/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 20:38:10,380 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 20:38:10,382 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 20:38:10,425 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 20:38:10,426 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 20:38:10,430 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 20:38:10,434 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 20:38:10,442 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 20:38:10,446 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 20:38:10,452 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 20:38:10,453 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 20:38:10,455 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 20:38:10,458 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 20:38:10,461 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 20:38:10,463 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 20:38:10,465 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 20:38:10,466 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 20:38:10,468 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 20:38:10,478 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 20:38:10,481 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 20:38:10,485 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 20:38:10,487 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 20:38:10,489 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 20:38:10,492 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 20:38:10,501 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-06 20:38:10,501 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-06 20:38:10,501 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-06 20:38:10,507 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-06 20:38:10,508 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-06 20:38:10,509 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-06 20:38:10,509 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 20:38:10,510 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 20:38:10,512 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 20:38:10,513 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 20:38:10,514 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 20:38:10,514 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 20:38:10,515 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 20:38:10,523 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 20:38:10,523 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 20:38:10,525 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 20:38:10,526 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 20:38:10,527 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 20:38:10,582 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 20:38:10,583 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 20:38:10,584 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 20:38:10,584 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 20:38:10,585 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 20:38:10,585 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 20:38:10,585 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 20:38:10,585 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 20:38:10,586 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 20:38:10,586 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 20:38:10,586 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 20:38:10,586 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 20:38:10,587 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 20:38:10,587 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 20:38:10,587 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 20:38:10,587 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 20:38:10,588 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 20:38:10,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 20:38:10,588 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 20:38:10,588 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 20:38:10,589 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 20:38:10,589 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 20:38:10,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 20:38:10,589 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 20:38:10,590 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 20:38:10,590 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 20:38:10,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 20:38:11,026 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 20:38:11,030 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 20:38:11,032 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 20:38:11,033 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 20:38:11,034 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2021-01-06 20:38:11,132 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/0238d13b2/1409cd1f246041e19a0827f66fbecb81/FLAG32fad802e [2021-01-06 20:38:11,894 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 20:38:11,895 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2021-01-06 20:38:11,907 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/0238d13b2/1409cd1f246041e19a0827f66fbecb81/FLAG32fad802e [2021-01-06 20:38:12,237 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/0238d13b2/1409cd1f246041e19a0827f66fbecb81 [2021-01-06 20:38:12,240 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 20:38:12,243 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 20:38:12,245 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 20:38:12,245 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 20:38:12,249 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 20:38:12,249 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 08:38:12" (1/1) ... [2021-01-06 20:38:12,251 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5726f878 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:38:12, skipping insertion in model container [2021-01-06 20:38:12,251 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 08:38:12" (1/1) ... [2021-01-06 20:38:12,262 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 20:38:12,300 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_19141~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~0,] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~0,] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4__m4~0,] left hand side expression in assignment: lhs: VariableLHS[~node4__m4~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_19276~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_1~0,] left hand side expression in assignment: lhs: VariableLHS[~assert__arg~0,] [2021-01-06 20:38:12,542 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[4973,4986] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_1~0,] [2021-01-06 20:38:12,622 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 20:38:12,650 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_19141~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~0,] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~0,] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4__m4~0,] left