/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.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 20:58:15,186 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 20:58:15,191 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 20:58:15,264 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 20:58:15,265 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 20:58:15,271 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 20:58:15,276 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 20:58:15,282 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 20:58:15,286 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 20:58:15,294 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 20:58:15,299 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 20:58:15,301 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 20:58:15,302 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 20:58:15,305 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 20:58:15,320 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 20:58:15,322 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 20:58:15,323 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 20:58:15,324 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 20:58:15,326 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 20:58:15,329 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 20:58:15,331 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 20:58:15,332 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 20:58:15,334 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 20:58:15,335 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 20:58:15,338 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-06 20:58:15,338 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-06 20:58:15,339 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-06 20:58:15,340 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-06 20:58:15,341 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-06 20:58:15,342 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-06 20:58:15,343 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 20:58:15,344 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 20:58:15,345 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 20:58:15,346 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 20:58:15,347 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 20:58:15,348 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 20:58:15,349 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 20:58:15,349 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 20:58:15,350 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 20:58:15,351 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 20:58:15,353 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 20:58:15,354 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 20:58:15,384 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 20:58:15,384 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 20:58:15,386 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 20:58:15,387 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 20:58:15,387 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 20:58:15,387 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 20:58:15,387 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 20:58:15,388 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 20:58:15,388 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 20:58:15,388 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 20:58:15,388 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 20:58:15,389 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 20:58:15,389 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 20:58:15,389 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 20:58:15,389 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 20:58:15,390 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 20:58:15,390 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 20:58:15,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 20:58:15,391 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 20:58:15,391 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 20:58:15,391 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 20:58:15,391 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 20:58:15,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 20:58:15,392 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 20:58:15,392 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 20:58:15,392 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 20:58:15,916 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 20:58:15,971 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 20:58:15,974 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 20:58:15,976 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 20:58:15,977 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 20:58:15,978 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2021-01-06 20:58:16,065 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/3fec18419/468ea802def8443b8e9f3f276284e1b6/FLAG509eecc62 [2021-01-06 20:58:16,794 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 20:58:16,795 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2021-01-06 20:58:16,816 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/3fec18419/468ea802def8443b8e9f3f276284e1b6/FLAG509eecc62 [2021-01-06 20:58:17,080 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/3fec18419/468ea802def8443b8e9f3f276284e1b6 [2021-01-06 20:58:17,084 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 20:58:17,088 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 20:58:17,094 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 20:58:17,094 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 20:58:17,098 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 20:58:17,101 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 08:58:17" (1/1) ... [2021-01-06 20:58:17,104 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fa35949 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:58:17, skipping insertion in model container [2021-01-06 20:58:17,104 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 08:58:17" (1/1) ... [2021-01-06 20:58:17,113 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 20:58:17,183 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[~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[~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[~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[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_2904~0,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[~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[~node2__m2~0,] 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[~node3__m3~0,] 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[~node4__m4~0,] 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[~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_2995~0,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,] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~1,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~1,] 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__m2~1,] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~1,] 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__m3~1,] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~1,] 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__m4~1,] left hand side expression in assignment: lhs: VariableLHS[~node4__m4~1,] 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~1,] left hand side expression in assignment: lhs: VariableLHS[~__return_3157~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_2~0,] left hand side expression in assignment: lhs: VariableLHS[~assert__arg~1,] [2021-01-06 20:58:17,444 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.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[6234,6247] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~2,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~2,] 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__m2~2,] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~2,] 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__m3~2,] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~2,] 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__m4~2,] left hand side expression in assignment: lhs: VariableLHS[~node4__m4~2,] 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[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_0~1,] 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_0~1,] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~1,] 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_0~1,] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~1,] 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_0~1,] 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_0~1,] 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_0~1,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,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[~node4____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] [2021-01-06 20:58:17,539 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 20:58:17,558 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[~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[~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[~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[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_2904~0,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[~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[~node2__m2~0,] 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[~node3__m3~0,] 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[~node4__m4~0,] 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[~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_2995~0,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,] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~1,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~1,] 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__m2~1,] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~1,] 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__m3~1,] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~1,] 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__m4~1,] left hand side expression in assignment: lhs: VariableLHS[~node4__m4~1,] 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~1,] left hand side expression in assignment: lhs: VariableLHS[~__return_3157~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_2~0,] left hand side expression in assignment: lhs: VariableLHS[~assert__arg~1,] [2021-01-06 20:58:17,646 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.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[6234,6247] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~2,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~2,] 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__m2~2,] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~2,] 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__m3~2,] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~2,] 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__m4~2,] left hand side expression in assignment: lhs: VariableLHS[~node4__m4~2,] 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[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_0~1,] 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_0~1,] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~1,] 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_0~1,] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~1,] 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_0~1,] 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_0~1,] 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_0~1,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,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[~node4____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] [2021-01-06 20:58:17,684 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 20:58:17,724 INFO L208 MainTranslator]: Completed translation [2021-01-06 20:58:17,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:58:17 WrapperNode [2021-01-06 20:58:17,726 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 20:58:17,727 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 20:58:17,728 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 20:58:17,728 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 20:58:17,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:58:17" (1/1) ... [2021-01-06 20:58:17,757 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:58:17" (1/1) ... [2021-01-06 20:58:17,814 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 20:58:17,818 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 20:58:17,818 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 