/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.ufo.BOUNDED-6.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 19:43:41,003 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 19:43:41,007 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 19:43:41,061 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 19:43:41,062 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 19:43:41,066 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 19:43:41,069 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 19:43:41,075 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 19:43:41,078 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 19:43:41,086 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 19:43:41,091 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 19:43:41,093 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 19:43:41,093 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 19:43:41,098 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 19:43:41,100 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 19:43:41,102 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 19:43:41,103 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 19:43:41,107 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 19:43:41,115 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 19:43:41,120 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 19:43:41,122 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 19:43:41,124 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 19:43:41,126 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 19:43:41,128 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 19:43:41,150 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 19:43:41,157 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 19:43:41,158 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 19:43:41,160 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 19:43:41,162 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 19:43:41,163 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 19:43:41,163 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 19:43:41,164 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 19:43:41,164 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 19:43:41,165 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 19:43:41,166 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 19:43:41,166 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 19:43:41,168 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 19:43:41,215 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 19:43:41,215 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 19:43:41,220 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 19:43:41,221 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 19:43:41,221 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 19:43:41,221 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 19:43:41,222 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 19:43:41,222 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 19:43:41,222 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 19:43:41,222 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 19:43:41,224 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 19:43:41,224 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 19:43:41,224 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 19:43:41,224 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 19:43:41,225 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 19:43:41,225 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 19:43:41,225 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 19:43:41,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 19:43:41,226 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 19:43:41,226 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 19:43:41,226 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 19:43:41,226 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 19:43:41,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 19:43:41,227 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 19:43:41,227 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 19:43:41,227 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 19:43:41,635 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 19:43:41,666 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 19:43:41,669 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 19:43:41,671 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 19:43:41,671 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 19:43:41,672 INFO L432 ainManager$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.ufo.BOUNDED-6.pals.c [2021-01-06 19:43:41,762 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/6c3001bc7/cd4a2ddcbe5b47ee96595f6800c41b62/FLAG4aa0ce529 [2021-01-06 19:43:42,419 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 19:43:42,420 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c [2021-01-06 19:43:42,438 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/6c3001bc7/cd4a2ddcbe5b47ee96595f6800c41b62/FLAG4aa0ce529 [2021-01-06 19:43:42,777 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/6c3001bc7/cd4a2ddcbe5b47ee96595f6800c41b62 [2021-01-06 19:43:42,781 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 19:43:42,784 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 19:43:42,786 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 19:43:42,786 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 19:43:42,791 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 19:43:42,792 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 07:43:42" (1/1) ... [2021-01-06 19:43:42,795 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e4ab298 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:43:42, skipping insertion in model container [2021-01-06 19:43:42,795 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 07:43:42" (1/1) ... [2021-01-06 19:43:42,804 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 19:43:42,862 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[~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[~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 19:43:43,098 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.ufo.BOUNDED-6.pals.c[6803,6816] [2021-01-06 19:43:43,101 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 19:43:43,112 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[~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[~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 19:43:43,167 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.ufo.BOUNDED-6.pals.c[6803,6816] [2021-01-06 19:43:43,168 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 19:43:43,188 INFO L208 MainTranslator]: Completed translation [2021-01-06 19:43:43,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:43:43 WrapperNode [2021-01-06 19:43:43,189 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 19:43:43,190 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 19:43:43,190 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 19:43:43,191 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 19:43:43,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:43:43" (1/1) ... [2021-01-06 19:43:43,210 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:43:43" (1/1) ... [2021-01-06 19:43:43,248 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 19:43:43,249 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 19:43:43,249 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 19:43:43,250 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 19:43:43,262 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:43:43" (1/1) ... [2021-01-06 19:43:43,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:43:43" (1/1) ... [2021-01-06 19:43:43,268 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:43:43" (1/1) ... [2021-01-06 19:43:43,273 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:43:43" (1/1) ... [2021-01-06 19:43:43,282 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:43:43" (1/1) ... [2021-01-06 19:43:43,290 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:43:43" (1/1) ... [2021-01-06 19:43:43,293 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:43:43" (1/1) ... [2021-01-06 19:43:43,302 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 19:43:43,303 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 19:43:43,303 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 19:43:43,303 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 19:43:43,310 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:43:43" (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 19:43:43,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 19:43:43,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 19:43:43,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 19:43:43,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 19:43:44,384 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 19:43:44,385 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-01-06 19:43:44,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 07:43:44 BoogieIcfgContainer [2021-01-06 19:43:44,387 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 19:43:44,389 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 19:43:44,389 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 19:43:44,396 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 19:43:44,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 07:43:42" (1/3) ... [2021-01-06 19:43:44,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62671119 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 07:43:44, skipping insertion in model container [2021-01-06 19:43:44,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:43:43" (2/3) ... [2021-01-06 19:43:44,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62671119 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 07:43:44, skipping insertion in model container [2021-01-06 19:43:44,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 07:43:44" (3/3) ... [2021-01-06 19:43:44,400 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c [2021-01-06 19:43:44,406 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 19:43:44,412 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 19:43:44,431 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 19:43:44,459 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 19:43:44,459 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 19:43:44,460 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 19:43:44,460 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 19:43:44,460 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 19:43:44,460 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 19:43:44,460 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 19:43:44,460 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 19:43:44,477 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states. [2021-01-06 19:43:44,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-01-06 19:43:44,485 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:43:44,486 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 19:43:44,486 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:43:44,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:43:44,493 INFO L82 PathProgramCache]: Analyzing trace with hash 233700331, now seen corresponding path program 1 times [2021-01-06 19:43:44,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:43:44,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733897453] [2021-01-06 19:43:44,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:43:44,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:44,868 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 19:43:44,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733897453] [2021-01-06 19:43:44,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:43:44,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 