/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/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 19:43:36,060 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 19:43:36,063 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 19:43:36,117 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 19:43:36,117 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 19:43:36,119 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 19:43:36,121 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 19:43:36,123 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 19:43:36,125 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 19:43:36,126 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 19:43:36,127 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 19:43:36,129 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 19:43:36,129 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 19:43:36,130 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 19:43:36,132 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 19:43:36,133 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 19:43:36,134 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 19:43:36,135 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 19:43:36,137 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 19:43:36,154 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 19:43:36,157 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 19:43:36,163 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 19:43:36,166 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 19:43:36,167 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 19:43:36,176 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-06 19:43:36,176 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-06 19:43:36,177 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-06 19:43:36,181 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-06 19:43:36,182 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-06 19:43:36,183 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-06 19:43:36,183 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 19:43:36,184 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 19:43:36,185 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 19:43:36,186 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 19:43:36,189 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 19:43:36,189 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 19:43:36,190 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 19:43:36,190 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 19:43:36,194 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 19:43:36,195 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 19:43:36,199 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 19:43:36,201 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 19:43:36,248 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 19:43:36,248 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 19:43:36,253 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 19:43:36,253 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 19:43:36,253 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 19:43:36,254 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 19:43:36,254 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 19:43:36,254 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 19:43:36,254 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 19:43:36,254 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 19:43:36,256 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 19:43:36,256 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 19:43:36,257 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 19:43:36,257 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 19:43:36,257 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 19:43:36,257 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 19:43:36,258 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 19:43:36,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 19:43:36,258 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 19:43:36,259 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 19:43:36,260 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 19:43:36,261 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 19:43:36,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 19:43:36,267 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 19:43:36,267 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 19:43:36,267 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 19:43:36,661 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 19:43:36,695 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 19:43:36,698 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 19:43:36,700 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 19:43:36,701 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 19:43:36,702 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c [2021-01-06 19:43:36,803 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/515f6835e/21bc0c1d34364e52b60ac34f59fd4e19/FLAGd09d4b8c5 [2021-01-06 19:43:37,515 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 19:43:37,515 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c [2021-01-06 19:43:37,526 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/515f6835e/21bc0c1d34364e52b60ac34f59fd4e19/FLAGd09d4b8c5 [2021-01-06 19:43:37,857 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/515f6835e/21bc0c1d34364e52b60ac34f59fd4e19 [2021-01-06 19:43:37,861 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 19:43:37,864 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 19:43:37,868 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 19:43:37,868 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 19:43:37,872 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 19:43:37,873 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 07:43:37" (1/1) ... [2021-01-06 19:43:37,876 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@600109d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:43:37, skipping insertion in model container [2021-01-06 19:43:37,876 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 07:43:37" (1/1) ... [2021-01-06 19:43:37,890 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 19:43:37,949 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~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[~m1~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,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[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,] left hand side expression in assignment: lhs: VariableLHS[~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[~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[~p2_new~0,GLOBAL] 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[~m3~0,] left hand side expression in assignment: lhs: VariableLHS[~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[~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[~p3_new~0,GLOBAL] 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[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~c1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~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[~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[~c1~0,] [2021-01-06 19:43:38,204 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/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c[6787,6800] [2021-01-06 19:43:38,207 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 19:43:38,219 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~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[~m1~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,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[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,] left hand side expression in assignment: lhs: VariableLHS[~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[~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[~p2_new~0,GLOBAL] 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[~m3~0,] left hand side expression in assignment: lhs: VariableLHS[~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[~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[~p3_new~0,GLOBAL] 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[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~c1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~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[~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[~c1~0,] [2021-01-06 19:43:38,277 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/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c[6787,6800] [2021-01-06 19:43:38,278 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 19:43:38,302 INFO L208 MainTranslator]: Completed translation [2021-01-06 19:43:38,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:43:38 WrapperNode [2021-01-06 19:43:38,302 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 19:43:38,305 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 19:43:38,305 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 19:43:38,305 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 19:43:38,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:43:38" (1/1) ... [2021-01-06 19:43:38,329 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:43:38" (1/1) ... [2021-01-06 19:43:38,367 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 19:43:38,368 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 19:43:38,368 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 19:43:38,368 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 19:43:38,380 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:43:38" (1/1) ... [2021-01-06 19:43:38,381 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:43:38" (1/1) ... [2021-01-06 19:43:38,384 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:43:38" (1/1) ... [2021-01-06 19:43:38,385 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:43:38" (1/1) ... [2021-01-06 19:43:38,393 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:43:38" (1/1) ... [2021-01-06 19:43:38,402 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:43:38" (1/1) ... [2021-01-06 19:43:38,405 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:43:38" (1/1) ... [2021-01-06 19:43:38,410 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 19:43:38,411 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 19:43:38,412 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 19:43:38,412 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 19:43:38,413 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:43:38" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 19:43:38,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 19:43:38,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 19:43:38,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 19:43:38,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 19:43:39,457 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 19:43:39,457 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2021-01-06 19:43:39,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 07:43:39 BoogieIcfgContainer [2021-01-06 19:43:39,461 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 19:43:39,464 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 19:43:39,465 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 