/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 11:12:18,905 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 11:12:18,909 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 11:12:18,965 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 11:12:18,966 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 11:12:18,969 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 11:12:18,973 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 11:12:18,978 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 11:12:18,981 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 11:12:18,987 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 11:12:18,991 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 11:12:18,992 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 11:12:18,993 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 11:12:18,996 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 11:12:18,998 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 11:12:18,999 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 11:12:19,000 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 11:12:19,003 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 11:12:19,011 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 11:12:19,019 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 11:12:19,022 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 11:12:19,024 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 11:12:19,025 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 11:12:19,028 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 11:12:19,036 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 11:12:19,037 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 11:12:19,037 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 11:12:19,040 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 11:12:19,040 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 11:12:19,041 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 11:12:19,042 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 11:12:19,042 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 11:12:19,044 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 11:12:19,045 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 11:12:19,046 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 11:12:19,062 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 11:12:19,063 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 11:12:19,063 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 11:12:19,064 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 11:12:19,068 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 11:12:19,069 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 11:12:19,070 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 11:12:19,116 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 11:12:19,116 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 11:12:19,120 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 11:12:19,120 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 11:12:19,121 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 11:12:19,121 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 11:12:19,121 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 11:12:19,121 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 11:12:19,121 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 11:12:19,122 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 11:12:19,123 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 11:12:19,123 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 11:12:19,123 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 11:12:19,123 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 11:12:19,124 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 11:12:19,124 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 11:12:19,124 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 11:12:19,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 11:12:19,124 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 11:12:19,125 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 11:12:19,125 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 11:12:19,125 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 11:12:19,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 11:12:19,125 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 11:12:19,126 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 11:12:19,126 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 11:12:19,606 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 11:12:19,639 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 11:12:19,643 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 11:12:19,644 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 11:12:19,645 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 11:12:19,646 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-23 11:12:19,735 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ea4b6f9b7/3adcfe7b46ee4bb1bc31e49659f4b5e6/FLAGefccfc8a6 [2020-12-23 11:12:20,442 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 11:12:20,443 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-23 11:12:20,455 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ea4b6f9b7/3adcfe7b46ee4bb1bc31e49659f4b5e6/FLAGefccfc8a6 [2020-12-23 11:12:20,775 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ea4b6f9b7/3adcfe7b46ee4bb1bc31e49659f4b5e6 [2020-12-23 11:12:20,779 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 11:12:20,781 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 11:12:20,782 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 11:12:20,783 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 11:12:20,787 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 11:12:20,787 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 11:12:20" (1/1) ... [2020-12-23 11:12:20,789 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37df45a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:12:20, skipping insertion in model container [2020-12-23 11:12:20,789 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 11:12:20" (1/1) ... [2020-12-23 11:12:20,797 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 11:12:20,834 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_6147~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~0,] left hand side expression in assignment: lhs: VariableLHS[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~0,] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~0,] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4__m4~0,] left hand side expression in assignment: lhs: VariableLHS[~node4__m4~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node5__m5~0,] left hand side expression in assignment: lhs: VariableLHS[~node5__m5~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_6261~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_1~0,] left hand side expression in assignment: lhs: VariableLHS[~assert__arg~0,] [2020-12-23 11:12:21,084 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[5401,5414] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~st5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node5____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node5____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] [2020-12-23 11:12:21,153 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 11:12:21,188 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_6147~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~0,] left hand side expression in assignment: lhs: VariableLHS[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~0,] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~0,] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4__m4~0,] left hand side expression in assignment: lhs: VariableLHS[~node4__m4~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node5__m5~0,] left hand side expression in assignment: lhs: VariableLHS[~node5__m5~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_6261~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_1~0,] left hand side expression in assignment: lhs: VariableLHS[~assert__arg~0,] [2020-12-23 11:12:21,297 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[5401,5414] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~st5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node5____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node5____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] [2020-12-23 11:12:21,349 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 11:12:21,392 INFO L208 MainTranslator]: Completed translation [2020-12-23 11:12:21,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:12:21 WrapperNode [2020-12-23 11:12:21,393 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 11:12:21,397 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 11:12:21,397 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 11:12:21,397 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 11:12:21,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:12:21" (1/1) ... [2020-12-23 11:12:21,442 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:12:21" (1/1) ... [2020-12-23 11:12:21,510 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 