19:43:44,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214010222] [2021-01-06 19:43:44,876 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 19:43:44,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:43:44,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 19:43:44,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 19:43:44,901 INFO L87 Difference]: Start difference. First operand 79 states. Second operand 5 states. [2021-01-06 19:43:45,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:43:45,095 INFO L93 Difference]: Finished difference Result 191 states and 307 transitions. [2021-01-06 19:43:45,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 19:43:45,097 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2021-01-06 19:43:45,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:43:45,108 INFO L225 Difference]: With dead ends: 191 [2021-01-06 19:43:45,109 INFO L226 Difference]: Without dead ends: 127 [2021-01-06 19:43:45,112 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 19:43:45,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-01-06 19:43:45,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 75. [2021-01-06 19:43:45,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2021-01-06 19:43:45,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 105 transitions. [2021-01-06 19:43:45,159 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 105 transitions. Word has length 25 [2021-01-06 19:43:45,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:43:45,160 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 105 transitions. [2021-01-06 19:43:45,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 19:43:45,160 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 105 transitions. [2021-01-06 19:43:45,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-01-06 19:43:45,162 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:43:45,162 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 19:43:45,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 19:43:45,163 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:43:45,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:43:45,164 INFO L82 PathProgramCache]: Analyzing trace with hash 182027041, now seen corresponding path program 1 times [2021-01-06 19:43:45,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:43:45,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560075653] [2021-01-06 19:43:45,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:43:45,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:45,293 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 19:43:45,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560075653] [2021-01-06 19:43:45,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:43:45,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:43:45,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067816187] [2021-01-06 19:43:45,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:43:45,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:43:45,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:43:45,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:43:45,298 INFO L87 Difference]: Start difference. First operand 75 states and 105 transitions. Second operand 3 states. [2021-01-06 19:43:45,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:43:45,327 INFO L93 Difference]: Finished difference Result 167 states and 249 transitions. [2021-01-06 19:43:45,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:43:45,328 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2021-01-06 19:43:45,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:43:45,330 INFO L225 Difference]: With dead ends: 167 [2021-01-06 19:43:45,331 INFO L226 Difference]: Without dead ends: 115 [2021-01-06 19:43:45,332 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 19:43:45,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-01-06 19:43:45,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 113. [2021-01-06 19:43:45,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2021-01-06 19:43:45,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 165 transitions. [2021-01-06 19:43:45,346 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 165 transitions. Word has length 41 [2021-01-06 19:43:45,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:43:45,347 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 165 transitions. [2021-01-06 19:43:45,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:43:45,347 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 165 transitions. [2021-01-06 19:43:45,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-01-06 19:43:45,349 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:43:45,349 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 19:43:45,349 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 19:43:45,350 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:43:45,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:43:45,351 INFO L82 PathProgramCache]: Analyzing trace with hash 54990345, now seen corresponding path program 1 times [2021-01-06 19:43:45,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:43:45,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24198878] [2021-01-06 19:43:45,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:43:45,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:45,526 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 19:43:45,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24198878] [2021-01-06 19:43:45,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:43:45,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:43:45,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006417136] [2021-01-06 19:43:45,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:43:45,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:43:45,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:43:45,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:43:45,529 INFO L87 Difference]: Start difference. First operand 113 states and 165 transitions. Second operand 3 states. [2021-01-06 19:43:45,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:43:45,559 INFO L93 Difference]: Finished difference Result 269 states and 409 transitions. [2021-01-06 19:43:45,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:43:45,560 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2021-01-06 19:43:45,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:43:45,562 INFO L225 Difference]: With dead ends: 269 [2021-01-06 19:43:45,562 INFO L226 Difference]: Without dead ends: 179 [2021-01-06 19:43:45,563 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 19:43:45,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-01-06 19:43:45,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 177. [2021-01-06 19:43:45,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2021-01-06 19:43:45,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 264 transitions. [2021-01-06 19:43:45,587 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 264 transitions. Word has length 42 [2021-01-06 19:43:45,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:43:45,587 INFO L481 AbstractCegarLoop]: Abstraction has 177 states and 264 transitions. [2021-01-06 19:43:45,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:43:45,588 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 264 transitions. [2021-01-06 19:43:45,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-01-06 19:43:45,589 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:43:45,590 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 19:43:45,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 19:43:45,590 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:43:45,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:43:45,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1508061361, now seen corresponding path program 1 times [2021-01-06 19:43:45,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:43:45,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351697881] [2021-01-06 19:43:45,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:43:45,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:45,763 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 19:43:45,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351697881] [2021-01-06 19:43:45,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:43:45,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:43:45,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032020635] [2021-01-06 19:43:45,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:43:45,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:43:45,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:43:45,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:43:45,767 INFO L87 Difference]: Start difference. First operand 177 states and 264 transitions. Second operand 3 states. [2021-01-06 19:43:45,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:43:45,826 INFO L93 Difference]: Finished difference Result 437 states and 666 transitions. [2021-01-06 19:43:45,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:43:45,827 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2021-01-06 19:43:45,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:43:45,830 INFO L225 Difference]: With dead ends: 437 [2021-01-06 19:43:45,831 INFO L226 Difference]: Without dead ends: 283 [2021-01-06 19:43:45,832 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 19:43:45,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2021-01-06 19:43:45,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 281. [2021-01-06 19:43:45,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2021-01-06 19:43:45,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 420 transitions. [2021-01-06 19:43:45,864 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 420 transitions. Word has length 43 [2021-01-06 19:43:45,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:43:45,865 INFO L481 AbstractCegarLoop]: Abstraction has 281 states and 420 transitions. [2021-01-06 19:43:45,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:43:45,865 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 420 transitions. [2021-01-06 19:43:45,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-01-06 19:43:45,867 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:43:45,867 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 19:43:45,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 19:43:45,867 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:43:45,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:43:45,868 INFO L82 PathProgramCache]: Analyzing trace with hash -922713191, now seen corresponding path program 1 times [2021-01-06 19:43:45,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:43:45,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707681706] [2021-01-06 19:43:45,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:43:45,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:46,016 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 19:43:46,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707681706] [2021-01-06 19:43:46,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:43:46,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 19:43:46,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632271912] [2021-01-06 19:43:46,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 19:43:46,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:43:46,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 19:43:46,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-01-06 19:43:46,020 INFO L87 Difference]: Start difference. First operand 281 states and 420 transitions. Second operand 5 states. [2021-01-06 19:43:46,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:43:46,143 INFO L93 Difference]: Finished difference Result 971 states and 1467 transitions. [2021-01-06 19:43:46,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 19:43:46,144 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2021-01-06 