/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 11:06:24,696 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 11:06:24,699 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 11:06:24,753 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 11:06:24,754 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 11:06:24,758 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 11:06:24,761 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 11:06:24,764 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 11:06:24,770 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 11:06:24,773 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 11:06:24,778 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 11:06:24,780 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 11:06:24,782 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 11:06:24,784 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 11:06:24,790 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 11:06:24,792 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 11:06:24,793 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 11:06:24,795 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 11:06:24,800 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 11:06:24,807 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 11:06:24,809 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 11:06:24,813 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 11:06:24,815 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 11:06:24,816 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 11:06:24,823 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 11:06:24,827 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 11:06:24,827 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 11:06:24,829 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 11:06:24,829 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 11:06:24,832 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 11:06:24,832 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 11:06:24,833 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 11:06:24,834 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 11:06:24,836 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 11:06:24,838 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 11:06:24,838 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 11:06:24,839 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 11:06:24,839 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 11:06:24,839 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 11:06:24,840 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 11:06:24,841 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 11:06:24,842 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 11:06:24,897 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 11:06:24,897 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 11:06:24,902 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 11:06:24,902 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 11:06:24,903 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 11:06:24,903 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 11:06:24,903 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 11:06:24,903 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 11:06:24,904 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 11:06:24,904 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 11:06:24,905 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 11:06:24,905 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 11:06:24,906 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 11:06:24,906 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 11:06:24,906 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 11:06:24,906 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 11:06:24,907 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 11:06:24,907 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 11:06:24,907 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 11:06:24,907 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 11:06:24,908 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 11:06:24,908 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 11:06:24,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 11:06:24,908 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 11:06:24,908 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 11:06:24,909 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 11:06:25,288 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 11:06:25,314 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 11:06:25,317 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 11:06:25,319 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 11:06:25,319 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 11:06:25,320 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-12-23 11:06:25,412 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/df14950af/a9d90e6902f244cd869eefef8b3efa0e/FLAGa5fcc9dc9 [2020-12-23 11:06:26,235 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 11:06:26,236 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-12-23 11:06:26,266 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/df14950af/a9d90e6902f244cd869eefef8b3efa0e/FLAGa5fcc9dc9 [2020-12-23 11:06:26,545 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/df14950af/a9d90e6902f244cd869eefef8b3efa0e [2020-12-23 11:06:26,549 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 11:06:26,553 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 11:06:26,555 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 11:06:26,555 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 11:06:26,559 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 11:06:26,560 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 11:06:26" (1/1) ... [2020-12-23 11:06:26,562 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79f6b3bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:06:26, skipping insertion in model container [2020-12-23 11:06:26,563 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 11:06:26" (1/1) ... [2020-12-23 11:06:26,575 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 11:06:26,644 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_2928~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~0,] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~0,] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~0,] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4__m4~0,] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_3019~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_1~0,] left hand side expression in assignment: lhs: VariableLHS[~assert__arg~0,] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~1,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~1,] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~1,] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~1,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~1,] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~1,] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4__m4~1,] left hand side expression in assignment: lhs: VariableLHS[~node4__m4~1,] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__tmp_3178_0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~__return_3186~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_2~0,] left hand side expression in assignment: lhs: VariableLHS[~assert__arg~1,] [2020-12-23 11:06:26,908 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c[6374,6387] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~2,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~2,] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~2,] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~2,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~2,] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~2,] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4__m4~2,] left hand side expression in assignment: lhs: VariableLHS[~node4__m4~2,] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__tmp_3178_0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_0~1,] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_0~1,] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~1,] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~1,] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~1,] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~1,] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~1,] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~1,] left hand side expression in assignment: lhs: VariableLHS[~__return_3113~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] [2020-12-23 11:06:26,992 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 11:06:27,007 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_2928~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~0,] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~0,] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~0,] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4__m4~0,] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_3019~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_1~0,] left hand side expression in assignment: lhs: VariableLHS[~assert__arg~0,] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~1,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~1,] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~1,] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~1,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~1,] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~1,] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4__m4~1,] left hand side expression in assignment: lhs: VariableLHS[~node4__m4~1,] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__tmp_3178_0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~__return_3186~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_2~0,] left hand side expression in assignment: lhs: VariableLHS[~assert__arg~1,] [2020-12-23 11:06:27,074 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c[6374,6387] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~2,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~2,] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~2,] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~2,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~2,] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~2,] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4__m4~2,] left hand side expression in assignment: lhs: VariableLHS[~node4__m4~2,] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__tmp_3178_0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_0~1,] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_0~1,] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~1,] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~1,] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~1,] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~1,] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~1,] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~1,] left hand side expression in assignment: lhs: VariableLHS[~__return_3113~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] [2020-12-23 11:06:27,153 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 11:06:27,188 INFO L208 MainTranslator]: Completed translation [2020-12-23 11:06:27,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:06:27 WrapperNode [2020-12-23 11:06:27,190 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 11:06:27,192 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 11:06:27,192 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 11:06:27,192 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 11:06:27,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:06:27" (1/1) ... [2020-12-23 11:06:27,228 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:06:27" (1/1) ... [2020-12-23 11:06:27,293 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 11:06:27,294 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 11:06:27,294 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 11:06:27,294 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 11:06:27,304 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:06:27" (1/1) ... [2020-12-23 11:06:27,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:06:27" (1/1) ... [2020-12-23 11:06:27,309 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:06:27" (1/1) ... [2020-12-23 11:06:27,309 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:06:27" (1/1) ... [2020-12-23 11:06:27,318 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:06:27" (1/1) ... [2020-12-23 11:06:27,324 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:06:27" (1/1) ... [2020-12-23 11:06:27,328 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:06:27" (1/1) ... [2020-12-23 11:06:27,333 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 11:06:27,334 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 11:06:27,334 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 11:06:27,334 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 11:06:27,335 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:06:27" (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 11:06:27,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 11:06:27,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 11:06:27,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 11:06:27,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 11:06:28,340 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 11:06:28,340 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-23 11:06:28,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 11:06:28 BoogieIcfgContainer [2020-12-23 11:06:28,343 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 11:06:28,345 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 11:06:28,345 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 11:06:28,349 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 11:06:28,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 11:06:26" (1/3) ... [2020-12-23 11:06:28,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20b08b2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 11:06:28, skipping insertion in model container [2020-12-23 11:06:28,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:06:27" (2/3) ... [2020-12-23 11:06:28,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20b08b2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 11:06:28, skipping insertion in model container [2020-12-23 