hand side expression in assignment: lhs: VariableLHS[~node4__m4~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_19276~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_1~0,] left hand side expression in assignment: lhs: VariableLHS[~assert__arg~0,] [2021-01-06 20:38:12,748 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[4973,4986] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_1~0,] [2021-01-06 20:38:12,804 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 20:38:12,845 INFO L208 MainTranslator]: Completed translation [2021-01-06 20:38:12,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:38:12 WrapperNode [2021-01-06 20:38:12,846 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 20:38:12,849 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 20:38:12,849 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 20:38:12,849 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 20:38:12,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:38:12" (1/1) ... [2021-01-06 20:38:12,896 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:38:12" (1/1) ... [2021-01-06 20:38:12,969 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 20:38:12,970 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 20:38:12,970 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 20:38:12,970 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 20:38:12,984 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:38:12" (1/1) ... [2021-01-06 20:38:12,984 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:38:12" (1/1) ... [2021-01-06 20:38:12,987 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:38:12" (1/1) ... [2021-01-06 20:38:12,987 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:38:12" (1/1) ... [2021-01-06 20:38:12,995 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:38:12" (1/1) ... [2021-01-06 20:38:13,000 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:38:12" (1/1) ... [2021-01-06 20:38:13,003 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:38:12" (1/1) ... [2021-01-06 20:38:13,007 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 20:38:13,008 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 20:38:13,008 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 20:38:13,009 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 20:38:13,010 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:38:12" (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 20:38:13,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 20:38:13,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 20:38:13,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 20:38:13,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 20:38:14,089 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 20:38:14,089 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-01-06 20:38:14,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 08:38:14 BoogieIcfgContainer [2021-01-06 20:38:14,093 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 20:38:14,095 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 20:38:14,095 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 20:38:14,101 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 20:38:14,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 08:38:12" (1/3) ... [2021-01-06 20:38:14,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3486b9bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 08:38:14, skipping insertion in model container [2021-01-06 20:38:14,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:38:12" (2/3) ... [2021-01-06 20:38:14,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3486b9bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 08:38:14, skipping insertion in model container [2021-01-06 20:38:14,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 08:38:14" (3/3) ... [2021-01-06 20:38:14,105 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2021-01-06 20:38:14,114 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 20:38:14,122 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 20:38:14,149 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 20:38:14,207 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 20:38:14,207 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 20:38:14,208 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 20:38:14,208 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 20:38:14,208 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 20:38:14,208 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 20:38:14,208 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 20:38:14,208 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 20:38:14,231 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states. [2021-01-06 20:38:14,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-01-06 20:38:14,242 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:38:14,243 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:38:14,243 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:38:14,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:38:14,250 INFO L82 PathProgramCache]: Analyzing trace with hash 2117585175, now seen corresponding path program 1 times [2021-01-06 20:38:14,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:38:14,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008260443] [2021-01-06 20:38:14,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:38:14,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:38:14,681 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 20:38:14,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008260443] [2021-01-06 20:38:14,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:38:14,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:38:14,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492400429] [2021-01-06 20:38:14,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:38:14,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:38:14,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:38:14,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:38:14,712 INFO L87 Difference]: Start difference. First operand 112 states. Second operand 3 states. [2021-01-06 20:38:14,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:38:14,814 INFO L93 Difference]: Finished difference Result 266 states and 425 transitions. [2021-01-06 20:38:14,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:38:14,816 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49 [2021-01-06 20:38:14,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:38:14,857 INFO L225 Difference]: With dead ends: 266 [2021-01-06 20:38:14,857 INFO L226 Difference]: Without dead ends: 175 [2021-01-06 20:38:14,866 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 20:38:14,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-01-06 20:38:14,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 173. [2021-01-06 20:38:14,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2021-01-06 20:38:14,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 259 transitions. [2021-01-06 20:38:14,995 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 259 transitions. Word has length 49 [2021-01-06 20:38:14,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:38:14,996 