11:12:21,511 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 11:12:21,511 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 11:12:21,511 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 11:12:21,528 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:12:21" (1/1) ... [2020-12-23 11:12:21,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:12:21" (1/1) ... [2020-12-23 11:12:21,544 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:12:21" (1/1) ... [2020-12-23 11:12:21,545 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:12:21" (1/1) ... [2020-12-23 11:12:21,564 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:12:21" (1/1) ... [2020-12-23 11:12:21,578 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:12:21" (1/1) ... [2020-12-23 11:12:21,581 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:12:21" (1/1) ... [2020-12-23 11:12:21,592 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 11:12:21,593 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 11:12:21,593 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 11:12:21,594 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 11:12:21,595 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:12:21" (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 11:12:21,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 11:12:21,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 11:12:21,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 11:12:21,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 11:12:22,659 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 11:12:22,660 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-23 11:12:22,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 11:12:22 BoogieIcfgContainer [2020-12-23 11:12:22,670 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 11:12:22,674 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 11:12:22,674 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 11:12:22,679 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 11:12:22,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 11:12:20" (1/3) ... [2020-12-23 11:12:22,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e805198 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 11:12:22, skipping insertion in model container [2020-12-23 11:12:22,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:12:21" (2/3) ... [2020-12-23 11:12:22,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e805198 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 11:12:22, skipping insertion in model container [2020-12-23 11:12:22,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 11:12:22" (3/3) ... [2020-12-23 11:12:22,693 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-23 11:12:22,704 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 11:12:22,715 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 11:12:22,737 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 11:12:22,766 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 11:12:22,766 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 11:12:22,767 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 11:12:22,767 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 11:12:22,767 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 11:12:22,767 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 11:12:22,767 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 11:12:22,767 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 11:12:22,787 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states. [2020-12-23 11:12:22,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-23 11:12:22,797 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:12:22,798 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] [2020-12-23 11:12:22,798 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:12:22,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:12:22,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1055716622, now seen corresponding path program 1 times [2020-12-23 11:12:22,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:12:22,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628051669] [2020-12-23 11:12:22,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:12:23,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:12:23,298 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 11:12:23,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628051669] [2020-12-23 11:12:23,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:12:23,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:12:23,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627240074] [2020-12-23 11:12:23,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:12:23,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:12:23,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:12:23,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:12:23,326 INFO L87 Difference]: Start difference. First operand 99 states. Second operand 3 states. [2020-12-23 11:12:23,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:12:23,405 INFO L93 Difference]: Finished difference Result 221 states and 356 transitions. [2020-12-23 11:12:23,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:12:23,407 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2020-12-23 11:12:23,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:12:23,422 INFO L225 Difference]: With dead ends: 221 [2020-12-23 11:12:23,423 INFO L226 Difference]: Without dead ends: 150 [2020-12-23 11:12:23,426 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 11:12:23,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-12-23 11:12:23,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 148. [2020-12-23 11:12:23,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-12-23 11:12:23,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 215 transitions. [2020-12-23 11:12:23,487 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 215 transitions. Word has length 60 [2020-12-23 11:12:23,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:12:23,488 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 215 transitions. [2020-12-23 11:12:23,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:12:23,488 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 215 transitions. [2020-12-23 11:12:23,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-23 11:12:23,491 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:12:23,491 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:12:23,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 11:12:23,492 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:12:23,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:12:23,493 INFO L82 PathProgramCache]: Analyzing trace with hash 160325981, now seen corresponding path program 1 times [2020-12-23 11:12:23,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:12:23,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079203194] [2020-12-23 11:12:23,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:12:23,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:12:23,725 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 11:12:23,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079203194] [2020-12-23 11:12:23,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:12:23,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:12:23,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081302456] [2020-12-23 11:12:23,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:12:23,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:12:23,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:12:23,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:12:23,733 INFO L87 Difference]: Start difference. First operand 148 states and 215 transitions. Second operand 3 states. [2020-12-23 11:12:23,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:12:23,836 INFO L93 Difference]: Finished difference Result 360 states and 551 transitions. [2020-12-23 11:12:23,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:12:23,841 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2020-12-23 11:12:23,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:12:23,844 INFO L225 Difference]: With dead ends: 360 [2020-12-23 11:12:23,845 INFO L226 Difference]: Without dead ends: 246 [2020-12-23 11:12:23,846 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 11:12:23,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-12-23 11:12:23,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 244. [2020-12-23 11:12:23,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-12-23 11:12:23,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 367 transitions. [2020-12-23 11:12:23,912 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 367 transitions. Word has length 61 [2020-12-23 11:12:23,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:12:23,914 INFO L481 AbstractCegarLoop]: Abstraction has 244 states and 367 transitions. [2020-12-23 11:12:23,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:12:23,915 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 367 transitions. [2020-12-23 11:12:23,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-23 11:12:23,918 