19:43:39,470 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 19:43:39,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 07:43:37" (1/3) ... [2021-01-06 19:43:39,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1839adce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 07:43:39, skipping insertion in model container [2021-01-06 19:43:39,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:43:38" (2/3) ... [2021-01-06 19:43:39,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1839adce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 07:43:39, skipping insertion in model container [2021-01-06 19:43:39,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 07:43:39" (3/3) ... [2021-01-06 19:43:39,480 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c [2021-01-06 19:43:39,489 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 19:43:39,495 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 19:43:39,516 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 19:43:39,566 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 19:43:39,567 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 19:43:39,567 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 19:43:39,567 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 19:43:39,568 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 19:43:39,568 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 19:43:39,568 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 19:43:39,568 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 19:43:39,588 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states. [2021-01-06 19:43:39,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-01-06 19:43:39,598 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:43:39,599 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] [2021-01-06 19:43:39,599 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:43:39,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:43:39,608 INFO L82 PathProgramCache]: Analyzing trace with hash -430581620, now seen corresponding path program 1 times [2021-01-06 19:43:39,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:43:39,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975724947] [2021-01-06 19:43:39,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:43:39,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:40,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:43:40,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975724947] [2021-01-06 19:43:40,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:43:40,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 19:43:40,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070468175] [2021-01-06 19:43:40,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 19:43:40,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:43:40,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 19:43:40,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 19:43:40,070 INFO L87 Difference]: Start difference. First operand 77 states. Second operand 5 states. [2021-01-06 19:43:40,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:43:40,174 INFO L93 Difference]: Finished difference Result 131 states and 213 transitions. [2021-01-06 19:43:40,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 19:43:40,178 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2021-01-06 19:43:40,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:43:40,201 INFO L225 Difference]: With dead ends: 131 [2021-01-06 19:43:40,202 INFO L226 Difference]: Without dead ends: 73 [2021-01-06 19:43:40,206 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-06 19:43:40,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-01-06 19:43:40,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-01-06 19:43:40,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2021-01-06 19:43:40,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 102 transitions. [2021-01-06 19:43:40,253 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 102 transitions. Word has length 25 [2021-01-06 19:43:40,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:43:40,253 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 102 transitions. [2021-01-06 19:43:40,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 19:43:40,254 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 102 transitions. [2021-01-06 19:43:40,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-01-06 19:43:40,256 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:43:40,256 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] [2021-01-06 19:43:40,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 19:43:40,257 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:43:40,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:43:40,258 INFO L82 PathProgramCache]: Analyzing trace with hash -482254910, now seen corresponding path program 1 times [2021-01-06 19:43:40,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:43:40,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727595208] [2021-01-06 19:43:40,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:43:40,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:40,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:43:40,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727595208] [2021-01-06 19:43:40,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:43:40,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:43:40,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641187638] [2021-01-06 19:43:40,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:43:40,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:43:40,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:43:40,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:43:40,373 INFO L87 Difference]: Start difference. First operand 73 states and 102 transitions. Second operand 3 states. [2021-01-06 19:43:40,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:43:40,422 INFO L93 Difference]: Finished difference Result 161 states and 240 transitions. [2021-01-06 19:43:40,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:43:40,422 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2021-01-06 19:43:40,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:43:40,425 INFO L225 Difference]: With dead ends: 161 [2021-01-06 19:43:40,425 INFO L226 Difference]: Without dead ends: 111 [2021-01-06 19:43:40,427 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:43:40,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-01-06 19:43:40,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 109. [2021-01-06 19:43:40,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2021-01-06 19:43:40,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 159 transitions. [2021-01-06 19:43:40,459 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 159 transitions. Word has length 41 [2021-01-06 19:43:40,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:43:40,459 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 159 transitions. [2021-01-06 19:43:40,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:43:40,460 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 159 transitions. [2021-01-06 19:43:40,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-01-06 19:43:40,465 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:43:40,466 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] [2021-01-06 19:43:40,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 19:43:40,466 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:43:40,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:43:40,468 INFO L82 PathProgramCache]: Analyzing trace with hash 2033327635, now seen corresponding path program 1 times [2021-01-06 19:43:40,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:43:40,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714076795] [2021-01-06 19:43:40,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:43:40,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:40,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:43:40,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714076795] [2021-01-06 19:43:40,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:43:40,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:43:40,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117853975] [2021-01-06 19:43:40,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:43:40,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:43:40,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:43:40,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:43:40,576 INFO L87 Difference]: Start difference. First operand 109 states and 159 transitions. Second operand 3 states. [2021-01-06 19:43:40,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:43:40,626 INFO L93 Difference]: Finished difference Result 257 states and 391 transitions. [2021-01-06 19:43:40,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:43:40,627 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2021-01-06 19:43:40,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:43:40,632 INFO L225 Difference]: With dead ends: 257 [2021-01-06 19:43:40,632 INFO L226 Difference]: Without dead ends: 171 [2021-01-06 19:43:40,637 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:43:40,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-01-06 19:43:40,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 169. [2021-01-06 19:43:40,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2021-01-06 19:43:40,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 252 transitions. [2021-01-06 19:43:40,658 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 252 transitions. Word has length 42 [2021-01-06 19:43:40,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:43:40,658 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 252 transitions. [2021-01-06 19:43:40,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:43:40,659 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 252 transitions. [2021-01-06 19:43:40,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-01-06 19:43:40,660 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:43:40,661 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] [2021-01-06 19:43:40,661 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 19:43:40,661 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:43:40,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:43:40,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1819327886, now seen corresponding path program 1 times [2021-01-06 19:43:40,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:43:40,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171201016] [2021-01-06 19:43:40,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:43:40,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:40,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:43:40,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171201016] [2021-01-06 19:43:40,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:43:40,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 19:43:40,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812765632] [2021-01-06 19:43:40,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 19:43:40,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:43:40,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 19:43:40,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-01-06 19:43:40,878 