19:43:46,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:43:46,149 INFO L225 Difference]: With dead ends: 971 [2021-01-06 19:43:46,149 INFO L226 Difference]: Without dead ends: 713 [2021-01-06 19:43:46,154 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 19:43:46,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2021-01-06 19:43:46,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 709. [2021-01-06 19:43:46,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 709 states. [2021-01-06 19:43:46,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 1060 transitions. [2021-01-06 19:43:46,257 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 1060 transitions. Word has length 44 [2021-01-06 19:43:46,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:43:46,260 INFO L481 AbstractCegarLoop]: Abstraction has 709 states and 1060 transitions. [2021-01-06 19:43:46,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 19:43:46,260 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 1060 transitions. [2021-01-06 19:43:46,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-01-06 19:43:46,265 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:43:46,265 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 19:43:46,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-06 19:43:46,270 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:43:46,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:43:46,271 INFO L82 PathProgramCache]: Analyzing trace with hash 2131571990, now seen corresponding path program 1 times [2021-01-06 19:43:46,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:43:46,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133260831] [2021-01-06 19:43:46,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:43:46,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:46,421 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 19:43:46,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133260831] [2021-01-06 19:43:46,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:43:46,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 19:43:46,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716237504] [2021-01-06 19:43:46,424 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 19:43:46,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:43:46,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 19:43:46,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-01-06 19:43:46,426 INFO L87 Difference]: Start difference. First operand 709 states and 1060 transitions. Second operand 5 states. [2021-01-06 19:43:46,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:43:46,596 INFO L93 Difference]: Finished difference Result 2801 states and 4220 transitions. [2021-01-06 19:43:46,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 19:43:46,597 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2021-01-06 19:43:46,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:43:46,610 INFO L225 Difference]: With dead ends: 2801 [2021-01-06 19:43:46,610 INFO L226 Difference]: Without dead ends: 2115 [2021-01-06 19:43:46,613 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 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 19:43:46,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2115 states. [2021-01-06 19:43:46,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2115 to 1393. [2021-01-06 19:43:46,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1393 states. [2021-01-06 19:43:46,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1393 states to 1393 states and 2048 transitions. [2021-01-06 19:43:46,714 INFO L78 Accepts]: Start accepts. Automaton has 1393 states and 2048 transitions. Word has length 45 [2021-01-06 19:43:46,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:43:46,715 INFO L481 AbstractCegarLoop]: Abstraction has 1393 states and 2048 transitions. [2021-01-06 19:43:46,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 19:43:46,715 INFO L276 IsEmpty]: Start isEmpty. Operand 1393 states and 2048 transitions. [2021-01-06 19:43:46,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-01-06 19:43:46,716 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:43:46,716 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 19:43:46,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-06 19:43:46,717 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:43:46,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:43:46,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1270898830, now seen corresponding path program 1 times [2021-01-06 19:43:46,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:43:46,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284852409] [2021-01-06 19:43:46,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:43:46,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:46,802 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 19:43:46,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284852409] [2021-01-06 19:43:46,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:43:46,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 19:43:46,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331368601] [2021-01-06 19:43:46,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 19:43:46,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:43:46,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 19:43:46,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 19:43:46,805 INFO L87 Difference]: Start difference. First operand 1393 states and 2048 transitions. Second operand 5 states. [2021-01-06 19:43:46,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:43:46,992 INFO L93 Difference]: Finished difference Result 2955 states and 4265 transitions. [2021-01-06 19:43:46,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 19:43:46,992 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2021-01-06 19:43:46,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:43:47,009 INFO L225 Difference]: With dead ends: 2955 [2021-01-06 19:43:47,009 INFO L226 Difference]: Without dead ends: 2953 [2021-01-06 19:43:47,011 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-01-06 19:43:47,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2953 states. [2021-01-06 19:43:47,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2953 to 1537. [2021-01-06 19:43:47,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1537 states. [2021-01-06 19:43:47,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1537 states to 1537 states and 2192 transitions. [2021-01-06 19:43:47,159 INFO L78 Accepts]: Start accepts. Automaton has 1537 states and 2192 transitions. Word has length 46 [2021-01-06 19:43:47,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:43:47,159 INFO L481 AbstractCegarLoop]: Abstraction has 1537 states and 2192 transitions. [2021-01-06 19:43:47,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 19:43:47,160 INFO L276 IsEmpty]: Start isEmpty. Operand 1537 states and 2192 transitions. [2021-01-06 19:43:47,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-01-06 19:43:47,160 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:43:47,160 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 19:43:47,161 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-06 19:43:47,161 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:43:47,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:43:47,161 INFO L82 PathProgramCache]: Analyzing trace with hash 795736558, now seen corresponding path program 1 times [2021-01-06 19:43:47,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:43:47,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417997308] [2021-01-06 19:43:47,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:43:47,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:47,253 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 19:43:47,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417997308] [2021-01-06 19:43:47,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:43:47,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:43:47,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993584137] [2021-01-06 19:43:47,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:43:47,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:43:47,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:43:47,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:43:47,257 INFO L87 Difference]: Start difference. First operand 1537 states and 2192 transitions. Second operand 3 states. [2021-01-06 19:43:47,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:43:47,391 INFO L93 Difference]: Finished difference Result 3651 states and 5220 transitions. [2021-01-06 19:43:47,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:43:47,391 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2021-01-06 19:43:47,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:43:47,404 INFO L225 Difference]: With dead ends: 3651 [2021-01-06 19:43:47,404 INFO L226 Difference]: Without dead ends: 2137 [2021-01-06 19:43:47,407 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 19:43:47,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2137 states. [2021-01-06 19:43:47,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2137 to 2135. [2021-01-06 19:43:47,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2135 states. [2021-01-06 19:43:47,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2135 states to 2135 states and 3030 transitions. [2021-01-06 19:43:47,542 INFO L78 Accepts]: Start accepts. Automaton has 2135 states and 3030 transitions. Word has length 47 [2021-01-06 19:43:47,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:43:47,544 INFO L481 AbstractCegarLoop]: Abstraction has 2135 states and 3030 transitions. [2021-01-06 19:43:47,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:43:47,544 INFO L276 IsEmpty]: Start isEmpty. Operand 2135 states and 3030 transitions. [2021-01-06 19:43:47,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-01-06 19:43:47,547 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:43:47,548 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 19:43:47,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-06 19:43:47,548 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:43:47,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:43:47,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1282796535, now seen corresponding path program 1 times [2021-01-06 19:43:47,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:43:47,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224074259] [2021-01-06 19:43:47,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:43:47,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:47,783 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 19:43:47,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224074259] [2021-01-06 19:43:47,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243968739] [2021-01-06 19:43:47,785 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 19:43:47,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:47,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 11 conjunts are in the unsatisfiable core [2021-01-06 19:43:47,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:43:48,172 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 19:43:48,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:43:48,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 14 [2021-01-06 19:43:48,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799306396] [2021-01-06 19:43:48,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-06 19:43:48,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:43:48,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-06 19:43:48,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-01-06 19:43:48,175 INFO L87 Difference]: Start difference. First operand 2135 states and 3030 transitions. Second operand 14 states. [2021-01-06 19:43:53,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:43:53,312 INFO L93 