20:58:17,819 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 20:58:17,834 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:58:17" (1/1) ... [2021-01-06 20:58:17,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:58:17" (1/1) ... [2021-01-06 20:58:17,855 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:58:17" (1/1) ... [2021-01-06 20:58:17,857 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:58:17" (1/1) ... [2021-01-06 20:58:17,877 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:58:17" (1/1) ... [2021-01-06 20:58:17,897 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:58:17" (1/1) ... [2021-01-06 20:58:17,903 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:58:17" (1/1) ... [2021-01-06 20:58:17,910 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 20:58:17,911 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 20:58:17,911 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 20:58:17,911 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 20:58:17,912 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:58:17" (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 20:58:18,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 20:58:18,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 20:58:18,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 20:58:18,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 20:58:19,348 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 20:58:19,350 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-01-06 20:58:19,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 08:58:19 BoogieIcfgContainer [2021-01-06 20:58:19,354 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 20:58:19,356 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 20:58:19,357 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 20:58:19,362 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 20:58:19,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 08:58:17" (1/3) ... [2021-01-06 20:58:19,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21e43a56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 08:58:19, skipping insertion in model container [2021-01-06 20:58:19,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:58:17" (2/3) ... [2021-01-06 20:58:19,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21e43a56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 08:58:19, skipping insertion in model container [2021-01-06 20:58:19,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 08:58:19" (3/3) ... [2021-01-06 20:58:19,369 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2021-01-06 20:58:19,381 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 20:58:19,389 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 20:58:19,417 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 20:58:19,455 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 20:58:19,456 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 20:58:19,456 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 20:58:19,456 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 20:58:19,456 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 20:58:19,456 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 20:58:19,457 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 20:58:19,457 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 20:58:19,481 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states. [2021-01-06 20:58:19,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-01-06 20:58:19,494 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:58:19,495 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:58:19,496 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:58:19,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:58:19,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1503533793, now seen corresponding path program 1 times [2021-01-06 20:58:19,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:58:19,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733846768] [2021-01-06 20:58:19,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:58:19,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:58:20,087 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 20:58:20,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733846768] [2021-01-06 20:58:20,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:58:20,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:58:20,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067275074] [2021-01-06 20:58:20,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:58:20,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:58:20,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:58:20,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:58:20,138 INFO L87 Difference]: Start difference. First operand 123 states. Second operand 3 states. [2021-01-06 20:58:20,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:58:20,474 INFO L93 Difference]: Finished difference Result 245 states and 401 transitions. [2021-01-06 20:58:20,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:58:20,477 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2021-01-06 20:58:20,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:58:20,499 INFO L225 Difference]: With dead ends: 245 [2021-01-06 20:58:20,499 INFO L226 Difference]: Without dead ends: 184 [2021-01-06 20:58:20,504 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 20:58:20,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-01-06 20:58:20,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 182. [2021-01-06 20:58:20,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2021-01-06 20:58:20,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 263 transitions. [2021-01-06 20:58:20,609 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 263 transitions. Word has length 61 [2021-01-06 20:58:20,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:58:20,612 INFO L481 AbstractCegarLoop]: Abstraction has 182 states and 263 transitions. [2021-01-06 20:58:20,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:58:20,612 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 263 transitions. [2021-01-06 20:58:20,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-01-06 20:58:20,619 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:58:20,620 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:58:20,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 20:58:20,622 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:58:20,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:58:20,624 INFO L82 PathProgramCache]: Analyzing trace with hash -886934908, now seen corresponding path program 1 times [2021-01-06 20:58:20,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:58:20,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437978060] [2021-01-06 20:58:20,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:58:20,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:58:20,834 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 20:58:20,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437978060] [2021-01-06 20:58:20,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:58:20,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 20:58:20,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963412867] [2021-01-06 20:58:20,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 20:58:20,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:58:20,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 20:58:20,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 20:58:20,839 INFO L87 Difference]: Start difference. First operand 182 states and 263 transitions. Second operand 5 states. [2021-01-06 20:58:21,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:58:21,227 INFO L93 Difference]: Finished difference Result 460 states and 692 transitions. [2021-01-06 20:58:21,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 20:58:21,228 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2021-01-06 20:58:21,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:58:21,232 INFO L225 Difference]: With dead ends: 460 [2021-01-06 20:58:21,233 INFO L226 Difference]: Without dead ends: 307 [2021-01-06 20:58:21,235 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 20:58:21,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2021-01-06 20:58:21,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 305. [2021-01-06 20:58:21,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2021-01-06 20:58:21,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 455 transitions. [2021-01-06 20:58:21,274 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 455 transitions. Word has length 63 [2021-01-06 20:58:21,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:58:21,275 INFO L481 AbstractCegarLoop]: Abstraction has 305 states and 455 transitions. [2021-01-06 20:58:21,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 20:58:21,275 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 455 transitions. [2021-01-06 20:58:21,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-01-06 20:58:21,278 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:58:21,278 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:58:21,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 20:58:21,279 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:58:21,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:58:21,280 INFO L82 PathProgramCache]: Analyzing trace with hash 802634649, now seen corresponding path program 1 times [2021-01-06 20:58:21,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:58:21,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324789558] [2021-01-06 20:58:21,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:58:21,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:58:21,489 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 20:58:21,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324789558] [2021-01-06 20:58:21,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:58:21,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 20:58:21,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723603310] [2021-01-06 20:58:21,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 20:58:21,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:58:21,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 20:58:21,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-01-06 20:58:21,494 INFO L87 Difference]: Start difference. First operand 305 states and 455 transitions. Second operand 6 states. [2021-01-06 20:58:21,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:58:21,817 INFO L93 Difference]: Finished difference Result 763 states and 1167 transitions. [2021-01-06 20:58:21,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 20:58:21,819 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2021-01-06 20:58:21,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:58:21,823 INFO L225 Difference]: With dead ends: 763 [2021-01-06 20:58:21,823 INFO L226 Difference]: Without dead ends: 499 [2021-01-06 20:58:21,826 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 20:58:21,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2021-01-06 20:58:21,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 497. [2021-01-06 20:58:21,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 497 states. [2021-01-06 20:58:21,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 750 transitions. [2021-01-06 20:58:21,910 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 750 transitions. Word has length 64 [2021-01-06 20:58:21,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:58:21,911 INFO L481 AbstractCegarLoop]: Abstraction has 497 states and 750 transitions. [2021-01-06 20:58:21,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 20:58:21,914 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 750 transitions. [2021-01-06 20:58:21,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-01-06 20:58:21,917 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:58:21,917 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:58:21,918 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 20:58:21,918 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:58:21,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:58:21,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1237540328, now seen corresponding path program 1 times [2021-01-06 20:58:21,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:58:21,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162484161] [2021-01-06 20:58:21,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:58:22,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:58:22,118 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 20:58:22,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162484161] [2021-01-06 20:58:22,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:58:22,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 