/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.3.1.ufo.BOUNDED-6.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 19:42:18,199 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 19:42:18,202 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 19:42:18,241 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 19:42:18,242 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 19:42:18,243 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 19:42:18,245 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 19:42:18,248 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 19:42:18,250 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 19:42:18,251 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 19:42:18,253 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 19:42:18,254 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 19:42:18,255 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 19:42:18,256 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 19:42:18,258 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 19:42:18,262 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 19:42:18,263 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 19:42:18,267 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 19:42:18,271 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 19:42:18,276 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 19:42:18,279 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 19:42:18,280 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 19:42:18,282 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 19:42:18,283 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 19:42:18,286 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 19:42:18,290 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 19:42:18,291 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 19:42:18,292 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 19:42:18,294 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 19:42:18,318 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 19:42:18,319 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 19:42:18,320 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 19:42:18,321 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 19:42:18,324 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 19:42:18,326 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 19:42:18,327 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 19:42:18,328 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 19:42:18,359 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 19:42:18,359 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 19:42:18,361 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 19:42:18,361 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 19:42:18,361 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 19:42:18,362 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 19:42:18,362 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 19:42:18,362 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 19:42:18,363 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 19:42:18,363 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 19:42:18,363 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 19:42:18,364 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 19:42:18,364 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 19:42:18,364 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 19:42:18,364 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 19:42:18,365 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 19:42:18,365 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 19:42:18,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 19:42:18,365 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 19:42:18,366 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 19:42:18,366 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 19:42:18,366 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 19:42:18,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 19:42:18,367 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 19:42:18,367 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 19:42:18,367 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 19:42:18,760 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 19:42:18,790 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 19:42:18,793 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 19:42:18,795 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 19:42:18,796 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 19:42:18,797 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c [2021-01-06 19:42:18,894 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/5f90890b6/83f9e9dfa6d7405782c601917c2120ad/FLAG1539a0840 [2021-01-06 19:42:19,645 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 19:42:19,646 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c [2021-01-06 19:42:19,663 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/5f90890b6/83f9e9dfa6d7405782c601917c2120ad/FLAG1539a0840 [2021-01-06 19:42:19,930 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/5f90890b6/83f9e9dfa6d7405782c601917c2120ad [2021-01-06 19:42:19,934 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 19:42:19,938 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 19:42:19,942 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 19:42:19,943 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 19:42:19,947 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 19:42:19,949 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 07:42:19" (1/1) ... [2021-01-06 19:42:19,952 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ebd557f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:42:19, skipping insertion in model container [2021-01-06 19:42:19,952 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 07:42:19" (1/1) ... [2021-01-06 19:42:19,966 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 19:42:20,026 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[~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 19:42:20,315 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.3.1.ufo.BOUNDED-6.pals.c[6844,6857] [2021-01-06 19:42:20,320 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 19:42:20,333 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[~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 19:42:20,394 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.3.1.ufo.BOUNDED-6.pals.c[6844,6857] [2021-01-06 19:42:20,395 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 19:42:20,423 INFO L208 MainTranslator]: Completed translation [2021-01-06 19:42:20,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:42:20 WrapperNode [2021-01-06 19:42:20,424 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 19:42:20,426 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 19:42:20,426 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 19:42:20,426 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 19:42:20,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:42:20" (1/1) ... [2021-01-06 19:42:20,465 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:42:20" (1/1) ... [2021-01-06 19:42:20,528 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 19:42:20,531 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 19:42:20,531 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 19:42:20,532 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 19:42:20,543 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:42:20" (1/1) ... [2021-01-06 19:42:20,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:42:20" (1/1) ... [2021-01-06 19:42:20,562 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:42:20" (1/1) ... [2021-01-06 19:42:20,562 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:42:20" (1/1) ... [2021-01-06 19:42:20,576 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:42:20" (1/1) ... [2021-01-06 19:42:20,592 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:42:20" (1/1) ... [2021-01-06 19:42:20,598 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:42:20" (1/1) ... [2021-01-06 19:42:20,607 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 19:42:20,609 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 19:42:20,612 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 19:42:20,612 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 19:42:20,613 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:42:20" (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 19:42:20,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 19:42:20,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 19:42:20,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 19:42:20,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 19:42:21,400 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 19:42:21,401 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-01-06 19:42:21,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 07:42:21 BoogieIcfgContainer [2021-01-06 19:42:21,407 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 19:42:21,410 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 19:42:21,410 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 19:42:21,420 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 19:42:21,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 07:42:19" (1/3) ... [2021-01-06 19:42:21,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bf1a6a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 07:42:21, skipping insertion in model container [2021-01-06 19:42:21,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:42:20" (2/3) ... [2021-01-06 