/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 10:55:15,746 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 10:55:15,748 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 10:55:15,790 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 10:55:15,790 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 10:55:15,792 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 10:55:15,794 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 10:55:15,796 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 10:55:15,805 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 10:55:15,806 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 10:55:15,807 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 10:55:15,809 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 10:55:15,809 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 10:55:15,811 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 10:55:15,812 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 10:55:15,813 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 10:55:15,814 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 10:55:15,815 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 10:55:15,817 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 10:55:15,820 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 10:55:15,821 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 10:55:15,823 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 10:55:15,824 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 10:55:15,826 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 10:55:15,829 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 10:55:15,833 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 10:55:15,834 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 10:55:15,835 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 10:55:15,836 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 10:55:15,837 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 10:55:15,838 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 10:55:15,839 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 10:55:15,839 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 10:55:15,839 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 10:55:15,840 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 10:55:15,841 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 10:55:15,842 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 10:55:15,869 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 10:55:15,870 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 10:55:15,871 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 10:55:15,871 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 10:55:15,872 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 10:55:15,872 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 10:55:15,872 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 10:55:15,872 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 10:55:15,873 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 10:55:15,873 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 10:55:15,873 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 10:55:15,873 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 10:55:15,874 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 10:55:15,874 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 10:55:15,874 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 10:55:15,874 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 10:55:15,875 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 10:55:15,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 10:55:15,875 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 10:55:15,875 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 10:55:15,876 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 10:55:15,876 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 10:55:15,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 10:55:15,876 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 10:55:15,877 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 10:55:15,877 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 10:55:16,285 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 10:55:16,322 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 10:55:16,325 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 10:55:16,327 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 10:55:16,328 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 10:55:16,329 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-23 10:55:16,423 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/245cf44e6/8ea78061c0f04db080916054c237d971/FLAGbcb93d6f3 [2020-12-23 10:55:17,060 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 10:55:17,061 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-23 10:55:17,077 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/245cf44e6/8ea78061c0f04db080916054c237d971/FLAGbcb93d6f3 [2020-12-23 10:55:17,386 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/245cf44e6/8ea78061c0f04db080916054c237d971 [2020-12-23 10:55:17,390 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 10:55:17,394 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 10:55:17,396 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 10:55:17,396 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 10:55:17,400 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 10:55:17,401 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 10:55:17" (1/1) ... [2020-12-23 10:55:17,403 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a2daa5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:55:17, skipping insertion in model container [2020-12-23 10:55:17,404 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 10:55:17" (1/1) ... [2020-12-23 10:55:17,416 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 10:55:17,485 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~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[~alive5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_58418~0,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_58583~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_1~0,] left hand side expression in assignment: lhs: VariableLHS[~assert__arg~0,] [2020-12-23 10:55:17,745 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[5952,5965] 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[~send5~0,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[~node5____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node5____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_1~0,] [2020-12-23 10:55:17,787 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 10:55:17,803 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~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[~alive5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_58418~0,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_58583~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_1~0,] left