/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.BOUNDED-8.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 10:43:56,276 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 10:43:56,279 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 10:43:56,328 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 10:43:56,328 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 10:43:56,332 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 10:43:56,336 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 10:43:56,341 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 10:43:56,345 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 10:43:56,353 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 10:43:56,358 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 10:43:56,360 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 10:43:56,360 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 10:43:56,364 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 10:43:56,366 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 10:43:56,368 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 10:43:56,369 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 10:43:56,373 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 10:43:56,381 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 10:43:56,386 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 10:43:56,388 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 10:43:56,391 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 10:43:56,393 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 10:43:56,396 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 10:43:56,410 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 10:43:56,410 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 10:43:56,410 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 10:43:56,411 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 10:43:56,412 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 10:43:56,413 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 10:43:56,414 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 10:43:56,414 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 10:43:56,415 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 10:43:56,416 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 10:43:56,417 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 10:43:56,418 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 10:43:56,418 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 10:43:56,419 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 10:43:56,419 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 10:43:56,420 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 10:43:56,420 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 10:43:56,422 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 10:43:56,450 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 10:43:56,451 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 10:43:56,452 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 10:43:56,453 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 10:43:56,453 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 10:43:56,453 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 10:43:56,453 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 10:43:56,453 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 10:43:56,454 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 10:43:56,454 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 10:43:56,454 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 10:43:56,454 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 10:43:56,455 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 10:43:56,455 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 10:43:56,455 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 10:43:56,455 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 10:43:56,456 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 10:43:56,456 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 10:43:56,456 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 10:43:56,456 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 10:43:56,457 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 10:43:56,457 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 10:43:56,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 10:43:56,457 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 10:43:56,457 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 10:43:56,458 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 10:43:56,822 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 10:43:56,856 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 10:43:56,859 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 10:43:56,861 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 10:43:56,862 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 10:43:56,863 INFO L432 ainManager$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.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-12-23 10:43:56,953 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/9d17cabb9/691d107c8578468b90be01ecd72755a0/FLAGbbecca4f7 [2020-12-23 10:43:57,669 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 10:43:57,670 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-12-23 10:43:57,689 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/9d17cabb9/691d107c8578468b90be01ecd72755a0/FLAGbbecca4f7 [2020-12-23 10:43:57,942 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/9d17cabb9/691d107c8578468b90be01ecd72755a0 [2020-12-23 10:43:57,945 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 10:43:57,948 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 10:43:57,950 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 10:43:57,950 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 10:43:57,954 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 10:43:57,955 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 10:43:57" (1/1) ... [2020-12-23 10:43:57,956 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21fd7ef3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:43:57, skipping insertion in model container [2020-12-23 10:43:57,956 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 10:43:57" (1/1) ... [2020-12-23 10:43:57,965 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 10:43:58,002 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_19350~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~0,] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~0,] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4__m4~0,] left hand side expression in assignment: lhs: VariableLHS[~node4__m4~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_19485~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_1~0,] left hand side expression in assignment: lhs: VariableLHS[~assert__arg~0,] [2020-12-23 10:43:58,238 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.BOUNDED-8.pals.c.v+cfa-reducer.c[4935,4948] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_19572~0,GLOBAL] [2020-12-23 10:43:58,316 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 10:43:58,351 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_19350~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~0,] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~0,] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4__m4~0,] left hand side expression in assignment: lhs: VariableLHS[~node4__m4~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_19485~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_1~0,] left hand side expression in assignment: lhs: VariableLHS[~assert__arg~0,] [2020-12-23 