11:06:28,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 11:06:28" (3/3) ... [2020-12-23 11:06:28,352 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-12-23 11:06:28,359 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 11:06:28,364 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 11:06:28,384 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 11:06:28,413 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 11:06:28,414 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 11:06:28,414 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 11:06:28,414 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 11:06:28,414 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 11:06:28,415 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 11:06:28,415 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 11:06:28,415 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 11:06:28,434 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states. [2020-12-23 11:06:28,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-23 11:06:28,443 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:06:28,444 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 11:06:28,445 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:06:28,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:06:28,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1296157629, now seen corresponding path program 1 times [2020-12-23 11:06:28,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:06:28,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460614730] [2020-12-23 11:06:28,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:06:28,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:06:28,986 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 11:06:28,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460614730] [2020-12-23 11:06:28,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:06:28,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:06:28,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242965252] [2020-12-23 11:06:28,997 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:06:28,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:06:29,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:06:29,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:06:29,015 INFO L87 Difference]: Start difference. First operand 123 states. Second operand 3 states. [2020-12-23 11:06:29,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:06:29,125 INFO L93 Difference]: Finished difference Result 243 states and 400 transitions. [2020-12-23 11:06:29,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:06:29,127 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2020-12-23 11:06:29,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:06:29,152 INFO L225 Difference]: With dead ends: 243 [2020-12-23 11:06:29,152 INFO L226 Difference]: Without dead ends: 183 [2020-12-23 11:06:29,158 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 11:06:29,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-12-23 11:06:29,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 181. [2020-12-23 11:06:29,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-12-23 11:06:29,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 260 transitions. [2020-12-23 11:06:29,222 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 260 transitions. Word has length 62 [2020-12-23 11:06:29,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:06:29,223 INFO L481 AbstractCegarLoop]: Abstraction has 181 states and 260 transitions. [2020-12-23 11:06:29,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:06:29,223 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 260 transitions. [2020-12-23 11:06:29,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-23 11:06:29,226 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:06:29,226 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 11:06:29,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 11:06:29,227 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:06:29,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:06:29,228 INFO L82 PathProgramCache]: Analyzing trace with hash -574954446, now seen corresponding path program 1 times [2020-12-23 11:06:29,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:06:29,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269463703] [2020-12-23 11:06:29,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:06:29,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:06:29,424 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 11:06:29,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269463703] [2020-12-23 11:06:29,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:06:29,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 11:06:29,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949632413] [2020-12-23 11:06:29,428 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 11:06:29,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:06:29,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 11:06:29,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 11:06:29,429 INFO L87 Difference]: Start difference. First operand 181 states and 260 transitions. Second operand 5 states. [2020-12-23 11:06:29,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:06:29,617 INFO L93 Difference]: Finished difference Result 332 states and 489 transitions. [2020-12-23 11:06:29,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 11:06:29,617 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-12-23 11:06:29,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:06:29,620 INFO L225 Difference]: With dead ends: 332 [2020-12-23 11:06:29,620 INFO L226 Difference]: Without dead ends: 181 [2020-12-23 11:06:29,622 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 11:06:29,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-12-23 11:06:29,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2020-12-23 11:06:29,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-12-23 11:06:29,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 257 transitions. [2020-12-23 11:06:29,669 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 257 transitions. Word has length 64 [2020-12-23 11:06:29,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:06:29,670 INFO L481 AbstractCegarLoop]: Abstraction has 181 states and 257 transitions. [2020-12-23 11:06:29,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 11:06:29,670 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 257 transitions. [2020-12-23 11:06:29,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-23 11:06:29,675 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:06:29,675 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 11:06:29,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 11:06:29,679 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:06:29,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:06:29,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1750156800, now seen corresponding path program 1 times [2020-12-23 11:06:29,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:06:29,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883707051] [2020-12-23 11:06:29,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:06:29,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:06:29,831 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 11:06:29,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883707051] [2020-12-23 11:06:29,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:06:29,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 11:06:29,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650417529] [2020-12-23 11:06:29,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 11:06:29,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:06:29,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 11:06:29,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-23 11:06:29,847 INFO L87 Difference]: Start difference. First operand 181 states and 257 transitions. Second operand 6 states. [2020-12-23 11:06:30,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:06:30,091 INFO L93 Difference]: Finished difference Result 416 states and 615 transitions. [2020-12-23 11:06:30,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 11:06:30,091 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-12-23 11:06:30,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:06:30,098 INFO L225 Difference]: With dead ends: 416 [2020-12-23 11:06:30,098 INFO L226 Difference]: Without dead ends: 277 [2020-12-23 11:06:30,103 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 11:06:30,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-12-23 11:06:30,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 275. [2020-12-23 11:06:30,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-12-23 11:06:30,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 399 transitions. [2020-12-23 11:06:30,171 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 399 transitions. Word has length 65 [2020-12-23 11:06:30,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:06:30,172 INFO L481 AbstractCegarLoop]: Abstraction has 275 states and 399 transitions. [2020-12-23 11:06:30,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 11:06:30,175 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 399 transitions. [2020-12-23 11:06:30,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-23 11:06:30,179 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:06:30,180 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 11:06:30,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 11:06:30,181 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:06:30,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:06:30,182 INFO L82 PathProgramCache]: Analyzing trace with hash 693263334, now seen corresponding path program 1 times [2020-12-23 11:06:30,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:06:30,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98032936] [2020-12-23 11:06:30,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:06:30,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:06:30,320 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 11:06:30,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98032936] [2020-12-23 11:06:30,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:06:30,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 11:06:30,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614861518] [2020-12-23 11:06:30,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 11:06:30,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:06:30,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 11:06:30,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 11:06:30,330 INFO L87 Difference]: Start difference. First operand 275 states and 399 transitions. Second operand 5 states. [2020-12-23 11:06:30,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:06:30,498 INFO L93 Difference]: Finished difference Result 512 states and 758 transitions. [2020-12-23 11:06:30,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 11:06:30,500 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 66 [2020-12-23 11:06:30,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:06:30,503 INFO L225 Difference]: With dead ends: 512 [2020-12-23 11:06:30,503 INFO L226 Difference]: Without dead ends: 275 [2020-12-23 11:06:30,505 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 11:06:30,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-12-23 11:06:30,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2020-12-23 11:06:30,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-12-23 11:06:30,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 394 transitions. [2020-12-23 11:06:30,539 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 394 transitions. Word has length 66 [2020-12-23 11:06:30,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:06:30,540 INFO L481 AbstractCegarLoop]: Abstraction has 275 states and 394 transitions. [2020-12-23 11:06:30,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 11:06:30,540 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 394 transitions. [2020-12-23 11:06:30,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-23 11:06:30,546 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:06:30,547 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 11:06:30,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 11:06:30,547 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:06:30,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:06:30,548 INFO L82 PathProgramCache]: Analyzing trace with hash 860241460, now seen corresponding path program 1 times [2020-12-23 11:06:30,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:06:30,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091699295] [2020-12-23 11:06:30,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:06:30,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:06:30,660 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 11:06:30,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091699295] [2020-12-23 11:06:30,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:06:30,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 11:06:30,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185193563] [2020-12-23 11:06:30,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 11:06:30,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:06:30,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 11:06:30,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 11:06:30,663 INFO L87 Difference]: Start difference. First operand 275 states and 394 transitions. Second operand 5 states. [2020-12-23 11:06:30,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:06:30,797 INFO L93 Difference]: Finished difference Result 516 states and 753 transitions. [2020-12-23 11:06:30,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 11:06:30,797 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2020-12-23 11:06:30,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:06:30,800 INFO L225 Difference]: With dead ends: 516 [2020-12-23 11:06:30,800 INFO L226 Difference]: Without dead ends: 275 [2020-12-23 11:06:30,801 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 11:06:30,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-12-23 11:06:30,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2020-12-23 11:06:30,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-12-23 11:06:30,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 