/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.5.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 21:04:18,269 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 21:04:18,275 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 21:04:18,342 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 21:04:18,342 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 21:04:18,348 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 21:04:18,352 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 21:04:18,359 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 21:04:18,364 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 21:04:18,370 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 21:04:18,375 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 21:04:18,377 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 21:04:18,377 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 21:04:18,381 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 21:04:18,383 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 21:04:18,398 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 21:04:18,400 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 21:04:18,403 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 21:04:18,411 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 21:04:18,419 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 21:04:18,421 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 21:04:18,424 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 21:04:18,426 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 21:04:18,429 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 21:04:18,440 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-06 21:04:18,441 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-06 21:04:18,441 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-06 21:04:18,443 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-06 21:04:18,444 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-06 21:04:18,445 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-06 21:04:18,445 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 21:04:18,446 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 21:04:18,448 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 21:04:18,449 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 21:04:18,451 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 21:04:18,451 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 21:04:18,452 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 21:04:18,459 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 21:04:18,459 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 21:04:18,461 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 21:04:18,461 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 21:04:18,467 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 21:04:18,500 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 21:04:18,500 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 21:04:18,502 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 21:04:18,502 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 21:04:18,503 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 21:04:18,503 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 21:04:18,503 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 21:04:18,503 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 21:04:18,504 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 21:04:18,504 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 21:04:18,504 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 21:04:18,504 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 21:04:18,505 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 21:04:18,505 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 21:04:18,505 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 21:04:18,505 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 21:04:18,506 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 21:04:18,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 21:04:18,506 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 21:04:18,506 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 21:04:18,507 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 21:04:18,507 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 21:04:18,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 21:04:18,507 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 21:04:18,507 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 21:04:18,508 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 21:04:18,928 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 21:04:18,955 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 21:04:18,962 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 21:04:18,963 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 21:04:18,964 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 21:04:18,965 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2021-01-06 21:04:19,060 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/bf7a9a5d9/ac9c16859e8b484cbacdad6d5c5f5a45/FLAG17d5beba0 [2021-01-06 21:04:19,930 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 21:04:19,931 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2021-01-06 21:04:19,947 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/bf7a9a5d9/ac9c16859e8b484cbacdad6d5c5f5a45/FLAG17d5beba0 [2021-01-06 21:04:20,197 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/bf7a9a5d9/ac9c16859e8b484cbacdad6d5c5f5a45 [2021-01-06 21:04:20,201 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 21:04:20,204 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 21:04:20,206 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 21:04:20,206 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 21:04:20,210 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 21:04:20,212 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 09:04:20" (1/1) ... [2021-01-06 21:04:20,213 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@748e942f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 09:04:20, skipping insertion in model container [2021-01-06 21:04:20,213 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 09:04:20" (1/1) ... [2021-01-06 21:04:20,224 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 21:04:20,292 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_6147~0,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[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~0,] left hand side expression in assignment: lhs: VariableLHS[~p5_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[~node5__m5~0,] left hand side expression in assignment: lhs: VariableLHS[~node5__m5~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,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[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_6261~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_1~0,] left hand side expression in assignment: lhs: VariableLHS[~assert__arg~0,] [2021-01-06 21:04:20,514 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.5.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[5401,5414] 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[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~st5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node5____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node5____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~st4~0,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[~st3~0,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[~st2~0,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[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] [2021-01-06 21:04:20,549 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 21:04:20,583 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_6147~0,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[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~0,] left hand side expression in assignment: lhs: VariableLHS[~p5_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[~node5__m5~0,] left hand side expression in assignment: lhs: VariableLHS[~node5__m5~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,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[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_6261~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_1~0,] left hand side expression in assignment: lhs: VariableLHS[~assert__arg~0,] [2021-01-06 21:04:20,642 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.5.