10:43:58,461 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.BOUNDED-8.pals.c.v+cfa-reducer.c[4935,4948] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_19572~0,GLOBAL] [2020-12-23 10:43:58,520 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 10:43:58,547 INFO L208 MainTranslator]: Completed translation [2020-12-23 10:43:58,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:43:58 WrapperNode [2020-12-23 10:43:58,548 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 10:43:58,549 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 10:43:58,550 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 10:43:58,550 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 10:43:58,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:43:58" (1/1) ... [2020-12-23 10:43:58,574 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:43:58" (1/1) ... [2020-12-23 10:43:58,620 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 10:43:58,621 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 10:43:58,621 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 10:43:58,621 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 10:43:58,636 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:43:58" (1/1) ... [2020-12-23 10:43:58,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:43:58" (1/1) ... [2020-12-23 10:43:58,640 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:43:58" (1/1) ... [2020-12-23 10:43:58,641 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:43:58" (1/1) ... [2020-12-23 10:43:58,651 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:43:58" (1/1) ... [2020-12-23 10:43:58,658 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:43:58" (1/1) ... [2020-12-23 10:43:58,662 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:43:58" (1/1) ... [2020-12-23 10:43:58,668 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 10:43:58,669 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 10:43:58,669 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 10:43:58,669 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 10:43:58,670 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:43:58" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 10:43:58,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 10:43:58,798 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 10:43:58,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 10:43:58,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 10:43:59,659 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 10:43:59,659 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-23 10:43:59,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 10:43:59 BoogieIcfgContainer [2020-12-23 10:43:59,661 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 10:43:59,663 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 10:43:59,663 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 10:43:59,667 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 10:43:59,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 10:43:57" (1/3) ... [2020-12-23 10:43:59,669 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@332e53a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 10:43:59, skipping insertion in model container [2020-12-23 10:43:59,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:43:58" (2/3) ... [2020-12-23 10:43:59,669 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@332e53a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 10:43:59, skipping insertion in model container [2020-12-23 10:43:59,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 10:43:59" (3/3) ... [2020-12-23 10:43:59,671 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-12-23 10:43:59,678 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 10:43:59,683 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 10:43:59,702 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 10:43:59,730 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 10:43:59,730 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 10:43:59,731 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 10:43:59,731 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 10:43:59,731 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 10:43:59,731 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 10:43:59,731 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 10:43:59,731 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 10:43:59,750 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states. [2020-12-23 10:43:59,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-23 10:43:59,759 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:43:59,760 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] [2020-12-23 10:43:59,760 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:43:59,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:43:59,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1289871298, now seen corresponding path program 1 times [2020-12-23 10:43:59,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:43:59,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908157679] [2020-12-23 10:43:59,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:43:59,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:44:00,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:44:00,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908157679] [2020-12-23 10:44:00,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:44:00,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:44:00,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993365350] [2020-12-23 10:44:00,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:44:00,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:44:00,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:44:00,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:44:00,171 INFO L87 Difference]: Start difference. First operand 110 states. Second operand 3 states. [2020-12-23 10:44:00,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:44:00,309 INFO L93 Difference]: Finished difference Result 260 states and 419 transitions. [2020-12-23 10:44:00,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:44:00,311 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2020-12-23 10:44:00,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:44:00,343 INFO L225 Difference]: With dead ends: 260 [2020-12-23 10:44:00,343 INFO L226 Difference]: Without dead ends: 171 [2020-12-23 10:44:00,347 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:44:00,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-12-23 10:44:00,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 169. [2020-12-23 10:44:00,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-12-23 10:44:00,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 253 transitions. [2020-12-23 10:44:00,407 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 253 transitions. Word has length 48 [2020-12-23 10:44:00,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:44:00,408 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 253 transitions. [2020-12-23 10:44:00,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:44:00,408 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 253 transitions. [2020-12-23 10:44:00,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-23 10:44:00,411 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:44:00,411 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] [2020-12-23 10:44:00,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 10:44:00,411 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:44:00,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:44:00,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1971653998, now