20:58:22,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254035204] [2021-01-06 20:58:22,123 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 20:58:22,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:58:22,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 20:58:22,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 20:58:22,132 INFO L87 Difference]: Start difference. First operand 497 states and 750 transitions. Second operand 5 states. [2021-01-06 20:58:22,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:58:22,385 INFO L93 Difference]: Finished difference Result 957 states and 1461 transitions. [2021-01-06 20:58:22,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 20:58:22,386 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2021-01-06 20:58:22,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:58:22,390 INFO L225 Difference]: With dead ends: 957 [2021-01-06 20:58:22,390 INFO L226 Difference]: Without dead ends: 497 [2021-01-06 20:58:22,392 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 20:58:22,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2021-01-06 20:58:22,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 497. [2021-01-06 20:58:22,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 497 states. [2021-01-06 20:58:22,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 741 transitions. [2021-01-06 20:58:22,440 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 741 transitions. Word has length 65 [2021-01-06 20:58:22,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:58:22,440 INFO L481 AbstractCegarLoop]: Abstraction has 497 states and 741 transitions. [2021-01-06 20:58:22,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 20:58:22,441 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 741 transitions. [2021-01-06 20:58:22,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-01-06 20:58:22,443 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:58:22,443 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:58:22,444 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 20:58:22,444 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:58:22,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:58:22,445 INFO L82 PathProgramCache]: Analyzing trace with hash 2023216621, now seen corresponding path program 1 times [2021-01-06 20:58:22,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:58:22,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538720991] [2021-01-06 20:58:22,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:58:22,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:58:22,616 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 20:58:22,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538720991] [2021-01-06 20:58:22,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:58:22,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 20:58:22,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553885029] [2021-01-06 20:58:22,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 20:58:22,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:58:22,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 20:58:22,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 20:58:22,620 INFO L87 Difference]: Start difference. First operand 497 states and 741 transitions. Second operand 5 states. [2021-01-06 20:58:22,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:58:22,858 INFO L93 Difference]: Finished difference Result 961 states and 1448 transitions. [2021-01-06 20:58:22,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 20:58:22,859 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 66 [2021-01-06 20:58:22,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:58:22,863 INFO L225 Difference]: With dead ends: 961 [2021-01-06 20:58:22,863 INFO L226 Difference]: Without dead ends: 497 [2021-01-06 20:58:22,865 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 20:58:22,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2021-01-06 20:58:22,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 497. [2021-01-06 20:58:22,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 497 states. [2021-01-06 20:58:22,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 732 transitions. [2021-01-06 20:58:22,908 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 732 transitions. Word has length 66 [2021-01-06 20:58:22,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:58:22,909 INFO L481 AbstractCegarLoop]: Abstraction has 497 states and 732 transitions. [2021-01-06 20:58:22,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 20:58:22,909 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 732 transitions. [2021-01-06 20:58:22,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-01-06 20:58:22,911 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:58:22,911 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:58:22,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-06 20:58:22,912 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:58:22,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:58:22,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1272574804, now seen corresponding path program 1 times [2021-01-06 20:58:22,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:58:22,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205473367] [2021-01-06 20:58:22,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:58:22,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:58:23,049 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 20:58:23,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205473367] [2021-01-06 20:58:23,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:58:23,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 20:58:23,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422955916] [2021-01-06 20:58:23,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 20:58:23,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:58:23,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 20:58:23,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-01-06 20:58:23,053 INFO L87 Difference]: Start difference. First operand 497 states and 732 transitions. Second operand 6 states. [2021-01-06 20:58:23,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:58:23,361 INFO L93 Difference]: Finished difference Result 2125 states and 3203 transitions. [2021-01-06 20:58:23,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 20:58:23,368 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2021-01-06 20:58:23,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:58:23,381 INFO L225 Difference]: With dead ends: 2125 [2021-01-06 20:58:23,381 INFO L226 Difference]: Without dead ends: 1743 [2021-01-06 20:58:23,383 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 20:58:23,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1743 states. [2021-01-06 20:58:23,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1743 to 695. [2021-01-06 20:58:23,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2021-01-06 20:58:23,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 1036 transitions. [2021-01-06 20:58:23,485 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 1036 transitions. Word has length 67 [2021-01-06 20:58:23,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:58:23,486 INFO L481 AbstractCegarLoop]: Abstraction has 695 states and 1036 transitions. [2021-01-06 20:58:23,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 20:58:23,486 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 1036 transitions. [2021-01-06 20:58:23,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-01-06 20:58:23,489 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:58:23,490 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:58:23,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-06 20:58:23,491 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:58:23,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:58:23,499 INFO L82 PathProgramCache]: Analyzing trace with hash 112254648, now seen corresponding path program 1 times [2021-01-06 20:58:23,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:58:23,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696616557] [2021-01-06 20:58:23,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:58:23,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:58:23,725 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 20:58:23,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696616557] [2021-01-06 20:58:23,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:58:23,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 20:58:23,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994857151] [2021-01-06 20:58:23,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 20:58:23,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:58:23,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 20:58:23,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-01-06 20:58:23,729 INFO L87 Difference]: Start difference. First operand 695 states and 1036 transitions. Second operand 6 states. [2021-01-06 20:58:24,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:58:24,062 INFO L93 Difference]: Finished difference Result 2299 states and 3469 transitions. [2021-01-06 20:58:24,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 20:58:24,063 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2021-01-06 20:58:24,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:58:24,075 INFO L225 Difference]: With dead ends: 2299 [2021-01-06 20:58:24,075 INFO L226 Difference]: Without dead ends: 1917 [2021-01-06 20:58:24,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 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 20:58:24,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1917 states. [2021-01-06 20:58:24,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1917 to 1107. [2021-01-06 20:58:24,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1107 states. [2021-01-06 20:58:24,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1107 states to 1107 states and 1666 transitions. [2021-01-06 20:58:24,218 INFO L78 Accepts]: Start accepts. Automaton has 1107 states and 1666 transitions. Word has length 67 [2021-01-06 20:58:24,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:58:24,220 INFO L481 AbstractCegarLoop]: Abstraction has 1107 states and 1666 transitions. [2021-01-06 20:58:24,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 20:58:24,221 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states and 1666 transitions. [2021-01-06 20:58:24,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-01-06 20:58:24,231 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:58:24,231 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:58:24,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-06 20:58:24,232 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:58:24,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:58:24,233 INFO L82 PathProgramCache]: Analyzing trace with hash 943476066, now seen corresponding path program 1 times [2021-01-06 20:58:24,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:58:24,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767635996] [2021-01-06 20:58:24,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:58:24,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:58:24,328 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 20:58:24,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767635996] [2021-01-06 20:58:24,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:58:24,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:58:24,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384464115] [2021-01-06 20:58:24,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:58:24,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:58:24,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:58:24,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:58:24,331 INFO L87 Difference]: Start difference. First operand 1107 states and 1666 transitions. Second operand 3 states. [2021-01-06 20:58:24,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:58:24,684 INFO L93 Difference]: Finished difference Result 2947 states and 4448 transitions. [2021-01-06 20:58:24,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:58:24,685 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2021-01-06 20:58:24,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:58:24,697 INFO L225 Difference]: With dead ends: 2947 [2021-01-06 20:58:24,697 INFO L226 Difference]: Without dead ends: 1971 [2021-01-06 20:58:24,701 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 20:58:24,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1971 states. [2021-01-06 20:58:24,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1971 to 1929. [2021-01-06 20:58:24,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1929 