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:12:23,919 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 11:12:23,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 11:12:23,921 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:12:23,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:12:23,922 INFO L82 PathProgramCache]: Analyzing trace with hash -2130731763, now seen corresponding path program 1 times [2020-12-23 11:12:23,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:12:23,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401646101] [2020-12-23 11:12:23,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:12:23,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:12:24,068 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 11:12:24,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401646101] [2020-12-23 11:12:24,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:12:24,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:12:24,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062946117] [2020-12-23 11:12:24,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:12:24,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:12:24,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:12:24,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:12:24,075 INFO L87 Difference]: Start difference. First operand 244 states and 367 transitions. Second operand 3 states. [2020-12-23 11:12:24,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:12:24,206 INFO L93 Difference]: Finished difference Result 632 states and 981 transitions. [2020-12-23 11:12:24,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:12:24,207 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2020-12-23 11:12:24,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:12:24,214 INFO L225 Difference]: With dead ends: 632 [2020-12-23 11:12:24,214 INFO L226 Difference]: Without dead ends: 422 [2020-12-23 11:12:24,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:12:24,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2020-12-23 11:12:24,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 420. [2020-12-23 11:12:24,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 420 states. [2020-12-23 11:12:24,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 643 transitions. [2020-12-23 11:12:24,287 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 643 transitions. Word has length 62 [2020-12-23 11:12:24,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:12:24,292 INFO L481 AbstractCegarLoop]: Abstraction has 420 states and 643 transitions. [2020-12-23 11:12:24,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:12:24,292 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 643 transitions. [2020-12-23 11:12:24,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-23 11:12:24,294 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:12:24,294 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:12:24,295 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 11:12:24,295 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:12:24,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:12:24,295 INFO L82 PathProgramCache]: Analyzing trace with hash 2078468845, now seen corresponding path program 1 times [2020-12-23 11:12:24,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:12:24,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435334833] [2020-12-23 11:12:24,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:12:24,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:12:24,380 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 11:12:24,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435334833] [2020-12-23 11:12:24,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:12:24,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:12:24,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350953178] [2020-12-23 11:12:24,382 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:12:24,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:12:24,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:12:24,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:12:24,384 INFO L87 Difference]: Start difference. First operand 420 states and 643 transitions. Second operand 3 states. [2020-12-23 11:12:24,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:12:24,442 INFO L93 Difference]: Finished difference Result 1128 states and 1757 transitions. [2020-12-23 11:12:24,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:12:24,443 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2020-12-23 11:12:24,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:12:24,448 INFO L225 Difference]: With dead ends: 1128 [2020-12-23 11:12:24,449 INFO L226 Difference]: Without dead ends: 742 [2020-12-23 11:12:24,450 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 11:12:24,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2020-12-23 11:12:24,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 740. [2020-12-23 11:12:24,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 740 states. [2020-12-23 11:12:24,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 1139 transitions. [2020-12-23 11:12:24,491 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 1139 transitions. Word has length 63 [2020-12-23 11:12:24,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:12:24,492 INFO L481 AbstractCegarLoop]: Abstraction has 740 states and 1139 transitions. [2020-12-23 11:12:24,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:12:24,492 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 1139 transitions. [2020-12-23 11:12:24,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-23 11:12:24,493 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:12:24,494 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 11:12:24,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 11:12:24,494 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:12:24,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:12:24,495 INFO L82 PathProgramCache]: Analyzing trace with hash -1380036385, now seen corresponding path program 1 times [2020-12-23 11:12:24,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:12:24,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325487423] [2020-12-23 11:12:24,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:12:24,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:12:24,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 11:12:24,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325487423] [2020-12-23 11:12:24,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:12:24,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 11:12:24,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539123055] [2020-12-23 11:12:24,631 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 11:12:24,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:12:24,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 11:12:24,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-23 11:12:24,632 INFO L87 Difference]: Start difference. First operand 740 states and 1139 transitions. Second operand 6 states. [2020-12-23 11:12:24,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:12:24,910 INFO L93 Difference]: Finished difference Result 2144 states and 3333 transitions. [2020-12-23 11:12:24,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 11:12:24,911 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-12-23 11:12:24,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:12:24,920 INFO L225 Difference]: With dead ends: 2144 [2020-12-23 11:12:24,920 INFO L226 Difference]: Without dead ends: 1438 [2020-12-23 11:12:24,922 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 11:12:24,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1438 states. [2020-12-23 11:12:25,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1438 to 1436. [2020-12-23 11:12:25,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1436 states. [2020-12-23 11:12:25,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 2219 transitions. [2020-12-23 11:12:25,022 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 2219 transitions. Word has length 64 [2020-12-23 11:12:25,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:12:25,023 INFO L481 AbstractCegarLoop]: Abstraction has 1436 states and 2219 transitions. [2020-12-23 11:12:25,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 11:12:25,023 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 2219 transitions. [2020-12-23 11:12:25,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-23 11:12:25,024 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:12:25,025 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] [2020-12-23 11:12:25,025 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 11:12:25,025 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:12:25,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:12:25,026 INFO L82 PathProgramCache]: Analyzing trace with hash -106168380, now seen corresponding path program 1 times [2020-12-23 11:12:25,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:12:25,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854301336] [2020-12-23 11:12:25,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:12:25,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:12:25,128 