hand side expression in assignment: lhs: VariableLHS[~assert__arg~0,] [2020-12-23 10:55:17,872 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[5952,5965] 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[~send5~0,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[~node5____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node5____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_1~0,] [2020-12-23 10:55:17,905 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 10:55:17,930 INFO L208 MainTranslator]: Completed translation [2020-12-23 10:55:17,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:55:17 WrapperNode [2020-12-23 10:55:17,931 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 10:55:17,932 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 10:55:17,933 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 10:55:17,933 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 10:55:17,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:55:17" (1/1) ... [2020-12-23 10:55:17,952 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:55:17" (1/1) ... [2020-12-23 10:55:18,001 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 10:55:18,002 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 10:55:18,002 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 10:55:18,002 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 10:55:18,012 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:55:17" (1/1) ... [2020-12-23 10:55:18,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:55:17" (1/1) ... [2020-12-23 10:55:18,017 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:55:17" (1/1) ... [2020-12-23 10:55:18,017 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:55:17" (1/1) ... [2020-12-23 10:55:18,034 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:55:17" (1/1) ... [2020-12-23 10:55:18,048 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:55:17" (1/1) ... [2020-12-23 10:55:18,056 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:55:17" (1/1) ... [2020-12-23 10:55:18,069 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 10:55:18,070 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 10:55:18,070 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 10:55:18,072 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 10:55:18,073 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:55:17" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 10:55:18,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 10:55:18,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 10:55:18,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 10:55:18,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 10:55:18,924 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 10:55:18,925 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-23 10:55:18,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 10:55:18 BoogieIcfgContainer [2020-12-23 10:55:18,927 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 10:55:18,929 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 10:55:18,929 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 10:55:18,932 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 10:55:18,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 10:55:17" (1/3) ... [2020-12-23 10:55:18,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1d60a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 10:55:18, skipping insertion in model container [2020-12-23 10:55:18,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:55:17" (2/3) ... [2020-12-23 10:55:18,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1d60a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 10:55:18, skipping insertion in model container [2020-12-23 10:55:18,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 10:55:18" (3/3) ... [2020-12-23 10:55:18,937 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-23 10:55:18,943 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 10:55:18,949 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 10:55:18,968 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 10:55:19,001 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 10:55:19,001 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 10:55:19,001 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 10:55:19,001 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 10:55:19,001 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 10:55:19,001 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 10:55:19,002 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 10:55:19,002 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 10:55:19,021 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states. [2020-12-23 10:55:19,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-23 10:55:19,031 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:55:19,033 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] [2020-12-23 10:55:19,033 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:55:19,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:55:19,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1025697732, now seen corresponding path program 1 times [2020-12-23 10:55:19,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:55:19,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957822430] [2020-12-23 10:55:19,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:55:19,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:55:19,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:55:19,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957822430] [2020-12-23 10:55:19,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:55:19,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:55:19,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729613343] [2020-12-23 10:55:19,511 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:55:19,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:55:19,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:55:19,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:55:19,529 INFO L87 Difference]: Start difference. First operand 138 states. Second operand 3 states. [2020-12-23 10:55:19,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:55:19,617 INFO L93 Difference]: Finished difference Result 328 states and 528 transitions. [2020-12-23 10:55:19,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:55:19,619 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2020-12-23 10:55:19,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:55:19,634 INFO L225 Difference]: With dead ends: 328 [2020-12-23 10:55:19,634 INFO L226 Difference]: Without dead ends: 219 [2020-12-23 10:55:19,638 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:55:19,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-12-23 10:55:19,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 217. [2020-12-23 10:55:19,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-12-23 