states. [2021-01-06 20:58:24,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1929 states to 1929 states and 2862 transitions. [2021-01-06 20:58:24,984 INFO L78 Accepts]: Start accepts. Automaton has 1929 states and 2862 transitions. Word has length 67 [2021-01-06 20:58:24,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:58:24,984 INFO L481 AbstractCegarLoop]: Abstraction has 1929 states and 2862 transitions. [2021-01-06 20:58:24,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:58:24,985 INFO L276 IsEmpty]: Start isEmpty. Operand 1929 states and 2862 transitions. [2021-01-06 20:58:24,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-01-06 20:58:24,986 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:58:24,986 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:58:24,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-06 20:58:24,986 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:58:24,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:58:24,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1116055329, now seen corresponding path program 1 times [2021-01-06 20:58:24,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:58:24,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958933980] [2021-01-06 20:58:24,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:58:25,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:58:25,049 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 20:58:25,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958933980] [2021-01-06 20:58:25,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:58:25,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:58:25,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250898410] [2021-01-06 20:58:25,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:58:25,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:58:25,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:58:25,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:58:25,054 INFO L87 Difference]: Start difference. First operand 1929 states and 2862 transitions. Second operand 3 states. [2021-01-06 20:58:25,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:58:25,470 INFO L93 Difference]: Finished difference Result 4809 states and 7160 transitions. [2021-01-06 20:58:25,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:58:25,471 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2021-01-06 20:58:25,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:58:25,487 INFO L225 Difference]: With dead ends: 4809 [2021-01-06 20:58:25,488 INFO L226 Difference]: Without dead ends: 3011 [2021-01-06 20:58:25,492 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 20:58:25,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3011 states. [2021-01-06 20:58:25,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3011 to 3009. [2021-01-06 20:58:25,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3009 states. [2021-01-06 20:58:25,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3009 states to 3009 states and 4438 transitions. [2021-01-06 20:58:25,897 INFO L78 Accepts]: Start accepts. Automaton has 3009 states and 4438 transitions. Word has length 67 [2021-01-06 20:58:25,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:58:25,898 INFO L481 AbstractCegarLoop]: Abstraction has 3009 states and 4438 transitions. [2021-01-06 20:58:25,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:58:25,898 INFO L276 IsEmpty]: Start isEmpty. Operand 3009 states and 4438 transitions. [2021-01-06 20:58:25,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-01-06 20:58:25,899 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:58:25,900 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:58:25,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-01-06 20:58:25,900 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:58:25,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:58:25,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1891365172, now seen corresponding path program 1 times [2021-01-06 20:58:25,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:58:25,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822172938] [2021-01-06 20:58:25,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:58:25,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:58:26,009 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 20:58:26,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822172938] [2021-01-06 20:58:26,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:58:26,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 20:58:26,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768270799] [2021-01-06 20:58:26,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 20:58:26,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:58:26,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 20:58:26,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-01-06 20:58:26,013 INFO L87 Difference]: Start difference. First operand 3009 states and 4438 transitions. Second operand 6 states. [2021-01-06 20:58:26,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:58:26,825 INFO L93 Difference]: Finished difference Result 7151 states and 10583 transitions. [2021-01-06 20:58:26,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 20:58:26,826 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2021-01-06 20:58:26,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:58:26,891 INFO L225 Difference]: With dead ends: 7151 [2021-01-06 20:58:26,892 INFO L226 Difference]: Without dead ends: 6085 [2021-01-06 20:58:26,896 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 20:58:26,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6085 states. [2021-01-06 20:58:27,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6085 to 3752. [2021-01-06 20:58:27,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3752 states. [2021-01-06 20:58:27,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3752 states to 3752 states and 5538 transitions. [2021-01-06 20:58:27,395 INFO L78 Accepts]: Start accepts. Automaton has 3752 states and 5538 transitions. Word has length 67 [2021-01-06 20:58:27,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:58:27,395 INFO L481 AbstractCegarLoop]: Abstraction has 3752 states and 5538 transitions. [2021-01-06 20:58:27,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 20:58:27,395 INFO L276 IsEmpty]: Start isEmpty. Operand 3752 states and 5538 transitions. [2021-01-06 20:58:27,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-01-06 20:58:27,397 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:58:27,397 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:58:27,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-01-06 20:58:27,398 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:58:27,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:58:27,399 INFO L82 PathProgramCache]: Analyzing trace with hash 2078718872, now seen corresponding path program 1 times [2021-01-06 20:58:27,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:58:27,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365796141] [2021-01-06 20:58:27,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:58:27,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:58:27,509 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 20:58:27,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365796141] [2021-01-06 20:58:27,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:58:27,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 20:58:27,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017376515] [2021-01-06 20:58:27,511 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 20:58:27,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:58:27,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 20:58:27,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-01-06 20:58:27,514 INFO L87 Difference]: Start difference. First operand 3752 states and 5538 transitions. Second operand 6 states. [2021-01-06 20:58:28,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:58:28,399 INFO L93 Difference]: Finished difference Result 7833 states and 11595 transitions. [2021-01-06 20:58:28,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 20:58:28,400 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2021-01-06 20:58:28,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:58:28,441 INFO L225 Difference]: With dead ends: 7833 [2021-01-06 20:58:28,441 INFO L226 Difference]: Without dead ends: 6767 [2021-01-06 20:58:28,447 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 1 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 20:58:28,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6767 states. [2021-01-06 20:58:29,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6767 to 4488. [2021-01-06 20:58:29,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4488 states. [2021-01-06 20:58:29,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4488 states to 4488 states and 6628 transitions. [2021-01-06 20:58:29,091 INFO L78 Accepts]: Start accepts. Automaton has 4488 states and 6628 transitions. Word has length 67 [2021-01-06 20:58:29,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:58:29,091 INFO L481 AbstractCegarLoop]: Abstraction has 4488 states and 6628 transitions. [2021-01-06 20:58:29,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 20:58:29,091 INFO L276 IsEmpty]: Start isEmpty. Operand 4488 states and 6628 transitions. [2021-01-06 20:58:29,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-01-06 20:58:29,093 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:58:29,093 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:58:29,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-01-06 20:58:29,094 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:58:29,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:58:29,095 INFO L82 PathProgramCache]: Analyzing trace with hash -654863315, now seen corresponding path program 1 times [2021-01-06 20:58:29,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:58:29,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796832079] [2021-01-06 20:58:29,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:58:29,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:58:29,335 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 20:58:29,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796832079] [2021-01-06 20:58:29,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:58:29,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-01-06 20:58:29,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485242722] [2021-01-06 20:58:29,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 20:58:29,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:58:29,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 20:58:29,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-01-06 20:58:29,339 INFO L87 Difference]: Start difference. First operand 4488 states and 6628 transitions. Second operand 10 states. [2021-01-06 20:58:31,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:58:31,572 INFO L93 Difference]: Finished difference Result 13486 states and 19839 transitions. [2021-01-06 20:58:31,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-01-06 20:58:31,573 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 68 [2021-01-06 20:58:31,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:58:31,606 INFO L225 Difference]: With dead ends: 13486 [2021-01-06 20:58:31,606 INFO L226 Difference]: Without dead ends: 9100 [2021-01-06 20:58:31,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=142, Invalid=410, Unknown=0, NotChecked=0, Total=552 [2021-01-06 20:58:31,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9100 states. [2021-01-06 20:58:32,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9100 to 4488. [2021-01-06 20:58:32,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4488 states. [2021-01-06 20:58:32,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4488 states to 4488 states and 6625 transitions. [2021-01-06 20:58:32,359 INFO L78 Accepts]: Start accepts. Automaton has 4488 states and 6625 transitions. Word has length 68 [2021-01-06 20:58:32,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:58:32,360 INFO L481 AbstractCegarLoop]: Abstraction has 4488 states and 6625 transitions. [2021-01-06 20:58:32,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 20:58:32,360 INFO L276 IsEmpty]: Start isEmpty. Operand 4488 states and 6625 transitions. [2021-01-06 20:58:32,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-01-06 20:58:32,362 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:58:32,362 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:58:32,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-01-06 20:58:32,362 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:58:32,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:58:32,363 