INFO L481 AbstractCegarLoop]: Abstraction has 173 states and 259 transitions. [2021-01-06 20:38:14,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:38:14,996 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 259 transitions. [2021-01-06 20:38:15,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-01-06 20:38:15,002 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:38:15,002 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:38:15,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 20:38:15,005 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:38:15,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:38:15,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1419109229, now seen corresponding path program 1 times [2021-01-06 20:38:15,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:38:15,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287626914] [2021-01-06 20:38:15,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:38:15,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:38:15,173 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 20:38:15,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287626914] [2021-01-06 20:38:15,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:38:15,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:38:15,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832060777] [2021-01-06 20:38:15,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:38:15,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:38:15,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:38:15,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:38:15,183 INFO L87 Difference]: Start difference. First operand 173 states and 259 transitions. Second operand 3 states. [2021-01-06 20:38:15,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:38:15,300 INFO L93 Difference]: Finished difference Result 433 states and 671 transitions. [2021-01-06 20:38:15,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:38:15,301 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2021-01-06 20:38:15,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:38:15,308 INFO L225 Difference]: With dead ends: 433 [2021-01-06 20:38:15,309 INFO L226 Difference]: Without dead ends: 287 [2021-01-06 20:38:15,313 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 20:38:15,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-01-06 20:38:15,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 285. [2021-01-06 20:38:15,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2021-01-06 20:38:15,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 436 transitions. [2021-01-06 20:38:15,375 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 436 transitions. Word has length 50 [2021-01-06 20:38:15,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:38:15,376 INFO L481 AbstractCegarLoop]: Abstraction has 285 states and 436 transitions. [2021-01-06 20:38:15,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:38:15,376 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 436 transitions. [2021-01-06 20:38:15,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-01-06 20:38:15,378 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:38:15,378 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:38:15,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 20:38:15,379 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:38:15,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:38:15,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1570665396, now seen corresponding path program 1 times [2021-01-06 20:38:15,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:38:15,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873683749] [2021-01-06 20:38:15,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:38:15,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:38:15,534 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 20:38:15,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873683749] [2021-01-06 20:38:15,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:38:15,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:38:15,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437329375] [2021-01-06 20:38:15,538 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:38:15,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:38:15,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:38:15,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:38:15,540 INFO L87 Difference]: Start difference. First operand 285 states and 436 transitions. Second operand 3 states. [2021-01-06 20:38:15,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:38:15,641 INFO L93 Difference]: Finished difference Result 737 states and 1150 transitions. [2021-01-06 20:38:15,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:38:15,642 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2021-01-06 20:38:15,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:38:15,646 INFO L225 Difference]: With dead ends: 737 [2021-01-06 20:38:15,646 INFO L226 Difference]: Without dead ends: 479 [2021-01-06 20:38:15,652 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 20:38:15,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2021-01-06 20:38:15,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 477. [2021-01-06 20:38:15,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477 states. [2021-01-06 20:38:15,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 736 transitions. [2021-01-06 20:38:15,713 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 736 transitions. Word has length 51 [2021-01-06 20:38:15,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:38:15,721 INFO L481 AbstractCegarLoop]: Abstraction has 477 states and 736 transitions. [2021-01-06 20:38:15,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:38:15,722 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 736 transitions. [2021-01-06 20:38:15,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-01-06 20:38:15,725 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:38:15,725 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:38:15,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 20:38:15,725 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:38:15,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:38:15,729 INFO L82 PathProgramCache]: Analyzing trace with hash 1205622842, now seen corresponding path program 1 times [2021-01-06 20:38:15,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:38:15,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301508932] [2021-01-06 20:38:15,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:38:15,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:38:16,045 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 20:38:16,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301508932] [2021-01-06 20:38:16,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:38:16,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 20:38:16,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292823617] [2021-01-06 20:38:16,048 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 20:38:16,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:38:16,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 