Difference]: Finished difference Result 16364 states and 23062 transitions. [2021-01-06 19:43:53,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-01-06 19:43:53,313 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 66 [2021-01-06 19:43:53,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:43:53,382 INFO L225 Difference]: With dead ends: 16364 [2021-01-06 19:43:53,382 INFO L226 Difference]: Without dead ends: 14354 [2021-01-06 19:43:53,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2714 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1482, Invalid=5828, Unknown=0, NotChecked=0, Total=7310 [2021-01-06 19:43:53,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14354 states. [2021-01-06 19:43:54,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14354 to 8129. [2021-01-06 19:43:54,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8129 states. [2021-01-06 19:43:54,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8129 states to 8129 states and 11436 transitions. [2021-01-06 19:43:54,119 INFO L78 Accepts]: Start accepts. Automaton has 8129 states and 11436 transitions. Word has length 66 [2021-01-06 19:43:54,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:43:54,120 INFO L481 AbstractCegarLoop]: Abstraction has 8129 states and 11436 transitions. [2021-01-06 19:43:54,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-01-06 19:43:54,120 INFO L276 IsEmpty]: Start isEmpty. Operand 8129 states and 11436 transitions. [2021-01-06 19:43:54,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-01-06 19:43:54,123 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:43:54,123 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 19:43:54,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-01-06 19:43:54,337 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:43:54,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:43:54,338 INFO L82 PathProgramCache]: Analyzing trace with hash 129974557, now seen corresponding path program 1 times [2021-01-06 19:43:54,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:43:54,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598112410] [2021-01-06 19:43:54,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:43:54,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:54,392 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 19:43:54,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598112410] [2021-01-06 19:43:54,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:43:54,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:43:54,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410366901] [2021-01-06 19:43:54,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:43:54,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:43:54,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:43:54,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:43:54,395 INFO L87 Difference]: Start difference. First operand 8129 states and 11436 transitions. Second operand 3 states. [2021-01-06 19:43:54,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:43:54,881 INFO L93 Difference]: Finished difference Result 12669 states and 17784 transitions. [2021-01-06 19:43:54,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:43:54,882 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2021-01-06 19:43:54,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:43:54,915 INFO L225 Difference]: With dead ends: 12669 [2021-01-06 19:43:54,915 INFO L226 Difference]: Without dead ends: 8439 [2021-01-06 19:43:54,923 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 19:43:54,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8439 states. [2021-01-06 19:43:55,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8439 to 8199. [2021-01-06 19:43:55,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8199 states. [2021-01-06 19:43:55,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8199 states to 8199 states and 11291 transitions. [2021-01-06 19:43:55,423 INFO L78 Accepts]: Start accepts. Automaton has 8199 states and 11291 transitions. Word has length 67 [2021-01-06 19:43:55,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:43:55,423 INFO L481 AbstractCegarLoop]: Abstraction has 8199 states and 11291 transitions. [2021-01-06 19:43:55,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:43:55,423 INFO L276 IsEmpty]: Start isEmpty. Operand 8199 states and 11291 transitions. [2021-01-06 19:43:55,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-01-06 19:43:55,426 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:43:55,427 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 19:43:55,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-01-06 19:43:55,427 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:43:55,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:43:55,428 INFO L82 PathProgramCache]: Analyzing trace with hash 788719803, now seen corresponding path program 1 times [2021-01-06 19:43:55,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:43:55,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557300108] [2021-01-06 19:43:55,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:43:55,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:55,477 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 19:43:55,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557300108] [2021-01-06 19:43:55,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:43:55,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:43:55,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891645830] [2021-01-06 19:43:55,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:43:55,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:43:55,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:43:55,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:43:55,480 INFO L87 Difference]: Start difference. First operand 8199 states and 11291 transitions. Second operand 3 states. [2021-01-06 19:43:56,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:43:56,137 INFO L93 Difference]: Finished difference Result 19858 states and 27237 transitions. [2021-01-06 19:43:56,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:43:56,138 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2021-01-06 19:43:56,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:43:56,171 INFO L225 Difference]: With dead ends: 19858 [2021-01-06 19:43:56,172 INFO L226 Difference]: Without dead ends: 13692 [2021-01-06 19:43:56,185 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 19:43:56,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13692 states. [2021-01-06 19:43:56,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13692 to 13652. [2021-01-06 19:43:56,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13652 states. [2021-01-06 19:43:56,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13652 states to 13652 states and 18469 transitions. [2021-01-06 19:43:56,981 INFO L78 Accepts]: Start accepts. Automaton has 13652 states and 18469 transitions. Word has length 67 [2021-01-06 19:43:56,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:43:56,982 INFO L481 AbstractCegarLoop]: Abstraction has 13652 states and 18469 transitions. [2021-01-06 19:43:56,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:43:56,982 INFO L276 IsEmpty]: Start isEmpty. Operand 13652 states and 18469 transitions. [2021-01-06 19:43:56,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-01-06 19:43:56,986 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:43:56,987 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 19:43:56,987 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-01-06 19:43:56,987 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:43:56,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:43:56,988 INFO L82 PathProgramCache]: Analyzing trace with hash -691738293, now seen corresponding path program 1 times [2021-01-06 19:43:56,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:43:56,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958632161] [2021-01-06 19:43:56,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:43:57,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:57,064 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 19:43:57,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958632161] [2021-01-06 19:43:57,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:43:57,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 19:43:57,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238541062] [2021-01-06 19:43:57,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 19:43:57,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:43:57,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 19:43:57,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 19:43:57,067 INFO L87 Difference]: Start difference. First operand 13652 states and 18469 transitions. Second operand 6 states. [2021-01-06 19:43:58,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:43:58,269 INFO L93 Difference]: Finished difference Result 34017 states and 45971 transitions. [2021-01-06 19:43:58,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 19:43:58,270 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2021-01-06 19:43:58,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:43:58,311 INFO L225 Difference]: With dead ends: 34017 [2021-01-06 19:43:58,311 INFO L226 Difference]: Without dead ends: 20418 [2021-01-06 19:43:58,328 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 19:43:58,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20418 states. [2021-01-06 19:43:59,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20418 to 18657. [2021-01-06 19:43:59,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18657 states. [2021-01-06 19:43:59,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18657 states to 18657 states and 24991 transitions. [2021-01-06 19:43:59,375 INFO L78 Accepts]: Start accepts. Automaton has 18657 states and 24991 transitions. Word has length 67 [2021-01-06 19:43:59,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:43:59,376 INFO L481 AbstractCegarLoop]: Abstraction has 18657 states and 24991 transitions. [2021-01-06 19:43:59,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 19:43:59,376 INFO L276 IsEmpty]: Start isEmpty. Operand 18657 states and 24991 transitions. [2021-01-06 19:43:59,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-01-06 19:43:59,381 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:43:59,381 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 19:43:59,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-01-06 19:43:59,381 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:43:59,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:43:59,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1134894771, now seen corresponding path program 1 times [2021-01-06 19:43:59,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:43:59,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867998352] [2021-01-06 19:43:59,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:43:59,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:59,427 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 19:43:59,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867998352] [2021-01-06 19:43:59,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:43:59,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:43:59,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006430278] [2021-01-06 19:43:59,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:43:59,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:43:59,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:43:59,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:43:59,430 INFO L87 Difference]: Start difference. First operand 18657 states and 24991 transitions. Second operand 3 states. [2021-01-06 19:44:00,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:44:00,278 INFO L93 Difference]: Finished difference Result 36798 states and 49081 transitions. [2021-01-06 