seen corresponding path program 1 times [2020-12-23 10:44:00,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:44:00,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539475224] [2020-12-23 10:44:00,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:44:00,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:44:00,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:44:00,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539475224] [2020-12-23 10:44:00,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:44:00,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:44:00,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88399140] [2020-12-23 10:44:00,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:44:00,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:44:00,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:44:00,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:44:00,596 INFO L87 Difference]: Start difference. First operand 169 states and 253 transitions. Second operand 3 states. [2020-12-23 10:44:00,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:44:00,668 INFO L93 Difference]: Finished difference Result 421 states and 653 transitions. [2020-12-23 10:44:00,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:44:00,669 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49 [2020-12-23 10:44:00,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:44:00,673 INFO L225 Difference]: With dead ends: 421 [2020-12-23 10:44:00,673 INFO L226 Difference]: Without dead ends: 279 [2020-12-23 10:44:00,675 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:44:00,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-12-23 10:44:00,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 277. [2020-12-23 10:44:00,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-12-23 10:44:00,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 424 transitions. [2020-12-23 10:44:00,714 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 424 transitions. Word has length 49 [2020-12-23 10:44:00,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:44:00,714 INFO L481 AbstractCegarLoop]: Abstraction has 277 states and 424 transitions. [2020-12-23 10:44:00,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:44:00,714 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 424 transitions. [2020-12-23 10:44:00,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-23 10:44:00,716 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:44:00,716 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] [2020-12-23 10:44:00,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 10:44:00,717 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:44:00,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:44:00,718 INFO L82 PathProgramCache]: Analyzing trace with hash 663495285, now seen corresponding path program 1 times [2020-12-23 10:44:00,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:44:00,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842155425] [2020-12-23 10:44:00,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:44:00,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:44:00,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:44:00,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842155425] [2020-12-23 10:44:00,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:44:00,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:44:00,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563823076] [2020-12-23 10:44:00,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:44:00,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:44:00,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:44:00,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:44:00,898 INFO L87 Difference]: Start difference. First operand 277 states and 424 transitions. Second operand 3 states. [2020-12-23 10:44:00,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:44:00,987 INFO L93 Difference]: Finished difference Result 713 states and 1114 transitions. [2020-12-23 10:44:00,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:44:00,987 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2020-12-23 10:44:00,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:44:00,992 INFO L225 Difference]: With dead ends: 713 [2020-12-23 10:44:00,992 INFO L226 Difference]: Without dead ends: 463 [2020-12-23 10:44:00,994 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:44:00,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2020-12-23 10:44:01,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 461. [2020-12-23 10:44:01,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2020-12-23 10:44:01,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 712 transitions. [2020-12-23 10:44:01,042 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 712 transitions. Word has length 50 [2020-12-23 10:44:01,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:44:01,042 INFO L481 AbstractCegarLoop]: Abstraction has 461 states and 712 transitions. [2020-12-23 10:44:01,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:44:01,042 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 712 transitions. [2020-12-23 10:44:01,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-23 10:44:01,044 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:44:01,044 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] [2020-12-23 10:44:01,045 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 10:44:01,045 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:44:01,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:44:01,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1706895887, now seen corresponding path program 1 times [2020-12-23 10:44:01,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:44:01,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083244465] [2020-12-23 10:44:01,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:44:01,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:44:01,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:44:01,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083244465] [2020-12-23 10:44:01,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:44:01,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:44:01,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303878782] [2020-12-23 10:44:01,117 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:44:01,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:44:01,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:44:01,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:44:01,118 INFO L87 Difference]: Start difference. First operand 461 states and 712 transitions. Second operand 3 states. [2020-12-23 10:44:01,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:44:01,178 INFO L93 Difference]: Finished difference Result 1201 states and 1874 transitions. [2020-12-23 10:44:01,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:44:01,178 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-12-23 10:44:01,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:44:01,183 INFO L225 Difference]: With dead ends: 1201 [2020-12-23 10:44:01,184 INFO L226 Difference]: Without dead ends: 767 [2020-12-23 10:44:01,186 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:44:01,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2020-12-23 10:44:01,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 765. [2020-12-23 10:44:01,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 765 states. [2020-12-23 10:44:01,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 1180 transitions. [2020-12-23 10:44:01,267 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 