INFO L87 Difference]: Start difference. First operand 169 states and 252 transitions. Second operand 5 states. [2021-01-06 19:43:40,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:43:40,986 INFO L93 Difference]: Finished difference Result 571 states and 877 transitions. [2021-01-06 19:43:40,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 19:43:40,987 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2021-01-06 19:43:40,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:43:40,990 INFO L225 Difference]: With dead ends: 571 [2021-01-06 19:43:40,991 INFO L226 Difference]: Without dead ends: 425 [2021-01-06 19:43:40,992 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-01-06 19:43:40,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2021-01-06 19:43:41,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 421. [2021-01-06 19:43:41,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2021-01-06 19:43:41,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 642 transitions. [2021-01-06 19:43:41,041 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 642 transitions. Word has length 43 [2021-01-06 19:43:41,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:43:41,042 INFO L481 AbstractCegarLoop]: Abstraction has 421 states and 642 transitions. [2021-01-06 19:43:41,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 19:43:41,042 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 642 transitions. [2021-01-06 19:43:41,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-01-06 19:43:41,044 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:43:41,044 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:43:41,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 19:43:41,044 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:43:41,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:43:41,045 INFO L82 PathProgramCache]: Analyzing trace with hash 106320216, now seen corresponding path program 1 times [2021-01-06 19:43:41,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:43:41,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827272499] [2021-01-06 19:43:41,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:43:41,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:41,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:43:41,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827272499] [2021-01-06 19:43:41,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:43:41,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 19:43:41,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022387161] [2021-01-06 19:43:41,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 19:43:41,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:43:41,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 19:43:41,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 19:43:41,201 INFO L87 Difference]: Start difference. First operand 421 states and 642 transitions. Second operand 5 states. [2021-01-06 19:43:41,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:43:41,386 INFO L93 Difference]: Finished difference Result 1627 states and 2514 transitions. [2021-01-06 19:43:41,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 19:43:41,386 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2021-01-06 19:43:41,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:43:41,397 INFO L225 Difference]: With dead ends: 1627 [2021-01-06 19:43:41,397 INFO L226 Difference]: Without dead ends: 1229 [2021-01-06 19:43:41,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-06 19:43:41,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2021-01-06 19:43:41,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 817. [2021-01-06 19:43:41,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 817 states. [2021-01-06 19:43:41,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1236 transitions. [2021-01-06 19:43:41,510 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1236 transitions. Word has length 44 [2021-01-06 19:43:41,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:43:41,511 INFO L481 AbstractCegarLoop]: Abstraction has 817 states and 1236 transitions. [2021-01-06 19:43:41,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 19:43:41,512 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1236 transitions. [2021-01-06 19:43:41,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-01-06 19:43:41,520 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:43:41,520 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] [2021-01-06 19:43:41,521 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-06 19:43:41,521 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:43:41,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:43:41,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1382364025, now seen corresponding path program 1 times [2021-01-06 19:43:41,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:43:41,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671388967] [2021-01-06 19:43:41,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:43:41,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:41,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:43:41,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671388967] [2021-01-06 19:43:41,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:43:41,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-06 19:43:41,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286786340] [2021-01-06 19:43:41,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 19:43:41,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:43:41,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 19:43:41,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-01-06 19:43:41,717 INFO L87 Difference]: Start difference. First operand 817 states and 1236 transitions. Second operand 8 states. [2021-01-06 19:43:41,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:43:41,966 INFO L93 Difference]: Finished difference Result 1707 states and 2545 transitions. [2021-01-06 19:43:41,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 19:43:41,967 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 45 [2021-01-06 19:43:41,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:43:41,979 INFO L225 Difference]: With dead ends: 1707 [2021-01-06 19:43:41,979 INFO L226 Difference]: Without dead ends: 1705 [2021-01-06 19:43:41,982 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-01-06 19:43:41,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1705 states. [2021-01-06 19:43:42,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1705 to 889. [2021-01-06 19:43:42,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 889 states. [2021-01-06 19:43:42,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1308 transitions. [2021-01-06 19:43:42,060 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1308 transitions. Word has length 45 [2021-01-06 19:43:42,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:43:42,063 INFO L481 AbstractCegarLoop]: Abstraction has 889 states and 1308 transitions. [2021-01-06 19:43:42,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 19:43:42,064 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1308 transitions. [2021-01-06 19:43:42,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-01-06 19:43:42,066 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:43:42,067 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] [2021-01-06 19:43:42,067 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-06 19:43:42,067 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:43:42,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:43:42,073 INFO L82 PathProgramCache]: Analyzing trace with hash 148966672, now seen corresponding path program 1 times [2021-01-06 19:43:42,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:43:42,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541111762] [2021-01-06 19:43:42,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:43:42,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:42,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:43:42,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541111762] [2021-01-06 19:43:42,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:43:42,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:43:42,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070748524] [2021-01-06 19:43:42,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:43:42,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:43:42,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:43:42,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:43:42,187 INFO L87 Difference]: Start difference. First operand 889 states and 1308 transitions. Second operand 3 states. [2021-01-06 19:43:42,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:43:42,314 INFO L93 Difference]: Finished difference Result 2325 states and 3410 transitions. [2021-01-06 19:43:42,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:43:42,314 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2021-01-06 19:43:42,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:43:42,323 INFO L225 Difference]: With dead ends: 2325 [2021-01-06 19:43:42,323 INFO L226 Difference]: Without dead ends: 1459 [2021-01-06 19:43:42,327 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:43:42,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1459 states. [2021-01-06 19:43:42,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1459 to 1437. [2021-01-06 19:43:42,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1437 states. [2021-01-06 19:43:42,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1437 states to 1437 states and 2064 transitions. [2021-01-06 19:43:42,455 INFO L78 Accepts]: Start accepts. Automaton has 1437 states and 2064 transitions. Word has length 46 [2021-01-06 19:43:42,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:43:42,456 INFO L481 AbstractCegarLoop]: Abstraction has 1437 states and 2064 transitions. [2021-01-06 19:43:42,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:43:42,456 INFO L276 IsEmpty]: Start isEmpty. Operand 1437 states and 2064 transitions. [2021-01-06 19:43:42,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-01-06 19:43:42,457 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:43:42,457 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] [2021-01-06 19:43:42,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-06 19:43:42,458 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:43:42,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:43:42,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1623386325, now seen corresponding path program 1 times [2021-01-06 19:43:42,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:43:42,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459501101] [2021-01-06 19:43:42,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:43:42,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:42,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:43:42,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459501101] [2021-01-06 19:43:42,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:43:42,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:43:42,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366780052] [2021-01-06 19:43:42,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:43:42,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:43:42,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:43:42,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:43:42,529 