19:44:00,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:44:00,279 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2021-01-06 19:44:00,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:44:00,314 INFO L225 Difference]: With dead ends: 36798 [2021-01-06 19:44:00,315 INFO L226 Difference]: Without dead ends: 20558 [2021-01-06 19:44:00,334 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 19:44:00,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20558 states. [2021-01-06 19:44:01,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20558 to 16817. [2021-01-06 19:44:01,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16817 states. [2021-01-06 19:44:01,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16817 states to 16817 states and 22125 transitions. [2021-01-06 19:44:01,272 INFO L78 Accepts]: Start accepts. Automaton has 16817 states and 22125 transitions. Word has length 67 [2021-01-06 19:44:01,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:44:01,272 INFO L481 AbstractCegarLoop]: Abstraction has 16817 states and 22125 transitions. [2021-01-06 19:44:01,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:44:01,272 INFO L276 IsEmpty]: Start isEmpty. Operand 16817 states and 22125 transitions. [2021-01-06 19:44:01,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-01-06 19:44:01,277 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:44:01,277 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 19:44:01,277 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-01-06 19:44:01,277 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:44:01,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:44:01,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1562240835, now seen corresponding path program 1 times [2021-01-06 19:44:01,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:44:01,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10515064] [2021-01-06 19:44:01,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:44:01,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:44:01,357 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-01-06 19:44:01,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10515064] [2021-01-06 19:44:01,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:44:01,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 19:44:01,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929581824] [2021-01-06 19:44:01,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 19:44:01,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:44:01,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 19:44:01,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-01-06 19:44:01,359 INFO L87 Difference]: Start difference. First operand 16817 states and 22125 transitions. Second operand 5 states. [2021-01-06 19:44:02,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:44:02,821 INFO L93 Difference]: Finished difference Result 31498 states and 41930 transitions. [2021-01-06 19:44:02,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 19:44:02,822 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2021-01-06 19:44:02,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:44:02,859 INFO L225 Difference]: With dead ends: 31498 [2021-01-06 19:44:02,859 INFO L226 Difference]: Without dead ends: 26584 [2021-01-06 19:44:02,872 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 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 19:44:02,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26584 states. [2021-01-06 19:44:04,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26584 to 21441. [2021-01-06 19:44:04,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21441 states. [2021-01-06 19:44:04,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21441 states to 21441 states and 28219 transitions. [2021-01-06 19:44:04,108 INFO L78 Accepts]: Start accepts. Automaton has 21441 states and 28219 transitions. Word has length 67 [2021-01-06 19:44:04,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:44:04,108 INFO L481 AbstractCegarLoop]: Abstraction has 21441 states and 28219 transitions. [2021-01-06 19:44:04,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 19:44:04,108 INFO L276 IsEmpty]: Start isEmpty. Operand 21441 states and 28219 transitions. [2021-01-06 19:44:04,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-01-06 19:44:04,113 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:44:04,113 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 19:44:04,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-01-06 19:44:04,113 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:44:04,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:44:04,114 INFO L82 PathProgramCache]: Analyzing trace with hash -2062316443, now seen corresponding path program 1 times [2021-01-06 19:44:04,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:44:04,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144071287] [2021-01-06 19:44:04,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:44:04,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:44:04,179 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 19:44:04,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144071287] [2021-01-06 19:44:04,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:44:04,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 19:44:04,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319851752] [2021-01-06 19:44:04,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 19:44:04,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:44:04,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 19:44:04,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 19:44:04,181 INFO L87 Difference]: Start difference. First operand 21441 states and 28219 transitions. Second operand 6 states. [2021-01-06 19:44:05,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:44:05,750 INFO L93 Difference]: Finished difference Result 53662 states and 70442 transitions. [2021-01-06 19:44:05,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 19:44:05,751 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2021-01-06 19:44:05,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:44:05,799 INFO L225 Difference]: With dead ends: 53662 [2021-01-06 19:44:05,799 INFO L226 Difference]: Without dead ends: 32250 [2021-01-06 19:44:05,834 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 19:44:05,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32250 states. [2021-01-06 19:44:07,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32250 to 28821. [2021-01-06 19:44:07,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28821 states. [2021-01-06 19:44:07,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28821 states to 28821 states and 37367 transitions. [2021-01-06 19:44:07,464 INFO L78 Accepts]: Start accepts. Automaton has 28821 states and 37367 transitions. Word has length 67 [2021-01-06 19:44:07,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:44:07,464 INFO L481 AbstractCegarLoop]: Abstraction has 28821 states and 37367 transitions. [2021-01-06 19:44:07,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 19:44:07,464 INFO L276 IsEmpty]: Start isEmpty. Operand 28821 states and 37367 transitions. [2021-01-06 19:44:07,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-01-06 19:44:07,470 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:44:07,470 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 19:44:07,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-01-06 19:44:07,471 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:44:07,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:44:07,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1809004131, now seen corresponding path program 1 times [2021-01-06 19:44:07,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:44:07,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145847007] [2021-01-06 19:44:07,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:44:07,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:44:07,555 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 19:44:07,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145847007] [2021-01-06 19:44:07,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:44:07,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 19:44:07,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338552784] [2021-01-06 19:44:07,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 19:44:07,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:44:07,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 19:44:07,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-01-06 19:44:07,557 INFO L87 Difference]: Start difference. First operand 28821 states and 37367 transitions. Second operand 5 states. [2021-01-06 19:44:09,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:44:09,992 INFO L93 Difference]: Finished difference Result 49071 states and 64364 transitions. [2021-01-06 19:44:09,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 19:44:09,993 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2021-01-06 19:44:09,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:44:10,044 INFO L225 Difference]: With dead ends: 49071 [2021-01-06 19:44:10,044 INFO L226 Difference]: Without dead ends: 41940 [2021-01-06 19:44:10,057 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 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 19:44:10,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41940 states. [2021-01-06 19:44:11,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41940 to 34960. [2021-01-06 19:44:11,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34960 states. [2021-01-06 19:44:11,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34960 states to 34960 states and 45312 transitions. [2021-01-06 19:44:11,976 INFO L78 Accepts]: Start accepts. Automaton has 34960 states and 45312 transitions. Word has length 67 [2021-01-06 19:44:11,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:44:11,977 INFO L481 AbstractCegarLoop]: Abstraction has 34960 states and 45312 transitions. [2021-01-06 19:44:11,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 19:44:11,977 INFO L276 IsEmpty]: Start isEmpty. Operand 34960 states and 45312 transitions. [2021-01-06 19:44:11,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-01-06 19:44:11,982 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:44:11,982 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 19:44:11,982 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-01-06 19:44:11,982 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:44:11,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:44:11,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1321378519, now seen corresponding path program 1 times [2021-01-06 19:44:11,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:44:11,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182376619] [2021-01-06 19:44:11,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:44:12,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:44:12,059 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-06 19:44:12,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182376619] [2021-01-06 19:44:12,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:44:12,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 19:44:12,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880914318] [2021-01-06 19:44:12,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 19:44:12,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:44:12,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 19:44:12,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-01-06 19:44:12,062 INFO L87 Difference]: Start difference. First operand 34960 states and 45312 transitions. Second operand 5 states. [2021-01-06 19:44:14,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:44:14,724 INFO L93 Difference]: Finished difference Result 58172 states and 76145 transitions. [2021-01-06 19:44:14,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 