389 transitions. [2020-12-23 11:06:30,824 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 389 transitions. Word has length 67 [2020-12-23 11:06:30,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:06:30,824 INFO L481 AbstractCegarLoop]: Abstraction has 275 states and 389 transitions. [2020-12-23 11:06:30,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 11:06:30,824 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 389 transitions. [2020-12-23 11:06:30,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-23 11:06:30,825 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:06:30,826 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 11:06:30,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 11:06:30,826 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:06:30,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:06:30,827 INFO L82 PathProgramCache]: Analyzing trace with hash -227572070, now seen corresponding path program 1 times [2020-12-23 11:06:30,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:06:30,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338374307] [2020-12-23 11:06:30,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:06:30,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:06:30,954 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 11:06:30,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338374307] [2020-12-23 11:06:30,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:06:30,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 11:06:30,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402276445] [2020-12-23 11:06:30,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 11:06:30,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:06:30,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 11:06:30,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-23 11:06:30,959 INFO L87 Difference]: Start difference. First operand 275 states and 389 transitions. Second operand 6 states. [2020-12-23 11:06:31,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:06:31,152 INFO L93 Difference]: Finished difference Result 1124 states and 1656 transitions. [2020-12-23 11:06:31,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 11:06:31,152 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-12-23 11:06:31,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:06:31,161 INFO L225 Difference]: With dead ends: 1124 [2020-12-23 11:06:31,161 INFO L226 Difference]: Without dead ends: 936 [2020-12-23 11:06:31,162 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-23 11:06:31,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2020-12-23 11:06:31,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 367. [2020-12-23 11:06:31,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2020-12-23 11:06:31,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 528 transitions. [2020-12-23 11:06:31,207 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 528 transitions. Word has length 68 [2020-12-23 11:06:31,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:06:31,209 INFO L481 AbstractCegarLoop]: Abstraction has 367 states and 528 transitions. [2020-12-23 11:06:31,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 11:06:31,209 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 528 transitions. [2020-12-23 11:06:31,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-23 11:06:31,210 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:06:31,210 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 11:06:31,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 11:06:31,211 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:06:31,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:06:31,212 INFO L82 PathProgramCache]: Analyzing trace with hash 92823086, now seen corresponding path program 1 times [2020-12-23 11:06:31,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:06:31,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050265044] [2020-12-23 11:06:31,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:06:31,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:06:31,340 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 11:06:31,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050265044] [2020-12-23 11:06:31,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:06:31,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 11:06:31,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078544773] [2020-12-23 11:06:31,345 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 11:06:31,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:06:31,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 11:06:31,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-23 11:06:31,346 INFO L87 Difference]: Start difference. First operand 367 states and 528 transitions. Second operand 6 states. [2020-12-23 11:06:31,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:06:31,580 INFO L93 Difference]: Finished difference Result 1188 states and 1753 transitions. [2020-12-23 11:06:31,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 11:06:31,581 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-12-23 11:06:31,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:06:31,589 INFO L225 Difference]: With dead ends: 1188 [2020-12-23 11:06:31,589 INFO L226 Difference]: Without dead ends: 1000 [2020-12-23 11:06:31,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-23 11:06:31,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1000 states. [2020-12-23 11:06:31,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1000 to 585. [2020-12-23 11:06:31,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2020-12-23 11:06:31,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 858 transitions. [2020-12-23 11:06:31,659 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 858 transitions. Word has length 68 [2020-12-23 11:06:31,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:06:31,659 INFO L481 AbstractCegarLoop]: Abstraction has 585 states and 858 transitions. [2020-12-23 11:06:31,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 11:06:31,659 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 858 transitions. [2020-12-23 11:06:31,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-23 11:06:31,660 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:06:31,660 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 11:06:31,661 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 11:06:31,661 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:06:31,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:06:31,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1958096002, now seen corresponding path program 1 times [2020-12-23 11:06:31,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:06:31,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783309771] [2020-12-23 11:06:31,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:06:31,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:06:31,760 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 11:06:31,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783309771] [2020-12-23 11:06:31,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:06:31,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 11:06:31,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077967855] [2020-12-23 11:06:31,761 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 11:06:31,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:06:31,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 11:06:31,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-23 11:06:31,763 INFO L87 Difference]: Start difference. First operand 585 states and 858 transitions. Second operand 6 states. [2020-12-23 11:06:31,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:06:31,971 INFO L93 Difference]: Finished difference Result 1267 states and 1872 transitions. [2020-12-23 11:06:31,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 11:06:31,972 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-12-23 11:06:31,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:06:31,978 INFO L225 Difference]: With dead ends: 1267 [2020-12-23 11:06:31,978 INFO L226 Difference]: Without dead ends: 1079 [2020-12-23 11:06:31,979 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-23 11:06:31,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2020-12-23 11:06:32,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 683. [2020-12-23 11:06:32,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 683 states. [2020-12-23 11:06:32,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1006 transitions. [2020-12-23 11:06:32,075 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1006 transitions. Word has length 68 [2020-12-23 11:06:32,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:06:32,076 INFO L481 AbstractCegarLoop]: Abstraction has 683 states and 1006 transitions. [2020-12-23 11:06:32,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 11:06:32,076 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1006 transitions. [2020-12-23 11:06:32,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-23 11:06:32,079 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:06:32,079 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 11:06:32,080 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 11:06:32,080 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:06:32,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:06:32,080 INFO L82 PathProgramCache]: Analyzing trace with hash -841212636, now seen corresponding path program 1 times [2020-12-23 11:06:32,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:06:32,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677259824] [2020-12-23 11:06:32,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:06:32,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:06:32,133 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 11:06:32,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677259824] [2020-12-23 11:06:32,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:06:32,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:06:32,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173024335] [2020-12-23 11:06:32,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:06:32,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:06:32,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:06:32,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:06:32,142 INFO L87 Difference]: Start difference. First operand 683 states and 1006 transitions. Second operand 3 states. [2020-12-23 11:06:32,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:06:32,299 INFO L93 Difference]: Finished difference Result 1767 states and 2620 transitions. [2020-12-23 11:06:32,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:06:32,300 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2020-12-23 11:06:32,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:06:32,306 INFO L225 Difference]: With dead ends: 1767 [2020-12-23 11:06:32,306 INFO L226 Difference]: Without dead ends: 1191 [2020-12-23 11:06:32,308 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 11:06:32,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1191 states. [2020-12-23 11:06:32,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1191 to 1189. [2020-12-23 11:06:32,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1189 states. [2020-12-23 11:06:32,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1189 states to 1189 states and 1730 transitions. [2020-12-23 11:06:32,441 INFO L78 Accepts]: Start accepts. Automaton has 1189 states and 1730 transitions. Word has length 68 [2020-12-23 11:06:32,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:06:32,442 INFO L481 AbstractCegarLoop]: Abstraction has 1189 states and 1730 transitions. [2020-12-23 11:06:32,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:06:32,442 INFO L276 IsEmpty]: Start isEmpty. Operand 1189 states and 1730 transitions. [2020-12-23 11:06:32,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-23 11:06:32,443 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:06:32,443 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:06:32,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 11:06:32,444 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:06:32,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:06:32,445 INFO L82 PathProgramCache]: Analyzing trace with hash -670539997, now seen corresponding path program 1 times [2020-12-23 11:06:32,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:06:32,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003571523] [2020-12-23 11:06:32,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:06:32,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:06:32,513 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 11:06:32,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003571523] [2020-12-23 11:06:32,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:06:32,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:06:32,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201533727] [2020-12-23 11:06:32,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:06:32,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:06:32,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:06:32,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:06:32,521 INFO L87 Difference]: Start difference. First operand 1189 states and 1730 transitions. Second operand 3 states. [2020-12-23 11:06:32,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:06:32,752 INFO L93 Difference]: Finished difference Result 2993 states and 4380 transitions. [2020-12-23 11:06:32,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:06:32,753 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2020-12-23 11:06:32,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:06:32,766 INFO L225 Difference]: With dead ends: 2993 [2020-12-23 11:06:32,767 INFO L226 Difference]: Without dead ends: 1911 [2020-12-23 11:06:32,769 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 11:06:32,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1911 states. [2020-12-23 11:06:32,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1911 to 1909. [2020-12-23 11:06:32,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1909 states. [2020-12-23 11:06:33,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1909 states to 1909 states and 2766 transitions. [2020-12-23 11:06:33,003 INFO L78 Accepts]: Start accepts. Automaton has 1909 states and 2766 transitions. Word