INFO L87 Difference]: Start difference. First operand 1437 states and 2064 transitions. Second operand 3 states. [2021-01-06 19:43:42,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:43:42,669 INFO L93 Difference]: Finished difference Result 2908 states and 4206 transitions. [2021-01-06 19:43:42,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:43:42,670 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2021-01-06 19:43:42,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:43:42,682 INFO L225 Difference]: With dead ends: 2908 [2021-01-06 19:43:42,682 INFO L226 Difference]: Without dead ends: 2041 [2021-01-06 19:43:42,684 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:43:42,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2041 states. [2021-01-06 19:43:42,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2041 to 2039. [2021-01-06 19:43:42,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2039 states. [2021-01-06 19:43:42,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2039 states to 2039 states and 2894 transitions. [2021-01-06 19:43:42,876 INFO L78 Accepts]: Start accepts. Automaton has 2039 states and 2894 transitions. Word has length 47 [2021-01-06 19:43:42,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:43:42,876 INFO L481 AbstractCegarLoop]: Abstraction has 2039 states and 2894 transitions. [2021-01-06 19:43:42,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:43:42,877 INFO L276 IsEmpty]: Start isEmpty. Operand 2039 states and 2894 transitions. [2021-01-06 19:43:42,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-01-06 19:43:42,880 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:43:42,880 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:43:42,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-06 19:43:42,880 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:43:42,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:43:42,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1424447674, now seen corresponding path program 1 times [2021-01-06 19:43:42,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:43:42,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476199023] [2021-01-06 19:43:42,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:43:42,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:43,016 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-01-06 19:43:43,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476199023] [2021-01-06 19:43:43,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:43:43,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 19:43:43,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224831660] [2021-01-06 19:43:43,022 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 19:43:43,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:43:43,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 19:43:43,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 19:43:43,024 INFO L87 Difference]: Start difference. First operand 2039 states and 2894 transitions. Second operand 5 states. [2021-01-06 19:43:43,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:43:43,239 INFO L93 Difference]: Finished difference Result 3629 states and 5206 transitions. [2021-01-06 19:43:43,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 19:43:43,240 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2021-01-06 19:43:43,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:43:43,255 INFO L225 Difference]: With dead ends: 3629 [2021-01-06 19:43:43,255 INFO L226 Difference]: Without dead ends: 2895 [2021-01-06 19:43:43,258 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-01-06 19:43:43,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2895 states. [2021-01-06 19:43:43,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2895 to 2633. [2021-01-06 19:43:43,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2633 states. [2021-01-06 19:43:43,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2633 states to 2633 states and 3740 transitions. [2021-01-06 19:43:43,456 INFO L78 Accepts]: Start accepts. Automaton has 2633 states and 3740 transitions. Word has length 65 [2021-01-06 19:43:43,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:43:43,457 INFO L481 AbstractCegarLoop]: Abstraction has 2633 states and 3740 transitions. [2021-01-06 19:43:43,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 19:43:43,457 INFO L276 IsEmpty]: Start isEmpty. Operand 2633 states and 3740 transitions. [2021-01-06 19:43:43,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-01-06 19:43:43,460 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:43:43,460 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:43:43,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-01-06 19:43:43,461 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:43:43,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:43:43,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1851793738, now seen corresponding path program 1 times [2021-01-06 19:43:43,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:43:43,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813491846] [2021-01-06 19:43:43,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:43:43,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:43,505 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:43:43,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813491846] [2021-01-06 19:43:43,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:43:43,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:43:43,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128237949] [2021-01-06 19:43:43,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:43:43,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:43:43,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:43:43,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:43:43,508 INFO L87 Difference]: Start difference. First operand 2633 states and 3740 transitions. Second operand 3 states. [2021-01-06 19:43:43,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:43:43,706 INFO L93 Difference]: Finished difference Result 4329 states and 6123 transitions. [2021-01-06 19:43:43,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:43:43,707 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2021-01-06 19:43:43,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:43:43,722 INFO L225 Difference]: With dead ends: 4329 [2021-01-06 19:43:43,722 INFO L226 Difference]: Without dead ends: 2821 [2021-01-06 19:43:43,726 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:43:43,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2821 states. [2021-01-06 19:43:43,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2821 to 2684. [2021-01-06 19:43:43,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2684 states. [2021-01-06 19:43:43,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2684 states to 2684 states and 3733 transitions. [2021-01-06 19:43:43,984 INFO L78 Accepts]: Start accepts. Automaton has 2684 states and 3733 transitions. Word has length 65 [2021-01-06 19:43:43,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:43:43,984 INFO L481 AbstractCegarLoop]: Abstraction has 2684 states and 3733 transitions. [2021-01-06 19:43:43,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:43:43,984 INFO L276 IsEmpty]: Start isEmpty. Operand 2684 states and 3733 transitions. [2021-01-06 19:43:43,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-01-06 19:43:43,986 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:43:43,987 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:43:43,987 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-01-06 19:43:43,987 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:43:43,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:43:43,988 INFO L82 PathProgramCache]: Analyzing trace with hash 1897995876, now seen corresponding path program 1 times [2021-01-06 19:43:43,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:43:43,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896455409] [2021-01-06 19:43:43,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:43:44,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:44,095 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-01-06 19:43:44,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896455409] [2021-01-06 19:43:44,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:43:44,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 19:43:44,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615535222] [2021-01-06 19:43:44,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 19:43:44,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:43:44,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 19:43:44,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 19:43:44,098 INFO L87 Difference]: Start difference. First operand 2684 states and 3733 transitions. Second operand 5 states. [2021-01-06 19:43:44,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:43:44,354 INFO L93 Difference]: Finished difference Result 3713 states and 5212 transitions. [2021-01-06 19:43:44,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 19:43:44,354 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2021-01-06 19:43:44,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:43:44,371 INFO L225 Difference]: With dead ends: 3713 [2021-01-06 19:43:44,371 INFO L226 Difference]: Without dead ends: 3333 [2021-01-06 19:43:44,373 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-01-06 19:43:44,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3333 states. [2021-01-06 19:43:44,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3333 to 3050. [2021-01-06 19:43:44,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3050 states. [2021-01-06 19:43:44,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3050 states to 3050 states and 4251 transitions. [2021-01-06 19:43:44,563 INFO L78 Accepts]: Start accepts. Automaton has 3050 states and 4251 transitions. Word has length 65 [2021-01-06 19:43:44,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:43:44,563 INFO L481 AbstractCegarLoop]: Abstraction has 3050 states and 4251 transitions. [2021-01-06 19:43:44,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 19:43:44,563 INFO L276 IsEmpty]: Start isEmpty. Operand 3050 states and 4251 transitions. [2021-01-06 19:43:44,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-01-06 19:43:44,566 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:43:44,566 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] [2021-01-06 19:43:44,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-01-06 19:43:44,566 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:43:44,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:43:44,567 INFO L82 PathProgramCache]: Analyzing trace with hash -537160168, now seen corresponding path program 1 times [2021-01-06 19:43:44,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:43:44,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750374131] [2021-01-06 19:43:44,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:43:44,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:44,912 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:43:44,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750374131] [2021-01-06 