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[5401,5414] 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[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~st5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node5____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node5____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~st4~0,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[~st3~0,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[~st2~0,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[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] [2021-01-06 21:04:20,686 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 21:04:20,722 INFO L208 MainTranslator]: Completed translation [2021-01-06 21:04:20,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 09:04:20 WrapperNode [2021-01-06 21:04:20,722 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 21:04:20,724 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 21:04:20,724 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 21:04:20,724 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 21:04:20,735 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 09:04:20" (1/1) ... [2021-01-06 21:04:20,750 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 09:04:20" (1/1) ... [2021-01-06 21:04:20,792 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 21:04:20,793 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 21:04:20,793 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 21:04:20,794 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 21:04:20,804 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 09:04:20" (1/1) ... [2021-01-06 21:04:20,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 09:04:20" (1/1) ... [2021-01-06 21:04:20,809 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 09:04:20" (1/1) ... [2021-01-06 21:04:20,810 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 09:04:20" (1/1) ... [2021-01-06 21:04:20,824 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 09:04:20" (1/1) ... [2021-01-06 21:04:20,831 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 09:04:20" (1/1) ... [2021-01-06 21:04:20,834 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 09:04:20" (1/1) ... [2021-01-06 21:04:20,840 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 21:04:20,841 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 21:04:20,842 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 21:04:20,842 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 21:04:20,843 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 09:04:20" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 21:04:20,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 21:04:20,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 21:04:20,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 21:04:20,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 21:04:22,072 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 21:04:22,073 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-01-06 21:04:22,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 09:04:22 BoogieIcfgContainer [2021-01-06 21:04:22,075 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 21:04:22,077 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 21:04:22,077 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 21:04:22,080 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 21:04:22,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 09:04:20" (1/3) ... [2021-01-06 21:04:22,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69757e8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 09:04:22, skipping insertion in model container [2021-01-06 21:04:22,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 09:04:20" (2/3) ... [2021-01-06 21:04:22,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69757e8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 09:04:22, skipping insertion in model container [2021-01-06 21:04:22,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 09:04:22" (3/3) ... [2021-01-06 21:04:22,084 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2021-01-06 21:04:22,091 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 21:04:22,098 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 21:04:22,114 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 21:04:22,145 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 21:04:22,145 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 21:04:22,145 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 21:04:22,145 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 21:04:22,145 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 21:04:22,145 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 21:04:22,146 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 21:04:22,146 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 21:04:22,166 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states. [2021-01-06 21:04:22,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-01-06 21:04:22,177 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:04:22,178 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 21:04:22,178 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:04:22,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:04:22,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1055716622, now seen corresponding path program 1 times [2021-01-06 21:04:22,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:04:22,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270275309] [2021-01-06 21:04:22,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:04:22,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:04:22,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 21:04:22,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270275309] [2021-01-06 21:04:22,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:04:22,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 21:04:22,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056289678] [2021-01-06 21:04:22,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 21:04:22,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:04:22,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 21:04:22,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 21:04:22,723 INFO L87 Difference]: Start difference. First operand 99 states. Second operand 3 states. [2021-01-06 21:04:22,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:04:22,813 INFO L93 Difference]: Finished difference Result 221 states and 356 transitions. [2021-01-06 21:04:22,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 21:04:22,815 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2021-01-06 21:04:22,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:04:22,838 INFO L225 Difference]: With dead ends: 221 [2021-01-06 21:04:22,838 INFO L226 Difference]: Without dead ends: 150 [2021-01-06 21:04:22,843 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 21:04:22,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-01-06 21:04:22,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 148. [2021-01-06 21:04:22,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2021-01-06 21:04:22,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 215 transitions. [2021-01-06 21:04:22,919 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 215 transitions. Word has length 60 [2021-01-06 21:04:22,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:04:22,920 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 215 transitions. [2021-01-06 21:04:22,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 21:04:22,921 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 215 transitions. [2021-01-06 21:04:22,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-01-06 21:04:22,927 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:04:22,927 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 21:04:22,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 21:04:22,928 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:04:22,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:04:22,930 INFO L82 PathProgramCache]: Analyzing trace with hash 160325981, now seen corresponding path program 1 times [2021-01-06 21:04:22,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:04:22,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218623034] [2021-01-06 21:04:22,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:04:23,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:04:23,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 21:04:23,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218623034] [2021-01-06 21:04:23,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:04:23,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 21:04:23,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948766088] [2021-01-06 21:04:23,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 21:04:23,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:04:23,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 21:04:23,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 21:04:23,208 INFO L87 Difference]: Start difference. First operand 148 states and 215 transitions. Second operand 3 states. [2021-01-06 21:04:23,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:04:23,330 INFO L93 Difference]: Finished difference Result 360 states and 551 transitions. [2021-01-06 21:04:23,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 21:04:23,331 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2021-01-06 21:04:23,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:04:23,339 INFO L225 Difference]: With dead ends: 360 [2021-01-06 21:04:23,339 INFO L226 Difference]: Without dead ends: 246 [2021-01-06 21:04:23,344 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 21:04:23,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2021-01-06 21:04:23,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 244. [2021-01-06 