19:42:21,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bf1a6a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 07:42:21, skipping insertion in model container [2021-01-06 19:42:21,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 07:42:21" (3/3) ... [2021-01-06 19:42:21,429 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c [2021-01-06 19:42:21,443 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 19:42:21,456 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 19:42:21,496 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 19:42:21,524 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 19:42:21,525 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 19:42:21,525 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 19:42:21,525 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 19:42:21,525 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 19:42:21,525 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 19:42:21,526 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 19:42:21,526 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 19:42:21,544 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states. [2021-01-06 19:42:21,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-01-06 19:42:21,551 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:42:21,552 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 19:42:21,553 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:42:21,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:42:21,559 INFO L82 PathProgramCache]: Analyzing trace with hash 233700331, now seen corresponding path program 1 times [2021-01-06 19:42:21,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:42:21,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921918299] [2021-01-06 19:42:21,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:42:21,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:42:21,876 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 19:42:21,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921918299] [2021-01-06 19:42:21,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:42:21,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 19:42:21,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216637677] [2021-01-06 19:42:21,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 19:42:21,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:42:21,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 19:42:21,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 19:42:21,910 INFO L87 Difference]: Start difference. First operand 79 states. Second operand 5 states. [2021-01-06 19:42:22,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:42:22,073 INFO L93 Difference]: Finished difference Result 191 states and 307 transitions. [2021-01-06 19:42:22,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 19:42:22,075 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2021-01-06 19:42:22,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:42:22,088 INFO L225 Difference]: With dead ends: 191 [2021-01-06 19:42:22,089 INFO L226 Difference]: Without dead ends: 127 [2021-01-06 19:42:22,092 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 19:42:22,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-01-06 19:42:22,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 75. [2021-01-06 19:42:22,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2021-01-06 19:42:22,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 105 transitions. [2021-01-06 19:42:22,141 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 105 transitions. Word has length 25 [2021-01-06 19:42:22,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:42:22,141 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 105 transitions. [2021-01-06 19:42:22,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 19:42:22,142 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 105 transitions. [2021-01-06 19:42:22,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-01-06 19:42:22,144 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:42:22,144 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 19:42:22,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 19:42:22,144 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:42:22,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:42:22,147 INFO L82 PathProgramCache]: Analyzing trace with hash 182027041, now seen corresponding path program 1 times [2021-01-06 19:42:22,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:42:22,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851152972] [2021-01-06 19:42:22,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:42:22,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:42:22,312 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 19:42:22,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851152972] [2021-01-06 19:42:22,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:42:22,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:42:22,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104627428] [2021-01-06 19:42:22,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:42:22,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:42:22,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:42:22,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:42:22,317 INFO L87 Difference]: Start difference. First operand 75 states and 105 transitions. Second operand 3 states. [2021-01-06 19:42:22,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:42:22,349 INFO L93 Difference]: Finished difference Result 167 states and 249 transitions. [2021-01-06 19:42:22,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:42:22,350 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2021-01-06 19:42:22,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:42:22,352 INFO L225 Difference]: With dead ends: 167 [2021-01-06 19:42:22,352 INFO L226 Difference]: Without dead ends: 115 [2021-01-06 19:42:22,354 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 19:42:22,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-01-06 19:42:22,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 113. [2021-01-06 19:42:22,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2021-01-06 19:42:22,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 165 transitions. [2021-01-06 19:42:22,371 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 165 transitions. Word has length 41 [2021-01-06 19:42:22,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:42:22,371 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 165 transitions. [2021-01-06 19:42:22,371 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:42:22,372 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 165 transitions. [2021-01-06 19:42:22,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-01-06 19:42:22,374 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:42:22,374 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 19:42:22,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 19:42:22,374 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:42:22,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:42:22,375 INFO L82 PathProgramCache]: Analyzing trace with hash 54990345, now seen corresponding path program 1 times [2021-01-06 19:42:22,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:42:22,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863355914] [2021-01-06 19:42:22,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:42:22,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:42:22,495 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 19:42:22,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863355914] [2021-01-06 19:42:22,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:42:22,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:42:22,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37447902] [2021-01-06 19:42:22,497 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:42:22,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:42:22,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:42:22,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:42:22,499 INFO L87 Difference]: Start difference. First operand 113 states and 165 transitions. Second operand 3 states. [2021-01-06 19:42:22,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:42:22,548 INFO L93 Difference]: Finished difference Result 269 states and 409 transitions. [2021-01-06 19:42:22,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:42:22,550 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2021-01-06 19:42:22,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:42:22,556 INFO L225 Difference]: With dead ends: 269 [2021-01-06 19:42:22,556 INFO L226 Difference]: Without dead ends: 179 [2021-01-06 19:42:22,560 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 19:42:22,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-01-06 19:42:22,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 177. [2021-01-06 19:42:22,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2021-01-06 19:42:22,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 264 transitions. [2021-01-06 19:42:22,608 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 264 transitions. Word has length 42 [2021-01-06 19:42:22,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:42:22,608 INFO L481 AbstractCegarLoop]: Abstraction has 177 states and 264 transitions. [2021-01-06 19:42:22,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:42:22,609 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 264 transitions. [2021-01-06 19:42:22,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-01-06 