19:43:44,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842619660] [2021-01-06 19:43:44,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:43:45,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:45,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 4 conjunts are in the unsatisfiable core [2021-01-06 19:43:45,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:43:45,449 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-06 19:43:45,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:43:45,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4] total 12 [2021-01-06 19:43:45,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289303487] [2021-01-06 19:43:45,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-06 19:43:45,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:43:45,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-06 19:43:45,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-01-06 19:43:45,456 INFO L87 Difference]: Start difference. First operand 3050 states and 4251 transitions. Second operand 12 states. [2021-01-06 19:43:50,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:43:50,998 INFO L93 Difference]: Finished difference Result 30163 states and 41620 transitions. [2021-01-06 19:43:50,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-01-06 19:43:50,999 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 66 [2021-01-06 19:43:50,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:43:51,091 INFO L225 Difference]: With dead ends: 30163 [2021-01-06 19:43:51,091 INFO L226 Difference]: Without dead ends: 27181 [2021-01-06 19:43:51,105 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1994 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1013, Invalid=4389, Unknown=0, NotChecked=0, Total=5402 [2021-01-06 19:43:51,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27181 states. [2021-01-06 19:43:52,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27181 to 15138. [2021-01-06 19:43:52,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15138 states. [2021-01-06 19:43:52,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15138 states to 15138 states and 20809 transitions. [2021-01-06 19:43:52,344 INFO L78 Accepts]: Start accepts. Automaton has 15138 states and 20809 transitions. Word has length 66 [2021-01-06 19:43:52,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:43:52,345 INFO L481 AbstractCegarLoop]: Abstraction has 15138 states and 20809 transitions. [2021-01-06 19:43:52,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-06 19:43:52,345 INFO L276 IsEmpty]: Start isEmpty. Operand 15138 states and 20809 transitions. [2021-01-06 19:43:52,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-01-06 19:43:52,349 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:43:52,349 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:43:52,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-01-06 19:43:52,565 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:43:52,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:43:52,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1621665879, now seen corresponding path program 1 times [2021-01-06 19:43:52,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:43:52,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538030243] [2021-01-06 19:43:52,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:43:52,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:52,616 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:43:52,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538030243] [2021-01-06 19:43:52,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:43:52,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:43:52,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781782117] [2021-01-06 19:43:52,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:43:52,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:43:52,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:43:52,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:43:52,618 INFO L87 Difference]: Start difference. First operand 15138 states and 20809 transitions. Second operand 3 states. [2021-01-06 19:43:53,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:43:53,905 INFO L93 Difference]: Finished difference Result 38521 states and 52833 transitions. [2021-01-06 19:43:53,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:43:53,905 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2021-01-06 19:43:53,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:43:53,968 INFO L225 Difference]: With dead ends: 38521 [2021-01-06 19:43:53,968 INFO L226 Difference]: Without dead ends: 26335 [2021-01-06 19:43:53,992 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:43:54,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26335 states. [2021-01-06 19:43:55,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26335 to 26295. [2021-01-06 19:43:55,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26295 states. [2021-01-06 19:43:55,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26295 states to 26295 states and 35607 transitions. [2021-01-06 19:43:55,490 INFO L78 Accepts]: Start accepts. Automaton has 26295 states and 35607 transitions. Word has length 67 [2021-01-06 19:43:55,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:43:55,490 INFO L481 AbstractCegarLoop]: Abstraction has 26295 states and 35607 transitions. [2021-01-06 19:43:55,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:43:55,491 INFO L276 IsEmpty]: Start isEmpty. Operand 26295 states and 35607 transitions. [2021-01-06 19:43:55,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-01-06 19:43:55,497 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:43:55,498 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:43:55,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-01-06 19:43:55,498 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:43:55,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:43:55,499 INFO L82 PathProgramCache]: Analyzing trace with hash -795873130, now seen corresponding path program 1 times [2021-01-06 19:43:55,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:43:55,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476760356] [2021-01-06 19:43:55,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:43:55,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:55,573 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-06 19:43:55,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476760356] [2021-01-06 19:43:55,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:43:55,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 19:43:55,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509692991] [2021-01-06 19:43:55,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 19:43:55,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:43:55,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 19:43:55,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 19:43:55,576 INFO L87 Difference]: Start difference. First operand 26295 states and 35607 transitions. Second operand 5 states. [2021-01-06 19:43:57,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:43:57,314 INFO L93 Difference]: Finished difference Result 39265 states and 53650 transitions. [2021-01-06 19:43:57,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 19:43:57,314 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2021-01-06 19:43:57,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:43:57,383 INFO L225 Difference]: With dead ends: 39265 [2021-01-06 19:43:57,383 INFO L226 Difference]: Without dead ends: 33805 [2021-01-06 19:43:57,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-01-06 19:43:57,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33805 states. [2021-01-06 19:43:59,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33805 to 30865. [2021-01-06 19:43:59,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30865 states. [2021-01-06 19:43:59,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30865 states to 30865 states and 41737 transitions. [2021-01-06 19:43:59,205 INFO L78 Accepts]: Start accepts. Automaton has 30865 states and 41737 transitions. Word has length 68 [2021-01-06 19:43:59,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:43:59,205 INFO L481 AbstractCegarLoop]: Abstraction has 30865 states and 41737 transitions. [2021-01-06 19:43:59,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 19:43:59,205 INFO L276 IsEmpty]: Start isEmpty. Operand 30865 states and 41737 transitions. [2021-01-06 19:43:59,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-01-06 19:43:59,211 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:43:59,212 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:43:59,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-01-06 19:43:59,212 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:43:59,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:43:59,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1262533899, now seen corresponding path program 1 times [2021-01-06 19:43:59,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:43:59,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048820815] [2021-01-06 19:43:59,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:43:59,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:59,282 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:43:59,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048820815] [2021-01-06 19:43:59,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:43:59,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:43:59,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991787071] [2021-01-06 19:43:59,286 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:43:59,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:43:59,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:43:59,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:43:59,287 INFO L87 Difference]: Start difference. First operand 30865 states and 41737 transitions. Second operand 3 states. [2021-01-06 19:44:01,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:44:01,368 INFO L93 Difference]: Finished difference Result 69113 states and 93016 transitions. [2021-01-06 19:44:01,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:44:01,369 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2021-01-06 19:44:01,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:44:01,439 INFO L225 Difference]: With dead ends: 69113 [2021-01-06 19:44:01,439 INFO L226 Difference]: Without dead ends: 40731 [2021-01-06 19:44:01,478 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:44:01,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40731 states. [2021-01-06 19:44:03,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40731 to 28226. [2021-01-06 19:44:03,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28226 states. [2021-01-06 19:44:03,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28226 states to 28226 states and 37633 transitions. [2021-01-06 19:44:03,321 INFO L78 Accepts]: Start accepts. Automaton has 28226 states and 37633 transitions. Word has length 68 [2021-01-06 19:44:03,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:44:03,321 INFO L481 AbstractCegarLoop]: Abstraction has 28226 states and 37633 transitions. [2021-01-06 19:44:03,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:44:03,321 INFO L276 IsEmpty]: Start