20:38:16,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-01-06 20:38:16,052 INFO L87 Difference]: Start difference. First operand 477 states and 736 transitions. Second operand 6 states. [2021-01-06 20:38:16,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:38:16,314 INFO L93 Difference]: Finished difference Result 2033 states and 3172 transitions. [2021-01-06 20:38:16,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 20:38:16,314 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2021-01-06 20:38:16,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:38:16,325 INFO L225 Difference]: With dead ends: 2033 [2021-01-06 20:38:16,325 INFO L226 Difference]: Without dead ends: 1583 [2021-01-06 20:38:16,327 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-01-06 20:38:16,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1583 states. [2021-01-06 20:38:16,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1583 to 1577. [2021-01-06 20:38:16,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2021-01-06 20:38:16,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 2452 transitions. [2021-01-06 20:38:16,458 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 2452 transitions. Word has length 52 [2021-01-06 20:38:16,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:38:16,458 INFO L481 AbstractCegarLoop]: Abstraction has 1577 states and 2452 transitions. [2021-01-06 20:38:16,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 20:38:16,459 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 2452 transitions. [2021-01-06 20:38:16,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-01-06 20:38:16,461 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:38:16,461 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] [2021-01-06 20:38:16,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 20:38:16,461 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:38:16,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:38:16,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1744489678, now seen corresponding path program 1 times [2021-01-06 20:38:16,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:38:16,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095579009] [2021-01-06 20:38:16,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:38:16,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:38:16,513 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 20:38:16,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095579009] [2021-01-06 20:38:16,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:38:16,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:38:16,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728434800] [2021-01-06 20:38:16,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:38:16,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:38:16,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:38:16,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:38:16,516 INFO L87 Difference]: Start difference. First operand 1577 states and 2452 transitions. Second operand 3 states. [2021-01-06 20:38:16,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:38:16,736 INFO L93 Difference]: Finished difference Result 4141 states and 6438 transitions. [2021-01-06 20:38:16,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:38:16,739 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2021-01-06 20:38:16,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:38:16,753 INFO L225 Difference]: With dead ends: 4141 [2021-01-06 20:38:16,753 INFO L226 Difference]: Without dead ends: 2591 [2021-01-06 20:38:16,757 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 20:38:16,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2591 states. [2021-01-06 20:38:16,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2591 to 2589. [2021-01-06 20:38:16,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2589 states. [2021-01-06 20:38:16,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2589 states to 2589 states and 3980 transitions. [2021-01-06 20:38:16,981 INFO L78 Accepts]: Start accepts. Automaton has 2589 states and 3980 transitions. Word has length 53 [2021-01-06 20:38:16,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:38:16,981 INFO L481 AbstractCegarLoop]: Abstraction has 2589 states and 3980 transitions. [2021-01-06 20:38:16,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:38:16,981 INFO L276 IsEmpty]: Start isEmpty. Operand 2589 states and 3980 transitions. [2021-01-06 20:38:16,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-01-06 20:38:16,983 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:38:16,983 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:38:16,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-06 20:38:16,983 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:38:16,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:38:16,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1689386392, now seen corresponding path program 1 times [2021-01-06 20:38:16,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:38:16,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406129232] [2021-01-06 20:38:16,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:38:17,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:38:17,090 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 20:38:17,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406129232] [2021-01-06 20:38:17,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:38:17,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 20:38:17,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36419383] [2021-01-06 20:38:17,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 20:38:17,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:38:17,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 20:38:17,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 20:38:17,093 INFO L87 Difference]: Start difference. First operand 2589 states and 3980 transitions. Second operand 6 states. [2021-01-06 20:38:17,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:38:17,811 INFO L93 Difference]: Finished difference Result 11799 states and 18193 transitions. [2021-01-06 20:38:17,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 20:38:17,812 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2021-01-06 20:38:17,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:38:17,863 INFO L225 Difference]: With dead ends: 11799 [2021-01-06 20:38:17,863 INFO L226 Difference]: Without dead ends: 9237 [2021-01-06 20:38:17,872 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-01-06 20:38:17,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9237 states. [2021-01-06 20:38:18,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9237 to 5149. [2021-01-06 20:38:18,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5149 states. [2021-01-06 20:38:18,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5149 states to 5149 states and 7804 transitions. [2021-01-06 20:38:18,370 INFO L78 Accepts]: Start accepts. Automaton has 5149 states and 7804 transitions. Word has length 54 [2021-01-06 20:38:18,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:38:18,370 INFO L481 AbstractCegarLoop]: Abstraction has 5149 states and 7804 