10:55:19,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 325 transitions. [2020-12-23 10:55:19,714 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 325 transitions. Word has length 61 [2020-12-23 10:55:19,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:55:19,714 INFO L481 AbstractCegarLoop]: Abstraction has 217 states and 325 transitions. [2020-12-23 10:55:19,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:55:19,715 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 325 transitions. [2020-12-23 10:55:19,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-23 10:55:19,718 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:55:19,718 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] [2020-12-23 10:55:19,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 10:55:19,719 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:55:19,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:55:19,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1571099909, now seen corresponding path program 1 times [2020-12-23 10:55:19,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:55:19,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191588674] [2020-12-23 10:55:19,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:55:19,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:55:19,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:55:19,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191588674] [2020-12-23 10:55:19,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:55:19,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:55:19,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551228131] [2020-12-23 10:55:19,915 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:55:19,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:55:19,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:55:19,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:55:19,917 INFO L87 Difference]: Start difference. First operand 217 states and 325 transitions. Second operand 3 states. [2020-12-23 10:55:19,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:55:19,983 INFO L93 Difference]: Finished difference Result 549 states and 853 transitions. [2020-12-23 10:55:19,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:55:19,983 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2020-12-23 10:55:19,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:55:19,987 INFO L225 Difference]: With dead ends: 549 [2020-12-23 10:55:19,988 INFO L226 Difference]: Without dead ends: 367 [2020-12-23 10:55:19,990 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:55:19,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2020-12-23 10:55:20,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 365. [2020-12-23 10:55:20,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-12-23 10:55:20,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 560 transitions. [2020-12-23 10:55:20,036 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 560 transitions. Word has length 62 [2020-12-23 10:55:20,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:55:20,037 INFO L481 AbstractCegarLoop]: Abstraction has 365 states and 560 transitions. [2020-12-23 10:55:20,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:55:20,037 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 560 transitions. [2020-12-23 10:55:20,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-23 10:55:20,040 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:55:20,040 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] [2020-12-23 10:55:20,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 10:55:20,041 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:55:20,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:55:20,042 INFO L82 PathProgramCache]: Analyzing trace with hash 195770199, now seen corresponding path program 1 times [2020-12-23 10:55:20,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:55:20,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007013490] [2020-12-23 10:55:20,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:55:20,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:55:20,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:55:20,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007013490] [2020-12-23 10:55:20,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:55:20,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:55:20,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196668723] [2020-12-23 10:55:20,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:55:20,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:55:20,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:55:20,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:55:20,188 INFO L87 Difference]: Start difference. First operand 365 states and 560 transitions. Second operand 3 states. [2020-12-23 10:55:20,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:55:20,249 INFO L93 Difference]: Finished difference Result 961 states and 1506 transitions. [2020-12-23 10:55:20,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:55:20,250 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2020-12-23 10:55:20,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:55:20,254 INFO L225 Difference]: With dead ends: 961 [2020-12-23 10:55:20,254 INFO L226 Difference]: Without dead ends: 631 [2020-12-23 10:55:20,257 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:55:20,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-12-23 10:55:20,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 629. [2020-12-23 10:55:20,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 629 states. [2020-12-23 10:55:20,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 976 transitions. [2020-12-23 10:55:20,326 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 976 transitions. Word has length 63 [2020-12-23 10:55:20,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:55:20,326 INFO L481 AbstractCegarLoop]: Abstraction has 629 states and 976 transitions. [2020-12-23 10:55:20,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:55:20,327 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 976 transitions. [2020-12-23 10:55:20,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-23 10:55:20,329 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:55:20,329 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] [2020-12-23 10:55:20,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 10:55:20,330 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:55:20,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:55:20,330 INFO L82 PathProgramCache]: Analyzing trace with hash 92320152, now seen corresponding path program 1 times [2020-12-23 10:55:20,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:55:20,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064554103] [2020-12-23 