isEmpty. Operand 28226 states and 37633 transitions. [2021-01-06 19:44:03,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-01-06 19:44:03,329 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:44:03,329 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:44:03,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-01-06 19:44:03,330 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:44:03,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:44:03,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1415273777, now seen corresponding path program 1 times [2021-01-06 19:44:03,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:44:03,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603423575] [2021-01-06 19:44:03,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:44:03,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:44:03,455 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:44:03,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603423575] [2021-01-06 19:44:03,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059766702] [2021-01-06 19:44:03,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:44:03,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:44:03,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 6 conjunts are in the unsatisfiable core [2021-01-06 19:44:03,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:44:03,746 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:44:03,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:44:03,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-01-06 19:44:03,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369981019] [2021-01-06 19:44:03,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-06 19:44:03,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:44:03,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-06 19:44:03,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-01-06 19:44:03,749 INFO L87 Difference]: Start difference. First operand 28226 states and 37633 transitions. Second operand 11 states. [2021-01-06 19:44:06,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:44:06,860 INFO L93 Difference]: Finished difference Result 64706 states and 86179 transitions. [2021-01-06 19:44:06,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 19:44:06,861 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 69 [2021-01-06 19:44:06,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:44:06,925 INFO L225 Difference]: With dead ends: 64706 [2021-01-06 19:44:06,925 INFO L226 Difference]: Without dead ends: 48437 [2021-01-06 19:44:06,945 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2021-01-06 19:44:06,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48437 states. [2021-01-06 19:44:08,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48437 to 28898. [2021-01-06 19:44:08,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28898 states. [2021-01-06 19:44:08,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28898 states to 28898 states and 38793 transitions. [2021-01-06 19:44:08,985 INFO L78 Accepts]: Start accepts. Automaton has 28898 states and 38793 transitions. Word has length 69 [2021-01-06 19:44:08,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:44:08,986 INFO L481 AbstractCegarLoop]: Abstraction has 28898 states and 38793 transitions. [2021-01-06 19:44:08,986 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-06 19:44:08,986 INFO L276 IsEmpty]: Start isEmpty. Operand 28898 states and 38793 transitions. [2021-01-06 19:44:08,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-01-06 19:44:08,994 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:44:08,995 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] [2021-01-06 19:44:09,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-01-06 19:44:09,209 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:44:09,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:44:09,209 INFO L82 PathProgramCache]: Analyzing trace with hash -1825080492, now seen corresponding path program 1 times [2021-01-06 19:44:09,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:44:09,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082737404] [2021-01-06 19:44:09,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:44:09,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:44:09,265 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:44:09,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082737404] [2021-01-06 19:44:09,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:44:09,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:44:09,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49410177] [2021-01-06 19:44:09,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:44:09,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:44:09,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:44:09,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:44:09,269 INFO L87 Difference]: Start difference. First operand 28898 states and 38793 transitions. Second operand 3 states. [2021-01-06 19:44:11,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:44:11,131 INFO L93 Difference]: Finished difference Result 32331 states and 43120 transitions. [2021-01-06 19:44:11,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:44:11,132 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2021-01-06 19:44:11,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:44:11,153 INFO L225 Difference]: With dead ends: 32331 [2021-01-06 19:44:11,153 INFO L226 Difference]: Without dead ends: 19878 [2021-01-06 19:44:11,162 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:44:11,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19878 states. [2021-01-06 19:44:12,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19878 to 19860. [2021-01-06 19:44:12,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19860 states. [2021-01-06 19:44:12,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19860 states to 19860 states and 26138 transitions. [2021-01-06 19:44:12,256 INFO L78 Accepts]: Start accepts. Automaton has 19860 states and 26138 transitions. Word has length 71 [2021-01-06 19:44:12,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:44:12,256 INFO L481 AbstractCegarLoop]: Abstraction has 19860 states and 26138 transitions. [2021-01-06 19:44:12,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:44:12,257 INFO L276 IsEmpty]: Start isEmpty. Operand 19860 states and 26138 transitions. [2021-01-06 19:44:12,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-01-06 19:44:12,262 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:44:12,263 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:44:12,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-01-06 19:44:12,263 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:44:12,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:44:12,263 INFO L82 PathProgramCache]: Analyzing trace with hash 579906845, now seen corresponding path program 1 times [2021-01-06 19:44:12,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:44:12,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360290277] [2021-01-06 19:44:12,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:44:12,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:44:12,344 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-06 19:44:12,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360290277] [2021-01-06 19:44:12,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:44:12,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 19:44:12,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029520917] [2021-01-06 19:44:12,345 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 19:44:12,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:44:12,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 19:44:12,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-01-06 19:44:12,346 INFO L87 Difference]: Start difference. First operand 19860 states and 26138 transitions. Second operand 7 states. [2021-01-06 19:44:14,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:44:14,716 INFO L93 Difference]: Finished difference Result 52254 states and 68561 transitions. [2021-01-06 19:44:14,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 19:44:14,717 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 72 [2021-01-06 19:44:14,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:44:14,754 INFO L225 Difference]: With dead ends: 52254 [2021-01-06 19:44:14,754 INFO L226 Difference]: Without dead ends: 32444 [2021-01-06 19:44:14,770 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-01-06 19:44:14,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32444 states. [2021-01-06 19:44:16,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32444 to 31336. [2021-01-06 19:44:16,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31336 states. [2021-01-06 19:44:16,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31336 states to 31336 states and 40753 transitions. [2021-01-06 19:44:16,939 INFO L78 Accepts]: Start accepts. Automaton has 31336 states and 40753 transitions. Word has length 72 [2021-01-06 19:44:16,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:44:16,940 INFO L481 AbstractCegarLoop]: Abstraction has 31336 states and 40753 transitions. [2021-01-06 19:44:16,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 19:44:16,940 INFO L276 IsEmpty]: Start isEmpty. Operand 31336 states and 40753 transitions. [2021-01-06 19:44:16,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-01-06 19:44:16,944 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:44:16,945 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:44:16,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-01-06 19:44:16,945 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:44:16,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:44:16,945 INFO L82 PathProgramCache]: Analyzing trace with hash 696301333, now seen corresponding path program 1 times [2021-01-06 19:44:16,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:44:16,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431843518] [2021-01-06 19:44:16,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:44:16,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:44:17,039 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:44:17,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431843518] [2021-01-06 19:44:17,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12256467] [2021-01-06 19:44:17,039 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:44:17,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:44:17,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 6 conjunts are in the unsatisfiable core [2021-01-06 19:44:17,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:44:17,367 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:44:17,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:44:17,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-01-06 19:44:17,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677974679] [2021-01-06 19:44:17,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-06 19:44:17,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:44:17,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-06 19:44:17,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-01-06 19:44:17,373 INFO L87 Difference]: Start difference. First operand 31336 states and 40753 transitions. Second operand 11 