1180 transitions. Word has length 51 [2020-12-23 10:44:01,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:44:01,268 INFO L481 AbstractCegarLoop]: Abstraction has 765 states and 1180 transitions. [2020-12-23 10:44:01,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:44:01,268 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 1180 transitions. [2020-12-23 10:44:01,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-23 10:44:01,272 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:44:01,272 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] [2020-12-23 10:44:01,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 10:44:01,273 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:44:01,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:44:01,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1133800764, now seen corresponding path program 1 times [2020-12-23 10:44:01,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:44:01,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147304205] [2020-12-23 10:44:01,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:44:01,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:44:01,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:44:01,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147304205] [2020-12-23 10:44:01,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:44:01,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 10:44:01,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48619889] [2020-12-23 10:44:01,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 10:44:01,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:44:01,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 10:44:01,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-23 10:44:01,566 INFO L87 Difference]: Start difference. First operand 765 states and 1180 transitions. Second operand 6 states. [2020-12-23 10:44:01,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:44:01,846 INFO L93 Difference]: Finished difference Result 3269 states and 5056 transitions. [2020-12-23 10:44:01,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 10:44:01,847 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-12-23 10:44:01,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:44:01,862 INFO L225 Difference]: With dead ends: 3269 [2020-12-23 10:44:01,862 INFO L226 Difference]: Without dead ends: 2531 [2020-12-23 10:44:01,865 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 [2020-12-23 10:44:01,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2531 states. [2020-12-23 10:44:02,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2531 to 2525. [2020-12-23 10:44:02,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2525 states. [2020-12-23 10:44:02,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2525 states to 2525 states and 3884 transitions. [2020-12-23 10:44:02,080 INFO L78 Accepts]: Start accepts. Automaton has 2525 states and 3884 transitions. Word has length 52 [2020-12-23 10:44:02,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:44:02,081 INFO L481 AbstractCegarLoop]: Abstraction has 2525 states and 3884 transitions. [2020-12-23 10:44:02,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 10:44:02,081 INFO L276 IsEmpty]: Start isEmpty. Operand 2525 states and 3884 transitions. [2020-12-23 10:44:02,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-23 10:44:02,083 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:44:02,083 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] [2020-12-23 10:44:02,083 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 10:44:02,083 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:44:02,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:44:02,084 INFO L82 PathProgramCache]: Analyzing trace with hash -2135389787, now seen corresponding path program 1 times [2020-12-23 10:44:02,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:44:02,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175009641] [2020-12-23 10:44:02,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:44:02,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:44:02,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:44:02,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175009641] [2020-12-23 10:44:02,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:44:02,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 10:44:02,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576885440] [2020-12-23 10:44:02,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 10:44:02,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:44:02,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 10:44:02,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 10:44:02,148 INFO L87 Difference]: Start difference. First operand 2525 states and 3884 transitions. Second operand 5 states. [2020-12-23 10:44:02,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:44:02,748 INFO L93 Difference]: Finished difference Result 7521 states and 11598 transitions. [2020-12-23 10:44:02,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 10:44:02,748 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 54 [2020-12-23 10:44:02,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:44:02,776 INFO L225 Difference]: With dead ends: 7521 [2020-12-23 10:44:02,776 INFO L226 Difference]: Without dead ends: 5023 [2020-12-23 10:44:02,781 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 10:44:02,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5023 states. [2020-12-23 10:44:03,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5023 to 5021. [2020-12-23 10:44:03,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5021 states. [2020-12-23 10:44:03,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5021 states to 5021 states and 7684 transitions. [2020-12-23 10:44:03,279 INFO L78 Accepts]: Start accepts. Automaton has 5021 states and 7684 transitions. Word has length 54 [2020-12-23 10:44:03,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:44:03,279 INFO L481 AbstractCegarLoop]: Abstraction has 5021 states and 7684 transitions. [2020-12-23 10:44:03,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 10:44:03,280 INFO L276 IsEmpty]: Start isEmpty. Operand 5021 states and 7684 transitions. [2020-12-23 10:44:03,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-23 10:44:03,281 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:44:03,281 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] [2020-12-23 10:44:03,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 10:44:03,282 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:44:03,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:44:03,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1662484042, now seen corresponding path program 1 times [2020-12-23 10:44:03,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:44:03,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002327942] [2020-12-23 10:44:03,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:44:03,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:44:03,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:44:03,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002327942] [2020-12-23 10:44:03,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:44:03,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 10:44:03,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58765615] [2020-12-23 10:44:03,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 10:44:03,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:44:03,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 10:44:03,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 10:44:03,384 INFO