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 11:12:25,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854301336] [2020-12-23 11:12:25,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:12:25,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 11:12:25,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183901130] [2020-12-23 11:12:25,129 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 11:12:25,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:12:25,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 11:12:25,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 11:12:25,131 INFO L87 Difference]: Start difference. First operand 1436 states and 2219 transitions. Second operand 5 states. [2020-12-23 11:12:25,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:12:25,373 INFO L93 Difference]: Finished difference Result 2838 states and 4404 transitions. [2020-12-23 11:12:25,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 11:12:25,374 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-12-23 11:12:25,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:12:25,382 INFO L225 Difference]: With dead ends: 2838 [2020-12-23 11:12:25,383 INFO L226 Difference]: Without dead ends: 1436 [2020-12-23 11:12:25,385 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 11:12:25,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1436 states. [2020-12-23 11:12:25,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1436 to 1436. [2020-12-23 11:12:25,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1436 states. [2020-12-23 11:12:25,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 2203 transitions. [2020-12-23 11:12:25,535 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 2203 transitions. Word has length 64 [2020-12-23 11:12:25,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:12:25,536 INFO L481 AbstractCegarLoop]: Abstraction has 1436 states and 2203 transitions. [2020-12-23 11:12:25,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 11:12:25,537 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 2203 transitions. [2020-12-23 11:12:25,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-23 11:12:25,538 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:12:25,539 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 11:12:25,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 11:12:25,539 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:12:25,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:12:25,543 INFO L82 PathProgramCache]: Analyzing trace with hash -1553197975, now seen corresponding path program 1 times [2020-12-23 11:12:25,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:12:25,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677270146] [2020-12-23 11:12:25,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:12:25,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:12:25,618 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 11:12:25,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677270146] [2020-12-23 11:12:25,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:12:25,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 11:12:25,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821794842] [2020-12-23 11:12:25,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 11:12:25,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:12:25,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 11:12:25,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 11:12:25,621 INFO L87 Difference]: Start difference. First operand 1436 states and 2203 transitions. Second operand 5 states. [2020-12-23 11:12:25,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:12:25,839 INFO L93 Difference]: Finished difference Result 2838 states and 4372 transitions. [2020-12-23 11:12:25,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 11:12:25,840 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-12-23 11:12:25,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:12:25,848 INFO L225 Difference]: With dead ends: 2838 [2020-12-23 11:12:25,848 INFO L226 Difference]: Without dead ends: 1436 [2020-12-23 11:12:25,851 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 11:12:25,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1436 states. [2020-12-23 11:12:25,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1436 to 1436. [2020-12-23 11:12:25,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1436 states. [2020-12-23 11:12:25,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 2187 transitions. [2020-12-23 11:12:25,991 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 2187 transitions. Word has length 64 [2020-12-23 11:12:25,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:12:25,992 INFO L481 AbstractCegarLoop]: Abstraction has 1436 states and 2187 transitions. [2020-12-23 11:12:25,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 11:12:25,992 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 2187 transitions. [2020-12-23 11:12:25,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-23 11:12:25,993 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:12:25,993 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 11:12:25,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 11:12:25,993 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:12:25,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:12:25,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1277697764, now seen corresponding path program 1 times [2020-12-23 11:12:25,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:12:25,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274464789] [2020-12-23 11:12:25,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:12:26,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:12:26,105 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 11:12:26,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274464789] [2020-12-23 11:12:26,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:12:26,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 11:12:26,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206035701] [2020-12-23 11:12:26,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 11:12:26,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:12:26,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 11:12:26,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-23 11:12:26,108 INFO L87 Difference]: Start difference. First operand 1436 states and 2187 transitions. Second operand 7 states. [2020-12-23 11:12:27,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:12:27,491 INFO L93 Difference]: Finished difference Result 15456 states and 23717 transitions. [2020-12-23 11:12:27,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 11:12:27,492 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2020-12-23 11:12:27,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:12:27,563 INFO L225 Difference]: With dead ends: 15456 [2020-12-23 11:12:27,563 INFO L226 Difference]: Without dead ends: 14054 [2020-12-23 11:12:27,571 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-12-23 11:12:27,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14054 states. [2020-12-23 11:12:28,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14054 to 2836. [2020-12-23 11:12:28,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2836 states. [2020-12-23 11:12:28,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2836 states to 2836 states and 4275 transitions. [2020-12-23 11:12:28,105 INFO L78 Accepts]: Start accepts. Automaton has 2836 states and 4275 transitions. Word has length 64 [2020-12-23 11:12:28,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:12:28,106 INFO L481 AbstractCegarLoop]: Abstraction has 2836 states and 4275 transitions. [2020-12-23 11:12:28,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 11:12:28,106 INFO L276 IsEmpty]: Start isEmpty. Operand 2836 states and 4275 transitions. [2020-12-23 11:12:28,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-23 11:12:28,113 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:12:28,114 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 11:12:28,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 11:12:28,114 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:12:28,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:12:28,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1414916288, now seen corresponding path program 1 times [2020-12-23 11:12:28,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:12:28,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338666126] [2020-12-23 11:12:28,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:12:28,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:12:28,228 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 11:12:28,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338666126] [2020-12-23 11:12:28,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:12:28,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:12:28,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421432204] [2020-12-23 11:12:28,234 