transitions. [2021-01-06 20:38:18,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 20:38:18,370 INFO L276 IsEmpty]: Start isEmpty. Operand 5149 states and 7804 transitions. [2021-01-06 20:38:18,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-01-06 20:38:18,371 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:38:18,372 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:38:18,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-06 20:38:18,372 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:38:18,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:38:18,378 INFO L82 PathProgramCache]: Analyzing trace with hash -850826877, now seen corresponding path program 1 times [2021-01-06 20:38:18,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:38:18,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948671313] [2021-01-06 20:38:18,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:38:18,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:38:18,507 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 20:38:18,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948671313] [2021-01-06 20:38:18,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:38:18,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 20:38:18,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181437500] [2021-01-06 20:38:18,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 20:38:18,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:38:18,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 20:38:18,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 20:38:18,512 INFO L87 Difference]: Start difference. First operand 5149 states and 7804 transitions. Second operand 5 states. [2021-01-06 20:38:19,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:38:19,379 INFO L93 Difference]: Finished difference Result 10527 states and 15837 transitions. [2021-01-06 20:38:19,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 20:38:19,384 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2021-01-06 20:38:19,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:38:19,464 INFO L225 Difference]: With dead ends: 10527 [2021-01-06 20:38:19,465 INFO L226 Difference]: Without dead ends: 10525 [2021-01-06 20:38:19,470 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-01-06 20:38:19,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10525 states. [2021-01-06 20:38:20,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10525 to 5405. [2021-01-06 20:38:20,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5405 states. [2021-01-06 20:38:20,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5405 states to 5405 states and 8060 transitions. [2021-01-06 20:38:20,135 INFO L78 Accepts]: Start accepts. Automaton has 5405 states and 8060 transitions. Word has length 55 [2021-01-06 20:38:20,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:38:20,137 INFO L481 AbstractCegarLoop]: Abstraction has 5405 states and 8060 transitions. [2021-01-06 20:38:20,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 20:38:20,137 INFO L276 IsEmpty]: Start isEmpty. Operand 5405 states and 8060 transitions. [2021-01-06 20:38:20,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-01-06 20:38:20,139 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:38:20,140 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:38:20,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-06 20:38:20,140 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:38:20,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:38:20,141 INFO L82 PathProgramCache]: Analyzing trace with hash -595256360, now seen corresponding path program 1 times [2021-01-06 20:38:20,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:38:20,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510961246] [2021-01-06 20:38:20,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:38:20,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:38:20,197 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 20:38:20,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510961246] [2021-01-06 20:38:20,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:38:20,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:38:20,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915640702] [2021-01-06 20:38:20,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:38:20,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:38:20,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:38:20,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:38:20,200 INFO L87 Difference]: Start difference. First operand 5405 states and 8060 transitions. Second operand 3 states. [2021-01-06 20:38:20,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:38:20,841 INFO L93 Difference]: Finished difference Result 13259 states and 19788 transitions. [2021-01-06 20:38:20,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:38:20,842 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2021-01-06 20:38:20,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:38:20,861 INFO L225 Difference]: With dead ends: 13259 [2021-01-06 20:38:20,862 INFO L226 Difference]: Without dead ends: 7881 [2021-01-06 20:38:20,918 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 20:38:20,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7881 states. [2021-01-06 20:38:21,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7881 to 7823. [2021-01-06 20:38:21,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7823 states. [2021-01-06 20:38:21,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7823 states to 7823 states and 11586 transitions. [2021-01-06 20:38:21,612 INFO L78 Accepts]: Start accepts. Automaton has 7823 states and 11586 transitions. Word has length 56 [2021-01-06 20:38:21,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:38:21,612 INFO L481 AbstractCegarLoop]: Abstraction has 7823 states and 11586 transitions. [2021-01-06 20:38:21,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:38:21,613 INFO L276 IsEmpty]: Start isEmpty. Operand 7823 states and 11586 transitions. [2021-01-06 20:38:21,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-01-06 20:38:21,619 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:38:21,621 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:38:21,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-06 20:38:21,621 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:38:21,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:38:21,622 INFO L82 PathProgramCache]: Analyzing trace with hash -264442661, now seen corresponding path program 1 times [2021-01-06 20:38:21,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:38:21,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102445535] [2021-01-06 20:38:21,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:38:21,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:38:21,963 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:38:21,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102445535] [2021-01-06 20:38:21,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497585130] [2021-01-06 20:38:21,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 20:38:22,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:38:22,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 