has length 68 [2020-12-23 11:06:33,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:06:33,004 INFO L481 AbstractCegarLoop]: Abstraction has 1909 states and 2766 transitions. [2020-12-23 11:06:33,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:06:33,004 INFO L276 IsEmpty]: Start isEmpty. Operand 1909 states and 2766 transitions. [2020-12-23 11:06:33,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-23 11:06:33,005 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:06:33,005 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 11:06:33,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 11:06:33,005 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:06:33,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:06:33,006 INFO L82 PathProgramCache]: Analyzing trace with hash 493156882, now seen corresponding path program 1 times [2020-12-23 11:06:33,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:06:33,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698977416] [2020-12-23 11:06:33,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:06:33,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:06:33,133 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 11:06:33,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698977416] [2020-12-23 11:06:33,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:06:33,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 11:06:33,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239826380] [2020-12-23 11:06:33,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 11:06:33,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:06:33,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 11:06:33,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-23 11:06:33,137 INFO L87 Difference]: Start difference. First operand 1909 states and 2766 transitions. Second operand 6 states. [2020-12-23 11:06:33,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:06:33,567 INFO L93 Difference]: Finished difference Result 3991 states and 5806 transitions. [2020-12-23 11:06:33,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 11:06:33,567 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-12-23 11:06:33,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:06:33,585 INFO L225 Difference]: With dead ends: 3991 [2020-12-23 11:06:33,585 INFO L226 Difference]: Without dead ends: 3457 [2020-12-23 11:06:33,587 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-23 11:06:33,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3457 states. [2020-12-23 11:06:33,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3457 to 2283. [2020-12-23 11:06:33,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2283 states. [2020-12-23 11:06:33,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2283 states to 2283 states and 3312 transitions. [2020-12-23 11:06:33,863 INFO L78 Accepts]: Start accepts. Automaton has 2283 states and 3312 transitions. Word has length 68 [2020-12-23 11:06:33,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:06:33,863 INFO L481 AbstractCegarLoop]: Abstraction has 2283 states and 3312 transitions. [2020-12-23 11:06:33,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 11:06:33,864 INFO L276 IsEmpty]: Start isEmpty. Operand 2283 states and 3312 transitions. [2020-12-23 11:06:33,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-23 11:06:33,865 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:06:33,865 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 11:06:33,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 11:06:33,866 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:06:33,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:06:33,866 INFO L82 PathProgramCache]: Analyzing trace with hash -147544852, now seen corresponding path program 1 times [2020-12-23 11:06:33,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:06:33,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326613880] [2020-12-23 11:06:33,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:06:33,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:06:33,971 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 11:06:33,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326613880] [2020-12-23 11:06:33,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:06:33,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 11:06:33,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378034301] [2020-12-23 11:06:33,973 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 11:06:33,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:06:33,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 11:06:33,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 11:06:33,974 INFO L87 Difference]: Start difference. First operand 2283 states and 3312 transitions. Second operand 4 states. [2020-12-23 11:06:34,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:06:34,462 INFO L93 Difference]: Finished difference Result 5477 states and 7976 transitions. [2020-12-23 11:06:34,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 11:06:34,463 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 69 [2020-12-23 11:06:34,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:06:34,478 INFO L225 Difference]: With dead ends: 5477 [2020-12-23 11:06:34,479 INFO L226 Difference]: Without dead ends: 3313 [2020-12-23 11:06:34,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 11:06:34,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3313 states. [2020-12-23 11:06:34,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3313 to 3311. [2020-12-23 11:06:34,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3311 states. [2020-12-23 11:06:34,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3311 states to 3311 states and 4784 transitions. [2020-12-23 11:06:34,880 INFO L78 Accepts]: Start accepts. Automaton has 3311 states and 4784 transitions. Word has length 69 [2020-12-23 11:06:34,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:06:34,880 INFO L481 AbstractCegarLoop]: Abstraction has 3311 states and 4784 transitions. [2020-12-23 11:06:34,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 11:06:34,881 INFO L276 IsEmpty]: Start isEmpty. Operand 3311 states and 4784 transitions. [2020-12-23 11:06:34,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-23 11:06:34,882 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:06:34,882 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 11:06:34,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-23 11:06:34,883 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:06:34,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:06:34,884 INFO L82 PathProgramCache]: Analyzing trace with hash 686187248, now seen corresponding path program 1 times [2020-12-23 11:06:34,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:06:34,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099105384] [2020-12-23 11:06:34,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:06:34,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:06:34,972 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 11:06:34,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099105384] [2020-12-23 11:06:34,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:06:34,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 11:06:34,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134298821] [2020-12-23 11:06:34,973 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 11:06:34,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:06:34,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 11:06:34,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 11:06:34,975 INFO L87 Difference]: Start difference. First operand 3311 states and 4784 transitions. Second operand 5 states. [2020-12-23 11:06:35,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:06:35,512 INFO L93 Difference]: Finished difference Result 4990 states and 7206 transitions. [2020-12-23 11:06:35,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 11:06:35,513 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-12-23 11:06:35,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:06:35,536 INFO L225 Difference]: With dead ends: 4990 [2020-12-23 11:06:35,536 INFO L226 Difference]: Without dead ends: 4988 [2020-12-23 11:06:35,539 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 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 11:06:35,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4988 states. [2020-12-23 11:06:35,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4988 to 3331. [2020-12-23 11:06:35,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3331 states. [2020-12-23 11:06:35,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3331 states to 3331 states and 4780 transitions. [2020-12-23 11:06:35,943 INFO L78 Accepts]: Start accepts. Automaton has 3331 states and 4780 transitions. Word has length 69 [2020-12-23 11:06:35,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:06:35,943 INFO L481 AbstractCegarLoop]: Abstraction has 3331 states and 4780 transitions. [2020-12-23 11:06:35,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 11:06:35,944 INFO L276 IsEmpty]: Start isEmpty. Operand 3331 states and 4780 transitions. [2020-12-23 11:06:35,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-23 11:06:35,944 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:06:35,945 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:06:35,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-23 11:06:35,945 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:06:35,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:06:35,946 INFO L82 PathProgramCache]: Analyzing trace with hash 158979165, now seen corresponding path program 1 times [2020-12-23 11:06:35,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:06:35,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643841583] [2020-12-23 11:06:35,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:06:35,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:06:36,181 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 11:06:36,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643841583] [2020-12-23 11:06:36,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:06:36,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-23 11:06:36,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675537093] [2020-12-23 11:06:36,183 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 11:06:36,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:06:36,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 11:06:36,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-12-23 11:06:36,184 INFO L87 Difference]: Start difference. First operand 3331 states and 4780 transitions. Second operand 10 states. [2020-12-23 11:06:37,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:06:37,796 INFO L93 Difference]: Finished difference Result 9806 states and 14048 transitions. [2020-12-23 11:06:37,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-23 11:06:37,797 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 70 [2020-12-23 11:06:37,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:06:37,829 INFO L225 Difference]: With dead ends: 9806 [2020-12-23 11:06:37,829 INFO L226 Difference]: Without dead ends: 6555 [2020-12-23 11:06:37,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2020-12-23 11:06:37,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6555 states. [2020-12-23 11:06:38,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6555 to 3331. [2020-12-23 11:06:38,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3331 states. [2020-12-23 11:06:38,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3331 states to 3331 states and 4778 transitions. [2020-12-23 11:06:38,367 INFO L78 Accepts]: Start accepts. Automaton has 3331 states and 4778 transitions. Word has length 70 [2020-12-23 11:06:38,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:06:38,368 INFO L481 AbstractCegarLoop]: Abstraction has 3331 states and 4778 transitions. [2020-12-23 11:06:38,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 11:06:38,368 INFO L276 IsEmpty]: Start isEmpty. Operand 3331 states and 4778 transitions. [2020-12-23 11:06:38,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-23 11:06:38,371 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:06:38,371 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:06:38,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-23 11:06:38,372 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:06:38,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:06:38,372 INFO L82 PathProgramCache]: Analyzing trace with hash 559312961, now seen corresponding path program 1 times [2020-12-23 11:06:38,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:06:38,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821269500] [2020-12-23 11:06:38,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:06:38,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:06:38,585 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 11:06:38,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821269500] [2020-12-23 11:06:38,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:06:38,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-23 11:06:38,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642078312] [2020-12-23 11:06:38,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 11:06:38,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:06:38,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 11:06:38,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-23 11:06:38,587 INFO L87 Difference]: Start difference. First operand 3331 states and 4778 transitions. Second operand 10 states. [2020-12-23 11:06:40,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:06:40,432 INFO L93 Difference]: Finished difference Result 9933 states and 14218 transitions. [2020-12-23 11:06:40,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-23 11:06:40,433 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 70 [2020-12-23 11:06:40,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:06:40,450 INFO L225 Difference]: With dead ends: 9933 [2020-12-23 11:06:40,451 INFO L226 Difference]: Without dead ends: 6716 [2020-12-23 11:06:40,456 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=127, Invalid=335, Unknown=0, NotChecked=0, Total=462 [2020-12-23 11:06:40,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6716 states. [2020-12-23 11:06:41,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6716 to 3331. [2020-12-23 