21:04:23,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2021-01-06 21:04:23,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 367 transitions. [2021-01-06 21:04:23,403 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 367 transitions. Word has length 61 [2021-01-06 21:04:23,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:04:23,403 INFO L481 AbstractCegarLoop]: Abstraction has 244 states and 367 transitions. [2021-01-06 21:04:23,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 21:04:23,404 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 367 transitions. [2021-01-06 21:04:23,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-01-06 21:04:23,406 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:04:23,406 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 21:04:23,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 21:04:23,407 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:04:23,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:04:23,407 INFO L82 PathProgramCache]: Analyzing trace with hash -2130731763, now seen corresponding path program 1 times [2021-01-06 21:04:23,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:04:23,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544129210] [2021-01-06 21:04:23,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:04:23,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:04:23,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 21:04:23,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544129210] [2021-01-06 21:04:23,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:04:23,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 21:04:23,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230318404] [2021-01-06 21:04:23,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 21:04:23,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:04:23,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 21:04:23,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 21:04:23,593 INFO L87 Difference]: Start difference. First operand 244 states and 367 transitions. Second operand 3 states. [2021-01-06 21:04:23,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:04:23,647 INFO L93 Difference]: Finished difference Result 632 states and 981 transitions. [2021-01-06 21:04:23,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 21:04:23,648 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2021-01-06 21:04:23,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:04:23,652 INFO L225 Difference]: With dead ends: 632 [2021-01-06 21:04:23,652 INFO L226 Difference]: Without dead ends: 422 [2021-01-06 21:04:23,654 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 21:04:23,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2021-01-06 21:04:23,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 420. [2021-01-06 21:04:23,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 420 states. [2021-01-06 21:04:23,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 643 transitions. [2021-01-06 21:04:23,733 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 643 transitions. Word has length 62 [2021-01-06 21:04:23,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:04:23,734 INFO L481 AbstractCegarLoop]: Abstraction has 420 states and 643 transitions. [2021-01-06 21:04:23,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 21:04:23,734 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 643 transitions. [2021-01-06 21:04:23,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-01-06 21:04:23,738 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:04:23,739 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 21:04:23,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 21:04:23,740 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:04:23,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:04:23,741 INFO L82 PathProgramCache]: Analyzing trace with hash 2078468845, now seen corresponding path program 1 times [2021-01-06 21:04:23,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:04:23,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906654153] [2021-01-06 21:04:23,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:04:23,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:04:23,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 21:04:23,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906654153] [2021-01-06 21:04:23,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:04:23,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 21:04:23,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049887047] [2021-01-06 21:04:23,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 21:04:23,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:04:23,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 21:04:23,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 21:04:23,873 INFO L87 Difference]: Start difference. First operand 420 states and 643 transitions. Second operand 3 states. [2021-01-06 21:04:23,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:04:23,936 INFO L93 Difference]: Finished difference Result 1128 states and 1757 transitions. [2021-01-06 21:04:23,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 21:04:23,937 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2021-01-06 21:04:23,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:04:23,943 INFO L225 Difference]: With dead ends: 1128 [2021-01-06 21:04:23,943 INFO L226 Difference]: Without dead ends: 742 [2021-01-06 21:04:23,946 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 21:04:23,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2021-01-06 21:04:23,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 740. [2021-01-06 21:04:23,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 740 states. [2021-01-06 21:04:23,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 1139 transitions. [2021-01-06 21:04:23,998 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 1139 transitions. Word has length 63 [2021-01-06 21:04:23,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:04:23,998 INFO L481 AbstractCegarLoop]: Abstraction has 740 states and 1139 transitions. [2021-01-06 21:04:23,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 21:04:23,999 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 1139 transitions. [2021-01-06 21:04:24,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-01-06 21:04:24,000 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:04:24,000 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 21:04:24,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 21:04:24,001 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:04:24,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:04:24,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1380036385, now seen corresponding path program 1 times [2021-01-06 21:04:24,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:04:24,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810746638] [2021-01-06 21:04:24,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:04:24,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:04:24,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 21:04:24,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810746638] [2021-01-06 21:04:24,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:04:24,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 21:04:24,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580866177] [2021-01-06 21:04:24,226 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 21:04:24,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:04:24,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 21:04:24,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-01-06 21:04:24,228 INFO L87 Difference]: Start difference. First operand 740 states and 1139 transitions. Second operand 6 states. [2021-01-06 21:04:24,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:04:24,544 INFO L93 Difference]: Finished difference Result 2144 states and 3333 transitions. [2021-01-06 21:04:24,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 21:04:24,545 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2021-01-06 21:04:24,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:04:24,554 INFO L225 Difference]: With dead ends: 2144 [2021-01-06 21:04:24,554 INFO L226 Difference]: Without dead ends: 1438 [2021-01-06 21:04:24,556 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-01-06 21:04:24,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1438 states. [2021-01-06 21:04:24,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1438 to 1436. [2021-01-06 21:04:24,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1436 states. [2021-01-06 21:04:24,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 2219 transitions. [2021-01-06 21:04:24,664 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 2219 transitions. Word has length 64 [2021-01-06 21:04:24,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:04:24,665 INFO L481 AbstractCegarLoop]: Abstraction has 1436 states and 2219 transitions. [2021-01-06 21:04:24,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 21:04:24,665 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 2219 transitions. [2021-01-06 21:04:24,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-01-06 