L87 Difference]: Start difference. First operand 5021 states and 7684 transitions. Second operand 6 states. [2020-12-23 10:44:04,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:44:04,817 INFO L93 Difference]: Finished difference Result 22983 states and 35225 transitions. [2020-12-23 10:44:04,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 10:44:04,818 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-12-23 10:44:04,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:44:04,915 INFO L225 Difference]: With dead ends: 22983 [2020-12-23 10:44:04,915 INFO L226 Difference]: Without dead ends: 17989 [2020-12-23 10:44:04,927 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 [2020-12-23 10:44:04,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17989 states. [2020-12-23 10:44:05,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17989 to 10013. [2020-12-23 10:44:05,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10013 states. [2020-12-23 10:44:05,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10013 states to 10013 states and 15084 transitions. [2020-12-23 10:44:05,994 INFO L78 Accepts]: Start accepts. Automaton has 10013 states and 15084 transitions. Word has length 54 [2020-12-23 10:44:05,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:44:05,995 INFO L481 AbstractCegarLoop]: Abstraction has 10013 states and 15084 transitions. [2020-12-23 10:44:05,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 10:44:05,995 INFO L276 IsEmpty]: Start isEmpty. Operand 10013 states and 15084 transitions. [2020-12-23 10:44:05,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-23 10:44:05,997 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:44:05,998 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] [2020-12-23 10:44:05,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 10:44:05,998 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:44:05,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:44:05,999 INFO L82 PathProgramCache]: Analyzing trace with hash -22058530, now seen corresponding path program 1 times [2020-12-23 10:44:05,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:44:05,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634361175] [2020-12-23 10:44:05,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:44:06,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:44:06,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:44:06,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634361175] [2020-12-23 10:44:06,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:44:06,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 10:44:06,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877325577] [2020-12-23 10:44:06,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 10:44:06,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:44:06,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 10:44:06,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 10:44:06,122 INFO L87 Difference]: Start difference. First operand 10013 states and 15084 transitions. Second operand 5 states. [2020-12-23 10:44:07,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:44:07,662 INFO L93 Difference]: Finished difference Result 20511 states and 30653 transitions. [2020-12-23 10:44:07,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 10:44:07,662 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-12-23 10:44:07,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:44:07,721 INFO L225 Difference]: With dead ends: 20511 [2020-12-23 10:44:07,721 INFO L226 Difference]: Without dead ends: 20509 [2020-12-23 10:44:07,730 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-23 10:44:07,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20509 states. [2020-12-23 10:44:08,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20509 to 10525. [2020-12-23 10:44:08,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10525 states. [2020-12-23 10:44:08,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10525 states to 10525 states and 15596 transitions. [2020-12-23 10:44:08,829 INFO L78 Accepts]: Start accepts. Automaton has 10525 states and 15596 transitions. Word has length 55 [2020-12-23 10:44:08,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:44:08,830 INFO L481 AbstractCegarLoop]: Abstraction has 10525 states and 15596 transitions. [2020-12-23 10:44:08,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 10:44:08,831 INFO L276 IsEmpty]: Start isEmpty. Operand 10525 states and 15596 transitions. [2020-12-23 10:44:08,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-23 10:44:08,831 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:44:08,832 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] [2020-12-23 10:44:08,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 10:44:08,832 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:44:08,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:44:08,833 INFO L82 PathProgramCache]: Analyzing trace with hash -673241382, now seen corresponding path program 1 times [2020-12-23 10:44:08,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:44:08,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833913076] [2020-12-23 10:44:08,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:44:08,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:44:08,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:44:08,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833913076] [2020-12-23 10:44:08,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:44:08,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:44:08,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910716225] [2020-12-23 10:44:08,881 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:44:08,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:44:08,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:44:08,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:44:08,882 INFO L87 Difference]: Start difference. First operand 10525 states and 15596 transitions. Second operand 3 states. [2020-12-23 10:44:09,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:44:09,885 INFO L93 Difference]: Finished difference Result 23387 states and 34588 transitions. [2020-12-23 10:44:09,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:44:09,886 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2020-12-23 10:44:09,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:44:09,917 INFO L225 Difference]: With dead ends: 23387 [2020-12-23 10:44:09,917 INFO L226 Difference]: Without dead ends: 12889 [2020-12-23 10:44:09,933 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:44:09,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12889 states. [2020-12-23 10:44:10,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12889 to 12887. [2020-12-23 10:44:10,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12887 states. [2020-12-23 10:44:10,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12887 states to 12887 states and 18962 transitions. [2020-12-23 10:44:10,993 INFO L78 Accepts]: Start accepts. Automaton has 12887 states and 18962 transitions. Word has length 56 [2020-12-23 10:44:10,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:44:10,993 INFO L481 AbstractCegarLoop]: Abstraction has 12887 states and 18962 transitions. [2020-12-23 10:44:10,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:44:10,993 INFO L276 IsEmpty]: Start isEmpty. Operand 12887 states and 18962 transitions. [2020-12-23 10:44:11,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-23 10:44:11,001 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:44:11,001 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] [2020-12-23 