10:55:20,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:55:20,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:55:20,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:55:20,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064554103] [2020-12-23 10:55:20,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:55:20,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:55:20,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336066052] [2020-12-23 10:55:20,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:55:20,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:55:20,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:55:20,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:55:20,412 INFO L87 Difference]: Start difference. First operand 629 states and 976 transitions. Second operand 3 states. [2020-12-23 10:55:20,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:55:20,475 INFO L93 Difference]: Finished difference Result 1689 states and 2650 transitions. [2020-12-23 10:55:20,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:55:20,475 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2020-12-23 10:55:20,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:55:20,482 INFO L225 Difference]: With dead ends: 1689 [2020-12-23 10:55:20,482 INFO L226 Difference]: Without dead ends: 1095 [2020-12-23 10:55:20,485 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:55:20,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1095 states. [2020-12-23 10:55:20,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1095 to 1093. [2020-12-23 10:55:20,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1093 states. [2020-12-23 10:55:20,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 1700 transitions. [2020-12-23 10:55:20,540 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 1700 transitions. Word has length 64 [2020-12-23 10:55:20,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:55:20,541 INFO L481 AbstractCegarLoop]: Abstraction has 1093 states and 1700 transitions. [2020-12-23 10:55:20,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:55:20,541 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 1700 transitions. [2020-12-23 10:55:20,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-23 10:55:20,543 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:55:20,543 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] [2020-12-23 10:55:20,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 10:55:20,543 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:55:20,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:55:20,544 INFO L82 PathProgramCache]: Analyzing trace with hash -1673406722, now seen corresponding path program 1 times [2020-12-23 10:55:20,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:55:20,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300722379] [2020-12-23 10:55:20,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:55:20,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:55:20,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:55:20,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300722379] [2020-12-23 10:55:20,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:55:20,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 10:55:20,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762082853] [2020-12-23 10:55:20,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 10:55:20,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:55:20,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 10:55:20,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-23 10:55:20,771 INFO L87 Difference]: Start difference. First operand 1093 states and 1700 transitions. Second operand 7 states. [2020-12-23 10:55:21,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:55:21,261 INFO L93 Difference]: Finished difference Result 5663 states and 8841 transitions. [2020-12-23 10:55:21,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 10:55:21,262 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2020-12-23 10:55:21,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:55:21,289 INFO L225 Difference]: With dead ends: 5663 [2020-12-23 10:55:21,289 INFO L226 Difference]: Without dead ends: 4605 [2020-12-23 10:55:21,292 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-23 10:55:21,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4605 states. [2020-12-23 10:55:21,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4605 to 4597. [2020-12-23 10:55:21,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4597 states. [2020-12-23 10:55:21,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4597 states to 4597 states and 7156 transitions. [2020-12-23 10:55:21,658 INFO L78 Accepts]: Start accepts. Automaton has 4597 states and 7156 transitions. Word has length 65 [2020-12-23 10:55:21,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:55:21,660 INFO L481 AbstractCegarLoop]: Abstraction has 4597 states and 7156 transitions. [2020-12-23 10:55:21,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 10:55:21,660 INFO L276 IsEmpty]: Start isEmpty. Operand 4597 states and 7156 transitions. [2020-12-23 10:55:21,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-23 10:55:21,667 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:55:21,667 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, 1, 1] [2020-12-23 10:55:21,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 10:55:21,668 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:55:21,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:55:21,668 INFO L82 PathProgramCache]: Analyzing trace with hash 222361335, now seen corresponding path program 1 times [2020-12-23 10:55:21,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:55:21,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362810153] [2020-12-23 10:55:21,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:55:21,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:55:21,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:55:21,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362810153] [2020-12-23 10:55:21,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:55:21,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:55:21,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792605992] [2020-12-23 10:55:21,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:55:21,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:55:21,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:55:21,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:55:21,798 INFO L87 Difference]: Start difference. First operand 4597 states and 7156 transitions. Second operand 3 states. [2020-12-23 10:55:22,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:55:22,368 INFO L93 Difference]: Finished difference Result 12361 states and 19206 transitions. [2020-12-23 10:55:22,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:55:22,368 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2020-12-23 10:55:22,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:55:22,411 