21:04:24,667 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:04:24,667 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 21:04:24,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-06 21:04:24,667 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:04:24,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:04:24,668 INFO L82 PathProgramCache]: Analyzing trace with hash -106168380, now seen corresponding path program 1 times [2021-01-06 21:04:24,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:04:24,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542657383] [2021-01-06 21:04:24,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:04:24,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:04:24,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 21:04:24,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542657383] [2021-01-06 21:04:24,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:04:24,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 21:04:24,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908102198] [2021-01-06 21:04:24,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 21:04:24,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:04:24,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 21:04:24,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 21:04:24,775 INFO L87 Difference]: Start difference. First operand 1436 states and 2219 transitions. Second operand 5 states. [2021-01-06 21:04:24,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:04:24,985 INFO L93 Difference]: Finished difference Result 2838 states and 4404 transitions. [2021-01-06 21:04:24,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 21:04:24,986 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2021-01-06 21:04:24,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:04:24,995 INFO L225 Difference]: With dead ends: 2838 [2021-01-06 21:04:24,995 INFO L226 Difference]: Without dead ends: 1436 [2021-01-06 21:04:24,998 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-06 21:04:25,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1436 states. [2021-01-06 21:04:25,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1436 to 1436. [2021-01-06 21:04:25,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1436 states. [2021-01-06 21:04:25,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 2203 transitions. [2021-01-06 21:04:25,119 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 2203 transitions. Word has length 64 [2021-01-06 21:04:25,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:04:25,120 INFO L481 AbstractCegarLoop]: Abstraction has 1436 states and 2203 transitions. [2021-01-06 21:04:25,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 21:04:25,121 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 2203 transitions. [2021-01-06 21:04:25,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-01-06 21:04:25,123 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:04:25,124 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 21:04:25,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-06 21:04:25,125 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:04:25,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:04:25,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1553197975, now seen corresponding path program 1 times [2021-01-06 21:04:25,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:04:25,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752381907] [2021-01-06 21:04:25,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:04:25,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:04:25,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 21:04:25,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752381907] [2021-01-06 21:04:25,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:04:25,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 21:04:25,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658638019] [2021-01-06 21:04:25,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 21:04:25,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:04:25,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 21:04:25,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 21:04:25,268 INFO L87 Difference]: Start difference. First operand 1436 states and 2203 transitions. Second operand 5 states. [2021-01-06 21:04:25,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:04:25,552 INFO L93 Difference]: Finished difference Result 2838 states and 4372 transitions. [2021-01-06 21:04:25,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 21:04:25,552 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2021-01-06 21:04:25,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:04:25,560 INFO L225 Difference]: With dead ends: 2838 [2021-01-06 21:04:25,561 INFO L226 Difference]: Without dead ends: 1436 [2021-01-06 21:04:25,565 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-06 21:04:25,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1436 states. [2021-01-06 21:04:25,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1436 to 1436. [2021-01-06 21:04:25,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1436 states. [2021-01-06 21:04:25,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 2187 transitions. [2021-01-06 21:04:25,706 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 2187 transitions. Word has length 64 [2021-01-06 21:04:25,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:04:25,706 INFO L481 AbstractCegarLoop]: Abstraction has 1436 states and 2187 transitions. [2021-01-06 21:04:25,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 21:04:25,707 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 2187 transitions. [2021-01-06 21:04:25,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-01-06 21:04:25,708 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:04:25,709 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 21:04:25,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-06 21:04:25,709 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:04:25,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:04:25,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1277697764, now seen corresponding path program 1 times [2021-01-06 21:04:25,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:04:25,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012131986] [2021-01-06 21:04:25,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:04:25,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:04:25,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 21:04:25,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012131986] [2021-01-06 21:04:25,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:04:25,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-06 21:04:25,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623331194] [2021-01-06 21:04:25,853 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 21:04:25,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:04:25,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 21:04:25,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-06 21:04:25,854 INFO L87 Difference]: Start difference. First operand 1436 states and 2187 transitions. Second operand 7 states. [2021-01-06 21:04:27,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:04:27,316 INFO L93 Difference]: Finished difference Result 15456 states and 23717 transitions. [2021-01-06 21:04:27,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 21:04:27,317 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2021-01-06 21:04:27,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:04:27,390 INFO L225 Difference]: With dead ends: 15456 [2021-01-06 21:04:27,390 INFO L226 Difference]: Without dead ends: 14054 [2021-01-06 21:04:27,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-01-06 21:04:27,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14054 states. [2021-01-06 21:04:27,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14054 to 2836. [2021-01-06 21:04:27,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2836 states. [2021-01-06 21:04:27,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2836 states to 2836 states and 4275 transitions. [2021-01-06 21:04:27,878 INFO L78 Accepts]: Start accepts. Automaton has 2836 states and 4275 transitions. Word has length 64 [2021-01-06 21:04:27,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:04:27,879 INFO L481 AbstractCegarLoop]: Abstraction has 2836 states and 4275 transitions. [2021-01-06 21:04:27,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 21:04:27,879 INFO L276 IsEmpty]: Start isEmpty. Operand 2836 states and 4275 transitions. [2021-01-06 21:04:27,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-01-06 21:04:27,880 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:04:27,880 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 21:04:27,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-06 21:04:27,881 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:04:27,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:04:27,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1414916288, now seen corresponding path program 1 times [2021-01-06 