11:06:41,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3331 states. [2020-12-23 11:06:41,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3331 states to 3331 states and 4773 transitions. [2020-12-23 11:06:41,072 INFO L78 Accepts]: Start accepts. Automaton has 3331 states and 4773 transitions. Word has length 70 [2020-12-23 11:06:41,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:06:41,073 INFO L481 AbstractCegarLoop]: Abstraction has 3331 states and 4773 transitions. [2020-12-23 11:06:41,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 11:06:41,073 INFO L276 IsEmpty]: Start isEmpty. Operand 3331 states and 4773 transitions. [2020-12-23 11:06:41,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-23 11:06:41,074 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:06:41,074 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:06:41,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-23 11:06:41,075 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:06:41,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:06:41,075 INFO L82 PathProgramCache]: Analyzing trace with hash -761151707, now seen corresponding path program 1 times [2020-12-23 11:06:41,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:06:41,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488885230] [2020-12-23 11:06:41,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:06:41,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:06:41,347 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 11:06:41,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488885230] [2020-12-23 11:06:41,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:06:41,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 11:06:41,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835476639] [2020-12-23 11:06:41,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 11:06:41,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:06:41,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 11:06:41,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-12-23 11:06:41,349 INFO L87 Difference]: Start difference. First operand 3331 states and 4773 transitions. Second operand 9 states. [2020-12-23 11:06:42,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:06:42,574 INFO L93 Difference]: Finished difference Result 8040 states and 11545 transitions. [2020-12-23 11:06:42,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 11:06:42,574 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-12-23 11:06:42,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:06:42,583 INFO L225 Difference]: With dead ends: 8040 [2020-12-23 11:06:42,583 INFO L226 Difference]: Without dead ends: 4956 [2020-12-23 11:06:42,587 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2020-12-23 11:06:42,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4956 states. [2020-12-23 11:06:43,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4956 to 3331. [2020-12-23 11:06:43,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3331 states. [2020-12-23 11:06:43,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3331 states to 3331 states and 4772 transitions. [2020-12-23 11:06:43,035 INFO L78 Accepts]: Start accepts. Automaton has 3331 states and 4772 transitions. Word has length 70 [2020-12-23 11:06:43,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:06:43,035 INFO L481 AbstractCegarLoop]: Abstraction has 3331 states and 4772 transitions. [2020-12-23 11:06:43,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 11:06:43,035 INFO L276 IsEmpty]: Start isEmpty. Operand 3331 states and 4772 transitions. [2020-12-23 11:06:43,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-23 11:06:43,036 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:06:43,036 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:06:43,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-23 11:06:43,037 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:06:43,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:06:43,037 INFO L82 PathProgramCache]: Analyzing trace with hash -795660249, now seen corresponding path program 1 times [2020-12-23 11:06:43,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:06:43,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636972289] [2020-12-23 11:06:43,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:06:43,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:06:43,238 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 11:06:43,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636972289] [2020-12-23 11:06:43,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:06:43,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-23 11:06:43,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112232698] [2020-12-23 11:06:43,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 11:06:43,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:06:43,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 11:06:43,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-12-23 11:06:43,241 INFO L87 Difference]: Start difference. First operand 3331 states and 4772 transitions. Second operand 10 states. [2020-12-23 11:06:45,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:06:45,031 INFO L93 Difference]: Finished difference Result 9967 states and 14256 transitions. [2020-12-23 11:06:45,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-23 11:06:45,032 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 71 [2020-12-23 11:06:45,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:06:45,044 INFO L225 Difference]: With dead ends: 9967 [2020-12-23 11:06:45,044 INFO L226 Difference]: Without dead ends: 6726 [2020-12-23 11:06:45,050 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2020-12-23 11:06:45,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6726 states. [2020-12-23 11:06:45,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6726 to 3331. [2020-12-23 11:06:45,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3331 states. [2020-12-23 11:06:45,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3331 states to 3331 states and 4768 transitions. [2020-12-23 11:06:45,611 INFO L78 Accepts]: Start accepts. Automaton has 3331 states and 4768 transitions. Word has length 71 [2020-12-23 11:06:45,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:06:45,611 INFO L481 AbstractCegarLoop]: Abstraction has 3331 states and 4768 transitions. [2020-12-23 11:06:45,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 11:06:45,611 INFO L276 IsEmpty]: Start isEmpty. Operand 3331 states and 4768 transitions. [2020-12-23 11:06:45,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-23 11:06:45,612 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:06:45,612 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:06:45,613 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-23 11:06:45,613 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:06:45,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:06:45,613 INFO L82 PathProgramCache]: Analyzing trace with hash -1977550344, now seen corresponding path program 1 times [2020-12-23 11:06:45,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:06:45,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666510556] [2020-12-23 11:06:45,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:06:45,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:06:47,181 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 11:06:47,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666510556] [2020-12-23 11:06:47,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:06:47,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2020-12-23 11:06:47,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679079216] [2020-12-23 11:06:47,183 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-12-23 11:06:47,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:06:47,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-12-23 11:06:47,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=682, Unknown=0, NotChecked=0, Total=756 [2020-12-23 11:06:47,184 INFO L87 Difference]: Start difference. First operand 3331 states and 4768 transitions. Second operand 28 states. [2020-12-23 11:06:47,575 WARN L197 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 105 [2020-12-23 11:06:48,171 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 37 [2020-12-23 11:06:48,338 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 38 [2020-12-23 11:06:48,521 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2020-12-23 11:06:48,854 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2020-12-23 11:06:49,096 WARN L197 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2020-12-23 11:06:49,388 WARN L197 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2020-12-23 11:06:49,749 WARN L197 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 88 [2020-12-23 11:06:50,173 WARN L197 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 99 [2020-12-23 11:06:50,657 WARN L197 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 113 [2020-12-23 11:06:51,255 WARN L197 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 129 [2020-12-23 11:06:51,521 WARN L197 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2020-12-23 11:06:51,783 WARN L197 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2020-12-23 11:06:54,062 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2020-12-23 11:06:56,501 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2020-12-23 11:06:57,892 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 42 [2020-12-23 11:07:00,315 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 34 [2020-12-23 11:07:02,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:07:02,354 INFO L93 Difference]: Finished difference Result 26857 states and 38686 transitions. [2020-12-23 11:07:02,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-12-23 11:07:02,355 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 72 [2020-12-23 11:07:02,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:07:02,405 INFO L225 Difference]: With dead ends: 26857 [2020-12-23 11:07:02,406 INFO L226 Difference]: Without dead ends: 26065 [2020-12-23 11:07:02,417 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 819 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=618, Invalid=3542, Unknown=0, NotChecked=0, Total=4160 [2020-12-23 11:07:02,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26065 states. [2020-12-23 11:07:03,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26065 to 3356. [2020-12-23 11:07:03,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3356 states. [2020-12-23 11:07:03,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3356 states to 3356 states and 4801 transitions. [2020-12-23 11:07:03,432 INFO L78 Accepts]: Start accepts. Automaton has 3356 states and 4801 transitions. Word has length 72 [2020-12-23 11:07:03,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:07:03,432 INFO L481 AbstractCegarLoop]: Abstraction has 3356 states and 4801 transitions. [2020-12-23 11:07:03,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-12-23 11:07:03,432 INFO L276 IsEmpty]: Start isEmpty. Operand 3356 states and 4801 transitions. [2020-12-23 11:07:03,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-23 11:07:03,433 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:07:03,434 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:07:03,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-23 11:07:03,434 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:07:03,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:07:03,435 INFO L82 PathProgramCache]: Analyzing trace with hash 821766808, now seen corresponding path program 1 times [2020-12-23 11:07:03,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:07:03,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052095952] [2020-12-23 11:07:03,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:07:03,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:07:04,780 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 11:07:04,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052095952] [2020-12-23 11:07:04,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:07:04,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2020-12-23 11:07:04,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621599929] [2020-12-23 11:07:04,782 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-12-23 11:07:04,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:07:04,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-12-23 11:07:04,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=677, Unknown=0, NotChecked=0, Total=756 [2020-12-23 11:07:04,783 INFO L87 Difference]: Start difference. First operand 3356 states and 4801 transitions. Second operand 28 states. [2020-12-23 11:07:05,117 WARN L197 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 97 [2020-12-23 11:07:05,727 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2020-12-23 11:07:05,878 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2020-12-23 11:07:06,037 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2020-12-23 11:07:06,369 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2020-12-23 11:07:06,594 WARN L197 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-12-23 11:07:06,875 WARN L197 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2020-12-23 11:07:07,194 WARN L197 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 77 [2020-12-23 11:07:07,572 WARN L197 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 87 [2020-12-23 11:07:07,973 WARN L197 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 101 [2020-12-23 11:07:08,475 WARN L197 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 115 [2020-12-23 11:07:08,711 WARN L197 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2020-12-23 11:07:08,943 WARN L197 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2020-12-23 11:07:14,346 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2020-12-23 11:07:18,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:07:18,371 INFO L93 Difference]: Finished difference Result 19893 states and 28630 transitions. [2020-12-23 11:07:18,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-12-23 11:07:18,372 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 72 [2020-12-23 11:07:18,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:07:18,405 INFO L225 Difference]: With dead ends: 19893 [2020-12-23 11:07:18,406 INFO L226 Difference]: Without dead ends: 19101 [2020-12-23 11:07:18,415 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 