19:42:22,612 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:42:22,612 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:42:22,613 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 19:42:22,613 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:42:22,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:42:22,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1508061361, now seen corresponding path program 1 times [2021-01-06 19:42:22,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:42:22,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099369041] [2021-01-06 19:42:22,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:42:22,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:42:22,772 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 19:42:22,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099369041] [2021-01-06 19:42:22,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:42:22,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:42:22,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663417043] [2021-01-06 19:42:22,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:42:22,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:42:22,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:42:22,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:42:22,776 INFO L87 Difference]: Start difference. First operand 177 states and 264 transitions. Second operand 3 states. [2021-01-06 19:42:22,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:42:22,806 INFO L93 Difference]: Finished difference Result 437 states and 666 transitions. [2021-01-06 19:42:22,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:42:22,807 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2021-01-06 19:42:22,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:42:22,809 INFO L225 Difference]: With dead ends: 437 [2021-01-06 19:42:22,809 INFO L226 Difference]: Without dead ends: 283 [2021-01-06 19:42:22,811 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 19:42:22,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2021-01-06 19:42:22,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 281. [2021-01-06 19:42:22,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2021-01-06 19:42:22,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 420 transitions. [2021-01-06 19:42:22,836 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 420 transitions. Word has length 43 [2021-01-06 19:42:22,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:42:22,836 INFO L481 AbstractCegarLoop]: Abstraction has 281 states and 420 transitions. [2021-01-06 19:42:22,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:42:22,837 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 420 transitions. [2021-01-06 19:42:22,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-01-06 19:42:22,838 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:42:22,838 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 19:42:22,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 19:42:22,839 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:42:22,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:42:22,840 INFO L82 PathProgramCache]: Analyzing trace with hash -922713191, now seen corresponding path program 1 times [2021-01-06 19:42:22,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:42:22,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074199111] [2021-01-06 19:42:22,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:42:22,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:42:22,950 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 19:42:22,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074199111] [2021-01-06 19:42:22,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:42:22,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 19:42:22,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947692151] [2021-01-06 19:42:22,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 19:42:22,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:42:22,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 19:42:22,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-01-06 19:42:22,956 INFO L87 Difference]: Start difference. First operand 281 states and 420 transitions. Second operand 5 states. [2021-01-06 19:42:23,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:42:23,058 INFO L93 Difference]: Finished difference Result 971 states and 1467 transitions. [2021-01-06 19:42:23,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 19:42:23,058 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2021-01-06 19:42:23,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:42:23,063 INFO L225 Difference]: With dead ends: 971 [2021-01-06 19:42:23,063 INFO L226 Difference]: Without dead ends: 713 [2021-01-06 19:42:23,065 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 19:42:23,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2021-01-06 19:42:23,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 709. [2021-01-06 19:42:23,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 709 states. [2021-01-06 19:42:23,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 1060 transitions. [2021-01-06 19:42:23,120 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 1060 transitions. Word has length 44 [2021-01-06 19:42:23,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:42:23,121 INFO L481 AbstractCegarLoop]: Abstraction has 709 states and 1060 transitions. [2021-01-06 19:42:23,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 19:42:23,121 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 1060 transitions. [2021-01-06 19:42:23,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-01-06 19:42:23,123 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:42:23,123 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 19:42:23,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-06 19:42:23,124 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:42:23,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:42:23,124 INFO L82 PathProgramCache]: Analyzing trace with hash 2131571990, now seen corresponding path program 1 times [2021-01-06 19:42:23,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:42:23,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331762661] [2021-01-06 19:42:23,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:42:23,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:42:23,248 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 19:42:23,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331762661] [2021-01-06 19:42:23,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:42:23,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 19:42:23,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722012315] [2021-01-06 19:42:23,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 19:42:23,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:42:23,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 19:42:23,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-01-06 19:42:23,251 INFO L87 Difference]: Start difference. First operand 709 states and 1060 transitions. Second operand 5 states. [2021-01-06 19:42:23,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:42:23,403 INFO L93 Difference]: Finished difference Result 2801 states and 4220 transitions. [2021-01-06 19:42:23,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 19:42:23,403 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2021-01-06 19:42:23,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:42:23,415 INFO L225 Difference]: With dead ends: 2801 [2021-01-06 19:42:23,415 INFO L226 Difference]: Without dead ends: 2115 [2021-01-06 19:42:23,419 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 19:42:23,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2115 states. [2021-01-06 19:42:23,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2115 to 1393. [2021-01-06 19:42:23,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1393 states. [2021-01-06 19:42:23,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1393 states to 1393 states and 2048 transitions. [2021-01-06 19:42:23,510 INFO L78 Accepts]: Start accepts. Automaton has 1393 states and 2048 transitions. Word has length 45 [2021-01-06 19:42:23,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:42:23,511 INFO L481 AbstractCegarLoop]: Abstraction has 1393 states and 2048 transitions. [2021-01-06 19:42:23,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 19:42:23,511 INFO L276 IsEmpty]: Start isEmpty. Operand 1393 states and 2048 transitions. [2021-01-06 19:42:23,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-01-06 19:42:23,513 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:42:23,513 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 19:42:23,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-06 19:42:23,514 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:42:23,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:42:23,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1270898830, now seen corresponding path program 1 times [2021-01-06 19:42:23,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:42:23,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216543566] [2021-01-06 19:42:23,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:42:23,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:42:23,600 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 19:42:23,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216543566] [2021-01-06 19:42:23,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:42:23,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 