21:04:27,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:04:27,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511545733] [2021-01-06 21:04:27,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:04:27,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:04:27,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 21:04:27,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511545733] [2021-01-06 21:04:27,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:04:27,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 21:04:27,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381965428] [2021-01-06 21:04:27,950 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 21:04:27,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:04:27,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 21:04:27,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 21:04:27,952 INFO L87 Difference]: Start difference. First operand 2836 states and 4275 transitions. Second operand 3 states. [2021-01-06 21:04:28,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:04:28,650 INFO L93 Difference]: Finished difference Result 8088 states and 12149 transitions. [2021-01-06 21:04:28,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 21:04:28,651 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2021-01-06 21:04:28,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:04:28,677 INFO L225 Difference]: With dead ends: 8088 [2021-01-06 21:04:28,677 INFO L226 Difference]: Without dead ends: 5286 [2021-01-06 21:04:28,684 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 21:04:28,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5286 states. [2021-01-06 21:04:29,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5286 to 5220. [2021-01-06 21:04:29,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5220 states. [2021-01-06 21:04:29,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5220 states to 5220 states and 7683 transitions. [2021-01-06 21:04:29,342 INFO L78 Accepts]: Start accepts. Automaton has 5220 states and 7683 transitions. Word has length 66 [2021-01-06 21:04:29,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:04:29,343 INFO L481 AbstractCegarLoop]: Abstraction has 5220 states and 7683 transitions. [2021-01-06 21:04:29,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 21:04:29,343 INFO L276 IsEmpty]: Start isEmpty. Operand 5220 states and 7683 transitions. [2021-01-06 21:04:29,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-01-06 21:04:29,344 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:04:29,344 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 21:04:29,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-01-06 21:04:29,345 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:04:29,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:04:29,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1393913633, now seen corresponding path program 1 times [2021-01-06 21:04:29,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:04:29,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818012449] [2021-01-06 21:04:29,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:04:29,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:04:29,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 21:04:29,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818012449] [2021-01-06 21:04:29,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:04:29,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-06 21:04:29,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313882151] [2021-01-06 21:04:29,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 21:04:29,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:04:29,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 21:04:29,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-01-06 21:04:29,625 INFO L87 Difference]: Start difference. First operand 5220 states and 7683 transitions. Second operand 7 states. [2021-01-06 21:04:30,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:04:30,498 INFO L93 Difference]: Finished difference Result 10408 states and 15333 transitions. [2021-01-06 21:04:30,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 21:04:30,501 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 66 [2021-01-06 21:04:30,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:04:30,535 INFO L225 Difference]: With dead ends: 10408 [2021-01-06 21:04:30,535 INFO L226 Difference]: Without dead ends: 5222 [2021-01-06 21:04:30,544 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-01-06 21:04:30,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5222 states. [2021-01-06 21:04:31,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5222 to 5220. [2021-01-06 21:04:31,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5220 states. [2021-01-06 21:04:31,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5220 states to 5220 states and 7619 transitions. [2021-01-06 21:04:31,339 INFO L78 Accepts]: Start accepts. Automaton has 5220 states and 7619 transitions. Word has length 66 [2021-01-06 21:04:31,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:04:31,339 INFO L481 AbstractCegarLoop]: Abstraction has 5220 states and 7619 transitions. [2021-01-06 21:04:31,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 21:04:31,340 INFO L276 IsEmpty]: Start isEmpty. Operand 5220 states and 7619 transitions. [2021-01-06 21:04:31,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-01-06 21:04:31,340 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:04:31,341 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 21:04:31,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-01-06 21:04:31,341 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:04:31,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:04:31,341 INFO L82 PathProgramCache]: Analyzing trace with hash -573930250, now seen corresponding path program 1 times [2021-01-06 21:04:31,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:04:31,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173184457] [2021-01-06 21:04:31,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:04:31,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:04:31,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 21:04:31,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173184457] [2021-01-06 21:04:31,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:04:31,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 21:04:31,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669623514] [2021-01-06 21:04:31,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 21:04:31,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:04:31,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 21:04:31,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 21:04:31,405 INFO L87 Difference]: Start difference. First operand 5220 states and 7619 transitions. Second operand 3 states. [2021-01-06 21:04:32,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:04:32,192 INFO L93 Difference]: Finished difference Result 10187 states and 15017 transitions. [2021-01-06 21:04:32,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 21:04:32,193 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2021-01-06 21:04:32,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:04:32,213 INFO L225 Difference]: With dead ends: 10187 [2021-01-06 21:04:32,213 INFO L226 Difference]: Without dead ends: 7384 [2021-01-06 21:04:32,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 21:04:32,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7384 states. [2021-01-06 21:04:32,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7384 to 7382. [2021-01-06 21:04:32,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7382 states. [2021-01-06 21:04:33,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7382 states to 7382 states and 10741 transitions. [2021-01-06 21:04:33,003 INFO L78 Accepts]: Start accepts. Automaton has 7382 states and 10741 transitions. Word has length 67 [2021-01-06 21:04:33,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:04:33,003 INFO L481 AbstractCegarLoop]: Abstraction has 7382 states and 10741 transitions. [2021-01-06 21:04:33,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 21:04:33,004 INFO L276 IsEmpty]: Start isEmpty. Operand 7382 states and 10741 transitions. [2021-01-06 21:04:33,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-01-06 21:04:33,004 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:04:33,004 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 21:04:33,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-01-06 21:04:33,005 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:04:33,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:04:33,005 INFO L82 PathProgramCache]: Analyzing trace with hash -263559015, now seen corresponding path program 1 times [2021-01-06 21:04:33,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:04:33,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138883463] [2021-01-06 21:04:33,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:04:33,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:04:33,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 21:04:33,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138883463] [2021-01-06 