720 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=597, Invalid=3063, Unknown=0, NotChecked=0, Total=3660 [2020-12-23 11:07:18,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19101 states. [2020-12-23 11:07:19,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19101 to 3356. [2020-12-23 11:07:19,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3356 states. [2020-12-23 11:07:19,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3356 states to 3356 states and 4800 transitions. [2020-12-23 11:07:19,510 INFO L78 Accepts]: Start accepts. Automaton has 3356 states and 4800 transitions. Word has length 72 [2020-12-23 11:07:19,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:07:19,510 INFO L481 AbstractCegarLoop]: Abstraction has 3356 states and 4800 transitions. [2020-12-23 11:07:19,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-12-23 11:07:19,510 INFO L276 IsEmpty]: Start isEmpty. Operand 3356 states and 4800 transitions. [2020-12-23 11:07:19,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-23 11:07:19,511 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:07:19,512 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:07:19,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-23 11:07:19,512 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:07:19,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:07:19,513 INFO L82 PathProgramCache]: Analyzing trace with hash -1122165289, now seen corresponding path program 1 times [2020-12-23 11:07:19,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:07:19,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918772362] [2020-12-23 11:07:19,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:07:19,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:07:21,119 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 11:07:21,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918772362] [2020-12-23 11:07:21,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:07:21,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2020-12-23 11:07:21,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635689383] [2020-12-23 11:07:21,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-12-23 11:07:21,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:07:21,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-12-23 11:07:21,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=694, Unknown=0, NotChecked=0, Total=756 [2020-12-23 11:07:21,121 INFO L87 Difference]: Start difference. First operand 3356 states and 4800 transitions. Second operand 28 states. [2020-12-23 11:07:21,554 WARN L197 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 107 [2020-12-23 11:07:22,213 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 33 [2020-12-23 11:07:22,421 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2020-12-23 11:07:22,637 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2020-12-23 11:07:22,850 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2020-12-23 11:07:23,285 WARN L197 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2020-12-23 11:07:23,590 WARN L197 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 73 [2020-12-23 11:07:24,024 WARN L197 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 94 [2020-12-23 11:07:24,508 WARN L197 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 108 [2020-12-23 11:07:25,134 WARN L197 SmtUtils]: Spent 500.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 116 [2020-12-23 11:07:25,756 WARN L197 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 126 [2020-12-23 11:07:26,484 WARN L197 SmtUtils]: Spent 606.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 137 [2020-12-23 11:07:26,798 WARN L197 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2020-12-23 11:07:27,115 WARN L197 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2020-12-23 11:07:27,389 WARN L197 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2020-12-23 11:07:27,643 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2020-12-23 11:07:27,908 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2020-12-23 11:07:28,118 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2020-12-23 11:07:28,450 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2020-12-23 11:07:29,624 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2020-12-23 11:07:33,237 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2020-12-23 11:07:35,372 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2020-12-23 11:07:38,858 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-12-23 11:07:41,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:07:41,299 INFO L93 Difference]: Finished difference Result 26448 states and 38097 transitions. [2020-12-23 11:07:41,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-12-23 11:07:41,300 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 72 [2020-12-23 11:07:41,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:07:41,329 INFO L225 Difference]: With dead ends: 26448 [2020-12-23 11:07:41,329 INFO L226 Difference]: Without dead ends: 25656 [2020-12-23 11:07:41,338 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=559, Invalid=2863, Unknown=0, NotChecked=0, Total=3422 [2020-12-23 11:07:41,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25656 states. [2020-12-23 11:07:42,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25656 to 3361. [2020-12-23 11:07:42,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3361 states. [2020-12-23 11:07:42,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3361 states to 3361 states and 4806 transitions. [2020-12-23 11:07:42,417 INFO L78 Accepts]: Start accepts. Automaton has 3361 states and 4806 transitions. Word has length 72 [2020-12-23 11:07:42,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:07:42,417 INFO L481 AbstractCegarLoop]: Abstraction has 3361 states and 4806 transitions. [2020-12-23 11:07:42,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-12-23 11:07:42,418 INFO L276 IsEmpty]: Start isEmpty. Operand 3361 states and 4806 transitions. [2020-12-23 11:07:42,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-23 11:07:42,418 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:07:42,419 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:07:42,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-23 11:07:42,419 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:07:42,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:07:42,419 INFO L82 PathProgramCache]: Analyzing trace with hash 727688951, now seen corresponding path program 1 times [2020-12-23 11:07:42,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:07:42,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978385609] [2020-12-23 11:07:42,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:07:42,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:07:44,107 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 11:07:44,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978385609] [2020-12-23 11:07:44,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:07:44,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2020-12-23 11:07:44,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863891898] [2020-12-23 11:07:44,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-12-23 11:07:44,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:07:44,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-12-23 11:07:44,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=696, Unknown=0, NotChecked=0, Total=756 [2020-12-23 11:07:44,110 INFO L87 Difference]: Start difference. First operand 3361 states and 4806 transitions. Second operand 28 states. [2020-12-23 11:07:44,618 WARN L197 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 108 [2020-12-23 11:07:45,366 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 38 [2020-12-23 11:07:45,591 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2020-12-23 11:07:45,815 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 37 [2020-12-23 11:07:46,268 WARN L197 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 47 [2020-12-23 11:07:46,594 WARN L197 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2020-12-23 11:07:47,000 WARN L197 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 78 [2020-12-23 11:07:47,433 WARN L197 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 89 [2020-12-23 11:07:47,926 WARN L197 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 98 [2020-12-23 11:07:48,479 WARN L197 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 108 [2020-12-23 11:07:49,172 WARN L197 SmtUtils]: Spent 578.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 124 [2020-12-23 11:07:49,504 WARN L197 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2020-12-23 11:07:49,838 WARN L197 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2020-12-23 11:07:50,302 WARN L197 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2020-12-23 11:07:50,675 WARN L197 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2020-12-23 11:07:51,047 WARN L197 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2020-12-23 11:07:51,421 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2020-12-23 11:07:58,648 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 42 [2020-12-23 11:08:01,850 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2020-12-23 11:08:04,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:08:04,031 INFO L93 Difference]: Finished difference Result 19366 states and 27869 transitions. [2020-12-23 11:08:04,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-12-23 11:08:04,032 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 72 [2020-12-23 11:08:04,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:08:04,058 INFO L225 Difference]: With dead ends: 19366 [2020-12-23 11:08:04,058 INFO L226 Difference]: Without dead ends: 18573 [2020-12-23 11:08:04,063 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=507, Invalid=2463, Unknown=0, NotChecked=0, Total=2970 [2020-12-23 11:08:04,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18573 states. [2020-12-23 11:08:05,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18573 to 3366. [2020-12-23 11:08:05,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3366 states. [2020-12-23 11:08:05,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3366 states to 3366 states and 4813 transitions. [2020-12-23 11:08:05,147 INFO L78 Accepts]: Start accepts. Automaton has 3366 states and 4813 transitions. Word has length 72 [2020-12-23 11:08:05,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:08:05,148 INFO L481 AbstractCegarLoop]: Abstraction has 3366 states and 4813 transitions. [2020-12-23 11:08:05,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-12-23 11:08:05,148 INFO L276 IsEmpty]: Start isEmpty. Operand 3366 states and 4813 transitions. [2020-12-23 11:08:05,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-23 11:08:05,149 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:08:05,149 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:08:05,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-23 11:08:05,150 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:08:05,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:08:05,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1216243146, now seen corresponding path program 1 times [2020-12-23 11:08:05,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:08:05,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860627531] [2020-12-23 11:08:05,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:08:05,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:08:06,823 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 11:08:06,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860627531] [2020-12-23 11:08:06,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:08:06,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2020-12-23 11:08:06,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768370077] [2020-12-23 11:08:06,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-12-23 11:08:06,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:08:06,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-12-23 11:08:06,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=680, Unknown=0, NotChecked=0, Total=756 [2020-12-23 11:08:06,825 INFO L87 Difference]: Start difference. First operand 3366 states and 4813 transitions. Second operand 28 states. [2020-12-23 11:08:07,283 WARN L197 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 93 [2020-12-23 11:08:07,838 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 36 [2020-12-23 11:08:08,028 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 36 [2020-12-23 11:08:08,217 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2020-12-23 11:08:08,598 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2020-12-23 11:08:08,852 WARN L197 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2020-12-23 11:08:09,196 WARN L197 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2020-12-23 11:08:09,545 WARN L197 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2020-12-23 11:08:09,970 WARN L197 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 79 [2020-12-23 11:08:10,424 WARN L197 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 90 [2020-12-23 11:08:10,977 WARN L197 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 102 [2020-12-23 11:08:11,258 WARN L197 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2020-12-23 11:08:11,544 WARN L197 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2020-12-23 11:08:11,946 WARN L197 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2020-12-23 11:08:12,269 WARN L197 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2020-12-23 11:08:12,594 WARN L197 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-12-23 11:08:14,034 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-12-23 11:08:17,804 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 36 [2020-12-23 11:08:19,414 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2020-12-23 11:08:26,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:08:26,759 INFO L93 Difference]: Finished difference Result 26241 states and 37798 transitions. [2020-12-23 11:08:26,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-12-23 11:08:26,763 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 72 [2020-12-23 11:08:26,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:08:26,785 INFO L225 Difference]: With dead ends: 26241 [2020-12-23 11:08:26,785 INFO L226 Difference]: Without dead ends: 25449 [2020-12-23 11:08:26,791 