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:12:28,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:12:28,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:12:28,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:12:28,236 INFO L87 Difference]: Start difference. First operand 2836 states and 4275 transitions. Second operand 3 states. [2020-12-23 11:12:28,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:12:28,856 INFO L93 Difference]: Finished difference Result 8088 states and 12149 transitions. [2020-12-23 11:12:28,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:12:28,858 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2020-12-23 11:12:28,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:12:28,888 INFO L225 Difference]: With dead ends: 8088 [2020-12-23 11:12:28,888 INFO L226 Difference]: Without dead ends: 5286 [2020-12-23 11:12:28,894 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 11:12:28,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5286 states. [2020-12-23 11:12:29,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5286 to 5220. [2020-12-23 11:12:29,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5220 states. [2020-12-23 11:12:29,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5220 states to 5220 states and 7683 transitions. [2020-12-23 11:12:29,481 INFO L78 Accepts]: Start accepts. Automaton has 5220 states and 7683 transitions. Word has length 66 [2020-12-23 11:12:29,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:12:29,482 INFO L481 AbstractCegarLoop]: Abstraction has 5220 states and 7683 transitions. [2020-12-23 11:12:29,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:12:29,482 INFO L276 IsEmpty]: Start isEmpty. Operand 5220 states and 7683 transitions. [2020-12-23 11:12:29,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-23 11:12:29,483 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:12:29,483 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 11:12:29,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 11:12:29,484 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:12:29,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:12:29,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1393913633, now seen corresponding path program 1 times [2020-12-23 11:12:29,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:12:29,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181068362] [2020-12-23 11:12:29,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:12:29,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:12:29,774 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 11:12:29,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181068362] [2020-12-23 11:12:29,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:12:29,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 11:12:29,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712945721] [2020-12-23 11:12:29,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 11:12:29,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:12:29,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 11:12:29,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-23 11:12:29,777 INFO L87 Difference]: Start difference. First operand 5220 states and 7683 transitions. Second operand 7 states. [2020-12-23 11:12:30,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:12:30,614 INFO L93 Difference]: Finished difference Result 10408 states and 15333 transitions. [2020-12-23 11:12:30,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 11:12:30,615 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 66 [2020-12-23 11:12:30,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:12:30,652 INFO L225 Difference]: With dead ends: 10408 [2020-12-23 11:12:30,652 INFO L226 Difference]: Without dead ends: 5222 [2020-12-23 11:12:30,660 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-12-23 11:12:30,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5222 states. [2020-12-23 11:12:31,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5222 to 5220. [2020-12-23 11:12:31,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5220 states. [2020-12-23 11:12:31,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5220 states to 5220 states and 7619 transitions. [2020-12-23 11:12:31,378 INFO L78 Accepts]: Start accepts. Automaton has 5220 states and 7619 transitions. Word has length 66 [2020-12-23 11:12:31,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:12:31,379 INFO L481 AbstractCegarLoop]: Abstraction has 5220 states and 7619 transitions. [2020-12-23 11:12:31,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 11:12:31,379 INFO L276 IsEmpty]: Start isEmpty. Operand 5220 states and 7619 transitions. [2020-12-23 11:12:31,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-23 11:12:31,380 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:12:31,380 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 11:12:31,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 11:12:31,381 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:12:31,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:12:31,382 INFO L82 PathProgramCache]: Analyzing trace with hash -573930250, now seen corresponding path program 1 times [2020-12-23 11:12:31,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:12:31,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258068774] [2020-12-23 11:12:31,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:12:31,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:12:31,456 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 11:12:31,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258068774] [2020-12-23 11:12:31,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:12:31,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:12:31,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182104948] [2020-12-23 11:12:31,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:12:31,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:12:31,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:12:31,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:12:31,460 INFO L87 Difference]: Start difference. First operand 5220 states and 7619 transitions. Second operand 3 states. [2020-12-23 11:12:32,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:12:32,249 INFO L93 Difference]: Finished difference Result 10187 states and 15017 transitions. [2020-12-23 11:12:32,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:12:32,250 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2020-12-23 11:12:32,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:12:32,272 INFO L225 Difference]: With dead ends: 10187 [2020-12-23 11:12:32,273 INFO L226 Difference]: Without dead ends: 7384 [2020-12-23 11:12:32,281 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 11:12:32,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7384 states. [2020-12-23 11:12:33,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7384 to 7382. [2020-12-23 11:12:33,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7382 states. [2020-12-23 11:12:33,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7382 states to 7382 states and 10741 transitions. [2020-12-23 11:12:33,117 INFO L78 Accepts]: Start accepts. Automaton has 7382 states and 10741 transitions. Word has length 67 [2020-12-23 11:12:33,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:12:33,117 INFO L481 AbstractCegarLoop]: Abstraction has 7382 states and 10741 transitions. [2020-12-23 11:12:33,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:12:33,117 INFO L276 IsEmpty]: Start isEmpty. Operand 7382 states and 10741 transitions. [2020-12-23 11:12:33,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-23 11:12:33,118 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:12:33,118 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 11:12:33,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 11:12:33,119 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:12:33,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:12:33,119 INFO L82 PathProgramCache]: Analyzing trace with hash -263559015, now seen corresponding path program 1 times [2020-12-23 11:12:33,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:12:33,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627710695] [2020-12-23 11:12:33,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:12:33,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:12:33,245 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 11:12:33,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627710695] [2020-12-23 11:12:33,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:12:33,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 11:12:33,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066136575] [2020-12-23 11:12:33,246 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 11:12:33,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:12:33,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 11:12:33,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 11:12:33,249 INFO L87 Difference]: Start difference. First operand 7382 states and 10741 transitions. Second operand 5 states. [2020-12-23 11:12:34,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:12:34,674 INFO L93 Difference]: Finished difference Result 13277 states and 19252 