19:42:23,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745055504] [2021-01-06 19:42:23,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 19:42:23,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:42:23,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 19:42:23,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 19:42:23,603 INFO L87 Difference]: Start difference. First operand 1393 states and 2048 transitions. Second operand 5 states. [2021-01-06 19:42:23,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:42:23,780 INFO L93 Difference]: Finished difference Result 2955 states and 4265 transitions. [2021-01-06 19:42:23,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 19:42:23,781 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2021-01-06 19:42:23,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:42:23,797 INFO L225 Difference]: With dead ends: 2955 [2021-01-06 19:42:23,797 INFO L226 Difference]: Without dead ends: 2953 [2021-01-06 19:42:23,800 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 19:42:23,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2953 states. [2021-01-06 19:42:23,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2953 to 1537. [2021-01-06 19:42:23,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1537 states. [2021-01-06 19:42:23,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1537 states to 1537 states and 2192 transitions. [2021-01-06 19:42:23,938 INFO L78 Accepts]: Start accepts. Automaton has 1537 states and 2192 transitions. Word has length 46 [2021-01-06 19:42:23,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:42:23,938 INFO L481 AbstractCegarLoop]: Abstraction has 1537 states and 2192 transitions. [2021-01-06 19:42:23,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 19:42:23,939 INFO L276 IsEmpty]: Start isEmpty. Operand 1537 states and 2192 transitions. [2021-01-06 19:42:23,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-01-06 19:42:23,940 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:42:23,940 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 19:42:23,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-06 19:42:23,941 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:42:23,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:42:23,941 INFO L82 PathProgramCache]: Analyzing trace with hash 795736558, now seen corresponding path program 1 times [2021-01-06 19:42:23,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:42:23,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970684142] [2021-01-06 19:42:23,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:42:23,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:42:23,994 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 19:42:23,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970684142] [2021-01-06 19:42:23,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:42:23,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:42:23,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731503644] [2021-01-06 19:42:23,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:42:23,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:42:23,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:42:23,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:42:23,999 INFO L87 Difference]: Start difference. First operand 1537 states and 2192 transitions. Second operand 3 states. [2021-01-06 19:42:24,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:42:24,135 INFO L93 Difference]: Finished difference Result 3651 states and 5220 transitions. [2021-01-06 19:42:24,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:42:24,136 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2021-01-06 19:42:24,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:42:24,148 INFO L225 Difference]: With dead ends: 3651 [2021-01-06 19:42:24,148 INFO L226 Difference]: Without dead ends: 2137 [2021-01-06 19:42:24,151 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 19:42:24,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2137 states. [2021-01-06 19:42:24,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2137 to 2135. [2021-01-06 19:42:24,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2135 states. [2021-01-06 19:42:24,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2135 states to 2135 states and 3030 transitions. [2021-01-06 19:42:24,305 INFO L78 Accepts]: Start accepts. Automaton has 2135 states and 3030 transitions. Word has length 47 [2021-01-06 19:42:24,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:42:24,305 INFO L481 AbstractCegarLoop]: Abstraction has 2135 states and 3030 transitions. [2021-01-06 19:42:24,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:42:24,305 INFO L276 IsEmpty]: Start isEmpty. Operand 2135 states and 3030 transitions. [2021-01-06 19:42:24,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-01-06 19:42:24,308 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:42:24,308 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 19:42:24,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-06 19:42:24,309 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:42:24,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:42:24,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1282796535, now seen corresponding path program 1 times [2021-01-06 19:42:24,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:42:24,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745438515] [2021-01-06 19:42:24,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:42:24,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:42:24,580 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 19:42:24,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745438515] [2021-01-06 19:42:24,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225189124] [2021-01-06 19:42:24,587 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 19:42:24,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:42:24,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 11 conjunts are in the unsatisfiable core [2021-01-06 19:42:24,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:42:24,919 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 19:42:24,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:42:24,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 14 [2021-01-06 19:42:24,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077707669] [2021-01-06 19:42:24,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-06 19:42:24,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:42:24,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-06 19:42:24,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-01-06 19:42:24,923 INFO L87 Difference]: Start difference. First operand 2135 states and 3030 transitions. Second operand 14 states. [2021-01-06 19:42:30,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:42:30,000 INFO L93 Difference]: Finished difference Result 16364 states and 23062 transitions. [2021-01-06 19:42:30,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-01-06 19:42:30,001 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 66 [2021-01-06 19:42:30,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:42:30,074 INFO L225 Difference]: With dead ends: 16364 [2021-01-06 19:42:30,074 INFO L226 Difference]: Without dead ends: 14354 [2021-01-06 19:42:30,084 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2714 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1482, Invalid=5828, Unknown=0, NotChecked=0, Total=7310 [2021-01-06 19:42:30,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14354 states. [2021-01-06 19:42:30,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14354 to 8129. [2021-01-06 19:42:30,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8129 states. [2021-01-06 19:42:30,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8129 states to 8129 states and 11436 transitions. [2021-01-06 19:42:30,725 INFO L78 Accepts]: Start accepts. Automaton has 8129 states and 11436 transitions. Word has length 66 [2021-01-06 19:42:30,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:42:30,725 INFO L481 AbstractCegarLoop]: Abstraction has 8129 states and 11436 transitions. [2021-01-06 19:42:30,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-01-06 19:42:30,725 INFO L276 IsEmpty]: Start isEmpty. Operand 8129 states and 11436 transitions. [2021-01-06 19:42:30,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-01-06 19:42:30,729 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:42:30,729 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 19:42:30,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-01-06 19:42:30,944 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:42:30,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:42:30,945 INFO L82 PathProgramCache]: Analyzing trace with hash 129974557, now seen corresponding path program 1 times [2021-01-06 19:42:30,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:42:30,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885225086] [2021-01-06 19:42:30,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:42:30,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:42:31,000 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 19:42:31,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885225086] [2021-01-06 19:42:31,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:42:31,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:42:31,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880785175] [2021-01-06 