4 conjunts are in the unsatisfiable core [2021-01-06 20:38:22,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 20:38:22,478 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-06 20:38:22,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 20:38:22,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4] total 12 [2021-01-06 20:38:22,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146638739] [2021-01-06 20:38:22,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-06 20:38:22,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:38:22,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-06 20:38:22,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-01-06 20:38:22,481 INFO L87 Difference]: Start difference. First operand 7823 states and 11586 transitions. Second operand 12 states. [2021-01-06 20:38:39,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:38:39,514 INFO L93 Difference]: Finished difference Result 112903 states and 164848 transitions. [2021-01-06 20:38:39,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-01-06 20:38:39,514 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 79 [2021-01-06 20:38:39,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:38:39,824 INFO L225 Difference]: With dead ends: 112903 [2021-01-06 20:38:39,825 INFO L226 Difference]: Without dead ends: 105109 [2021-01-06 20:38:39,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3778 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1653, Invalid=7853, Unknown=0, NotChecked=0, Total=9506 [2021-01-06 20:38:39,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105109 states. [2021-01-06 20:38:43,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105109 to 28707. [2021-01-06 20:38:43,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28707 states. [2021-01-06 20:38:43,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28707 states to 28707 states and 41326 transitions. [2021-01-06 20:38:43,859 INFO L78 Accepts]: Start accepts. Automaton has 28707 states and 41326 transitions. Word has length 79 [2021-01-06 20:38:43,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:38:43,859 INFO L481 AbstractCegarLoop]: Abstraction has 28707 states and 41326 transitions. [2021-01-06 20:38:43,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-06 20:38:43,859 INFO L276 IsEmpty]: Start isEmpty. Operand 28707 states and 41326 transitions. [2021-01-06 20:38:43,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-01-06 20:38:43,869 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:38:43,869 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:38:44,083 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-01-06 20:38:44,084 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:38:44,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:38:44,086 INFO L82 PathProgramCache]: Analyzing trace with hash 2142394861, now seen corresponding path program 1 times [2021-01-06 20:38:44,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:38:44,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318072998] [2021-01-06 20:38:44,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:38:44,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:38:44,162 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:38:44,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318072998] [2021-01-06 20:38:44,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:38:44,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:38:44,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63371306] [2021-01-06 20:38:44,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:38:44,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:38:44,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:38:44,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:38:44,165 INFO L87 Difference]: Start difference. First operand 28707 states and 41326 transitions. Second operand 3 states. [2021-01-06 20:38:48,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:38:48,231 INFO L93 Difference]: Finished difference Result 67304 states and 97202 transitions. [2021-01-06 20:38:48,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:38:48,232 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2021-01-06 20:38:48,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:38:48,319 INFO L225 Difference]: With dead ends: 67304 [2021-01-06 20:38:48,320 INFO L226 Difference]: Without dead ends: 44118 [2021-01-06 20:38:48,352 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:38:48,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44118 states. [2021-01-06 20:38:52,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44118 to 44116. [2021-01-06 20:38:52,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44116 states. [2021-01-06 20:38:52,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44116 states to 44116 states and 63104 transitions. [2021-01-06 20:38:52,528 INFO L78 Accepts]: Start accepts. Automaton has 44116 states and 63104 transitions. Word has length 79 [2021-01-06 20:38:52,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:38:52,528 INFO L481 AbstractCegarLoop]: Abstraction has 44116 states and 63104 transitions. [2021-01-06 20:38:52,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:38:52,528 INFO L276 IsEmpty]: Start isEmpty. Operand 44116 states and 63104 transitions. [2021-01-06 20:38:52,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-01-06 20:38:52,541 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:38:52,541 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:38:52,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-01-06 20:38:52,541 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:38:52,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:38:52,542 INFO L82 PathProgramCache]: Analyzing trace with hash -1807198399, now seen corresponding path program 1 times [2021-01-06 20:38:52,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:38:52,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088971282] [2021-01-06 20:38:52,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:38:52,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:38:52,593 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:38:52,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088971282] [2021-01-06 20:38:52,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:38:52,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:38:52,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981373132] [2021-01-06 20:38:52,595 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:38:52,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:38:52,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:38:52,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:38:52,596 INFO L87 Difference]: Start difference. First operand 44116 states and 63104 transitions. Second operand 3 states. [2021-01-06 20:38:58,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:38:58,130 INFO L93 Difference]: Finished difference Result 90088 states and 128859 transitions. [2021-01-06 20:38:58,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:38:58,131 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2021-01-06 20:38:58,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:38:58,221 