INFO L225 Difference]: With dead ends: 12361 [2020-12-23 10:55:22,411 INFO L226 Difference]: Without dead ends: 7799 [2020-12-23 10:55:22,422 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:55:22,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7799 states. [2020-12-23 10:55:22,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7799 to 7797. [2020-12-23 10:55:22,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7797 states. [2020-12-23 10:55:23,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7797 states to 7797 states and 12004 transitions. [2020-12-23 10:55:23,013 INFO L78 Accepts]: Start accepts. Automaton has 7797 states and 12004 transitions. Word has length 66 [2020-12-23 10:55:23,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:55:23,014 INFO L481 AbstractCegarLoop]: Abstraction has 7797 states and 12004 transitions. [2020-12-23 10:55:23,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:55:23,014 INFO L276 IsEmpty]: Start isEmpty. Operand 7797 states and 12004 transitions. [2020-12-23 10:55:23,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-23 10:55:23,015 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:55:23,015 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] [2020-12-23 10:55:23,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 10:55:23,016 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:55:23,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:55:23,017 INFO L82 PathProgramCache]: Analyzing trace with hash 376052341, now seen corresponding path program 1 times [2020-12-23 10:55:23,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:55:23,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771336187] [2020-12-23 10:55:23,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:55:23,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:55:23,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:55:23,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771336187] [2020-12-23 10:55:23,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:55:23,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 10:55:23,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448840815] [2020-12-23 10:55:23,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 10:55:23,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:55:23,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 10:55:23,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-23 10:55:23,113 INFO L87 Difference]: Start difference. First operand 7797 states and 12004 transitions. Second operand 6 states. [2020-12-23 10:55:24,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:55:24,767 INFO L93 Difference]: Finished difference Result 29259 states and 45031 transitions. [2020-12-23 10:55:24,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 10:55:24,768 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-12-23 10:55:24,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:55:24,871 INFO L225 Difference]: With dead ends: 29259 [2020-12-23 10:55:24,871 INFO L226 Difference]: Without dead ends: 21497 [2020-12-23 10:55:24,888 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-23 10:55:24,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21497 states. [2020-12-23 10:55:26,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21497 to 21493. [2020-12-23 10:55:26,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21493 states. [2020-12-23 10:55:26,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21493 states to 21493 states and 32916 transitions. [2020-12-23 10:55:26,477 INFO L78 Accepts]: Start accepts. Automaton has 21493 states and 32916 transitions. Word has length 67 [2020-12-23 10:55:26,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:55:26,477 INFO L481 AbstractCegarLoop]: Abstraction has 21493 states and 32916 transitions. [2020-12-23 10:55:26,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 10:55:26,478 INFO L276 IsEmpty]: Start isEmpty. Operand 21493 states and 32916 transitions. [2020-12-23 10:55:26,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-23 10:55:26,481 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:55:26,482 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] [2020-12-23 10:55:26,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 10:55:26,482 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:55:26,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:55:26,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1993557232, now seen corresponding path program 1 times [2020-12-23 10:55:26,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:55:26,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057173004] [2020-12-23 10:55:26,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:55:26,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:55:26,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:55:26,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057173004] [2020-12-23 10:55:26,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:55:26,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 10:55:26,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326170340] [2020-12-23 10:55:26,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 10:55:26,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:55:26,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 10:55:26,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-23 10:55:26,634 INFO L87 Difference]: Start difference. First operand 21493 states and 32916 transitions. Second operand 7 states. [2020-12-23 10:55:30,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:55:30,928 INFO L93 Difference]: Finished difference Result 112737 states and 172858 transitions. [2020-12-23 10:55:30,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 10:55:30,929 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 67 [2020-12-23 10:55:30,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:55:31,233 INFO L225 Difference]: With dead ends: 112737 [2020-12-23 10:55:31,233 INFO L226 Difference]: Without dead ends: 91279 [2020-12-23 10:55:31,301 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-12-23 10:55:31,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91279 states. [2020-12-23 10:55:34,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91279 to 42949. [2020-12-23 10:55:34,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42949 states. [2020-12-23 10:55:34,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42949 states to 42949 states and 64900 transitions. [2020-12-23 10:55:34,877 INFO L78 Accepts]: Start accepts. Automaton has 42949 states and 64900 transitions. Word has length 67 [2020-12-23 10:55:34,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:55:34,878 INFO L481 AbstractCegarLoop]: Abstraction has 42949 states and 64900 transitions. [2020-12-23 10:55:34,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 10:55:34,878 INFO L276 IsEmpty]: Start isEmpty. Operand 42949 states and 64900 transitions. [2020-12-23 