INFO L82 PathProgramCache]: Analyzing trace with hash 302063151, now seen corresponding path program 1 times [2021-01-06 20:58:32,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:58:32,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342665576] [2021-01-06 20:58:32,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:58:32,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:58:32,607 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 20:58:32,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342665576] [2021-01-06 20:58:32,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:58:32,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-06 20:58:32,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942309379] [2021-01-06 20:58:32,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 20:58:32,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:58:32,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 20:58:32,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-01-06 20:58:32,609 INFO L87 Difference]: Start difference. First operand 4488 states and 6625 transitions. Second operand 9 states. [2021-01-06 20:58:33,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:58:33,869 INFO L93 Difference]: Finished difference Result 11046 states and 16327 transitions. [2021-01-06 20:58:33,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 20:58:33,870 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2021-01-06 20:58:33,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:58:33,886 INFO L225 Difference]: With dead ends: 11046 [2021-01-06 20:58:33,886 INFO L226 Difference]: Without dead ends: 6676 [2021-01-06 20:58:33,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2021-01-06 20:58:33,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6676 states. [2021-01-06 20:58:34,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6676 to 4488. [2021-01-06 20:58:34,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4488 states. [2021-01-06 20:58:34,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4488 states to 4488 states and 6624 transitions. [2021-01-06 20:58:34,404 INFO L78 Accepts]: Start accepts. Automaton has 4488 states and 6624 transitions. Word has length 69 [2021-01-06 20:58:34,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:58:34,404 INFO L481 AbstractCegarLoop]: Abstraction has 4488 states and 6624 transitions. [2021-01-06 20:58:34,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 20:58:34,404 INFO L276 IsEmpty]: Start isEmpty. Operand 4488 states and 6624 transitions. [2021-01-06 20:58:34,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-01-06 20:58:34,406 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:58:34,406 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:58:34,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-01-06 20:58:34,406 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:58:34,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:58:34,407 INFO L82 PathProgramCache]: Analyzing trace with hash 770281693, now seen corresponding path program 1 times [2021-01-06 20:58:34,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:58:34,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490093589] [2021-01-06 20:58:34,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:58:34,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:58:34,606 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 20:58:34,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490093589] [2021-01-06 20:58:34,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:58:34,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-01-06 20:58:34,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144528269] [2021-01-06 20:58:34,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 20:58:34,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:58:34,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 20:58:34,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-01-06 20:58:34,609 INFO L87 Difference]: Start difference. First operand 4488 states and 6624 transitions. Second operand 10 states. [2021-01-06 20:58:36,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:58:36,987 INFO L93 Difference]: Finished difference Result 13437 states and 19784 transitions. [2021-01-06 20:58:36,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-06 20:58:36,987 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 69 [2021-01-06 20:58:36,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:58:37,010 INFO L225 Difference]: With dead ends: 13437 [2021-01-06 20:58:37,011 INFO L226 Difference]: Without dead ends: 9066 [2021-01-06 20:58:37,020 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2021-01-06 20:58:37,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9066 states. [2021-01-06 20:58:37,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9066 to 4488. [2021-01-06 20:58:37,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4488 states. [2021-01-06 20:58:37,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4488 states to 4488 states and 6618 transitions. [2021-01-06 20:58:37,767 INFO L78 Accepts]: Start accepts. Automaton has 4488 states and 6618 transitions. Word has length 69 [2021-01-06 20:58:37,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:58:37,767 INFO L481 AbstractCegarLoop]: Abstraction has 4488 states and 6618 transitions. [2021-01-06 20:58:37,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 20:58:37,767 INFO L276 IsEmpty]: Start isEmpty. Operand 4488 states and 6618 transitions. [2021-01-06 20:58:37,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-01-06 20:58:37,769 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:58:37,769 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:58:37,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-01-06 20:58:37,770 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:58:37,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:58:37,771 INFO L82 PathProgramCache]: Analyzing trace with hash -2136147335, now seen corresponding path program 1 times [2021-01-06 20:58:37,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:58:37,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335575300] [2021-01-06 20:58:37,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:58:37,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:58:38,052 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 20:58:38,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335575300] [2021-01-06 20:58:38,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:58:38,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-01-06 20:58:38,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782509533] [2021-01-06 20:58:38,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 20:58:38,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:58:38,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 20:58:38,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-01-06 20:58:38,056 INFO L87 Difference]: Start difference. First operand 4488 states and 6618 transitions. Second operand 10 states. [2021-01-06 20:58:40,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:58:40,555 INFO L93 Difference]: Finished difference Result 13386 states and 19700 transitions. [2021-01-06 20:58:40,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-06 20:58:40,556 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 70 [2021-01-06 20:58:40,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:58:40,583 INFO L225 Difference]: With dead ends: 13386 [2021-01-06 20:58:40,583 INFO L226 Difference]: Without dead ends: 9051 [2021-01-06 20:58:40,594 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=127, Invalid=335, Unknown=0, NotChecked=0, Total=462 [2021-01-06 20:58:40,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9051 states. [2021-01-06 20:58:41,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9051 to 4488. [2021-01-06 20:58:41,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4488 states. [2021-01-06 20:58:41,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4488 states to 4488 states and 6609 transitions. [2021-01-06 20:58:41,457 INFO L78 Accepts]: Start accepts. Automaton has 4488 states and 6609 transitions. Word has length 70 [2021-01-06 20:58:41,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:58:41,457 INFO L481 AbstractCegarLoop]: Abstraction has 4488 states and 6609 transitions. [2021-01-06 20:58:41,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 20:58:41,458 INFO L276 IsEmpty]: Start isEmpty. Operand 4488 states and 6609 transitions. [2021-01-06 20:58:41,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-01-06 20:58:41,459 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:58:41,459 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:58:41,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-01-06 20:58:41,460 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:58:41,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:58:41,460 INFO L82 PathProgramCache]: Analyzing trace with hash -425050317, now seen corresponding path program 1 times [2021-01-06 20:58:41,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:58:41,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786465916] [2021-01-06 20:58:41,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:58:41,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:58:43,198 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 20:58:43,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786465916] [2021-01-06 20:58:43,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:58:43,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-01-06 20:58:43,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428938905] [2021-01-06 20:58:43,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-01-06 20:58:43,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:58:43,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-01-06 20:58:43,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2021-01-06 20:58:43,205 INFO L87 Difference]: Start difference. First operand 4488 states and 6609 transitions. Second operand 28 states. [2021-01-06 20:58:43,655 WARN L197 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 94 [2021-01-06 20:58:44,020 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 30 [2021-01-06 20:58:44,385 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 37 [2021-01-06 20:58:44,604 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2021-01-06 20:58:44,813 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 37 [2021-01-06 20:58:45,207 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 45 [2021-01-06 20:58:45,506 WARN L197 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-01-06 20:58:45,852 WARN L197 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-01-06 20:58:46,239 WARN L197 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2021-01-06 20:58:46,720 WARN L197 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 89 [2021-01-06 20:58:47,231 WARN L197 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 95 [2021-01-06 20:58:47,816 WARN L197 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 107 [2021-01-06 20:58:48,106 WARN L197 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2021-01-06 20:58:48,392 WARN L197 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2021-01-06 20:58:48,679 WARN L197 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2021-01-06 20:58:49,108 WARN L197 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-01-06 20:58:49,517 WARN L197 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-01-06 20:58:55,403 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 42 [2021-01-06 20:58:58,084 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 34 [2021-01-06 20:58:59,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:58:59,704 INFO L93 Difference]: Finished difference Result 25528 states and 37773 transitions. [2021-01-06 20:58:59,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-01-06 20:58:59,705 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 71 [2021-01-06 20:58:59,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:58:59,736 INFO L225 Difference]: With dead ends: 25528 [2021-01-06 20:58:59,736 INFO L226 Difference]: Without dead ends: 24460 [2021-01-06 20:58:59,745 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=539, Invalid=2541, Unknown=0, NotChecked=0, Total=3080 [2021-01-06 20:58:59,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24460 states. [2021-01-06 20:59:00,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24460 to 4498. [2021-01-06 20:59:00,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4498 states. [2021-01-06 20:59:00,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4498 states to 4498 states and 6621 transitions. [2021-01-06 20:59:00,926 INFO L78 Accepts]: Start accepts. Automaton has 4498 states and 