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=537, Invalid=2543, Unknown=0, NotChecked=0, Total=3080 [2020-12-23 11:08:26,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25449 states. [2020-12-23 11:08:28,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25449 to 3371. [2020-12-23 11:08:28,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3371 states. [2020-12-23 11:08:28,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3371 states to 3371 states and 4819 transitions. [2020-12-23 11:08:28,023 INFO L78 Accepts]: Start accepts. Automaton has 3371 states and 4819 transitions. Word has length 72 [2020-12-23 11:08:28,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:08:28,024 INFO L481 AbstractCegarLoop]: Abstraction has 3371 states and 4819 transitions. [2020-12-23 11:08:28,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-12-23 11:08:28,024 INFO L276 IsEmpty]: Start isEmpty. Operand 3371 states and 4819 transitions. [2020-12-23 11:08:28,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-23 11:08:28,025 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:08:28,025 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:08:28,025 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-23 11:08:28,025 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:08:28,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:08:28,026 INFO L82 PathProgramCache]: Analyzing trace with hash -630191304, now seen corresponding path program 1 times [2020-12-23 11:08:28,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:08:28,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827204922] [2020-12-23 11:08:28,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:08:28,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:08:29,815 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 11:08:29,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827204922] [2020-12-23 11:08:29,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:08:29,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2020-12-23 11:08:29,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400725102] [2020-12-23 11:08:29,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-12-23 11:08:29,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:08:29,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-12-23 11:08:29,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=688, Unknown=0, NotChecked=0, Total=756 [2020-12-23 11:08:29,817 INFO L87 Difference]: Start difference. First operand 3371 states and 4819 transitions. Second operand 28 states. [2020-12-23 11:08:30,419 WARN L197 SmtUtils]: Spent 531.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 100 [2020-12-23 11:08:31,027 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 31 [2020-12-23 11:08:31,230 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2020-12-23 11:08:31,479 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2020-12-23 11:08:31,766 WARN L197 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2020-12-23 11:08:32,056 WARN L197 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2020-12-23 11:08:32,580 WARN L197 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2020-12-23 11:08:32,949 WARN L197 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2020-12-23 11:08:33,431 WARN L197 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2020-12-23 11:08:33,900 WARN L197 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 77 [2020-12-23 11:08:34,497 WARN L197 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 93 [2020-12-23 11:08:35,142 WARN L197 SmtUtils]: Spent 547.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 104 [2020-12-23 11:08:35,936 WARN L197 SmtUtils]: Spent 661.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 113 [2020-12-23 11:08:36,349 WARN L197 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2020-12-23 11:08:36,756 WARN L197 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2020-12-23 11:08:37,305 WARN L197 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2020-12-23 11:08:37,766 WARN L197 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 66 [2020-12-23 11:08:38,225 WARN L197 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2020-12-23 11:08:38,806 WARN L197 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-12-23 11:08:39,240 WARN L197 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2020-12-23 11:08:39,745 WARN L197 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2020-12-23 11:08:40,208 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 37 [2020-12-23 11:08:40,597 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 37 [2020-12-23 11:08:46,152 WARN L197 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2020-12-23 11:08:51,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:08:51,157 INFO L93 Difference]: Finished difference Result 16208 states and 23302 transitions. [2020-12-23 11:08:51,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-12-23 11:08:51,158 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 72 [2020-12-23 11:08:51,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:08:51,171 INFO L225 Difference]: With dead ends: 16208 [2020-12-23 11:08:51,172 INFO L226 Difference]: Without dead ends: 15415 [2020-12-23 11:08:51,175 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=613, Invalid=2467, Unknown=0, NotChecked=0, Total=3080 [2020-12-23 11:08:51,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15415 states. [2020-12-23 11:08:52,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15415 to 3371. [2020-12-23 11:08:52,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3371 states. [2020-12-23 11:08:52,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3371 states to 3371 states and 4819 transitions. [2020-12-23 11:08:52,314 INFO L78 Accepts]: Start accepts. Automaton has 3371 states and 4819 transitions. Word has length 72 [2020-12-23 11:08:52,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:08:52,315 INFO L481 AbstractCegarLoop]: Abstraction has 3371 states and 4819 transitions. [2020-12-23 11:08:52,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-12-23 11:08:52,315 INFO L276 IsEmpty]: Start isEmpty. Operand 3371 states and 4819 transitions. [2020-12-23 11:08:52,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-23 11:08:52,315 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:08:52,316 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:08:52,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-23 11:08:52,316 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:08:52,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:08:52,316 INFO L82 PathProgramCache]: Analyzing trace with hash -1142963134, now seen corresponding path program 1 times [2020-12-23 11:08:52,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:08:52,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884287050] [2020-12-23 11:08:52,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:08:52,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:08:54,156 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 11:08:54,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884287050] [2020-12-23 11:08:54,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:08:54,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2020-12-23 11:08:54,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85230718] [2020-12-23 11:08:54,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-12-23 11:08:54,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:08:54,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-12-23 11:08:54,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=630, Unknown=0, NotChecked=0, Total=702 [2020-12-23 11:08:54,158 INFO L87 Difference]: Start difference. First operand 3371 states and 4819 transitions. Second operand 27 states. [2020-12-23 11:08:54,652 WARN L197 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 99 [2020-12-23 11:08:55,043 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 28 [2020-12-23 11:08:55,420 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2020-12-23 11:08:55,643 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 36 [2020-12-23 11:08:55,866 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2020-12-23 11:08:56,330 WARN L197 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2020-12-23 11:08:56,635 WARN L197 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2020-12-23 11:08:57,033 WARN L197 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2020-12-23 11:08:57,484 WARN L197 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 86 [2020-12-23 11:08:58,087 WARN L197 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 98 [2020-12-23 11:08:58,777 WARN L197 SmtUtils]: Spent 590.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 110 [2020-12-23 11:08:59,600 WARN L197 SmtUtils]: Spent 708.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 123 [2020-12-23 11:08:59,951 WARN L197 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2020-12-23 11:09:00,284 WARN L197 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2020-12-23 11:09:00,513 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2020-12-23 11:09:00,800 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2020-12-23 11:09:01,191 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2020-12-23 11:09:01,685 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2020-12-23 11:09:02,310 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2020-12-23 11:09:08,595 WARN L197 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2020-12-23 11:09:12,445 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 32 [2020-12-23 11:09:15,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:09:15,965 INFO L93 Difference]: Finished difference Result 22506 states and 32382 transitions. [2020-12-23 11:09:15,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-12-23 11:09:15,967 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 73 [2020-12-23 11:09:15,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:09:15,986 INFO L225 Difference]: With dead ends: 22506 [2020-12-23 11:09:15,986 INFO L226 Difference]: Without dead ends: 21176 [2020-12-23 11:09:15,991 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 645 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=544, Invalid=2878, Unknown=0, NotChecked=0, Total=3422 [2020-12-23 11:09:16,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21176 states. [2020-12-23 11:09:17,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21176 to 3371. [2020-12-23 11:09:17,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3371 states. [2020-12-23 11:09:17,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3371 states to 3371 states and 4818 transitions. [2020-12-23 11:09:17,197 INFO L78 Accepts]: Start accepts. Automaton has 3371 states and 4818 transitions. Word has length 73 [2020-12-23 11:09:17,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:09:17,198 INFO L481 AbstractCegarLoop]: Abstraction has 3371 states and 4818 transitions. [2020-12-23 11:09:17,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-12-23 11:09:17,198 INFO L276 IsEmpty]: Start isEmpty. Operand 3371 states and 4818 transitions. [2020-12-23 11:09:17,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-23 11:09:17,198 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:09:17,199 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:09:17,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-23 11:09:17,199 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:09:17,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:09:17,200 INFO L82 PathProgramCache]: Analyzing trace with hash -950934591, now seen corresponding path program 1 times [2020-12-23 11:09:17,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:09:17,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004868206] [2020-12-23 11:09:17,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:09:17,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:09:19,285 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 11:09:19,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004868206] [2020-12-23 11:09:19,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:09:19,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2020-12-23 11:09:19,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018406831] [2020-12-23 11:09:19,286 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-12-23 11:09:19,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:09:19,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-12-23 11:09:19,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2020-12-23 11:09:19,286 INFO L87 Difference]: Start difference. First operand 3371 states and 4818 transitions. Second operand 27 states. [2020-12-23 11:09:19,775 WARN L197 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 85 [2020-12-23 11:09:20,285 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 28 [2020-12-23 11:09:20,512 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 34 [2020-12-23 11:09:20,754 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 35 [2020-12-23 11:09:20,992 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2020-12-23 11:09:21,494 WARN L197 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2020-12-23 11:09:21,830 WARN L197 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2020-12-23 11:09:22,266 WARN L197 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2020-12-23 11:09:22,718 WARN L197 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2020-12-23 11:09:23,266 WARN L197 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 79 [2020-12-23 11:09:23,877 WARN L197 SmtUtils]: Spent 520.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 90 [2020-12-23 11:09:24,628 WARN L197 SmtUtils]: Spent 634.