10:55:34,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-23 10:55:34,879 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:55:34,879 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:55:34,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 10:55:34,879 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:55:34,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:55:34,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1651275811, now seen corresponding path program 1 times [2020-12-23 10:55:34,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:55:34,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818300652] [2020-12-23 10:55:34,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:55:34,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:55:34,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:55:34,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818300652] [2020-12-23 10:55:34,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:55:34,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 10:55:34,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479259227] [2020-12-23 10:55:34,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 10:55:34,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:55:34,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 10:55:34,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 10:55:34,993 INFO L87 Difference]: Start difference. First operand 42949 states and 64900 transitions. Second operand 5 states. [2020-12-23 10:55:39,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:55:39,507 INFO L93 Difference]: Finished difference Result 87655 states and 131557 transitions. [2020-12-23 10:55:39,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 10:55:39,508 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2020-12-23 10:55:39,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:55:39,689 INFO L225 Difference]: With dead ends: 87655 [2020-12-23 10:55:39,689 INFO L226 Difference]: Without dead ends: 87653 [2020-12-23 10:55:39,711 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-23 10:55:39,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87653 states. [2020-12-23 10:55:43,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87653 to 44741. [2020-12-23 10:55:43,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44741 states. [2020-12-23 10:55:43,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44741 states to 44741 states and 66692 transitions. [2020-12-23 10:55:43,125 INFO L78 Accepts]: Start accepts. Automaton has 44741 states and 66692 transitions. Word has length 68 [2020-12-23 10:55:43,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:55:43,125 INFO L481 AbstractCegarLoop]: Abstraction has 44741 states and 66692 transitions. [2020-12-23 10:55:43,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 10:55:43,126 INFO L276 IsEmpty]: Start isEmpty. Operand 44741 states and 66692 transitions. [2020-12-23 10:55:43,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-23 10:55:43,127 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:55:43,127 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:55:43,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 10:55:43,127 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:55:43,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:55:43,128 INFO L82 PathProgramCache]: Analyzing trace with hash -339484320, now seen corresponding path program 1 times [2020-12-23 10:55:43,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:55:43,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402913280] [2020-12-23 10:55:43,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:55:43,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:55:43,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:55:43,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402913280] [2020-12-23 10:55:43,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:55:43,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:55:43,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890534360] [2020-12-23 10:55:43,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:55:43,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:55:43,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:55:43,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:55:43,193 INFO L87 Difference]: Start difference. First operand 44741 states and 66692 transitions. Second operand 3 states. [2020-12-23 10:55:46,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:55:46,651 INFO L93 Difference]: Finished difference Result 97051 states and 144488 transitions. [2020-12-23 10:55:46,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:55:46,652 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2020-12-23 10:55:46,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:55:46,744 INFO L225 Difference]: With dead ends: 97051 [2020-12-23 10:55:46,744 INFO L226 Difference]: Without dead ends: 52345 [2020-12-23 10:55:46,804 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:55:46,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52345 states. [2020-12-23 10:55:50,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52345 to 52199. [2020-12-23 10:55:50,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52199 states. [2020-12-23 10:55:50,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52199 states to 52199 states and 77398 transitions. [2020-12-23 10:55:50,495 INFO L78 Accepts]: Start accepts. Automaton has 52199 states and 77398 transitions. Word has length 69 [2020-12-23 10:55:50,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:55:50,495 INFO L481 AbstractCegarLoop]: Abstraction has 52199 states and 77398 transitions. [2020-12-23 10:55:50,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:55:50,495 INFO L276 IsEmpty]: Start isEmpty. Operand 52199 states and 77398 transitions. [2020-12-23 10:55:50,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-12-23 10:55:50,518 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:55:50,518 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2020-12-23 10:55:50,518 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 10:55:50,519 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:55:50,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:55:50,519 INFO L82 PathProgramCache]: Analyzing trace with hash -1573259719, now seen corresponding path program 1 times [2020-12-23 10:55:50,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:55:50,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227703474] [2020-12-23 10:55:50,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:55:50,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:55:50,593 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:55:50,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227703474] [2020-12-23 10:55:50,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:55:50,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:55:50,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644268548] [2020-12-23 