10:44:11,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 10:44:11,002 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:44:11,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:44:11,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1821600213, now seen corresponding path program 1 times [2020-12-23 10:44:11,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:44:11,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745538022] [2020-12-23 10:44:11,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:44:11,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:44:11,137 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 10:44:11,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745538022] [2020-12-23 10:44:11,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567044911] [2020-12-23 10:44:11,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 10:44:11,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:44:11,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-23 10:44:11,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 10:44:11,492 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 10:44:11,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 10:44:11,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 7 [2020-12-23 10:44:11,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893423733] [2020-12-23 10:44:11,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 10:44:11,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:44:11,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 10:44:11,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 10:44:11,496 INFO L87 Difference]: Start difference. First operand 12887 states and 18962 transitions. Second operand 7 states. [2020-12-23 10:44:13,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:44:13,781 INFO L93 Difference]: Finished difference Result 33579 states and 49469 transitions. [2020-12-23 10:44:13,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 10:44:13,782 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 77 [2020-12-23 10:44:13,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:44:13,865 INFO L225 Difference]: With dead ends: 33579 [2020-12-23 10:44:13,865 INFO L226 Difference]: Without dead ends: 23081 [2020-12-23 10:44:13,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 10:44:13,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23081 states. [2020-12-23 10:44:15,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23081 to 22047. [2020-12-23 10:44:15,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22047 states. [2020-12-23 10:44:15,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22047 states to 22047 states and 32162 transitions. [2020-12-23 10:44:15,638 INFO L78 Accepts]: Start accepts. Automaton has 22047 states and 32162 transitions. Word has length 77 [2020-12-23 10:44:15,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:44:15,639 INFO L481 AbstractCegarLoop]: Abstraction has 22047 states and 32162 transitions. [2020-12-23 10:44:15,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 10:44:15,639 INFO L276 IsEmpty]: Start isEmpty. Operand 22047 states and 32162 transitions. [2020-12-23 10:44:15,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-23 10:44:15,646 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:44:15,646 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:44:15,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-23 10:44:15,861 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:44:15,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:44:15,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1365606455, now seen corresponding path program 1 times [2020-12-23 10:44:15,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:44:15,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125781289] [2020-12-23 10:44:15,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:44:15,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:44:15,922 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:44:15,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125781289] [2020-12-23 10:44:15,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:44:15,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:44:15,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986022949] [2020-12-23 10:44:15,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:44:15,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:44:15,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:44:15,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:44:15,925 INFO L87 Difference]: Start difference. First operand 22047 states and 32162 transitions. Second operand 3 states. [2020-12-23 10:44:18,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:44:18,354 INFO L93 Difference]: Finished difference Result 52696 states and 76724 transitions. [2020-12-23 10:44:18,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:44:18,354 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2020-12-23 10:44:18,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:44:18,434 INFO L225 Difference]: With dead ends: 52696 [2020-12-23 10:44:18,434 INFO L226 Difference]: Without dead ends: 34862 [2020-12-23 10:44:18,463 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:44:18,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34862 states. [2020-12-23 10:44:20,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34862 to 33436. [2020-12-23 10:44:20,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33436 states. [2020-12-23 10:44:20,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33436 states to 33436 states and 48200 transitions. [2020-12-23 10:44:20,750 INFO L78 Accepts]: Start accepts. Automaton has 33436 states and 48200 transitions. Word has length 78 [2020-12-23 10:44:20,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:44:20,750 INFO L481 AbstractCegarLoop]: Abstraction has 33436 states and 48200 transitions. [2020-12-23 10:44:20,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:44:20,750 INFO L276 IsEmpty]: Start isEmpty. Operand 33436 states and 48200 transitions. [2020-12-23 10:44:20,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-23 10:44:20,760 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:44:20,760 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:44:20,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 10:44:20,760 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:44:20,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:44:20,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1977851660, now seen corresponding path program 1 times [2020-12-23 10:44:20,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:44:20,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663390186] [2020-12-23 10:44:20,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:44:20,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:44:20,823 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:44:20,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663390186] [2020-12-23 10:44:20,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:44:20,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:44:20,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603726876] [2020-12-23 10:44:20,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:44:20,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:44:20,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:44:20,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:44:20,825 INFO L87 Difference]: Start difference. First operand 33436 states and 48200 transitions. Second operand 3 states. [2020-12-23 10:44:24,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:44:24,088 INFO L93 Difference]: Finished difference Result 70654 states and 101391 transitions. [2020-12-23 10:44:24,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:44:24,089 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2020-12-23 10:44:24,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:44:24,165 INFO L225 Difference]: With dead ends: 70654 [2020-12-23 10:44:24,165 INFO L226 Difference]: Without dead ends: 47596 [2020-12-23 10:44:24,204 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:44:24,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47596 states. [2020-12-23 10:44:27,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47596 to 45522. [2020-12-23 10:44:27,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45522 states. [2020-12-23 10:44:27,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45522 states to 45522 states and 64685 transitions. [2020-12-23 10:44:27,577 INFO L78 Accepts]: Start accepts. Automaton has 45522 states and 64685 transitions. Word has length 78 [2020-12-23 10:44:27,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:44:27,577 INFO L481 AbstractCegarLoop]: Abstraction has 45522 states and 64685 transitions. [2020-12-23 10:44:27,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:44:27,577 INFO L276 IsEmpty]: Start isEmpty. Operand 45522 states and 64685 transitions. [2020-12-23 10:44:27,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-23 10:44:27,588 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:44:27,588 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:44:27,589 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-23 10:44:27,589 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:44:27,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:44:27,589 INFO L82 PathProgramCache]: Analyzing trace with hash 440432859, now seen corresponding path program 1 times [2020-12-23 10:44:27,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:44:27,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687356812] [2020-12-23 10:44:27,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:44:27,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:44:27,642 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:44:27,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687356812] [2020-12-23 10:44:27,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:44:27,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:44:27,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487271642] [2020-12-23 10:44:27,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:44:27,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:44:27,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:44:27,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:44:27,644 INFO L87 Difference]: Start difference. First operand 45522 states and 64685 transitions. Second operand 3 states. [2020-12-23 10:44:31,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:44:31,280 INFO L93 Difference]: Finished difference Result 75065 states and 106010 transitions. [2020-12-23 10:44:31,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:44:31,281 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2020-12-23 10:44:31,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:44:31,335 INFO L225 Difference]: With dead ends: 75065 [2020-12-23 10:44:31,335 INFO L226 Difference]: Without dead ends: 47573 [2020-12-23 10:44:31,356 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:44:31,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47573 states. [2020-12-23 10:44:34,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47573 to 45737. [2020-12-23 10:44:34,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45737 states. [2020-12-23 10:44:34,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45737 states to 45737 states and 63951 transitions. [2020-12-23 10:44:34,459 INFO L78 Accepts]: Start accepts. Automaton has 45737 states and 63951 transitions. Word has length 78 [2020-12-23 10:44:34,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:44:34,460 INFO L481 AbstractCegarLoop]: Abstraction has 45737 states and 63951 transitions. [2020-12-23 10:44:34,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:44:34,460 INFO L276 IsEmpty]: Start isEmpty. Operand 45737 states and 63951 transitions. [2020-12-23 10:44:34,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-23 10:44:34,469 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:44:34,470 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:44:34,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-23 10:44:34,470 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:44:34,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:44:34,470 INFO L82 PathProgramCache]: Analyzing trace with hash -739881820, now seen corresponding path program 1 times [2020-12-23 10:44:34,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:44:34,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457405977] [2020-12-23 10:44:34,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:44:34,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:44:34,585 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 10:44:34,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457405977] [2020-12-23 10:44:34,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:44:34,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 10:44:34,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054479398] [2020-12-23 10:44:34,587 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 10:44:34,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:44:34,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 10:44:34,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 10:44:34,588 INFO L87 Difference]: Start difference. First operand 45737 states and 63951 transitions. Second operand 6 states. [2020-12-23 10:44:41,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:44:41,172 INFO L93 Difference]: Finished difference Result 101399 states and 143542 transitions. [2020-12-23 10:44:41,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 10:44:41,173 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-12-23 10:44:41,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:44:41,278 INFO L225 Difference]: With dead ends: 101399 [2020-12-23 10:44:41,278 INFO L226 Difference]: Without dead ends: 87112 [2020-12-23 10:44:41,306 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-23 10:44:41,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87112 states. [2020-12-23 10:44:46,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87112 to 58561. [2020-12-23 10:44:46,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58561 states. [2020-12-23 10:44:46,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58561 states to 58561 states and 81905 transitions. [2020-12-23 10:44:46,103 INFO L78 Accepts]: Start accepts. Automaton has 58561 states and 81905 transitions. Word has length 78 [2020-12-23 10:44:46,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:44:46,103 INFO L481 AbstractCegarLoop]: Abstraction has 58561 states and 81905 transitions. [2020-12-23 10:44:46,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 10:44:46,103 INFO L276 IsEmpty]: Start isEmpty. Operand 58561 states and 81905 transitions. [2020-12-23 10:44:46,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-23 10:44:46,112 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:44:46,112 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:44:46,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-23 10:44:46,113 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:44:46,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:44:46,113 INFO L82 PathProgramCache]: Analyzing trace with hash -542796544, now