19:42:31,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:42:31,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:42:31,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:42:31,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:42:31,011 INFO L87 Difference]: Start difference. First operand 8129 states and 11436 transitions. Second operand 3 states. [2021-01-06 19:42:31,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:42:31,555 INFO L93 Difference]: Finished difference Result 12669 states and 17784 transitions. [2021-01-06 19:42:31,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:42:31,556 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2021-01-06 19:42:31,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:42:31,607 INFO L225 Difference]: With dead ends: 12669 [2021-01-06 19:42:31,607 INFO L226 Difference]: Without dead ends: 8439 [2021-01-06 19:42:31,615 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 19:42:31,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8439 states. [2021-01-06 19:42:32,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8439 to 8199. [2021-01-06 19:42:32,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8199 states. [2021-01-06 19:42:32,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8199 states to 8199 states and 11291 transitions. [2021-01-06 19:42:32,197 INFO L78 Accepts]: Start accepts. Automaton has 8199 states and 11291 transitions. Word has length 67 [2021-01-06 19:42:32,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:42:32,197 INFO L481 AbstractCegarLoop]: Abstraction has 8199 states and 11291 transitions. [2021-01-06 19:42:32,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:42:32,197 INFO L276 IsEmpty]: Start isEmpty. Operand 8199 states and 11291 transitions. [2021-01-06 19:42:32,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-01-06 19:42:32,201 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:42:32,202 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 19:42:32,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-01-06 19:42:32,202 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:42:32,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:42:32,203 INFO L82 PathProgramCache]: Analyzing trace with hash 788719803, now seen corresponding path program 1 times [2021-01-06 19:42:32,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:42:32,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281114883] [2021-01-06 19:42:32,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:42:32,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:42:32,297 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 19:42:32,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281114883] [2021-01-06 19:42:32,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:42:32,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:42:32,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317701455] [2021-01-06 19:42:32,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:42:32,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:42:32,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:42:32,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:42:32,300 INFO L87 Difference]: Start difference. First operand 8199 states and 11291 transitions. Second operand 3 states. [2021-01-06 19:42:33,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:42:33,063 INFO L93 Difference]: Finished difference Result 19858 states and 27237 transitions. [2021-01-06 19:42:33,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:42:33,064 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2021-01-06 19:42:33,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:42:33,106 INFO L225 Difference]: With dead ends: 19858 [2021-01-06 19:42:33,107 INFO L226 Difference]: Without dead ends: 13692 [2021-01-06 19:42:33,119 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 19:42:33,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13692 states. [2021-01-06 19:42:33,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13692 to 13652. [2021-01-06 19:42:33,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13652 states. [2021-01-06 19:42:33,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13652 states to 13652 states and 18469 transitions. [2021-01-06 19:42:33,927 INFO L78 Accepts]: Start accepts. Automaton has 13652 states and 18469 transitions. Word has length 67 [2021-01-06 19:42:33,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:42:33,928 INFO L481 AbstractCegarLoop]: Abstraction has 13652 states and 18469 transitions. [2021-01-06 19:42:33,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:42:33,928 INFO L276 IsEmpty]: Start isEmpty. Operand 13652 states and 18469 transitions. [2021-01-06 19:42:33,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-01-06 19:42:33,933 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:42:33,933 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 19:42:33,934 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-01-06 19:42:33,934 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:42:33,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:42:33,934 INFO L82 PathProgramCache]: Analyzing trace with hash -691738293, now seen corresponding path program 1 times [2021-01-06 19:42:33,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:42:33,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351778880] [2021-01-06 19:42:33,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:42:33,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:42:34,014 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 19:42:34,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351778880] [2021-01-06 19:42:34,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:42:34,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 19:42:34,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793582664] [2021-01-06 19:42:34,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 19:42:34,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:42:34,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 19:42:34,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 19:42:34,018 INFO L87 Difference]: Start difference. First operand 13652 states and 18469 transitions. Second operand 6 states. [2021-01-06 19:42:35,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:42:35,224 INFO L93 Difference]: Finished difference Result 34017 states and 45971 transitions. [2021-01-06 19:42:35,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 19:42:35,228 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2021-01-06 19:42:35,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:42:35,281 INFO L225 Difference]: With dead ends: 34017 [2021-01-06 19:42:35,281 INFO L226 Difference]: Without dead ends: 20418 [2021-01-06 19:42:35,303 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 19:42:35,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20418 states. [2021-01-06 19:42:36,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20418 to 18657. [2021-01-06 19:42:36,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18657 states. [2021-01-06 19:42:36,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18657 states to 18657 states and 24991 transitions. [2021-01-06 19:42:36,252 INFO L78 Accepts]: Start accepts. Automaton has 18657 states and 24991 transitions. Word has length 67 [2021-01-06 19:42:36,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:42:36,252 INFO L481 AbstractCegarLoop]: Abstraction has 18657 states and 24991 transitions. [2021-01-06 19:42:36,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 19:42:36,252 INFO L276 IsEmpty]: Start isEmpty. Operand 18657 states and 24991 transitions. [2021-01-06 19:42:36,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-01-06 19:42:36,257 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:42:36,258 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 19:42:36,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-01-06 19:42:36,258 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:42:36,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:42:36,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1134894771, now seen corresponding path program 1 times [2021-01-06 19:42:36,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:42:36,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751017888] [2021-01-06 19:42:36,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:42:36,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:42:36,412 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 19:42:36,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751017888] [2021-01-06 19:42:36,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:42:36,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:42:36,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499561408] [2021-01-06 19:42:36,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:42:36,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:42:36,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:42:36,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:42:36,418 INFO L87 Difference]: Start difference. First operand 18657 states and 24991 transitions. Second operand 3 states. [2021-01-06 19:42:37,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:42:37,264 INFO L93 Difference]: Finished difference Result 36798 states and 49081 transitions. [2021-01-06 19:42:37,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:42:37,265 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2021-01-06 19:42:37,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:42:37,320 INFO L225 Difference]: With dead ends: 36798 [2021-01-06 19:42:37,321 INFO L226 Difference]: Without dead ends: 20558 [2021-01-06 