transitions. [2020-12-23 11:12:34,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 11:12:34,674 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2020-12-23 11:12:34,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:12:34,708 INFO L225 Difference]: With dead ends: 13277 [2020-12-23 11:12:34,709 INFO L226 Difference]: Without dead ends: 13275 [2020-12-23 11:12:34,715 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-23 11:12:34,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13275 states. [2020-12-23 11:12:35,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13275 to 7638. [2020-12-23 11:12:35,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7638 states. [2020-12-23 11:12:35,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7638 states to 7638 states and 10965 transitions. [2020-12-23 11:12:35,682 INFO L78 Accepts]: Start accepts. Automaton has 7638 states and 10965 transitions. Word has length 67 [2020-12-23 11:12:35,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:12:35,682 INFO L481 AbstractCegarLoop]: Abstraction has 7638 states and 10965 transitions. [2020-12-23 11:12:35,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 11:12:35,682 INFO L276 IsEmpty]: Start isEmpty. Operand 7638 states and 10965 transitions. [2020-12-23 11:12:35,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-23 11:12:35,686 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:12:35,686 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:12:35,686 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-23 11:12:35,686 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:12:35,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:12:35,687 INFO L82 PathProgramCache]: Analyzing trace with hash 1999510602, now seen corresponding path program 1 times [2020-12-23 11:12:35,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:12:35,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886477456] [2020-12-23 11:12:35,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:12:35,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:12:35,811 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-23 11:12:35,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886477456] [2020-12-23 11:12:35,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:12:35,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 11:12:35,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408428816] [2020-12-23 11:12:35,812 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 11:12:35,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:12:35,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 11:12:35,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-23 11:12:35,813 INFO L87 Difference]: Start difference. First operand 7638 states and 10965 transitions. Second operand 7 states. [2020-12-23 11:12:39,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:12:39,309 INFO L93 Difference]: Finished difference Result 47082 states and 67603 transitions. [2020-12-23 11:12:39,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 11:12:39,310 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2020-12-23 11:12:39,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:12:39,405 INFO L225 Difference]: With dead ends: 47082 [2020-12-23 11:12:39,406 INFO L226 Difference]: Without dead ends: 39480 [2020-12-23 11:12:39,429 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-23 11:12:39,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39480 states. [2020-12-23 11:12:41,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39480 to 15238. [2020-12-23 11:12:41,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15238 states. [2020-12-23 11:12:41,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15238 states to 15238 states and 21797 transitions. [2020-12-23 11:12:41,204 INFO L78 Accepts]: Start accepts. Automaton has 15238 states and 21797 transitions. Word has length 94 [2020-12-23 11:12:41,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:12:41,204 INFO L481 AbstractCegarLoop]: Abstraction has 15238 states and 21797 transitions. [2020-12-23 11:12:41,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 11:12:41,204 INFO L276 IsEmpty]: Start isEmpty. Operand 15238 states and 21797 transitions. [2020-12-23 11:12:41,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-23 11:12:41,208 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:12:41,208 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:12:41,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-23 11:12:41,209 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:12:41,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:12:41,209 INFO L82 PathProgramCache]: Analyzing trace with hash 845564496, now seen corresponding path program 1 times [2020-12-23 11:12:41,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:12:41,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085280911] [2020-12-23 11:12:41,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:12:41,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:12:41,322 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-12-23 11:12:41,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085280911] [2020-12-23 11:12:41,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:12:41,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 11:12:41,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154407490] [2020-12-23 11:12:41,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 11:12:41,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:12:41,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 11:12:41,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-23 11:12:41,324 INFO L87 Difference]: Start difference. First operand 15238 states and 21797 transitions. Second operand 7 states. [2020-12-23 11:12:45,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:12:45,254 INFO L93 Difference]: Finished difference Result 54682 states and 78435 transitions. [2020-12-23 11:12:45,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 11:12:45,254 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2020-12-23 11:12:45,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:12:45,377 INFO L225 Difference]: With dead ends: 54682 [2020-12-23 11:12:45,378 INFO L226 Difference]: Without dead ends: 47080 [2020-12-23 11:12:45,410 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-23 11:12:45,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47080 states. [2020-12-23 11:12:48,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47080 to 26654. [2020-12-23 11:12:48,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26654 states. [2020-12-23 11:12:48,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26654 states to 26654 states and 37965 transitions. [2020-12-23 11:12:48,252 INFO L78 Accepts]: Start accepts. Automaton has 26654 states and 37965 transitions. Word has length 94 [2020-12-23 11:12:48,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:12:48,253 INFO L481 AbstractCegarLoop]: Abstraction has 26654 states and 37965 transitions. [2020-12-23 11:12:48,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 11:12:48,253 INFO L276 IsEmpty]: Start isEmpty. Operand 26654 states and 37965 transitions. [2020-12-23 11:12:48,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-23 11:12:48,258 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:12:48,258 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:12:48,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-23 11:12:48,259 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:12:48,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:12:48,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1141609924, now seen corresponding path program 1 times [2020-12-23 11:12:48,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:12:48,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535098932] [2020-12-23 11:12:48,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:12:48,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:12:48,399 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-23 11:12:48,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535098932] [2020-12-23 11:12:48,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:12:48,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 11:12:48,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678818974] [2020-12-23 11:12:48,401 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 11:12:48,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:12:48,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 11:12:48,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-23 11:12:48,402 INFO L87 Difference]: Start difference. First operand 26654 states and 37965 transitions. Second operand 7 states. [2020-12-23 11:12:53,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:12:53,785 INFO L93 Difference]: Finished difference Result 62282 states and 89267 transitions. [2020-12-23 11:12:53,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 11:12:53,786 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2020-12-23 11:12:53,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:12:53,887 INFO L225 Difference]: With dead ends: 62282 [2020-12-23 11:12:53,887 INFO L226 Difference]: Without dead ends: 54680 [2020-12-23 11:12:53,913 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-23 11:12:53,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54680 states. [2020-12-23 11:12:57,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54680 to 34254. [2020-12-23 11:12:57,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34254 states. [2020-12-23 11:12:57,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34254 states to 34254 states and 48797 transitions. [2020-12-23 11:12:57,808 INFO L78 Accepts]: Start accepts. Automaton has 34254 states and 48797 transitions. Word has length 94 [2020-12-23 11:12:57,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:12:57,808 INFO L481 AbstractCegarLoop]: Abstraction has 34254 states and 48797 transitions. [2020-12-23 11:12:57,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 11:12:57,809 INFO L276 IsEmpty]: Start isEmpty. Operand 34254 states and 48797 transitions. [2020-12-23 11:12:57,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-23 11:12:57,813 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:12:57,813 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:12:57,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-23 11:12:57,814 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:12:57,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:12:57,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1724860738, now seen corresponding path program 1 times [2020-12-23 11:12:57,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:12:57,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690769163] [2020-12-23 11:12:57,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:12:57,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:12:58,033 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-23 11:12:58,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690769163] [2020-12-23 11:12:58,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:12:58,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 11:12:58,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75489535] [2020-12-23 11:12:58,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 11:12:58,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:12:58,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 11:12:58,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-23 11:12:58,037 INFO L87 Difference]: Start difference. First operand 34254 states and 48797 transitions. Second operand 7 states. [2020-12-23 11:13:03,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:13:03,805 INFO L93 Difference]: Finished difference Result 69882 states and 100099 transitions. [2020-12-23 11:13:03,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 11:13:03,806 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2020-12-23 11:13:03,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:13:03,903 INFO L225 Difference]: With dead ends: 69882 [2020-12-23 11:13:03,903 INFO L226 Difference]: Without dead ends: 62280 [2020-12-23 11:13:03,927 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-23 11:13:03,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62280 states. [2020-12-23 11:13:08,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62280 to 41854. [2020-12-23 11:13:08,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41854 states. [2020-12-23 11:13:08,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41854 states to 41854 states and 59629 transitions. [2020-12-23 11:13:08,497 INFO L78 Accepts]: Start accepts. Automaton has 41854 states and 59629 transitions. Word has length 94 [2020-12-23 11:13:08,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:13:08,498 INFO L481 AbstractCegarLoop]: Abstraction has 41854 states and 59629 transitions. [2020-12-23 11:13:08,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 11:13:08,498 INFO L276 IsEmpty]: Start isEmpty. Operand 41854 states and 59629 transitions. [2020-12-23 11:13:08,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-12-23 11:13:08,504 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:13:08,504 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:13:08,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-23 11:13:08,504 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:13:08,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:13:08,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1883520118, now seen corresponding path program 1 times [2020-12-23 11:13:08,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:13:08,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822217527] [2020-12-23 11:13:08,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:13:08,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:13:08,617 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 11:13:08,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822217527] [2020-12-23 11:13:08,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:13:08,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 11:13:08,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418336509] [2020-12-23 11:13:08,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 11:13:08,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:13:08,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 11:13:08,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-23 11:13:08,620 INFO L87 Difference]: Start difference. First operand 41854 states and 59629 transitions. Second operand 7 states. [2020-12-23 11:13:15,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:13:15,884 INFO L93 Difference]: Finished difference Result 72714 states and 104243 transitions. [2020-12-23 11:13:15,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 11:13:15,884 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 95 [2020-12-23 11:13:15,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:13:15,991 INFO L225 Difference]: With dead ends: 72714 [2020-12-23 11:13:15,991 INFO L226 Difference]: Without dead ends: 67496 [2020-12-23 11:13:16,018 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-23 11:13:16,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67496 states. [2020-12-23 11:13:21,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67496 to 47070. [2020-12-23 11:13:21,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47070 states. [2020-12-23 11:13:21,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47070 states to 47070 states and 67149 transitions. [2020-12-23 11:13:21,364 INFO L78 Accepts]: Start accepts. Automaton has 47070 states and 67149 transitions. Word has length 95 [2020-12-23 11:13:21,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:13:21,365 INFO L481 AbstractCegarLoop]: Abstraction has 47070 states and 67149 transitions. [2020-12-23 11:13:21,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 11:13:21,365 INFO L276 IsEmpty]: Start isEmpty. Operand 47070 states and 67149 transitions. [2020-12-23 11:13:21,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-12-23 11:13:21,371 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:13:21,372 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:13:21,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-23 11:13:21,372 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:13:21,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:13:21,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1641928633, now seen corresponding path program 1 times [2020-12-23 11:13:21,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:13:21,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763752486] [2020-12-23 11:13:21,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:13:21,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:13:21,615 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 11:13:21,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763752486] [2020-12-23 11:13:21,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064369192] [2020-12-23 11:13:21,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 11:13:21,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:13:21,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-23 11:13:21,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 11:13:22,285 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 11:13:22,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 11:13:22,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4] total 12 [2020-12-23 11:13:22,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371040249] [2020-12-23 11:13:22,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 11:13:22,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:13:22,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 11:13:22,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-12-23 11:13:22,289 INFO L87 Difference]: Start difference. First operand 47070 states and 67149 transitions. Second operand 12 states. [2020-12-23 11:13:24,176 WARN L197 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 29 [2020-12-23 11:14:04,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:14:04,512 INFO L93 Difference]: Finished difference Result 335322 states and 475251 transitions. [2020-12-23 11:14:04,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2020-12-23 11:14:04,512 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 