21:04:33,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:04:33,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 21:04:33,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497771807] [2021-01-06 21:04:33,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 21:04:33,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:04:33,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 21:04:33,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 21:04:33,100 INFO L87 Difference]: Start difference. First operand 7382 states and 10741 transitions. Second operand 5 states. [2021-01-06 21:04:34,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:04:34,403 INFO L93 Difference]: Finished difference Result 13277 states and 19252 transitions. [2021-01-06 21:04:34,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 21:04:34,403 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2021-01-06 21:04:34,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:04:34,443 INFO L225 Difference]: With dead ends: 13277 [2021-01-06 21:04:34,443 INFO L226 Difference]: Without dead ends: 13275 [2021-01-06 21:04:34,450 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-01-06 21:04:34,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13275 states. [2021-01-06 21:04:35,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13275 to 7638. [2021-01-06 21:04:35,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7638 states. [2021-01-06 21:04:35,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7638 states to 7638 states and 10965 transitions. [2021-01-06 21:04:35,209 INFO L78 Accepts]: Start accepts. Automaton has 7638 states and 10965 transitions. Word has length 67 [2021-01-06 21:04:35,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:04:35,210 INFO L481 AbstractCegarLoop]: Abstraction has 7638 states and 10965 transitions. [2021-01-06 21:04:35,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 21:04:35,210 INFO L276 IsEmpty]: Start isEmpty. Operand 7638 states and 10965 transitions. [2021-01-06 21:04:35,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-01-06 21:04:35,214 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:04:35,214 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 21:04:35,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-01-06 21:04:35,214 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:04:35,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:04:35,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1999510602, now seen corresponding path program 1 times [2021-01-06 21:04:35,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:04:35,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648145753] [2021-01-06 21:04:35,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:04:35,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:04:35,339 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-01-06 21:04:35,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648145753] [2021-01-06 21:04:35,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:04:35,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-06 21:04:35,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58062536] [2021-01-06 21:04:35,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 21:04:35,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:04:35,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 21:04:35,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-01-06 21:04:35,342 INFO L87 Difference]: Start difference. First operand 7638 states and 10965 transitions. Second operand 7 states. [2021-01-06 21:04:38,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:04:38,728 INFO L93 Difference]: Finished difference Result 47082 states and 67603 transitions. [2021-01-06 21:04:38,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 21:04:38,729 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2021-01-06 21:04:38,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:04:38,831 INFO L225 Difference]: With dead ends: 47082 [2021-01-06 21:04:38,831 INFO L226 Difference]: Without dead ends: 39480 [2021-01-06 21:04:38,857 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-06 21:04:38,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39480 states. [2021-01-06 21:04:40,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39480 to 15238. [2021-01-06 21:04:40,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15238 states. [2021-01-06 21:04:40,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15238 states to 15238 states and 21797 transitions. [2021-01-06 21:04:40,695 INFO L78 Accepts]: Start accepts. Automaton has 15238 states and 21797 transitions. Word has length 94 [2021-01-06 21:04:40,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:04:40,695 INFO L481 AbstractCegarLoop]: Abstraction has 15238 states and 21797 transitions. [2021-01-06 21:04:40,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 21:04:40,695 INFO L276 IsEmpty]: Start isEmpty. Operand 15238 states and 21797 transitions. [2021-01-06 21:04:40,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-01-06 21:04:40,700 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:04:40,700 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 21:04:40,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-01-06 21:04:40,701 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:04:40,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:04:40,701 INFO L82 PathProgramCache]: Analyzing trace with hash 845564496, now seen corresponding path program 1 times [2021-01-06 21:04:40,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:04:40,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936519993] [2021-01-06 21:04:40,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:04:40,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:04:40,817 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-01-06 21:04:40,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936519993] [2021-01-06 21:04:40,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:04:40,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-06 21:04:40,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872473380] [2021-01-06 21:04:40,818 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 21:04:40,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:04:40,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 21:04:40,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-01-06 21:04:40,819 INFO L87 Difference]: Start difference. First operand 15238 states and 21797 transitions. Second operand 7 states. [2021-01-06 21:04:44,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:04:44,776 INFO L93 Difference]: Finished difference Result 54682 states and 78435 transitions. [2021-01-06 21:04:44,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 21:04:44,777 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2021-01-06 21:04:44,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:04:44,869 INFO L225 Difference]: With dead ends: 54682 [2021-01-06 21:04:44,869 INFO L226 Difference]: Without dead ends: 47080 [2021-01-06 21:04:44,890 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-06 21:04:44,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47080 states. [2021-01-06 21:04:47,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47080 to 26654. [2021-01-06 21:04:47,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26654 states. [2021-01-06 21:04:47,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26654 states to 26654 states and 37965 transitions. [2021-01-06 21:04:47,861 INFO L78 Accepts]: Start accepts. Automaton has 26654 states and 37965 transitions. Word has length 94 [2021-01-06 21:04:47,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:04:47,861 INFO L481 AbstractCegarLoop]: Abstraction has 26654 states and 37965 transitions. [2021-01-06 21:04:47,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 21:04:47,861 INFO L276 IsEmpty]: Start isEmpty. Operand 26654 states and 37965 transitions. [2021-01-06 21:04:47,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-01-06 21:04:47,865 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:04:47,865 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 21:04:47,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-01-06 21:04:47,866 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:04:47,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:04:47,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1141609924, now seen corresponding path program 1 times [2021-01-06 21:04:47,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:04:47,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434701163] [2021-01-06 21:04:47,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:04:47,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:04:48,022 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-01-06 21:04:48,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434701163] [2021-01-06 21:04:48,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:04:48,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-06 21:04:48,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59726841] [2021-01-06 21:04:48,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 21:04:48,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:04:48,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 