19:42:37,342 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 19:42:37,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20558 states. [2021-01-06 19:42:38,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20558 to 16817. [2021-01-06 19:42:38,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16817 states. [2021-01-06 19:42:38,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16817 states to 16817 states and 22125 transitions. [2021-01-06 19:42:38,421 INFO L78 Accepts]: Start accepts. Automaton has 16817 states and 22125 transitions. Word has length 67 [2021-01-06 19:42:38,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:42:38,421 INFO L481 AbstractCegarLoop]: Abstraction has 16817 states and 22125 transitions. [2021-01-06 19:42:38,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:42:38,422 INFO L276 IsEmpty]: Start isEmpty. Operand 16817 states and 22125 transitions. [2021-01-06 19:42:38,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-01-06 19:42:38,426 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:42:38,427 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 19:42:38,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-01-06 19:42:38,427 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:42:38,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:42:38,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1562240835, now seen corresponding path program 1 times [2021-01-06 19:42:38,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:42:38,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350023476] [2021-01-06 19:42:38,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:42:38,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:42:38,518 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 19:42:38,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350023476] [2021-01-06 19:42:38,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:42:38,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 19:42:38,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845467211] [2021-01-06 19:42:38,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 19:42:38,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:42:38,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 19:42:38,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-01-06 19:42:38,522 INFO L87 Difference]: Start difference. First operand 16817 states and 22125 transitions. Second operand 5 states. [2021-01-06 19:42:39,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:42:39,880 INFO L93 Difference]: Finished difference Result 31498 states and 41930 transitions. [2021-01-06 19:42:39,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 19:42:39,880 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2021-01-06 19:42:39,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:42:39,929 INFO L225 Difference]: With dead ends: 31498 [2021-01-06 19:42:39,930 INFO L226 Difference]: Without dead ends: 26584 [2021-01-06 19:42:39,943 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 19:42:39,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26584 states. [2021-01-06 19:42:41,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26584 to 21441. [2021-01-06 19:42:41,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21441 states. [2021-01-06 19:42:41,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21441 states to 21441 states and 28219 transitions. [2021-01-06 19:42:41,219 INFO L78 Accepts]: Start accepts. Automaton has 21441 states and 28219 transitions. Word has length 67 [2021-01-06 19:42:41,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:42:41,219 INFO L481 AbstractCegarLoop]: Abstraction has 21441 states and 28219 transitions. [2021-01-06 19:42:41,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 19:42:41,220 INFO L276 IsEmpty]: Start isEmpty. Operand 21441 states and 28219 transitions. [2021-01-06 19:42:41,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-01-06 19:42:41,224 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:42:41,225 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 19:42:41,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-01-06 19:42:41,225 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:42:41,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:42:41,226 INFO L82 PathProgramCache]: Analyzing trace with hash -2062316443, now seen corresponding path program 1 times [2021-01-06 19:42:41,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:42:41,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139953141] [2021-01-06 19:42:41,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:42:41,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:42:41,301 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 19:42:41,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139953141] [2021-01-06 19:42:41,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:42:41,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 19:42:41,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637093852] [2021-01-06 19:42:41,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 19:42:41,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:42:41,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 19:42:41,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 19:42:41,303 INFO L87 Difference]: Start difference. First operand 21441 states and 28219 transitions. Second operand 6 states. [2021-01-06 19:42:43,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:42:43,204 INFO L93 Difference]: Finished difference Result 63852 states and 83875 transitions. [2021-01-06 19:42:43,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 19:42:43,204 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2021-01-06 19:42:43,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:42:43,259 INFO L225 Difference]: With dead ends: 63852 [2021-01-06 19:42:43,259 INFO L226 Difference]: Without dead ends: 42440 [2021-01-06 19:42:43,288 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 19:42:43,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42440 states. [2021-01-06 19:42:45,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42440 to 37717. [2021-01-06 19:42:45,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37717 states. [2021-01-06 19:42:45,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37717 states to 37717 states and 49117 transitions. [2021-01-06 19:42:45,467 INFO L78 Accepts]: Start accepts. Automaton has 37717 states and 49117 transitions. Word has length 67 [2021-01-06 19:42:45,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:42:45,467 INFO L481 AbstractCegarLoop]: Abstraction has 37717 states and 49117 transitions. [2021-01-06 19:42:45,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 19:42:45,468 INFO L276 IsEmpty]: Start isEmpty. Operand 37717 states and 49117 transitions. [2021-01-06 19:42:45,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-01-06 19:42:45,475 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:42:45,475 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 19:42:45,476 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-01-06 19:42:45,476 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:42:45,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:42:45,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1809004131, now seen corresponding path program 1 times [2021-01-06 19:42:45,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:42:45,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811438741] [2021-01-06 19:42:45,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:42:45,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:42:45,565 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 19:42:45,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811438741] [2021-01-06 19:42:45,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:42:45,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 19:42:45,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302680893] [2021-01-06 19:42:45,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 19:42:45,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:42:45,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 19:42:45,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-01-06 19:42:45,568 INFO L87 Difference]: Start difference. First operand 37717 states and 49117 transitions. Second operand 5 states. [2021-01-06 19:42:48,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:42:48,461 INFO L93 Difference]: Finished difference Result 63451 states and 83682 transitions. [2021-01-06 19:42:48,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 19:42:48,461 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2021-01-06 19:42:48,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:42:48,520 INFO L225 Difference]: With dead ends: 63451 [2021-01-06 19:42:48,520 INFO L226 Difference]: Without dead ends: 54266 [2021-01-06 19:42:48,533 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 19:42:48,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54266 states. [2021-01-06 19:42:51,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54266 to 45348. [2021-01-06 19:42:51,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45348 states. [2021-01-06 19:42:51,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45348 states to 45348 states and 59082 transitions. [2021-01-06 19:42:51,149 INFO L78 Accepts]: Start accepts. Automaton has 45348 states and 59082 transitions. Word has length 67 [2021-01-06 19:42:51,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:42:51,150 INFO L481 AbstractCegarLoop]: Abstraction has 45348 states and 59082 transitions. [2021-01-06 