96 [2020-12-23 11:14:04,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:14:05,437 INFO L225 Difference]: With dead ends: 335322 [2020-12-23 11:14:05,437 INFO L226 Difference]: Without dead ends: 301416 [2020-12-23 11:14:05,556 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2136 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=975, Invalid=4725, Unknown=0, NotChecked=0, Total=5700 [2020-12-23 11:14:05,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301416 states. [2020-12-23 11:14:23,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301416 to 119470. [2020-12-23 11:14:23,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119470 states. [2020-12-23 11:14:23,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119470 states to 119470 states and 167901 transitions. [2020-12-23 11:14:23,689 INFO L78 Accepts]: Start accepts. Automaton has 119470 states and 167901 transitions. Word has length 96 [2020-12-23 11:14:23,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:14:23,689 INFO L481 AbstractCegarLoop]: Abstraction has 119470 states and 167901 transitions. [2020-12-23 11:14:23,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 11:14:23,689 INFO L276 IsEmpty]: Start isEmpty. Operand 119470 states and 167901 transitions. [2020-12-23 11:14:23,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-12-23 11:14:23,699 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:14:23,700 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:14:23,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-23 11:14:23,915 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:14:23,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:14:23,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1309023430, now seen corresponding path program 1 times [2020-12-23 11:14:23,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:14:23,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805912024] [2020-12-23 11:14:23,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:14:23,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:14:23,982 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 11:14:23,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805912024] [2020-12-23 11:14:23,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:14:23,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:14:23,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440776260] [2020-12-23 11:14:23,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:14:23,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:14:23,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:14:23,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:14:23,985 INFO L87 Difference]: Start difference. First operand 119470 states and 167901 transitions. Second operand 3 states. [2020-12-23 11:14:33,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:14:33,282 INFO L93 Difference]: Finished difference Result 185878 states and 261654 transitions. [2020-12-23 11:14:33,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:14:33,283 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 96 [2020-12-23 11:14:33,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:14:33,555 INFO L225 Difference]: With dead ends: 185878 [2020-12-23 11:14:33,555 INFO L226 Difference]: Without dead ends: 66444 [2020-12-23 11:14:33,642 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 11:14:33,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66444 states. [2020-12-23 11:14:42,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66444 to 66442. [2020-12-23 11:14:42,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66442 states. [2020-12-23 11:14:43,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66442 states to 66442 states and 92482 transitions. [2020-12-23 11:14:43,046 INFO L78 Accepts]: Start accepts. Automaton has 66442 states and 92482 transitions. Word has length 96 [2020-12-23 11:14:43,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:14:43,046 INFO L481 AbstractCegarLoop]: Abstraction has 66442 states and 92482 transitions. [2020-12-23 11:14:43,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:14:43,046 INFO L276 IsEmpty]: Start isEmpty. Operand 66442 states and 92482 transitions. [2020-12-23 11:14:43,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-23 11:14:43,050 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:14:43,050 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:14:43,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-23 11:14:43,051 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:14:43,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:14:43,051 INFO L82 PathProgramCache]: Analyzing trace with hash 578980980, now seen corresponding path program 1 times [2020-12-23 11:14:43,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:14:43,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252768747] [2020-12-23 11:14:43,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:14:43,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:14:43,315 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 11:14:43,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252768747] [2020-12-23 11:14:43,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290459300] [2020-12-23 11:14:43,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 11:14:43,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:14:43,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-23 11:14:43,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 11:14:43,983 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 11:14:44,359 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 11:14:44,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 11:14:44,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2020-12-23 11:14:44,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171654025] [2020-12-23 11:14:44,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-23 11:14:44,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:14:44,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-23 11:14:44,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2020-12-23 11:14:44,366 INFO L87 Difference]: Start difference. First operand 66442 states and 92482 transitions. Second operand 17 states. [2020-12-23 11:14:46,156 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2020-12-23 11:14:46,700 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 36 [2020-12-23 11:14:46,953 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2020-12-23 11:14:47,864 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2020-12-23 11:14:48,033 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2020-12-23 11:14:48,961 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2020-12-23 11:14:49,497 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2020-12-23 11:14:49,768 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2020-12-23 11:14:50,421 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 36 [2020-12-23 11:14:53,766 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2020-12-23 11:14:54,191 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2020-12-23 11:14:54,332 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2020-12-23 11:14:55,726 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 37 [2020-12-23 11:15:00,200 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 40 [2020-12-23 11:15:00,836 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2020-12-23 11:15:03,935 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2020-12-23 11:15:05,381 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2020-12-23 11:15:06,188 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 39 [2020-12-23 11:15:06,429 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 40 [2020-12-23 11:15:06,661 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 39 [2020-12-23 11:15:07,526 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2020-12-23 11:15:08,031 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2020-12-23 11:15:08,721 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2020-12-23 11:15:09,035 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 42 [2020-12-23 11:15:21,305 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 36 [2020-12-23 11:15:22,738 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2020-12-23 11:15:24,731 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 39 [2020-12-23 11:15:34,187 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2020-12-23 11:15:35,860 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2020-12-23 11:15:37,865 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2020-12-23 11:15:39,886 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2020-12-23 11:15:40,045 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2020-12-23 11:15:41,741 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2020-12-23 11:15:41,910 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2020-12-23 11:15:44,404 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 36 [2020-12-23 11:15:46,106 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2020-12-23 11:15:46,484 WARN L197 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2020-12-23 11:15:48,005 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51