6621 transitions. Word has length 71 [2021-01-06 20:59:00,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:59:00,927 INFO L481 AbstractCegarLoop]: Abstraction has 4498 states and 6621 transitions. [2021-01-06 20:59:00,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2021-01-06 20:59:00,927 INFO L276 IsEmpty]: Start isEmpty. Operand 4498 states and 6621 transitions. [2021-01-06 20:59:00,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-01-06 20:59:00,928 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:59:00,928 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:59:00,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-01-06 20:59:00,928 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:59:00,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:59:00,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1932415602, now seen corresponding path program 1 times [2021-01-06 20:59:00,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:59:00,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250505671] [2021-01-06 20:59:00,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:59:00,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:59:02,063 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 20:59:02,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250505671] [2021-01-06 20:59:02,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:59:02,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-01-06 20:59:02,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402269920] [2021-01-06 20:59:02,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-01-06 20:59:02,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:59:02,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-01-06 20:59:02,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=621, Unknown=0, NotChecked=0, Total=702 [2021-01-06 20:59:02,066 INFO L87 Difference]: Start difference. First operand 4498 states and 6621 transitions. Second operand 27 states. [2021-01-06 20:59:02,383 WARN L197 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 89 [2021-01-06 20:59:02,842 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2021-01-06 20:59:03,012 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 35 [2021-01-06 20:59:03,177 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 31 [2021-01-06 20:59:03,495 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 36 [2021-01-06 20:59:03,687 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2021-01-06 20:59:03,905 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2021-01-06 20:59:04,133 WARN L197 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-01-06 20:59:04,409 WARN L197 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 67 [2021-01-06 20:59:04,705 WARN L197 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2021-01-06 20:59:05,078 WARN L197 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 87 [2021-01-06 20:59:05,307 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2021-01-06 20:59:05,552 WARN L197 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2021-01-06 20:59:05,806 WARN L197 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2021-01-06 20:59:06,135 WARN L197 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2021-01-06 20:59:06,484 WARN L197 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2021-01-06 20:59:07,603 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2021-01-06 20:59:08,492 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 43 [2021-01-06 20:59:13,032 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2021-01-06 20:59:16,554 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 30 [2021-01-06 20:59:20,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:59:20,056 INFO L93 Difference]: Finished difference Result 36768 states and 54432 transitions. [2021-01-06 20:59:20,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-01-06 20:59:20,057 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 71 [2021-01-06 20:59:20,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:59:20,103 INFO L225 Difference]: With dead ends: 36768 [2021-01-06 20:59:20,103 INFO L226 Difference]: Without dead ends: 35701 [2021-01-06 20:59:20,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 738 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=578, Invalid=2962, Unknown=0, NotChecked=0, Total=3540 [2021-01-06 20:59:20,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35701 states. [2021-01-06 20:59:21,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35701 to 4503. [2021-01-06 20:59:21,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4503 states. [2021-01-06 20:59:21,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4503 states to 4503 states and 6627 transitions. [2021-01-06 20:59:21,578 INFO L78 Accepts]: Start accepts. Automaton has 4503 states and 6627 transitions. Word has length 71 [2021-01-06 20:59:21,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:59:21,578 INFO L481 AbstractCegarLoop]: Abstraction has 4503 states and 6627 transitions. [2021-01-06 20:59:21,579 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2021-01-06 20:59:21,579 INFO L276 IsEmpty]: Start isEmpty. Operand 4503 states and 6627 transitions. [2021-01-06 20:59:21,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-01-06 20:59:21,580 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:59:21,580 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:59:21,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-01-06 20:59:21,581 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:59:21,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:59:21,582 INFO L82 PathProgramCache]: Analyzing trace with hash -748125324, now seen corresponding path program 1 times [2021-01-06 20:59:21,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:59:21,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484803168] [2021-01-06 20:59:21,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:59:21,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:59:23,294 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 20:59:23,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484803168] [2021-01-06 20:59:23,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:59:23,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-01-06 20:59:23,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540894350] [2021-01-06 20:59:23,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-01-06 20:59:23,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:59:23,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-01-06 20:59:23,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=688, Unknown=0, NotChecked=0, Total=756 [2021-01-06 20:59:23,296 INFO L87 Difference]: Start difference. First operand 4503 states and 6627 transitions. Second operand 28 states. [2021-01-06 20:59:23,828 WARN L197 SmtUtils]: Spent 472.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 105 [2021-01-06 20:59:24,737 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 36 [2021-01-06 20:59:24,988 WARN L197 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 37 [2021-01-06 20:59:25,245 WARN L197 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 42 [2021-01-06 20:59:25,689 WARN L197 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2021-01-06 20:59:26,049 WARN L197 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2021-01-06 20:59:26,465 WARN L197 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 74 [2021-01-06 20:59:26,899 WARN L197 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 82 [2021-01-06 20:59:27,424 WARN L197 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 100 [2021-01-06 20:59:28,029 WARN L197 SmtUtils]: Spent 497.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 113 [2021-01-06 20:59:28,749 WARN L197 SmtUtils]: Spent 597.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 122 [2021-01-06 20:59:29,140 WARN L197 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2021-01-06 20:59:29,507 WARN L197 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2021-01-06 20:59:29,871 WARN L197 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2021-01-06 20:59:30,385 WARN L197 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 67 [2021-01-06 20:59:30,864 WARN L197 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2021-01-06 20:59:31,298 WARN L197 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2021-01-06 20:59:31,718 WARN L197 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-01-06 20:59:32,104 WARN L197 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2021-01-06 20:59:32,473 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 34 [2021-01-06 20:59:32,815 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 34 [2021-01-06 20:59:33,311 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 36 [2021-01-06 20:59:37,578 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 29 [2021-01-06 20:59:44,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:59:44,838 INFO L93 Difference]: Finished difference Result 25735 states and 38040 transitions. [2021-01-06 20:59:44,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-01-06 20:59:44,840 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 71 [2021-01-06 20:59:44,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:59:44,943 INFO L225 Difference]: With dead ends: 25735 [2021-01-06 20:59:44,943 INFO L226 Difference]: Without dead ends: 24667 [2021-01-06 20:59:44,951 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=672, Invalid=2750, Unknown=0, NotChecked=0, Total=3422 [2021-01-06 20:59:44,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24667 states. [2021-01-06 20:59:46,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24667 to 4503. [2021-01-06 20:59:46,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4503 states. [2021-01-06 20:59:46,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4503 states to 4503 states and 6627 transitions. [2021-01-06 20:59:46,345 INFO L78 Accepts]: Start accepts. Automaton has 4503 states and 6627 transitions. Word has length 71 [2021-01-06 20:59:46,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:59:46,345 INFO L481 AbstractCegarLoop]: Abstraction has 4503 states and 6627 transitions. [2021-01-06 20:59:46,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2021-01-06 20:59:46,345 INFO L276 IsEmpty]: Start isEmpty. Operand 4503 states and 6627 transitions. [2021-01-06 20:59:46,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-01-06 20:59:46,347 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:59:46,347 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:59:46,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-01-06 20:59:46,348 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:59:46,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:59:46,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1237414452, now seen corresponding path program 1 times [2021-01-06 20:59:46,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:59:46,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473100961] [2021-01-06 20:59:46,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:59:46,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:59:47,925 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 20:59:47,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473100961] [2021-01-06 20:59:47,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:59:47,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-01-06 20:59:47,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113172943] [2021-01-06 20:59:47,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-01-06 20:59:47,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:59:47,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-01-06 20:59:47,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=583, Unknown=0, NotChecked=0, Total=650 [2021-01-06 20:59:47,929 INFO L87 Difference]: Start difference. First operand 4503 states and 6627 transitions. Second operand 26 states. [2021-01-06 20:59:48,311 WARN L197 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 81 [2021-01-06 20:59:48,837 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2021-01-06 20:59:49,026 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2021-01-06 20:59:49,204 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 32 [2021-01-06 20:59:49,623 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2021-01-06 20:59:49,876 WARN L197 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2021-01-06 20:59:50,198 WARN L197 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2021-01-06 20:59:50,550 WARN L197 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2021-01-06 20:59:51,005 WARN L197 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 81 [2021-01-06 20:59:51,488 WARN L197 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 89 [2021-01-06 20:59:52,102 WARN L197 SmtUtils]: Spent 503.