states. [2021-01-06 19:44:21,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:44:21,350 INFO L93 Difference]: Finished difference Result 74544 states and 96637 transitions. [2021-01-06 19:44:21,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 19:44:21,351 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 72 [2021-01-06 19:44:21,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:44:21,413 INFO L225 Difference]: With dead ends: 74544 [2021-01-06 19:44:21,413 INFO L226 Difference]: Without dead ends: 53278 [2021-01-06 19:44:21,437 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2021-01-06 19:44:21,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53278 states. [2021-01-06 19:44:23,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53278 to 34322. [2021-01-06 19:44:23,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34322 states. [2021-01-06 19:44:23,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34322 states to 34322 states and 44536 transitions. [2021-01-06 19:44:23,858 INFO L78 Accepts]: Start accepts. Automaton has 34322 states and 44536 transitions. Word has length 72 [2021-01-06 19:44:23,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:44:23,858 INFO L481 AbstractCegarLoop]: Abstraction has 34322 states and 44536 transitions. [2021-01-06 19:44:23,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-06 19:44:23,858 INFO L276 IsEmpty]: Start isEmpty. Operand 34322 states and 44536 transitions. [2021-01-06 19:44:23,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-01-06 19:44:23,863 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:44:23,863 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-01-06 19:44:24,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:44:24,069 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:44:24,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:44:24,070 INFO L82 PathProgramCache]: Analyzing trace with hash -54378842, now seen corresponding path program 1 times [2021-01-06 19:44:24,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:44:24,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844265503] [2021-01-06 19:44:24,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:44:24,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:44:24,145 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:44:24,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844265503] [2021-01-06 19:44:24,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153795139] [2021-01-06 19:44:24,148 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:44:24,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:44:24,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 6 conjunts are in the unsatisfiable core [2021-01-06 19:44:24,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:44:24,609 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:44:24,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:44:24,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-01-06 19:44:24,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13430081] [2021-01-06 19:44:24,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-06 19:44:24,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:44:24,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-06 19:44:24,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-01-06 19:44:24,612 INFO L87 Difference]: Start difference. First operand 34322 states and 44536 transitions. Second operand 11 states. [2021-01-06 19:44:28,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:44:28,308 INFO L93 Difference]: Finished difference Result 71759 states and 92813 transitions. [2021-01-06 19:44:28,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 19:44:28,309 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 73 [2021-01-06 19:44:28,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:44:28,381 INFO L225 Difference]: With dead ends: 71759 [2021-01-06 19:44:28,381 INFO L226 Difference]: Without dead ends: 49514 [2021-01-06 19:44:28,402 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2021-01-06 19:44:28,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49514 states. [2021-01-06 19:44:31,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49514 to 35380. [2021-01-06 19:44:31,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35380 states. [2021-01-06 19:44:31,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35380 states to 35380 states and 45499 transitions. [2021-01-06 19:44:31,251 INFO L78 Accepts]: Start accepts. Automaton has 35380 states and 45499 transitions. Word has length 73 [2021-01-06 19:44:31,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:44:31,251 INFO L481 AbstractCegarLoop]: Abstraction has 35380 states and 45499 transitions. [2021-01-06 19:44:31,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-06 19:44:31,252 INFO L276 IsEmpty]: Start isEmpty. Operand 35380 states and 45499 transitions. [2021-01-06 19:44:31,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-01-06 19:44:31,259 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:44:31,259 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:44:31,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:44:31,475 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:44:31,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:44:31,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1074011033, now seen corresponding path program 1 times [2021-01-06 19:44:31,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:44:31,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061658736] [2021-01-06 19:44:31,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:44:31,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:44:31,670 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:44:31,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061658736] [2021-01-06 19:44:31,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449781468] [2021-01-06 19:44:31,671 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:44:31,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:44:31,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 16 conjunts are in the unsatisfiable core [2021-01-06 19:44:31,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:44:31,901 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 19:44:32,163 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:44:32,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:44:32,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-01-06 19:44:32,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31407376] [2021-01-06 19:44:32,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-06 19:44:32,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:44:32,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-06 19:44:32,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2021-01-06 19:44:32,166 INFO L87 Difference]: Start difference. First operand 35380 states and 45499 transitions. Second operand 17 states. [2021-01-06 19:44:45,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:44:45,617 INFO L93 Difference]: Finished difference Result 172333 states and 220719 transitions. [2021-01-06 19:44:45,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-01-06 19:44:45,618 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 73 [2021-01-06 19:44:45,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:44:46,052 INFO L225 Difference]: With dead ends: 172333 [2021-01-06 19:44:46,052 INFO L226 Difference]: Without dead ends: 142477 [2021-01-06 19:44:46,095 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 533 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=615, Invalid=1737, Unknown=0, NotChecked=0, Total=2352 [2021-01-06 19:44:46,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142477 states. [2021-01-06 19:44:52,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142477 to 71320. [2021-01-06 19:44:52,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71320 states. [2021-01-06 19:44:52,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71320 states to 71320 states and 91792 transitions. [2021-01-06 19:44:52,668 INFO L78 Accepts]: Start accepts. Automaton has 71320 states and 91792 transitions. Word has length 73 [2021-01-06 19:44:52,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:44:52,669 INFO L481 AbstractCegarLoop]: Abstraction has 71320 states and 91792 transitions. [2021-01-06 19:44:52,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-01-06 19:44:52,669 INFO L276 IsEmpty]: Start isEmpty. Operand 71320 states and 91792 transitions. [2021-01-06 19:44:52,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-01-06 19:44:52,677 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:44:52,677 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:44:52,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-01-06 19:44:52,878 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:44:52,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:44:52,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1294313963, now seen corresponding path program 1 times [2021-01-06 19:44:52,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:44:52,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525230092] [2021-01-06 19:44:52,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:44:53,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:44:53,288 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:44:53,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525230092] [2021-01-06 19:44:53,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785172561] [2021-01-06 19:44:53,289 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:44:53,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:44:53,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 34 conjunts are in the unsatisfiable core [2021-01-06 19:44:53,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:44:53,784 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 19:44:54,055 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 36 [2021-01-06 19:44:54,545 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:44:54,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:44:54,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14] total 21 [2021-01-06 19:44:54,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231196284] [2021-01-06 19:44:54,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-06 19:44:54,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:44:54,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-06 19:44:54,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2021-01-06 19:44:54,548 INFO L87 Difference]: Start difference. First operand 71320 states and 91792 transitions. Second operand 22 states. [2021-01-06 19:44:55,456 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2021-01-06 19:44:55,736 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2021-01-06 19:44:55,975 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2021-01-06 19:44:56,252 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2021-01-06 19:44:56,825 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2021-01-06 19:44:57,332 WARN L197 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2021-01-06 19:44:57,743 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2021-01-06 19:44:58,004 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2021-01-06 19:44:58,476 WARN L197 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2021-01-06 19:44:58,651 