10:55:50,595 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:55:50,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:55:50,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:55:50,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:55:50,596 INFO L87 Difference]: Start difference. First operand 52199 states and 77398 transitions. Second operand 3 states. [2020-12-23 10:55:56,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:55:56,300 INFO L93 Difference]: Finished difference Result 139372 states and 206874 transitions. [2020-12-23 10:55:56,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:55:56,301 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 96 [2020-12-23 10:55:56,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:55:56,431 INFO L225 Difference]: With dead ends: 139372 [2020-12-23 10:55:56,431 INFO L226 Difference]: Without dead ends: 93546 [2020-12-23 10:55:56,472 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:55:56,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93546 states. [2020-12-23 10:56:01,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93546 to 80872. [2020-12-23 10:56:01,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80872 states. [2020-12-23 10:56:02,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80872 states to 80872 states and 119016 transitions. [2020-12-23 10:56:02,139 INFO L78 Accepts]: Start accepts. Automaton has 80872 states and 119016 transitions. Word has length 96 [2020-12-23 10:56:02,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:56:02,140 INFO L481 AbstractCegarLoop]: Abstraction has 80872 states and 119016 transitions. [2020-12-23 10:56:02,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:56:02,140 INFO L276 IsEmpty]: Start isEmpty. Operand 80872 states and 119016 transitions. [2020-12-23 10:56:02,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-12-23 10:56:02,172 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:56:02,173 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] [2020-12-23 10:56:02,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 10:56:02,173 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:56:02,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:56:02,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1725865046, now seen corresponding path program 1 times [2020-12-23 10:56:02,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:56:02,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403414125] [2020-12-23 10:56:02,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:56:02,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:56:02,448 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:56:02,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403414125] [2020-12-23 10:56:02,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501303323] [2020-12-23 10:56:02,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 10:56:02,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:56:02,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-23 10:56:02,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 10:56:02,861 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 10:56:02,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 10:56:02,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4] total 12 [2020-12-23 10:56:02,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913491550] [2020-12-23 10:56:02,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 10:56:02,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:56:02,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 10:56:02,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-12-23 10:56:02,864 INFO L87 Difference]: Start difference. First operand 80872 states and 119016 transitions. Second operand 12 states. [2020-12-23 10:56:46,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:56:46,544 INFO L93 Difference]: Finished difference Result 505344 states and 735348 transitions. [2020-12-23 10:56:46,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2020-12-23 10:56:46,544 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 96 [2020-12-23 10:56:46,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:56:47,738 INFO L225 Difference]: With dead ends: 505344 [2020-12-23 10:56:47,739 INFO L226 Difference]: Without dead ends: 430782 [2020-12-23 10:56:47,906 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3475 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1677, Invalid=7065, Unknown=0, NotChecked=0, Total=8742 [2020-12-23 10:56:48,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430782 states. [2020-12-23 10:57:07,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430782 to 195408. [2020-12-23 10:57:07,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195408 states. [2020-12-23 10:57:08,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195408 states to 195408 states and 284004 transitions. [2020-12-23 10:57:08,468 INFO L78 Accepts]: Start accepts. Automaton has 195408 states and 284004 transitions. Word has length 96 [2020-12-23 10:57:08,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:57:08,469 INFO L481 AbstractCegarLoop]: Abstraction has 195408 states and 284004 transitions. [2020-12-23 10:57:08,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 10:57:08,469 INFO L276 IsEmpty]: Start isEmpty. Operand 195408 states and 284004 transitions. [2020-12-23 10:57:08,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-12-23 10:57:08,535 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:57:08,535 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] [2020-12-23 10:57:08,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-23 10:57:08,749 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:57:08,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:57:08,751 INFO L82 PathProgramCache]: Analyzing trace with hash -2035229118, now seen corresponding path program 1 times [2020-12-23 10:57:08,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:57:08,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931423755] [2020-12-23 10:57:08,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:57:08,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:57:08,856 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-23 10:57:08,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931423755] [2020-12-23 10:57:08,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:57:08,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 10:57:08,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148380460] [2020-12-23 10:57:08,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 10:57:08,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:57:08,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 10:57:08,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-23 10:57:08,859 INFO L87 Difference]: Start difference. First operand 195408 states and 284004 transitions. Second operand 6 states.