seen corresponding path program 1 times [2020-12-23 10:44:46,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:44:46,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964615399] [2020-12-23 10:44:46,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:44:46,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:44:46,217 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-23 10:44:46,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964615399] [2020-12-23 10:44:46,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:44:46,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 10:44:46,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395691359] [2020-12-23 10:44:46,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 10:44:46,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:44:46,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 10:44:46,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 10:44:46,222 INFO L87 Difference]: Start difference. First operand 58561 states and 81905 transitions. Second operand 6 states. [2020-12-23 10:44:53,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:44:53,939 INFO L93 Difference]: Finished difference Result 120652 states and 170529 transitions. [2020-12-23 10:44:53,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 10:44:53,940 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-12-23 10:44:53,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:44:54,041 INFO L225 Difference]: With dead ends: 120652 [2020-12-23 10:44:54,042 INFO L226 Difference]: Without dead ends: 99913 [2020-12-23 10:44:54,067 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 [2020-12-23 10:44:54,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99913 states. [2020-12-23 10:45:00,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99913 to 76833. [2020-12-23 10:45:00,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76833 states. [2020-12-23 10:45:00,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76833 states to 76833 states and 107391 transitions. [2020-12-23 10:45:00,740 INFO L78 Accepts]: Start accepts. Automaton has 76833 states and 107391 transitions. Word has length 78 [2020-12-23 10:45:00,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:45:00,741 INFO L481 AbstractCegarLoop]: Abstraction has 76833 states and 107391 transitions. [2020-12-23 10:45:00,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 10:45:00,741 INFO L276 IsEmpty]: Start isEmpty. Operand 76833 states and 107391 transitions. [2020-12-23 10:45:00,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-23 10:45:00,755 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:45:00,755 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:45:00,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-23 10:45:00,756 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:45:00,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:45:00,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1309904988, now seen corresponding path program 1 times [2020-12-23 10:45:00,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:45:00,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588832086] [2020-12-23 10:45:00,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:45:00,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:45:00,848 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-23 10:45:00,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588832086] [2020-12-23 10:45:00,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:45:00,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 10:45:00,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832242196] [2020-12-23 10:45:00,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 10:45:00,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:45:00,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 10:45:00,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-23 10:45:00,851 INFO L87 Difference]: Start difference. First operand 76833 states and 107391 transitions. Second operand 6 states. [2020-12-23 10:45:17,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:45:17,055 INFO L93 Difference]: Finished difference Result 263319 states and 366830 transitions. [2020-12-23 10:45:17,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 10:45:17,055 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-12-23 10:45:17,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:45:17,502 INFO L225 Difference]: With dead ends: 263319 [2020-12-23 10:45:17,502 INFO L226 Difference]: Without dead ends: 186593 [2020-12-23 10:45:17,574 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-23 10:45:17,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186593 states. [2020-12-23 10:45:32,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186593 to 183290. [2020-12-23 10:45:32,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183290 states. [2020-12-23 10:45:33,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183290 states to 183290 states and 254490 transitions. [2020-12-23 10:45:33,322 INFO L78 Accepts]: Start accepts. Automaton has 183290 states and 254490 transitions. Word has length 78 [2020-12-23 10:45:33,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:45:33,322 INFO L481 AbstractCegarLoop]: Abstraction has 183290 states and 254490 transitions. [2020-12-23 10:45:33,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 10:45:33,322 INFO L276 IsEmpty]: Start isEmpty. Operand 183290 states and 254490 transitions. [2020-12-23 10:45:33,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-23 10:45:33,331 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:45:33,332 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:45:33,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-23 10:45:33,332 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:45:33,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:45:33,332 INFO L82 PathProgramCache]: Analyzing trace with hash 209052831, now seen corresponding path program 1 times [2020-12-23 10:45:33,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:45:33,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133547191] [2020-12-23 10:45:33,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:45:33,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:45:33,820 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-23 10:45:33,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133547191] [2020-12-23 10:45:33,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:45:33,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 10:45:33,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844207709] [2020-12-23 10:45:33,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 10:45:33,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:45:33,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 10:45:33,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-23 10:45:33,824 INFO L87 Difference]: Start difference. First operand 183290 states and 254490 transitions. Second operand 6 states. [2020-12-23 10:45:55,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:45:55,237 INFO L93 Difference]: Finished difference Result 298470 states and 418161 transitions. [2020-12-23 10:45:55,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 10:45:55,238 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-12-23 10:45:55,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:45:55,845 INFO L225 Difference]: With dead ends: 298470 [2020-12-23 10:45:55,845 INFO L226 Difference]: Without dead ends: 275956 [2020-12-23 10:45:55,913 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 [2020-12-23 10:45:56,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275956 states.