21:04:48,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-01-06 21:04:48,025 INFO L87 Difference]: Start difference. First operand 26654 states and 37965 transitions. Second operand 7 states. [2021-01-06 21:04:53,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:04:53,593 INFO L93 Difference]: Finished difference Result 62282 states and 89267 transitions. [2021-01-06 21:04:53,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 21:04:53,594 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2021-01-06 21:04:53,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:04:53,682 INFO L225 Difference]: With dead ends: 62282 [2021-01-06 21:04:53,682 INFO L226 Difference]: Without dead ends: 54680 [2021-01-06 21:04:53,709 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-06 21:04:53,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54680 states. [2021-01-06 21:04:57,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54680 to 34254. [2021-01-06 21:04:57,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34254 states. [2021-01-06 21:04:57,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34254 states to 34254 states and 48797 transitions. [2021-01-06 21:04:57,224 INFO L78 Accepts]: Start accepts. Automaton has 34254 states and 48797 transitions. Word has length 94 [2021-01-06 21:04:57,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:04:57,224 INFO L481 AbstractCegarLoop]: Abstraction has 34254 states and 48797 transitions. [2021-01-06 21:04:57,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 21:04:57,224 INFO L276 IsEmpty]: Start isEmpty. Operand 34254 states and 48797 transitions. [2021-01-06 21:04:57,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-01-06 21:04:57,229 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:04:57,229 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 21:04:57,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-01-06 21:04:57,229 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:04:57,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:04:57,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1724860738, now seen corresponding path program 1 times [2021-01-06 21:04:57,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:04:57,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559888057] [2021-01-06 21:04:57,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:04:57,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:04:57,345 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-06 21:04:57,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559888057] [2021-01-06 21:04:57,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:04:57,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-06 21:04:57,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23720711] [2021-01-06 21:04:57,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 21:04:57,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:04:57,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 21:04:57,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-01-06 21:04:57,350 INFO L87 Difference]: Start difference. First operand 34254 states and 48797 transitions. Second operand 7 states. [2021-01-06 21:05:03,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:05:03,553 INFO L93 Difference]: Finished difference Result 69882 states and 100099 transitions. [2021-01-06 21:05:03,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 21:05:03,554 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2021-01-06 21:05:03,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:05:03,621 INFO L225 Difference]: With dead ends: 69882 [2021-01-06 21:05:03,621 INFO L226 Difference]: Without dead ends: 62280 [2021-01-06 21:05:03,642 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-06 21:05:03,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62280 states. [2021-01-06 21:05:08,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62280 to 41854. [2021-01-06 21:05:08,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41854 states. [2021-01-06 21:05:08,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41854 states to 41854 states and 59629 transitions. [2021-01-06 21:05:08,445 INFO L78 Accepts]: Start accepts. Automaton has 41854 states and 59629 transitions. Word has length 94 [2021-01-06 21:05:08,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:05:08,446 INFO L481 AbstractCegarLoop]: Abstraction has 41854 states and 59629 transitions. [2021-01-06 21:05:08,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 21:05:08,446 INFO L276 IsEmpty]: Start isEmpty. Operand 41854 states and 59629 transitions. [2021-01-06 21:05:08,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-01-06 21:05:08,453 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:05:08,453 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 21:05:08,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-01-06 21:05:08,453 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:05:08,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:05:08,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1883520118, now seen corresponding path program 1 times [2021-01-06 21:05:08,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:05:08,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304441232] [2021-01-06 21:05:08,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:05:08,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:05:08,575 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-06 21:05:08,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304441232] [2021-01-06 21:05:08,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:05:08,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-06 21:05:08,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988329621] [2021-01-06 21:05:08,577 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 21:05:08,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:05:08,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 21:05:08,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-01-06 21:05:08,578 INFO L87 Difference]: Start difference. First operand 41854 states and 59629 transitions. Second operand 7 states. [2021-01-06 21:05:16,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:05:16,140 INFO L93 Difference]: Finished difference Result 72714 states and 104243 transitions. [2021-01-06 21:05:16,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 21:05:16,141 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 95 [2021-01-06 21:05:16,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:05:16,232 INFO L225 Difference]: With dead ends: 72714 [2021-01-06 21:05:16,232 INFO L226 Difference]: Without dead ends: 67496 [2021-01-06 21:05:16,254 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-06 21:05:16,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67496 states. [2021-01-06 21:05:21,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67496 to 47070. [2021-01-06 21:05:21,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47070 states. [2021-01-06 21:05:21,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47070 states to 47070 states and 67149 transitions. [2021-01-06 21:05:21,752 INFO L78 Accepts]: Start accepts. Automaton has 47070 states and 67149 transitions. Word has length 95 [2021-01-06 21:05:21,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:05:21,753 INFO L481 AbstractCegarLoop]: Abstraction has 47070 states and 67149 transitions. [2021-01-06 21:05:21,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 21:05:21,753 INFO L276 IsEmpty]: Start isEmpty. Operand 47070 states and 67149 transitions. [2021-01-06 21:05:21,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-01-06 21:05:21,759 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:05:21,759 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 21:05:21,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-01-06 21:05:21,760 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:05:21,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:05:21,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1641928633, now seen corresponding path program 1 times [2021-01-06 21:05:21,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:05:21,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676281035] [2021-01-06 21:05:21,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:05:21,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:05:22,000 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 21:05:22,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676281035] [2021-01-06 21:05:22,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661149602] [2021-01-06 21:05:22,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 21:05:22,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:05:22,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 4 conjunts are in the unsatisfiable core [2021-01-06 21:05:22,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 21:05:22,709 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-06 21:05:22,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 21:05:22,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4] total 12 [2021-01-06 21:05:22,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020030451] [2021-01-06 