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2021-01-06 19:44:58,795 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2021-01-06 19:44:58,936 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2021-01-06 19:44:59,440 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2021-01-06 19:45:00,107 WARN L197 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2021-01-06 19:45:00,391 WARN L197 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2021-01-06 19:45:00,895 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2021-01-06 19:45:01,053 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2021-01-06 19:45:01,373 WARN L197 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2021-01-06 19:45:01,809 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2021-01-06 19:45:02,359 WARN L197 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2021-01-06 19:45:02,648 WARN L197 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2021-01-06 19:45:02,810 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2021-01-06 19:45:02,955 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2021-01-06 19:45:03,457 WARN L197 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2021-01-06 19:45:03,649 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2021-01-06 19:45:04,012 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2021-01-06 19:45:04,179 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2021-01-06 19:45:05,991 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2021-01-06 19:45:06,131 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2021-01-06 19:45:06,613 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2021-01-06 19:45:31,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:45:31,276 INFO L93 Difference]: Finished difference Result 350603 states and 446485 transitions. [2021-01-06 19:45:31,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-01-06 19:45:31,277 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 73 [2021-01-06 19:45:31,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:45:31,906 INFO L225 Difference]: With dead ends: 350603 [2021-01-06 19:45:31,906 INFO L226 Difference]: Without dead ends: 286544 [2021-01-06 19:45:32,020 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3980 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=2172, Invalid=9170, Unknown=0, NotChecked=0, Total=11342 [2021-01-06 19:45:32,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286544 states. [2021-01-06 19:45:45,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286544 to 132295. [2021-01-06 19:45:45,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132295 states. [2021-01-06 19:45:46,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132295 states to 132295 states and 169286 transitions. [2021-01-06 19:45:46,044 INFO L78 Accepts]: Start accepts. Automaton has 132295 states and 169286 transitions. Word has length 73 [2021-01-06 19:45:46,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:45:46,044 INFO L481 AbstractCegarLoop]: Abstraction has 132295 states and 169286 transitions. [2021-01-06 19:45:46,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-01-06 19:45:46,044 INFO L276 IsEmpty]: Start isEmpty. Operand 132295 states and 169286 transitions. [2021-01-06 19:45:46,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-01-06 19:45:46,050 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:45:46,050 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] [2021-01-06 19:45:46,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:45:46,251 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:45:46,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:45:46,252 INFO L82 PathProgramCache]: Analyzing trace with hash -1403566823, now seen corresponding path program 1 times [2021-01-06 19:45:46,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:45:46,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937487568] [2021-01-06 19:45:46,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:45:46,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:45:46,291 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:45:46,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937487568] [2021-01-06 19:45:46,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:45:46,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:45:46,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250128920] [2021-01-06 19:45:46,292 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:45:46,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:45:46,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:45:46,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:45:46,293 INFO L87 Difference]: Start difference. First operand 132295 states and 169286 transitions. Second operand 3 states. [2021-01-06 19:45:53,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:45:53,678 INFO L93 Difference]: Finished difference Result 205156 states and 263296 transitions. [2021-01-06 19:45:53,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:45:53,679 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2021-01-06 19:45:53,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:45:53,798 INFO L225 Difference]: With dead ends: 205156 [2021-01-06 19:45:53,798 INFO L226 Difference]: Without dead ends: 72930 [2021-01-06 19:45:53,870 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:45:53,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72930 states. [2021-01-06 19:46:01,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72930 to 72895. [2021-01-06 19:46:01,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72895 states. [2021-01-06 19:46:01,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72895 states to 72895 states and 92392 transitions. [2021-01-06 19:46:01,133 INFO L78 Accepts]: Start accepts. Automaton has 72895 states and 92392 transitions. Word has length 73 [2021-01-06 19:46:01,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:46:01,134 INFO L481 AbstractCegarLoop]: Abstraction has 72895 states and 92392 transitions. [2021-01-06 19:46:01,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:46:01,134 INFO L276 IsEmpty]: Start isEmpty. Operand 72895 states and 92392 transitions. [2021-01-06 19:46:01,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-01-06 19:46:01,137 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:46:01,137 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:46:01,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-01-06 19:46:01,137 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:46:01,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:46:01,137 INFO L82 PathProgramCache]: Analyzing trace with hash -2138319465, now seen corresponding path program 1 times [2021-01-06 19:46:01,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:46:01,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454310694] [2021-01-06 19:46:01,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:46:01,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:46:01,219 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-01-06 19:46:01,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454310694] [2021-01-06 19:46:01,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:46:01,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 19:46:01,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498427183] [2021-01-06 19:46:01,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 19:46:01,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:46:01,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 19:46:01,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-01-06 19:46:01,221 INFO L87 Difference]: Start difference. First operand 72895 states and 92392 transitions. Second operand 7 states. [2021-01-06 19:46:12,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:46:12,364 INFO L93 Difference]: Finished difference Result 185021 states and 235464 transitions. [2021-01-06 19:46:12,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 19:46:12,365 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 73 [2021-01-06 19:46:12,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:46:12,552 INFO L225 Difference]: With dead ends: 185021 [2021-01-06 19:46:12,552 INFO L226 Difference]: Without dead ends: 113581 [2021-01-06 19:46:12,784 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-01-06 19:46:12,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113581 states. [2021-01-06 19:46:23,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113581 to 112435. [2021-01-06 19:46:23,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112435 states. [2021-01-06 19:46:23,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112435 states to 112435 states and 142528 transitions. [2021-01-06 19:46:23,669 INFO L78 Accepts]: Start accepts. Automaton has 112435 states and 142528 transitions. Word has length 73 [2021-01-06 19:46:23,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:46:23,669 INFO L481 AbstractCegarLoop]: Abstraction has 112435 states and 142528 transitions. [2021-01-06 19:46:23,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 19:46:23,670 INFO L276 IsEmpty]: Start isEmpty. Operand 112435 states and 142528 transitions. [2021-01-06 19:46:23,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-01-06 19:46:23,672 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:46:23,673 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:46:23,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-01-06 19:46:23,673 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:46:23,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:46:23,673 INFO L82 PathProgramCache]: Analyzing trace with hash 720922651, now seen corresponding path program 1 times [2021-01-06 19:46:23,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:46:23,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429393987] [2021-01-06 19:46:23,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:46:23,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:46:23,730 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-01-06 19:46:23,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429393987] [2021-01-06 19:46:23,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:46:23,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 19:46:23,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189147919] [2021-01-06 19:46:23,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 19:46:23,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:46:23,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 19:46:23,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 19:46:23,732 INFO L87 Difference]: Start difference. First operand 112435 states and 142528 transitions. Second operand 6 states. [2021-01-06 19:46:32,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:46:32,963 INFO L93 Difference]: Finished difference Result 198116 states and 251733 transitions. [2021-01-06 19:46:32,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 19:46:32,964 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 73 [2021-01-06 19:46:32,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:46:33,092 INFO L225 Difference]: With dead ends: 198116 [2021-01-06 19:46:33,093 INFO L226 Difference]: Without dead ends: 93707 [2021-01-06 19:46:33,145 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-01-06 19:46:33,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93707 states.