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 104 [2020-12-23 11:09:24,995 WARN L197 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2020-12-23 11:09:25,359 WARN L197 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2020-12-23 11:09:25,602 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2020-12-23 11:09:25,909 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2020-12-23 11:09:26,336 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2020-12-23 11:09:26,850 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2020-12-23 11:09:27,719 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2020-12-23 11:09:28,334 WARN L197 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 43 [2020-12-23 11:09:28,635 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2020-12-23 11:09:29,150 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2020-12-23 11:09:32,998 WARN L197 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36 [2020-12-23 11:09:35,019 WARN L197 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2020-12-23 11:09:40,775 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 32 [2020-12-23 11:09:49,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:09:49,085 INFO L93 Difference]: Finished difference Result 40447 states and 58239 transitions. [2020-12-23 11:09:49,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-12-23 11:09:49,087 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 73 [2020-12-23 11:09:49,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:09:49,128 INFO L225 Difference]: With dead ends: 40447 [2020-12-23 11:09:49,128 INFO L226 Difference]: Without dead ends: 39117 [2020-12-23 11:09:49,137 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 734 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=569, Invalid=3091, Unknown=0, NotChecked=0, Total=3660 [2020-12-23 11:09:49,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39117 states. [2020-12-23 11:09:50,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39117 to 3376. [2020-12-23 11:09:50,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3376 states. [2020-12-23 11:09:50,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3376 states to 3376 states and 4824 transitions. [2020-12-23 11:09:50,644 INFO L78 Accepts]: Start accepts. Automaton has 3376 states and 4824 transitions. Word has length 73 [2020-12-23 11:09:50,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:09:50,644 INFO L481 AbstractCegarLoop]: Abstraction has 3376 states and 4824 transitions. [2020-12-23 11:09:50,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-12-23 11:09:50,645 INFO L276 IsEmpty]: Start isEmpty. Operand 3376 states and 4824 transitions. [2020-12-23 11:09:50,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-23 11:09:50,645 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:09:50,645 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:09:50,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-23 11:09:50,646 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:09:50,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:09:50,646 INFO L82 PathProgramCache]: Analyzing trace with hash -1045571284, now seen corresponding path program 1 times [2020-12-23 11:09:50,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:09:50,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008422063] [2020-12-23 11:09:50,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:09:50,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:09:50,959 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 21 [2020-12-23 11:09:51,095 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 20 [2020-12-23 11:09:51,244 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 22 [2020-12-23 11:09:51,473 WARN L197 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2020-12-23 11:09:51,959 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 11:09:51,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008422063] [2020-12-23 11:09:51,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:09:51,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-12-23 11:09:51,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776416669] [2020-12-23 11:09:51,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-23 11:09:51,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:09:51,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-23 11:09:51,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-12-23 11:09:51,961 INFO L87 Difference]: Start difference. First operand 3376 states and 4824 transitions. Second operand 15 states. [2020-12-23 11:09:52,133 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 21 [2020-12-23 11:09:52,374 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 23 [2020-12-23 11:09:52,524 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 20 [2020-12-23 11:09:52,708 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 23 [2020-12-23 11:09:53,137 WARN L197 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2020-12-23 11:09:53,550 WARN L197 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2020-12-23 11:09:54,022 WARN L197 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2020-12-23 11:09:54,451 WARN L197 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2020-12-23 11:09:54,871 WARN L197 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2020-12-23 11:09:55,427 WARN L197 SmtUtils]: Spent 499.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 64 [2020-12-23 11:09:55,722 WARN L197 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-12-23 11:09:56,131 WARN L197 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2020-12-23 11:09:56,304 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2020-12-23 11:09:56,557 WARN L197 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-12-23 11:09:56,944 WARN L197 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2020-12-23 11:09:57,305 WARN L197 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 46 [2020-12-23 11:09:58,239 WARN L197 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-12-23 11:09:59,720 WARN L197 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2020-12-23 11:10:00,102 WARN L197 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2020-12-23 11:10:10,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:10:10,126 INFO L93 Difference]: Finished difference Result 26258 states and 37846 transitions. [2020-12-23 11:10:10,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-23 11:10:10,129 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 73 [2020-12-23 11:10:10,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:10:10,151 INFO L225 Difference]: With dead ends: 26258 [2020-12-23 11:10:10,151 INFO L226 Difference]: Without dead ends: 24895 [2020-12-23 11:10:10,156 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=280, Invalid=980, Unknown=0, NotChecked=0, Total=1260 [2020-12-23 11:10:10,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24895 states. [2020-12-23 11:10:11,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24895 to 3361. [2020-12-23 11:10:11,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3361 states. [2020-12-23 11:10:11,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3361 states to 3361 states and 4802 transitions. [2020-12-23 11:10:11,693 INFO L78 Accepts]: Start accepts. Automaton has 3361 states and 4802 transitions. Word has length 73 [2020-12-23 11:10:11,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:10:11,693 INFO L481 AbstractCegarLoop]: Abstraction has 3361 states and 4802 transitions. [2020-12-23 11:10:11,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-23 11:10:11,694 INFO L276 IsEmpty]: Start isEmpty. Operand 3361 states and 4802 transitions. [2020-12-23 11:10:11,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-23 11:10:11,694 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:10:11,694 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:10:11,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-23 11:10:11,694 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:10:11,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:10:11,695 INFO L82 PathProgramCache]: Analyzing trace with hash -113959252, now seen corresponding path program 1 times [2020-12-23 11:10:11,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:10:11,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290131848] [2020-12-23 11:10:11,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:10:11,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:10:12,233 WARN L197 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 29 [2020-12-23 11:10:12,555 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 11:10:12,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290131848] [2020-12-23 11:10:12,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:10:12,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-12-23 11:10:12,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101068831] [2020-12-23 11:10:12,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-23 11:10:12,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:10:12,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-23 11:10:12,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-12-23 11:10:12,557 INFO L87 Difference]: Start difference. First operand 3361 states and 4802 transitions. Second operand 13 states. [2020-12-23 11:10:13,261 WARN L197 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2020-12-23 11:10:13,571 WARN L197 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2020-12-23 11:10:13,903 WARN L197 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2020-12-23 11:10:14,530 WARN L197 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2020-12-23 11:10:14,978 WARN L197 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 38 [2020-12-23 11:10:21,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:10:21,382 INFO L93 Difference]: Finished difference Result 14381 states and 20666 transitions. [2020-12-23 11:10:21,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-23 11:10:21,385 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 73 [2020-12-23 11:10:21,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:10:21,399 INFO L225 Difference]: With dead ends: 14381 [2020-12-23 11:10:21,400 INFO L226 Difference]: Without dead ends: 13028 [2020-12-23 11:10:21,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=134, Invalid=418, Unknown=0, NotChecked=0, Total=552 [2020-12-23 11:10:21,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13028 states. [2020-12-23 11:10:22,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13028 to 3336. [2020-12-23 11:10:22,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3336 states. [2020-12-23 11:10:22,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3336 states to 3336 states and 4768 transitions. [2020-12-23 11:10:22,982 INFO L78 Accepts]: Start accepts. Automaton has 3336 states and 4768 transitions. Word has length 73 [2020-12-23 11:10:22,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:10:22,982 INFO L481 AbstractCegarLoop]: Abstraction has 3336 states and 4768 transitions. [2020-12-23 11:10:22,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-23 11:10:22,982 INFO L276 IsEmpty]: Start isEmpty. Operand 3336 states and 4768 transitions. [2020-12-23 11:10:22,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-23 11:10:22,983 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:10:22,983 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:10:22,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-23 11:10:22,983 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:10:22,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:10:22,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1183859479, now seen corresponding path program 1 times [2020-12-23 11:10:22,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:10:22,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110872637] [2020-12-23 11:10:22,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:10:23,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:10:23,356 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 27 [2020-12-23 11:10:23,504 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 29 [2020-12-23 11:10:23,636 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 24 [2020-12-23 11:10:23,768 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 26 [2020-12-23 11:10:24,040 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 35 [2020-12-23 11:10:24,767 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 19 [2020-12-23 11:10:25,475 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 11:10:25,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110872637] [2020-12-23 11:10:25,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:10:25,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2020-12-23 11:10:25,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772158832] [2020-12-23 11:10:25,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-23 11:10:25,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:10:25,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-23 11:10:25,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2020-12-23 11:10:25,476 INFO L87 Difference]: Start difference. First operand 3336 states and 4768 transitions. Second operand 22 states. [2020-12-23 11:10:25,676 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 23 [2020-12-23 11:10:26,038 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 30 [2020-12-23 11:10:26,273 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 31 [2020-12-23 11:10:26,668 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 25 [2020-12-23 11:10:26,911 WARN L197 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 32 [2020-12-23 11:10:27,167 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 32 [2020-12-23 11:10:27,482 WARN L197 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2020-12-23 11:10:27,798 WARN L197 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 44 [2020-12-23 11:10:28,329 WARN L197 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 61 [2020-12-23 11:10:28,918 WARN L197 SmtUtils]: Spent 521.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 71 [2020-12-23 11:10:29,245 WARN L197 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46 [2020-12-23 11:10:29,580 WARN L197 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46 [2020-12-23 11:10:29,796 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2020-12-23 11:10:30,053 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2020-12-23 11:10:30,375 WARN L197 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 43 [2020-12-23 11:10:30,694 WARN L197 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2020-12-23 11:10:31,147 WARN L197 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 43 [2020-12-23 11:10:31,746 WARN L197 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46 [2020-12-23 11:10:32,747 WARN L197 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2020-12-23 11:10:33,409 WARN L197 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 38 [2020-12-23 11:10:33,703 WARN L197 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2020-12-23 11:10:34,412 WARN L197 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 35 [2020-12-23 11:10:35,429 WARN L197 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 38 [2020-12-23 11:10:36,131 WARN L197 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 35