21:05:22,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-06 21:05:22,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:05:22,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-06 21:05:22,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-01-06 21:05:22,712 INFO L87 Difference]: Start difference. First operand 47070 states and 67149 transitions. Second operand 12 states. [2021-01-06 21:06:06,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:06:06,310 INFO L93 Difference]: Finished difference Result 335322 states and 475251 transitions. [2021-01-06 21:06:06,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-01-06 21:06:06,311 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 96 [2021-01-06 21:06:06,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:06:07,169 INFO L225 Difference]: With dead ends: 335322 [2021-01-06 21:06:07,170 INFO L226 Difference]: Without dead ends: 301416 [2021-01-06 21:06:07,298 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2136 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=975, Invalid=4725, Unknown=0, NotChecked=0, Total=5700 [2021-01-06 21:06:07,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301416 states. [2021-01-06 21:06:25,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301416 to 119470. [2021-01-06 21:06:25,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119470 states. [2021-01-06 21:06:25,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119470 states to 119470 states and 167901 transitions. [2021-01-06 21:06:25,995 INFO L78 Accepts]: Start accepts. Automaton has 119470 states and 167901 transitions. Word has length 96 [2021-01-06 21:06:25,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:06:25,995 INFO L481 AbstractCegarLoop]: Abstraction has 119470 states and 167901 transitions. [2021-01-06 21:06:25,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-06 21:06:25,995 INFO L276 IsEmpty]: Start isEmpty. Operand 119470 states and 167901 transitions. [2021-01-06 21:06:26,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-01-06 21:06:26,003 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:06:26,003 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 21:06:26,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-01-06 21:06:26,218 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:06:26,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:06:26,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1309023430, now seen corresponding path program 1 times [2021-01-06 21:06:26,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:06:26,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957721189] [2021-01-06 21:06:26,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:06:26,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:06:26,517 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 21:06:26,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957721189] [2021-01-06 21:06:26,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:06:26,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 21:06:26,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031794671] [2021-01-06 21:06:26,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 21:06:26,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:06:26,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 21:06:26,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 21:06:26,520 INFO L87 Difference]: Start difference. First operand 119470 states and 167901 transitions. Second operand 3 states. [2021-01-06 21:06:36,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:06:36,107 INFO L93 Difference]: Finished difference Result 185878 states and 261654 transitions. [2021-01-06 21:06:36,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 21:06:36,107 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 96 [2021-01-06 21:06:36,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:06:36,219 INFO L225 Difference]: With dead ends: 185878 [2021-01-06 21:06:36,219 INFO L226 Difference]: Without dead ends: 66444 [2021-01-06 21:06:36,301 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 21:06:36,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66444 states. [2021-01-06 21:06:45,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66444 to 66442. [2021-01-06 21:06:45,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66442 states. [2021-01-06 21:06:45,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66442 states to 66442 states and 92482 transitions. [2021-01-06 21:06:45,694 INFO L78 Accepts]: Start accepts. Automaton has 66442 states and 92482 transitions. Word has length 96 [2021-01-06 21:06:45,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:06:45,694 INFO L481 AbstractCegarLoop]: Abstraction has 66442 states and 92482 transitions. [2021-01-06 21:06:45,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 21:06:45,694 INFO L276 IsEmpty]: Start isEmpty. Operand 66442 states and 92482 transitions. [2021-01-06 21:06:45,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-01-06 21:06:45,698 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:06:45,698 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 21:06:45,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-01-06 21:06:45,698 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:06:45,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:06:45,699 INFO L82 PathProgramCache]: Analyzing trace with hash 578980980, now seen corresponding path program 1 times [2021-01-06 21:06:45,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:06:45,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574725150] [2021-01-06 21:06:45,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:06:45,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:06:45,945 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 21:06:45,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574725150] [2021-01-06 21:06:45,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704399260] [2021-01-06 21:06:45,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 21:06:46,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:06:46,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 16 conjunts are in the unsatisfiable core [2021-01-06 21:06:46,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 21:06:46,285 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 21:06:46,553 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 21:06:46,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 21:06:46,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-01-06 21:06:46,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380459422] [2021-01-06 21:06:46,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-06 21:06:46,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:06:46,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-06 21:06:46,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2021-01-06 21:06:46,556 INFO L87 Difference]: Start difference. First operand 66442 states and 92482 transitions. Second operand 17 states. [2021-01-06 21:06:49,769 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2021-01-06 21:06:49,919 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2021-01-06 21:06:51,271 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2021-01-06 21:06:51,518 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2021-01-06 21:06:55,482 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2021-01-06 21:06:55,886 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2021-01-06 21:07:02,225 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 40 [2021-01-06 21:07:02,783 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2021-01-06 21:07:07,377 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2021-01-06 21:07:08,350 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 40 [2021-01-06 21:07:08,577 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 39 [2021-01-06 21:07:09,467 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2021-01-06 21:07:09,958 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2021-01-06 21:07:10,761 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2021-01-06 21:07:10,988 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 42 [2021-01-06 21:07:25,768 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2021-01-06 21:07:27,694 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 39 [2021-01-06 21:07:38,114 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2021-01-06 21:07:39,684 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2021-01-06 21:07:41,564 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2021-01-06 21:07:43,703 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2021-01-06 21:07:43,862 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2021-01-06 21:07:45,761 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2021-01-06 21:07:45,933 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2021-01-06 21:07:48,440 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 36 [2021-01-06 21:07:50,312 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2021-01-06 21:07:50,579 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2021-01-06 21:07:52,383 WARN L197 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51