19:44:14,725 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2021-01-06 19:44:14,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:44:14,777 INFO L225 Difference]: With dead ends: 58172 [2021-01-06 19:44:14,777 INFO L226 Difference]: Without dead ends: 47922 [2021-01-06 19:44:14,793 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 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 19:44:14,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47922 states. [2021-01-06 19:44:16,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47922 to 42190. [2021-01-06 19:44:16,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42190 states. [2021-01-06 19:44:16,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42190 states to 42190 states and 54603 transitions. [2021-01-06 19:44:16,938 INFO L78 Accepts]: Start accepts. Automaton has 42190 states and 54603 transitions. Word has length 68 [2021-01-06 19:44:16,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:44:16,938 INFO L481 AbstractCegarLoop]: Abstraction has 42190 states and 54603 transitions. [2021-01-06 19:44:16,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 19:44:16,938 INFO L276 IsEmpty]: Start isEmpty. Operand 42190 states and 54603 transitions. [2021-01-06 19:44:16,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-01-06 19:44:16,944 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:44:16,944 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] [2021-01-06 19:44:16,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-01-06 19:44:16,944 INFO L429 AbstractCegarLoop]: === Iteration 18 === [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 -624325544, now seen corresponding path program 1 times [2021-01-06 19:44:16,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:44:16,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384413959] [2021-01-06 19:44:16,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:44:16,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:44:17,018 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 19:44:17,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384413959] [2021-01-06 19:44:17,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640989160] [2021-01-06 19:44:17,020 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 19:44:17,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:44:17,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 6 conjunts are in the unsatisfiable core [2021-01-06 19:44:17,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:44:17,333 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 19:44:17,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:44:17,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-01-06 19:44:17,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812477345] [2021-01-06 19:44:17,335 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-06 19:44:17,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:44:17,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-06 19:44:17,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-01-06 19:44:17,336 INFO L87 Difference]: Start difference. First operand 42190 states and 54603 transitions. Second operand 11 states. [2021-01-06 19:44:22,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:44:22,649 INFO L93 Difference]: Finished difference Result 115537 states and 149253 transitions. [2021-01-06 19:44:22,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 19:44:22,653 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 71 [2021-01-06 19:44:22,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:44:22,787 INFO L225 Difference]: With dead ends: 115537 [2021-01-06 19:44:22,787 INFO L226 Difference]: Without dead ends: 87447 [2021-01-06 19:44:22,822 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 67 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 19:44:22,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87447 states. [2021-01-06 19:44:26,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87447 to 48660. [2021-01-06 19:44:26,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48660 states. [2021-01-06 19:44:26,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48660 states to 48660 states and 63089 transitions. [2021-01-06 19:44:26,140 INFO L78 Accepts]: Start accepts. Automaton has 48660 states and 63089 transitions. Word has length 71 [2021-01-06 19:44:26,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:44:26,140 INFO L481 AbstractCegarLoop]: Abstraction has 48660 states and 63089 transitions. [2021-01-06 19:44:26,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-06 19:44:26,140 INFO L276 IsEmpty]: Start isEmpty. Operand 48660 states and 63089 transitions. [2021-01-06 19:44:26,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-01-06 19:44:26,145 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:44:26,145 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] [2021-01-06 19:44:26,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-01-06 19:44:26,359 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:44:26,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:44:26,360 INFO L82 PathProgramCache]: Analyzing trace with hash -85511602, now seen corresponding path program 1 times [2021-01-06 19:44:26,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:44:26,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766494103] [2021-01-06 19:44:26,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:44:26,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:44:26,438 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 19:44:26,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766494103] [2021-01-06 19:44:26,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268330816] [2021-01-06 19:44:26,439 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 19:44:26,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:44:26,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 6 conjunts are in the unsatisfiable core [2021-01-06 19:44:26,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:44:26,720 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 19:44:26,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:44:26,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-01-06 19:44:26,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595203293] [2021-01-06 19:44:26,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-06 19:44:26,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:44:26,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-06 19:44:26,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-01-06 19:44:26,722 INFO L87 Difference]: Start difference. First operand 48660 states and 63089 transitions. Second operand 11 states. [2021-01-06 19:44:32,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:44:32,305 INFO L93 Difference]: Finished difference Result 117761 states and 152251 transitions. [2021-01-06 19:44:32,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 19:44:32,306 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 71 [2021-01-06 19:44:32,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:44:32,399 INFO L225 Difference]: With dead ends: 117761 [2021-01-06 19:44:32,399 INFO L226 Difference]: Without dead ends: 84814 [2021-01-06 19:44:32,429 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 67 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 19:44:32,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84814 states. [2021-01-06 19:44:35,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84814 to 53957. [2021-01-06 19:44:35,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53957 states. [2021-01-06 19:44:36,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53957 states to 53957 states and 69862 transitions. [2021-01-06 19:44:36,173 INFO L78 Accepts]: Start accepts. Automaton has 53957 states and 69862 transitions. Word has length 71 [2021-01-06 19:44:36,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:44:36,173 INFO L481 AbstractCegarLoop]: Abstraction has 53957 states and 69862 transitions. [2021-01-06 19:44:36,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-06 19:44:36,173 INFO L276 IsEmpty]: Start isEmpty. Operand 53957 states and 69862 transitions. [2021-01-06 19:44:36,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-01-06 19:44:36,178 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:44:36,178 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 19:44:36,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:44:36,385 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:44:36,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:44:36,386 INFO L82 PathProgramCache]: Analyzing trace with hash 619033760, now seen corresponding path program 1 times [2021-01-06 19:44:36,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:44:36,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545948850] [2021-01-06 19:44:36,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:44:36,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:44:36,494 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 19:44:36,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545948850] [2021-01-06 19:44:36,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653904282] [2021-01-06 19:44:36,497 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 19:44:36,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:44:36,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 6 conjunts are in the unsatisfiable core [2021-01-06 19:44:36,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:44:36,769 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 19:44:36,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:44:36,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-01-06 19:44:36,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444431684] [2021-01-06 19:44:36,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-06 19:44:36,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:44:36,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-06 19:44:36,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-01-06 19:44:36,772 INFO L87 Difference]: Start difference. First operand 53957 states and 69862 transitions. Second operand 11 states. [2021-01-06 19:44:41,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:44:41,922 INFO L93 Difference]: Finished difference Result 110580 states and 142640 transitions. [2021-01-06 19:44:41,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 19:44:41,922 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 72 [2021-01-06 19:44:41,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:44:42,000 INFO L225 Difference]: With dead ends: 110580 [2021-01-06 19:44:42,000 INFO L226 Difference]: Without dead ends: 72950 [2021-01-06 19:44:42,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 68 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 19:44:42,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72950 states. [2021-01-06 19:44:45,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72950 to 54622. [2021-01-06 19:44:45,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54622 states. [2021-01-06 19:44:46,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54622 states to 54622 states and 70473 transitions. [2021-01-06 19:44:46,038 INFO L78 Accepts]: Start accepts. Automaton has 54622 states and 70473 transitions. Word has length 72 [2021-01-06 19:44:46,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:44:46,038 INFO L481 AbstractCegarLoop]: Abstraction has 54622 states and 70473 transitions. [2021-01-06 19:44:46,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-06 19:44:46,038 INFO L276 IsEmpty]: Start isEmpty. Operand 54622 states and 70473 transitions. [2021-01-06 19:44:46,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-01-06 19:44:46,044 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:44:46,045 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 19:44:46,251 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:44:46,252 