INFO L225 Difference]: With dead ends: 90088 [2021-01-06 20:38:58,221 INFO L226 Difference]: Without dead ends: 63382 [2021-01-06 20:38:58,263 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 20:38:58,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63382 states. [2021-01-06 20:39:04,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63382 to 58420. [2021-01-06 20:39:04,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58420 states. [2021-01-06 20:39:04,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58420 states to 58420 states and 82705 transitions. [2021-01-06 20:39:04,088 INFO L78 Accepts]: Start accepts. Automaton has 58420 states and 82705 transitions. Word has length 79 [2021-01-06 20:39:04,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:39:04,088 INFO L481 AbstractCegarLoop]: Abstraction has 58420 states and 82705 transitions. [2021-01-06 20:39:04,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:39:04,089 INFO L276 IsEmpty]: Start isEmpty. Operand 58420 states and 82705 transitions. [2021-01-06 20:39:04,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-01-06 20:39:04,104 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:39:04,104 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:39:04,104 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-01-06 20:39:04,104 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:39:04,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:39:04,105 INFO L82 PathProgramCache]: Analyzing trace with hash 611086120, now seen corresponding path program 1 times [2021-01-06 20:39:04,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:39:04,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457671469] [2021-01-06 20:39:04,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:39:04,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:39:04,154 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:39:04,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457671469] [2021-01-06 20:39:04,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:39:04,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:39:04,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811655012] [2021-01-06 20:39:04,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:39:04,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:39:04,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:39:04,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:39:04,157 INFO L87 Difference]: Start difference. First operand 58420 states and 82705 transitions. Second operand 3 states. [2021-01-06 20:39:10,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:39:10,501 INFO L93 Difference]: Finished difference Result 93972 states and 132386 transitions. [2021-01-06 20:39:10,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:39:10,502 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2021-01-06 20:39:10,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:39:10,572 INFO L225 Difference]: With dead ends: 93972 [2021-01-06 20:39:10,572 INFO L226 Difference]: Without dead ends: 61947 [2021-01-06 20:39:10,597 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 20:39:10,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61947 states. [2021-01-06 20:39:16,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61947 to 59144. [2021-01-06 20:39:16,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59144 states. [2021-01-06 20:39:16,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59144 states to 59144 states and 82228 transitions. [2021-01-06 20:39:16,392 INFO L78 Accepts]: Start accepts. Automaton has 59144 states and 82228 transitions. Word has length 79 [2021-01-06 20:39:16,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:39:16,392 INFO L481 AbstractCegarLoop]: Abstraction has 59144 states and 82228 transitions. [2021-01-06 20:39:16,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:39:16,393 INFO L276 IsEmpty]: Start isEmpty. Operand 59144 states and 82228 transitions. [2021-01-06 20:39:16,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-01-06 20:39:16,402 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:39:16,403 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:39:16,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-01-06 20:39:16,403 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:39:16,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:39:16,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1536259716, now seen corresponding path program 1 times [2021-01-06 20:39:16,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:39:16,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348678161] [2021-01-06 20:39:16,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:39:16,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:39:16,531 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-06 20:39:16,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348678161] [2021-01-06 20:39:16,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:39:16,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 20:39:16,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424950855] [2021-01-06 20:39:16,538 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 20:39:16,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:39:16,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 20:39:16,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 20:39:16,539 INFO L87 Difference]: Start difference. First operand 59144 states and 82228 transitions. Second operand 6 states. [2021-01-06 20:39:26,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:39:26,345 INFO L93 Difference]: Finished difference Result 128822 states and 181079 transitions. [2021-01-06 20:39:26,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 20:39:26,346 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2021-01-06 20:39:26,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:39:26,478 INFO L225 Difference]: With dead ends: 128822 [2021-01-06 20:39:26,479 INFO L226 Difference]: Without dead ends: 101015 [2021-01-06 20:39:26,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-01-06 20:39:26,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101015 states. [2021-01-06 20:39:35,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101015 to 79697. [2021-01-06 20:39:35,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79697 states. [2021-01-06 20:39:35,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79697 states to 79697 states and 110745 transitions. [2021-01-06 20:39:35,158 INFO L78 Accepts]: Start accepts. Automaton has 79697 states and 110745 transitions. Word has length 79 [2021-01-06 20:39:35,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:39:35,158 INFO L481 AbstractCegarLoop]: Abstraction has 79697 states and 110745 transitions. [2021-01-06 20:39:35,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 20:39:35,159 INFO L276 IsEmpty]: Start isEmpty. Operand 79697 states and 110745 transitions. [2021-01-06 20:39:35,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-01-06 20:39:35,169 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:39:35,169 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:39:35,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-01-06 