19:42:51,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 19:42:51,150 INFO L276 IsEmpty]: Start isEmpty. Operand 45348 states and 59082 transitions. [2021-01-06 19:42:51,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-01-06 19:42:51,156 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:42:51,157 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 19:42:51,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-01-06 19:42:51,157 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:42:51,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:42:51,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1321378519, now seen corresponding path program 1 times [2021-01-06 19:42:51,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:42:51,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367580849] [2021-01-06 19:42:51,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:42:51,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:42:51,239 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 19:42:51,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367580849] [2021-01-06 19:42:51,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:42:51,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 19:42:51,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767261791] [2021-01-06 19:42:51,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 19:42:51,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:42:51,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 19:42:51,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-01-06 19:42:51,242 INFO L87 Difference]: Start difference. First operand 45348 states and 59082 transitions. Second operand 5 states. [2021-01-06 19:42:54,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:42:54,506 INFO L93 Difference]: Finished difference Result 74740 states and 98337 transitions. [2021-01-06 19:42:54,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 19:42:54,506 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2021-01-06 19:42:54,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:42:54,575 INFO L225 Difference]: With dead ends: 74740 [2021-01-06 19:42:54,576 INFO L226 Difference]: Without dead ends: 61614 [2021-01-06 19:42:54,594 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 19:42:54,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61614 states. [2021-01-06 19:42:57,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61614 to 54856. [2021-01-06 19:42:57,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54856 states. [2021-01-06 19:42:57,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54856 states to 54856 states and 71377 transitions. [2021-01-06 19:42:57,801 INFO L78 Accepts]: Start accepts. Automaton has 54856 states and 71377 transitions. Word has length 68 [2021-01-06 19:42:57,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:42:57,801 INFO L481 AbstractCegarLoop]: Abstraction has 54856 states and 71377 transitions. [2021-01-06 19:42:57,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 19:42:57,802 INFO L276 IsEmpty]: Start isEmpty. Operand 54856 states and 71377 transitions. [2021-01-06 19:42:57,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-01-06 19:42:57,810 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:42:57,811 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 19:42:57,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-01-06 19:42:57,811 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:42:57,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:42:57,812 INFO L82 PathProgramCache]: Analyzing trace with hash -624325544, now seen corresponding path program 1 times [2021-01-06 19:42:57,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:42:57,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967856020] [2021-01-06 19:42:57,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:42:57,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:42:57,947 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 19:42:57,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967856020] [2021-01-06 19:42:57,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894282357] [2021-01-06 19:42:57,948 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 19:42:58,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:42:58,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 6 conjunts are in the unsatisfiable core [2021-01-06 19:42:58,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:42:58,269 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 19:42:58,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:42:58,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-01-06 19:42:58,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927812496] [2021-01-06 19:42:58,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-06 19:42:58,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:42:58,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-06 19:42:58,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-01-06 19:42:58,276 INFO L87 Difference]: Start difference. First operand 54856 states and 71377 transitions. Second operand 11 states. [2021-01-06 19:43:04,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:43:04,554 INFO L93 Difference]: Finished difference Result 143276 states and 186312 transitions. [2021-01-06 19:43:04,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 19:43:04,555 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 71 [2021-01-06 19:43:04,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:43:04,712 INFO L225 Difference]: With dead ends: 143276 [2021-01-06 19:43:04,713 INFO L226 Difference]: Without dead ends: 107653 [2021-01-06 19:43:04,751 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 19:43:04,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107653 states. [2021-01-06 19:43:08,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107653 to 61926. [2021-01-06 19:43:08,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61926 states. [2021-01-06 19:43:09,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61926 states to 61926 states and 80743 transitions. [2021-01-06 19:43:09,002 INFO L78 Accepts]: Start accepts. Automaton has 61926 states and 80743 transitions. Word has length 71 [2021-01-06 19:43:09,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:43:09,002 INFO L481 AbstractCegarLoop]: Abstraction has 61926 states and 80743 transitions. [2021-01-06 19:43:09,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-06 19:43:09,003 INFO L276 IsEmpty]: Start isEmpty. Operand 61926 states and 80743 transitions. [2021-01-06 19:43:09,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-01-06 19:43:09,013 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:43:09,013 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 19:43:09,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-01-06 19:43:09,229 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:43:09,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:43:09,230 INFO L82 PathProgramCache]: Analyzing trace with hash -85511602, now seen corresponding path program 1 times [2021-01-06 19:43:09,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:43:09,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056131588] [2021-01-06 19:43:09,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:43:09,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:09,335 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 19:43:09,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056131588] [2021-01-06 19:43:09,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105766930] [2021-01-06 19:43:09,336 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 19:43:09,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:09,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 6 conjunts are in the unsatisfiable core [2021-01-06 19:43:09,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:43:09,622 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 19:43:09,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:43:09,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-01-06 19:43:09,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730106743] [2021-01-06 19:43:09,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-06 19:43:09,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:43:09,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-06 19:43:09,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-01-06 19:43:09,625 INFO L87 Difference]: Start difference. First operand 61926 states and 80743 transitions. Second operand 11 states. [2021-01-06 19:43:16,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:43:16,523 INFO L93 Difference]: Finished difference Result 150362 states and 195387 transitions. [2021-01-06 19:43:16,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 19:43:16,524 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 71 [2021-01-06 19:43:16,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:43:16,686 INFO L225 Difference]: With dead ends: 150362 [2021-01-06 19:43:16,686 INFO L226 Difference]: Without dead ends: 108655 [2021-01-06 19:43:16,881 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 19:43:16,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108655 states. [2021-01-06 19:43:21,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108655 to 68738. [2021-01-06 19:43:21,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68738 states. [2021-01-06 19:43:21,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68738 states to 68738 states and 89472 transitions. [2021-01-06 19:43:21,446 INFO L78 Accepts]: Start accepts. Automaton has 68738 states and 