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:44:46,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:44:46,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1838305115, now seen corresponding path program 1 times [2021-01-06 19:44:46,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:44:46,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252628164] [2021-01-06 19:44:46,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:44:46,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:44:46,451 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 19:44:46,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252628164] [2021-01-06 19:44:46,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054315352] [2021-01-06 19:44:46,452 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 19:44:46,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:44:46,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-06 19:44:46,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:44:46,718 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 19:44:47,005 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 19:44:47,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:44:47,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-01-06 19:44:47,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812627809] [2021-01-06 19:44:47,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-06 19:44:47,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:44:47,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-06 19:44:47,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2021-01-06 19:44:47,008 INFO L87 Difference]: Start difference. First operand 54622 states and 70473 transitions. Second operand 17 states. [2021-01-06 19:44:58,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:44:58,415 INFO L93 Difference]: Finished difference Result 177815 states and 228189 transitions. [2021-01-06 19:44:58,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-01-06 19:44:58,415 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 72 [2021-01-06 19:44:58,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:44:58,567 INFO L225 Difference]: With dead ends: 177815 [2021-01-06 19:44:58,567 INFO L226 Difference]: Without dead ends: 123207 [2021-01-06 19:44:58,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=430, Invalid=1210, Unknown=0, NotChecked=0, Total=1640 [2021-01-06 19:44:58,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123207 states. [2021-01-06 19:45:04,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123207 to 70561. [2021-01-06 19:45:04,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70561 states. [2021-01-06 19:45:04,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70561 states to 70561 states and 90972 transitions. [2021-01-06 19:45:04,274 INFO L78 Accepts]: Start accepts. Automaton has 70561 states and 90972 transitions. Word has length 72 [2021-01-06 19:45:04,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:45:04,274 INFO L481 AbstractCegarLoop]: Abstraction has 70561 states and 90972 transitions. [2021-01-06 19:45:04,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-01-06 19:45:04,274 INFO L276 IsEmpty]: Start isEmpty. Operand 70561 states and 90972 transitions. [2021-01-06 19:45:04,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-01-06 19:45:04,280 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:45:04,280 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 19:45:04,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-01-06 19:45:04,482 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:45:04,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:45:04,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1146280427, now seen corresponding path program 1 times [2021-01-06 19:45:04,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:45:04,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379190507] [2021-01-06 19:45:04,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:45:04,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:45:04,703 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 19:45:04,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379190507] [2021-01-06 19:45:04,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019677763] [2021-01-06 19:45:04,704 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 19:45:04,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:45:04,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-06 19:45:04,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:45:05,035 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 19:45:05,519 WARN L197 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 34 [2021-01-06 19:45:05,964 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 19:45:05,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:45:05,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13] total 21 [2021-01-06 19:45:05,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319298851] [2021-01-06 19:45:05,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-01-06 19:45:05,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:45:05,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-01-06 19:45:05,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2021-01-06 19:45:05,967 INFO L87 Difference]: Start difference. First operand 70561 states and 90972 transitions. Second operand 21 states. [2021-01-06 19:45:07,079 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2021-01-06 19:45:07,754 WARN L197 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2021-01-06 19:45:07,969 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-01-06 19:45:08,376 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2021-01-06 19:45:08,594 WARN L197 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-01-06 19:45:09,049 WARN L197 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-01-06 19:45:09,361 WARN L197 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-01-06 19:45:09,952 WARN L197 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2021-01-06 19:45:10,235 WARN L197 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2021-01-06 19:45:10,470 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2021-01-06 19:45:11,053 WARN L197 SmtUtils]: Spent 521.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-01-06 19:45:11,635 WARN L197 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-01-06 19:45:12,118 WARN L197 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2021-01-06 19:45:12,380 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-01-06 19:45:12,916 WARN L197 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-01-06 19:45:13,435 WARN L197 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-01-06 19:45:13,867 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2021-01-06 19:45:15,088 WARN L197 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2021-01-06 19:45:15,311 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2021-01-06 19:45:15,776 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2021-01-06 19:45:16,316 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2021-01-06 19:45:16,703 WARN L197 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2021-01-06 19:45:17,051 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2021-01-06 19:45:17,252 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2021-01-06 19:45:18,279 WARN L197 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-01-06 19:45:18,514 WARN L197 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-01-06 19:45:18,989 WARN L197 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2021-01-06 19:45:19,238 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2021-01-06 19:45:20,019 WARN L197 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2021-01-06 19:45:20,526 WARN L197 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2021-01-06 19:45:20,933 WARN L197 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2021-01-06 19:45:21,162 WARN L197 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2021-01-06 19:45:21,422 WARN L197 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2021-01-06 19:45:21,651 WARN L197 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2021-01-06 19:45:21,934 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2021-01-06 19:45:22,238 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2021-01-06 19:45:23,740 WARN L197 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-01-06 19:45:24,287 WARN L197 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2021-01-06 19:45:24,848 WARN L197 SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-01-06 19:45:25,074 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2021-01-06 19:45:25,322 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2021-01-06 19:45:26,070 WARN L197 SmtUtils]: Spent 520.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 82 [2021-01-06 19:45:26,668 WARN L197 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2021-01-06 19:45:27,235 WARN L197 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 82 [2021-01-06 19:45:27,831 WARN L197 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2021-01-06 19:45:28,213 WARN L197 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-01-06 19:45:28,629 WARN L197 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-01-06 19:45:29,361 WARN L197 SmtUtils]: Spent 524.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2021-01-06 19:45:29,894 WARN L197 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2021-01-06 19:45:30,368 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2021-01-06 19:45:30,616 WARN L197 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2021-01-06 19:45:30,826 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2021-01-06 19:45:31,181 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 49 [2021-01-06 19:45:31,685 WARN L197 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2021-01-06 19:45:31,982 WARN L197 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2021-01-06 19:45:32,287 WARN L197 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2021-01-06 19:45:33,309 WARN L197 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2021-01-06 19:45:33,636 WARN L197 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2021-01-06 19:45:34,052 WARN L197 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2021-01-06 19:45:34,534 WARN L197 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2021-01-06 19:45:34,727 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2021-01-06 19:45:35,316 WARN L197 SmtUtils]: Spent 508.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2021-01-06 19:45:35,831 WARN L197 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2021-01-06 19:45:36,075 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2021-01-06 19:45:37,216 WARN L197 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2021-01-06 19:45:37,456 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 39 [2021-01-06 19:45:37,662 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 39 [2021-01-06 19:45:38,219 WARN L197 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-01-06 19:45:38,699 WARN L197 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2021-01-06 19:45:39,032 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2021-01-06 19:45:39,664 WARN L197 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-01-06 19:45:40,359 WARN L197 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-01-06 19:45:41,012 WARN L197 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2021-01-06 19:45:41,446 WARN L197 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2021-01-06 19:45:41,668 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2021-01-06 19:45:42,230 WARN L197 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2021-01-06 19:45:42,670 WARN L197 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2021-01-06 19:45:42,894 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2021-01-06 19:45:43,167 WARN L197 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2021-01-06 19:45:44,122 WARN L197 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2021-01-06 19:45:44,625 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2021-01-06 19:45:45,425 WARN L197 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-01-06 19:45:46,539 WARN L197 SmtUtils]: Spent 516.