20:39:35,169 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:39:35,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:39:35,170 INFO L82 PathProgramCache]: Analyzing trace with hash -259731985, now seen corresponding path program 1 times [2021-01-06 20:39:35,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:39:35,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801860146] [2021-01-06 20:39:35,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:39:35,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:39:35,237 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-01-06 20:39:35,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801860146] [2021-01-06 20:39:35,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:39:35,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 20:39:35,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724091005] [2021-01-06 20:39:35,239 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 20:39:35,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:39:35,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 20:39:35,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 20:39:35,240 INFO L87 Difference]: Start difference. First operand 79697 states and 110745 transitions. Second operand 5 states. [2021-01-06 20:39:48,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:39:48,278 INFO L93 Difference]: Finished difference Result 200082 states and 277196 transitions. [2021-01-06 20:39:48,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 20:39:48,279 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2021-01-06 20:39:48,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:39:48,463 INFO L225 Difference]: With dead ends: 200082 [2021-01-06 20:39:48,463 INFO L226 Difference]: Without dead ends: 120509 [2021-01-06 20:39:48,530 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 20:39:48,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120509 states. [2021-01-06 20:40:01,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120509 to 119976. [2021-01-06 20:40:01,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119976 states. [2021-01-06 20:40:01,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119976 states to 119976 states and 165118 transitions. [2021-01-06 20:40:01,825 INFO L78 Accepts]: Start accepts. Automaton has 119976 states and 165118 transitions. Word has length 79 [2021-01-06 20:40:01,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:40:01,825 INFO L481 AbstractCegarLoop]: Abstraction has 119976 states and 165118 transitions. [2021-01-06 20:40:01,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 20:40:01,825 INFO L276 IsEmpty]: Start isEmpty. Operand 119976 states and 165118 transitions. [2021-01-06 20:40:01,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-01-06 20:40:01,839 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:40:01,840 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:40:01,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-01-06 20:40:01,840 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:40:01,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:40:01,841 INFO L82 PathProgramCache]: Analyzing trace with hash -1327277398, now seen corresponding path program 1 times [2021-01-06 20:40:01,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:40:01,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241587055] [2021-01-06 20:40:01,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:40:01,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:40:01,970 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-01-06 20:40:01,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241587055] [2021-01-06 20:40:01,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:40:01,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 20:40:01,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249373203] [2021-01-06 20:40:01,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 20:40:01,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:40:01,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 20:40:01,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-01-06 20:40:01,972 INFO L87 Difference]: Start difference. First operand 119976 states and 165118 transitions. Second operand 6 states. [2021-01-06 20:40:22,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:40:22,192 INFO L93 Difference]: Finished difference Result 207040 states and 287957 transitions. [2021-01-06 20:40:22,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 20:40:22,192 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2021-01-06 20:40:22,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:40:22,486 INFO L225 Difference]: With dead ends: 207040 [2021-01-06 20:40:22,486 INFO L226 Difference]: Without dead ends: 180875 [2021-01-06 20:40:22,544 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 20:40:22,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180875 states. [2021-01-06 20:40:38,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180875 to 145392. [2021-01-06 20:40:38,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145392 states. [2021-01-06 20:40:39,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145392 states to 145392 states and 200384 transitions. [2021-01-06 20:40:39,071 INFO L78 Accepts]: Start accepts. Automaton has 145392 states and 200384 transitions. Word has length 79 [2021-01-06 20:40:39,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:40:39,072 INFO L481 AbstractCegarLoop]: Abstraction has 145392 states and 200384 transitions. [2021-01-06 20:40:39,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 20:40:39,072 INFO L276 IsEmpty]: Start isEmpty. Operand 145392 states and 200384 transitions. [2021-01-06 20:40:39,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-01-06 20:40:39,084 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:40:39,085 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:40:39,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-01-06 20:40:39,085 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:40:39,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:40:39,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1216138536, now seen corresponding path program 1 times [2021-01-06 20:40:39,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:40:39,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445928465] [2021-01-06 20:40:39,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:40:39,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:40:39,459 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-06 20:40:39,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445928465] [2021-01-06 20:40:39,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:40:39,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 20:40:39,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798139667] [2021-01-06 20:40:39,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 20:40:39,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:40:39,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 20:40:39,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-01-06 20:40:39,462 INFO L87 Difference]: Start difference. First operand 145392 states and 200384 transitions. Second operand 6 states.