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 102 [2021-01-06 20:59:52,395 WARN L197 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2021-01-06 20:59:52,680 WARN L197 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2021-01-06 20:59:52,926 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2021-01-06 20:59:54,520 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2021-01-06 20:59:55,018 WARN L197 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2021-01-06 21:00:01,315 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2021-01-06 21:00:08,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:00:08,327 INFO L93 Difference]: Finished difference Result 29154 states and 43136 transitions. [2021-01-06 21:00:08,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-01-06 21:00:08,329 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 71 [2021-01-06 21:00:08,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:00:08,362 INFO L225 Difference]: With dead ends: 29154 [2021-01-06 21:00:08,363 INFO L226 Difference]: Without dead ends: 27362 [2021-01-06 21:00:08,371 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 583 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=455, Invalid=2625, Unknown=0, NotChecked=0, Total=3080 [2021-01-06 21:00:08,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27362 states. [2021-01-06 21:00:09,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27362 to 4513. [2021-01-06 21:00:09,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4513 states. [2021-01-06 21:00:09,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4513 states to 4513 states and 6639 transitions. [2021-01-06 21:00:09,840 INFO L78 Accepts]: Start accepts. Automaton has 4513 states and 6639 transitions. Word has length 71 [2021-01-06 21:00:09,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:00:09,841 INFO L481 AbstractCegarLoop]: Abstraction has 4513 states and 6639 transitions. [2021-01-06 21:00:09,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2021-01-06 21:00:09,841 INFO L276 IsEmpty]: Start isEmpty. Operand 4513 states and 6639 transitions. [2021-01-06 21:00:09,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-01-06 21:00:09,842 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:00:09,842 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 21:00:09,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-01-06 21:00:09,843 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:00:09,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:00:09,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1749525204, now seen corresponding path program 1 times [2021-01-06 21:00:09,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:00:09,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844986222] [2021-01-06 21:00:09,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:00:09,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:00:12,153 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 21:00:12,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844986222] [2021-01-06 21:00:12,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:00:12,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-01-06 21:00:12,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170516543] [2021-01-06 21:00:12,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-01-06 21:00:12,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:00:12,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-01-06 21:00:12,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=681, Unknown=0, NotChecked=0, Total=756 [2021-01-06 21:00:12,156 INFO L87 Difference]: Start difference. First operand 4513 states and 6639 transitions. Second operand 28 states. [2021-01-06 21:00:12,755 WARN L197 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 111 [2021-01-06 21:00:13,251 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2021-01-06 21:00:13,482 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2021-01-06 21:00:13,766 WARN L197 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2021-01-06 21:00:14,066 WARN L197 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2021-01-06 21:00:14,362 WARN L197 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2021-01-06 21:00:15,022 WARN L197 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2021-01-06 21:00:15,411 WARN L197 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2021-01-06 21:00:15,913 WARN L197 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 78 [2021-01-06 21:00:16,446 WARN L197 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 96 [2021-01-06 21:00:17,166 WARN L197 SmtUtils]: Spent 576.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 109 [2021-01-06 21:00:17,925 WARN L197 SmtUtils]: Spent 643.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 122 [2021-01-06 21:00:18,837 WARN L197 SmtUtils]: Spent 778.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 135 [2021-01-06 21:00:19,313 WARN L197 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2021-01-06 21:00:19,750 WARN L197 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2021-01-06 21:00:20,133 WARN L197 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2021-01-06 21:00:20,428 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2021-01-06 21:00:20,690 WARN L197 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2021-01-06 21:00:20,910 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 30 [2021-01-06 21:00:21,331 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2021-01-06 21:00:21,641 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2021-01-06 21:00:22,078 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2021-01-06 21:00:22,645 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2021-01-06 21:00:23,672 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2021-01-06 21:00:33,452 WARN L197 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2021-01-06 21:00:34,680 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2021-01-06 21:00:38,120 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 27 [2021-01-06 21:00:39,511 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2021-01-06 21:00:43,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:00:43,956 INFO L93 Difference]: Finished difference Result 31469 states and 46570 transitions. [2021-01-06 21:00:43,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-01-06 21:00:43,958 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 71 [2021-01-06 21:00:43,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:00:44,010 INFO L225 Difference]: With dead ends: 31469 [2021-01-06 21:00:44,010 INFO L226 Difference]: Without dead ends: 30401 [2021-01-06 21:00:44,020 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 697 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=557, Invalid=3103, Unknown=0, NotChecked=0, Total=3660 [2021-01-06 21:00:44,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30401 states. [2021-01-06 21:00:45,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30401 to 4513. [2021-01-06 21:00:45,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4513 states. [2021-01-06 21:00:45,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4513 states to 4513 states and 6639 transitions. [2021-01-06 21:00:45,700 INFO L78 Accepts]: Start accepts. Automaton has 4513 states and 6639 transitions. Word has length 71 [2021-01-06 21:00:45,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:00:45,700 INFO L481 AbstractCegarLoop]: Abstraction has 4513 states and 6639 transitions. [2021-01-06 21:00:45,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2021-01-06 21:00:45,700 INFO L276 IsEmpty]: Start isEmpty. Operand 4513 states and 6639 transitions. [2021-01-06 21:00:45,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-01-06 21:00:45,701 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:00:45,702 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 21:00:45,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-01-06 21:00:45,702 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:00:45,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:00:45,702 INFO L82 PathProgramCache]: Analyzing trace with hash -187976173, now seen corresponding path program 1 times [2021-01-06 21:00:45,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:00:45,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32795494] [2021-01-06 21:00:45,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:00:45,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:00:47,880 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 21:00:47,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32795494] [2021-01-06 21:00:47,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:00:47,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-01-06 21:00:47,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149629767] [2021-01-06 21:00:47,882 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-01-06 21:00:47,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:00:47,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-01-06 21:00:47,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=632, Unknown=0, NotChecked=0, Total=702 [2021-01-06 21:00:47,884 INFO L87 Difference]: Start difference. First operand 4513 states and 6639 transitions. Second operand 27 states. [2021-01-06 21:00:48,500 WARN L197 SmtUtils]: Spent 531.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 87 [2021-01-06 21:00:49,134 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 24 [2021-01-06 21:00:49,369 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 28 [2021-01-06 21:00:49,677 WARN L197 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 36 [2021-01-06 21:00:49,982 WARN L197 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 37 [2021-01-06 21:00:50,232 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 36 [2021-01-06 21:00:50,764 WARN L197 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 41 [2021-01-06 21:00:51,160 WARN L197 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2021-01-06 21:00:51,638 WARN L197 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 63 [2021-01-06 21:00:52,178 WARN L197 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2021-01-06 21:00:52,850 WARN L197 SmtUtils]: Spent 531.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2021-01-06 21:00:53,605 WARN L197 SmtUtils]: Spent 637.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 92 [2021-01-06 21:00:54,490 WARN L197 SmtUtils]: Spent 738.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 106 [2021-01-06 21:00:54,896 WARN L197 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2021-01-06 21:00:55,350 WARN L197 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2021-01-06 21:00:55,704 WARN L197 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2021-01-06 21:00:56,038 WARN L197 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2021-01-06 21:00:56,308 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2021-01-06 21:00:56,526 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 27 [2021-01-06 21:00:56,763 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 24 [2021-01-06 21:00:57,138 WARN L197 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2021-01-06 21:00:57,454 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 24 [2021-01-06 21:00:57,767 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2021-01-06 21:00:58,893 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 35 [2021-01-06 21:00:59,525 WARN L197 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2021-01-06 21:00:59,849 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 35 [2021-01-06 21:01:00,520 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 31 [2021-01-06 21:01:06,543 WARN L197 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 36 [2021-01-06 21:01:09,613 WARN L197 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 41 [2021-01-06 21:01:17,041 WARN L197 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 32 [2021-01-06 21:01:29,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:01:29,571 INFO L93 Difference]: Finished difference Result 57148 states and 84583 transitions. [2021-01-06 21:01:29,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-01-06 21:01:29,574 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 71 [2021-01-06 21:01:29,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:01:29,657 INFO L225 Difference]: With dead ends: 57148 [2021-01-06 21:01:29,657 INFO L226 Difference]: Without dead ends: 55356 [2021-01-06 21:01:29,673 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 784 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=670, Invalid=3490, Unknown=0, NotChecked=0, Total=4160 [2021-01-06 21:01:29,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55356 states. [2021-01-06 21:01:31,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55356 to 4523. [2021-01-06 21:01:31,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4523 