operand 199496 states and 277256 transitions. Second operand 6 states.