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-01-06 19:45:46,983 WARN L197 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2021-01-06 19:45:48,092 WARN L197 SmtUtils]: Spent 513.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2021-01-06 19:45:48,810 WARN L197 SmtUtils]: Spent 615.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2021-01-06 19:45:49,090 WARN L197 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2021-01-06 19:45:49,723 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-01-06 19:45:50,535 WARN L197 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2021-01-06 19:45:51,462 WARN L197 SmtUtils]: Spent 749.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2021-01-06 19:45:52,911 WARN L197 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 95 DAG size of output: 93 [2021-01-06 19:45:53,426 WARN L197 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2021-01-06 19:45:53,785 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-01-06 19:45:54,103 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2021-01-06 19:45:54,479 WARN L197 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2021-01-06 19:45:54,932 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2021-01-06 19:45:55,189 WARN L197 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2021-01-06 19:45:56,740 WARN L197 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 88 DAG size of output: 86 [2021-01-06 19:45:57,368 WARN L197 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-01-06 19:45:57,845 WARN L197 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-01-06 19:45:58,325 WARN L197 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2021-01-06 19:45:58,894 WARN L197 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2021-01-06 19:46:00,598 WARN L197 SmtUtils]: Spent 700.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2021-01-06 19:46:01,033 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-01-06 19:46:01,804 WARN L197 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2021-01-06 19:46:02,245 WARN L197 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2021-01-06 19:46:02,875 WARN L197 SmtUtils]: Spent 495.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2021-01-06 19:46:03,378 WARN L197 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2021-01-06 19:46:03,979 WARN L197 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2021-01-06 19:46:04,470 WARN L197 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2021-01-06 19:46:04,780 WARN L197 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2021-01-06 19:46:06,202 WARN L197 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 98 DAG size of output: 96 [2021-01-06 19:46:07,397 WARN L197 SmtUtils]: Spent 788.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2021-01-06 19:46:08,468 WARN L197 SmtUtils]: Spent 882.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 84 [2021-01-06 19:46:09,162 WARN L197 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2021-01-06 19:46:09,954 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2021-01-06 19:46:10,621 WARN L197 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2021-01-06 19:46:10,963 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2021-01-06 19:46:12,041 WARN L197 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2021-01-06 19:46:13,898 WARN L197 SmtUtils]: Spent 1.56 s on a formula simplification. DAG size of input: 90 DAG size of output: 87 [2021-01-06 19:46:14,852 WARN L197 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-01-06 19:46:16,672 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 24 [2021-01-06 19:46:17,525 WARN L197 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-01-06 19:46:17,729 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 29 [2021-01-06 19:46:18,382 WARN L197 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2021-01-06 19:46:19,118 WARN L197 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2021-01-06 19:46:19,350 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 30 [2021-01-06 19:46:19,700 WARN L197 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 32 [2021-01-06 19:46:20,373 WARN L197 SmtUtils]: Spent 475.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2021-01-06 19:46:20,900 WARN L197 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2021-01-06 19:46:21,570 WARN L197 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2021-01-06 19:46:21,836 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 32 [2021-01-06 19:46:22,525 WARN L197 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2021-01-06 19:46:23,004 WARN L197 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2021-01-06 19:46:23,686 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2021-01-06 19:46:24,067 WARN L197 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 35 [2021-01-06 19:46:24,587 WARN L197 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-01-06 19:46:25,257 WARN L197 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2021-01-06 19:46:26,196 WARN L197 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2021-01-06 19:46:27,943 WARN L197 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-01-06 19:46:28,524 WARN L197 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2021-01-06 19:46:29,073 WARN L197 SmtUtils]: Spent 464.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-01-06 19:46:29,802 WARN L197 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2021-01-06 19:46:30,956 WARN L197 SmtUtils]: Spent 979.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2021-01-06 19:46:32,351 WARN L197 SmtUtils]: Spent 971.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2021-01-06 19:46:33,073 WARN L197 SmtUtils]: Spent 488.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2021-01-06 19:46:34,542 WARN L197 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-01-06 19:46:35,807 WARN L197 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-01-06 19:46:38,027 WARN L197 SmtUtils]: Spent 520.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2021-01-06 19:46:39,734 WARN L197 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-01-06 19:46:39,983 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 30 [2021-01-06 19:46:40,719 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2021-01-06 19:46:41,419 WARN L197 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2021-01-06 19:46:42,973 WARN L197 SmtUtils]: Spent 989.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-01-06 19:46:43,264 WARN L197 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2021-01-06 19:46:43,940 WARN L197 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2021-01-06 19:46:44,522 WARN L197 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2021-01-06 19:46:45,595 WARN L197 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2021-01-06 19:46:47,194 WARN L197 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 90 DAG size of output: 80 [2021-01-06 19:46:48,394 WARN L197 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2021-01-06 19:46:49,664 WARN L197 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-01-06 19:46:51,127 WARN L197 SmtUtils]: Spent 475.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2021-01-06 19:46:53,156 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2021-01-06 19:46:54,768 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30 [2021-01-06 19:46:55,575 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 23 [2021-01-06 19:46:57,629 WARN L197 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2021-01-06 19:46:57,935 WARN L197 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2021-01-06 19:46:58,687 WARN L197 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2021-01-06 19:47:00,432 WARN L197 SmtUtils]: Spent 989.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2021-01-06 19:47:01,968 WARN L197 SmtUtils]: Spent 885.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2021-01-06 19:47:02,488 WARN L197 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-01-06 19:47:03,250 WARN L197 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2021-01-06 19:47:04,119 WARN L197 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-01-06 19:47:05,769 WARN L197 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-01-06 19:47:09,691 WARN L197 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2021-01-06 19:47:11,262 WARN L197 SmtUtils]: Spent 989.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2021-01-06 19:47:21,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:47:21,766 INFO L93 Difference]: Finished difference Result 386259 states and 496043 transitions. [2021-01-06 19:47:21,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 286 states. [2021-01-06 19:47:21,772 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 72 [2021-01-06 19:47:21,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:47:22,310 INFO L225 Difference]: With dead ends: 386259 [2021-01-06 19:47:22,310 INFO L226 Difference]: Without dead ends: 327682 [2021-01-06 19:47:22,436 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 302 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42245 ImplicationChecksByTransitivity, 86.8s TimeCoverageRelationStatistics Valid=9604, Invalid=82508, Unknown=0, NotChecked=0, Total=92112 [2021-01-06 19:47:22,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327682 states. [2021-01-06 19:47:38,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327682 to 169143. [2021-01-06 19:47:38,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169143 states. [2021-01-06 19:47:38,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169143 states to 169143 states and 218392 transitions. [2021-01-06 19:47:38,355 INFO L78 Accepts]: Start accepts. Automaton has 169143 states and 218392 transitions. Word has length 72 [2021-01-06 19:47:38,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:47:38,356 INFO L481 AbstractCegarLoop]: Abstraction has 169143 states and 218392 transitions. [2021-01-06 19:47:38,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2021-01-06 19:47:38,356 INFO L276 IsEmpty]: Start isEmpty. Operand 169143 states and 218392 transitions. [2021-01-06 19:47:38,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-01-06 19:47:38,361 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:47:38,361 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Abandoning pump threads because process wont die! [2021-01-06 19:47:38,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:47:38,664 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:47:38,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:47:38,665 INFO L82 PathProgramCache]: Analyzing trace with hash -894041155, now seen corresponding path program 1 times [2021-01-06 19:47:38,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:47:38,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604279274] [2021-01-06 19:47:38,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:47:38,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:47:38,753 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 19:47:38,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604279274] [2021-01-06 19:47:38,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:47:38,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:47:38,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476242000] [2021-01-06 19:47:38,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:47:38,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:47:38,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:47:38,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:47:38,755 INFO L87 Difference]: Start difference. First operand 169143 states and 218392 transitions. Second operand 3 states.