states. [2021-01-06 21:01:31,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4523 states to 4523 states and 6651 transitions. [2021-01-06 21:01:31,886 INFO L78 Accepts]: Start accepts. Automaton has 4523 states and 6651 transitions. Word has length 71 [2021-01-06 21:01:31,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:01:31,886 INFO L481 AbstractCegarLoop]: Abstraction has 4523 states and 6651 transitions. [2021-01-06 21:01:31,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2021-01-06 21:01:31,887 INFO L276 IsEmpty]: Start isEmpty. Operand 4523 states and 6651 transitions. [2021-01-06 21:01:31,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-01-06 21:01:31,888 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:01:31,888 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 21:01:31,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-01-06 21:01:31,888 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:01:31,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:01:31,889 INFO L82 PathProgramCache]: Analyzing trace with hash -78323220, now seen corresponding path program 1 times [2021-01-06 21:01:31,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:01:31,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749554511] [2021-01-06 21:01:31,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:01:31,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:01:32,442 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 18 [2021-01-06 21:01:32,669 WARN L197 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 25 [2021-01-06 21:01:33,113 WARN L197 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 30 [2021-01-06 21:01:33,271 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2021-01-06 21:01:33,595 WARN L197 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 35 [2021-01-06 21:01:33,794 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 24 [2021-01-06 21:01:33,990 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 24 [2021-01-06 21:01:34,289 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 21:01:34,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749554511] [2021-01-06 21:01:34,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:01:34,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-01-06 21:01:34,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97983300] [2021-01-06 21:01:34,290 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-06 21:01:34,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:01:34,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-06 21:01:34,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2021-01-06 21:01:34,291 INFO L87 Difference]: Start difference. First operand 4523 states and 6651 transitions. Second operand 17 states. [2021-01-06 21:01:34,570 WARN L197 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 31 [2021-01-06 21:01:34,824 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 19 [2021-01-06 21:01:35,070 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 22 [2021-01-06 21:01:35,331 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 23 [2021-01-06 21:01:35,736 WARN L197 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2021-01-06 21:01:36,218 WARN L197 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2021-01-06 21:01:36,615 WARN L197 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2021-01-06 21:01:37,295 WARN L197 SmtUtils]: Spent 590.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2021-01-06 21:01:37,808 WARN L197 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2021-01-06 21:01:38,309 WARN L197 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2021-01-06 21:01:38,643 WARN L197 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2021-01-06 21:01:39,024 WARN L197 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2021-01-06 21:01:39,434 WARN L197 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2021-01-06 21:01:39,826 WARN L197 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2021-01-06 21:01:40,159 WARN L197 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2021-01-06 21:01:40,586 WARN L197 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2021-01-06 21:01:41,259 WARN L197 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 27 [2021-01-06 21:01:42,759 WARN L197 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2021-01-06 21:01:51,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:01:51,434 INFO L93 Difference]: Finished difference Result 17787 states and 26288 transitions. [2021-01-06 21:01:51,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-01-06 21:01:51,438 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 72 [2021-01-06 21:01:51,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:01:51,455 INFO L225 Difference]: With dead ends: 17787 [2021-01-06 21:01:51,455 INFO L226 Difference]: Without dead ends: 15963 [2021-01-06 21:01:51,460 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=293, Invalid=967, Unknown=0, NotChecked=0, Total=1260 [2021-01-06 21:01:51,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15963 states. [2021-01-06 21:01:53,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15963 to 4508. [2021-01-06 21:01:53,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4508 states. [2021-01-06 21:01:53,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4508 states to 4508 states and 6629 transitions. [2021-01-06 21:01:53,550 INFO L78 Accepts]: Start accepts. Automaton has 4508 states and 6629 transitions. Word has length 72 [2021-01-06 21:01:53,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:01:53,551 INFO L481 AbstractCegarLoop]: Abstraction has 4508 states and 6629 transitions. [2021-01-06 21:01:53,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-01-06 21:01:53,551 INFO L276 IsEmpty]: Start isEmpty. Operand 4508 states and 6629 transitions. [2021-01-06 21:01:53,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-01-06 21:01:53,552 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:01:53,552 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 21:01:53,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-01-06 21:01:53,553 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:01:53,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:01:53,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1932679112, now seen corresponding path program 1 times [2021-01-06 21:01:53,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:01:53,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933146235] [2021-01-06 21:01:53,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:01:53,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:01:53,931 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2021-01-06 21:01:54,223 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2021-01-06 21:01:54,408 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 14 [2021-01-06 21:01:54,566 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 14 [2021-01-06 21:01:54,727 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 21:01:54,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933146235] [2021-01-06 21:01:54,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:01:54,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-01-06 21:01:54,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562598794] [2021-01-06 21:01:54,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-06 21:01:54,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:01:54,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-06 21:01:54,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-01-06 21:01:54,730 INFO L87 Difference]: Start difference. First operand 4508 states and 6629 transitions. Second operand 13 states. [2021-01-06 21:01:54,884 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 19 [2021-01-06 21:01:55,313 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 21 [2021-01-06 21:01:55,659 WARN L197 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 36 [2021-01-06 21:01:56,208 WARN L197 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 45 [2021-01-06 21:01:56,608 WARN L197 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 45 [2021-01-06 21:01:56,767 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-01-06 21:01:56,967 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2021-01-06 21:01:57,388 WARN L197 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 41 [2021-01-06 21:01:58,073 WARN L197 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 39 [2021-01-06 21:02:06,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:02:06,637 INFO L93 Difference]: Finished difference Result 19343 states and 28596 transitions. [2021-01-06 21:02:06,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-01-06 21:02:06,639 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 72 [2021-01-06 21:02:06,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:02:06,662 INFO L225 Difference]: With dead ends: 19343 [2021-01-06 21:02:06,663 INFO L226 Difference]: Without dead ends: 17515 [2021-01-06 21:02:06,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=145, Invalid=455, Unknown=0, NotChecked=0, Total=600 [2021-01-06 21:02:06,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17515 states. [2021-01-06 21:02:08,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17515 to 4471. [2021-01-06 21:02:08,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4471 states. [2021-01-06 21:02:08,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4471 states to 4471 states and 6578 transitions. [2021-01-06 21:02:08,893 INFO L78 Accepts]: Start accepts. Automaton has 4471 states and 6578 transitions. Word has length 72 [2021-01-06 21:02:08,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:02:08,894 INFO L481 AbstractCegarLoop]: Abstraction has 4471 states and 6578 transitions. [2021-01-06 21:02:08,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-01-06 21:02:08,894 INFO L276 IsEmpty]: Start isEmpty. Operand 4471 states and 6578 transitions. [2021-01-06 21:02:08,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-01-06 21:02:08,895 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:02:08,895 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 21:02:08,895 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-01-06 21:02:08,895 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:02:08,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:02:08,895 INFO L82 PathProgramCache]: Analyzing trace with hash -4822265, now seen corresponding path program 1 times [2021-01-06 21:02:08,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:02:08,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068040516] [2021-01-06 21:02:08,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:02:08,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:02:09,273 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 24 [2021-01-06 21:02:09,422 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 20 [2021-01-06 21:02:09,580 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 22 [2021-01-06 21:02:09,854 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-01-06 21:02:10,360 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 21:02:10,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068040516] [2021-01-06 21:02:10,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:02:10,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-01-06 21:02:10,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162814916] [2021-01-06 21:02:10,362 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-01-06 21:02:10,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:02:10,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-01-06 21:02:10,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2021-01-06 21:02:10,363 INFO L87 Difference]: Start difference. First operand 4471 states and 6578 transitions. Second operand 16 states. [2021-01-06 21:02:10,546 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 23 [2021-01-06 21:02:10,943 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 24 [2021-01-06 21:02:11,280 WARN L197 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 23 [2021-01-06 21:02:11,591 WARN L197 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 30 [2021-01-06 21:02:12,235 WARN L197 SmtUtils]: Spent 576.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2021-01-06 21:02:13,177 WARN L197 SmtUtils]: Spent 890.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 62 [2021-01-06 21:02:13,573 WARN L197 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 36 [2021-01-06 21:02:13,942 WARN L197 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 36 [2021-01-06 21:02:14,258 WARN L197 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2021-01-06 21:02:14,884 WARN L197 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 29 [2021-01-06 21:02:16,216 WARN L197 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 36