89472 transitions. Word has length 71 [2021-01-06 19:43:21,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:43:21,446 INFO L481 AbstractCegarLoop]: Abstraction has 68738 states and 89472 transitions. [2021-01-06 19:43:21,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-06 19:43:21,446 INFO L276 IsEmpty]: Start isEmpty. Operand 68738 states and 89472 transitions. [2021-01-06 19:43:21,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-01-06 19:43:21,452 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:43:21,452 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 19:43:21,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:43:21,659 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:43:21,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:43:21,660 INFO L82 PathProgramCache]: Analyzing trace with hash 619033760, now seen corresponding path program 1 times [2021-01-06 19:43:21,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:43:21,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207724253] [2021-01-06 19:43:21,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:43:21,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:21,937 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 19:43:21,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207724253] [2021-01-06 19:43:21,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876329855] [2021-01-06 19:43:21,940 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 19:43:22,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:22,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 6 conjunts are in the unsatisfiable core [2021-01-06 19:43:22,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:43:22,195 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 19:43:22,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:43:22,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-01-06 19:43:22,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416403545] [2021-01-06 19:43:22,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-06 19:43:22,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:43:22,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-06 19:43:22,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-01-06 19:43:22,197 INFO L87 Difference]: Start difference. First operand 68738 states and 89472 transitions. Second operand 11 states. [2021-01-06 19:43:28,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:43:28,346 INFO L93 Difference]: Finished difference Result 141814 states and 183968 transitions. [2021-01-06 19:43:28,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 19:43:28,347 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 72 [2021-01-06 19:43:28,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:43:28,479 INFO L225 Difference]: With dead ends: 141814 [2021-01-06 19:43:28,479 INFO L226 Difference]: Without dead ends: 94841 [2021-01-06 19:43:28,518 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 19:43:28,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94841 states. [2021-01-06 19:43:33,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94841 to 69691. [2021-01-06 19:43:33,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69691 states. [2021-01-06 19:43:33,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69691 states to 69691 states and 90311 transitions. [2021-01-06 19:43:33,605 INFO L78 Accepts]: Start accepts. Automaton has 69691 states and 90311 transitions. Word has length 72 [2021-01-06 19:43:33,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:43:33,606 INFO L481 AbstractCegarLoop]: Abstraction has 69691 states and 90311 transitions. [2021-01-06 19:43:33,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-06 19:43:33,606 INFO L276 IsEmpty]: Start isEmpty. Operand 69691 states and 90311 transitions. [2021-01-06 19:43:33,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-01-06 19:43:33,616 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:43:33,617 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 19:43:33,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:43:33,977 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:43:33,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:43:33,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1838305115, now seen corresponding path program 1 times [2021-01-06 19:43:33,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:43:33,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821029197] [2021-01-06 19:43:33,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:43:34,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:34,230 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 19:43:34,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821029197] [2021-01-06 19:43:34,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970688749] [2021-01-06 19:43:34,231 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 19:43:34,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:34,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-06 19:43:34,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:43:34,482 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 19:43:34,817 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 19:43:34,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:43:34,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-01-06 19:43:34,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512126058] [2021-01-06 19:43:34,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-06 19:43:34,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:43:34,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-06 19:43:34,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2021-01-06 19:43:34,820 INFO L87 Difference]: Start difference. First operand 69691 states and 90311 transitions. Second operand 17 states. [2021-01-06 19:43:47,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:43:47,698 INFO L93 Difference]: Finished difference Result 214609 states and 276498 transitions. [2021-01-06 19:43:47,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-01-06 19:43:47,699 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 72 [2021-01-06 19:43:47,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:43:47,936 INFO L225 Difference]: With dead ends: 214609 [2021-01-06 19:43:47,936 INFO L226 Difference]: Without dead ends: 144932 [2021-01-06 19:43:48,002 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=430, Invalid=1210, Unknown=0, NotChecked=0, Total=1640 [2021-01-06 19:43:48,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144932 states. [2021-01-06 19:43:55,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144932 to 85522. [2021-01-06 19:43:55,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85522 states. [2021-01-06 19:43:55,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85522 states to 85522 states and 110647 transitions. [2021-01-06 19:43:55,220 INFO L78 Accepts]: Start accepts. Automaton has 85522 states and 110647 transitions. Word has length 72 [2021-01-06 19:43:55,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:43:55,221 INFO L481 AbstractCegarLoop]: Abstraction has 85522 states and 110647 transitions. [2021-01-06 19:43:55,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-01-06 19:43:55,221 INFO L276 IsEmpty]: Start isEmpty. Operand 85522 states and 110647 transitions. [2021-01-06 19:43:55,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-01-06 19:43:55,227 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:43:55,227 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 19:43:55,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-01-06 19:43:55,428 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:43:55,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:43:55,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1146280427, now seen corresponding path program 1 times [2021-01-06 19:43:55,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:43:55,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288642870] [2021-01-06 19:43:55,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:43:55,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:55,639 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 19:43:55,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288642870] [2021-01-06 19:43:55,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056297671] [2021-01-06 19:43:55,640 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 19:43:55,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:55,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-06 19:43:55,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:43:56,193 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 19:43:56,456 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 34 [2021-01-06 19:43:56,873 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 19:43:56,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:43:56,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13] total 21 [2021-01-06 19:43:56,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477684830] [2021-01-06 19:43:56,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-01-06 19:43:56,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:43:56,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-01-06 19:43:56,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2021-01-06 19:43:56,875 INFO L87 Difference]: Start difference. First operand 85522 states and 110647 transitions. Second operand 21 states. [2021-01-06 19:43:57,844 WARN L197 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2021-01-06 19:43:58,565 WARN L197 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2021-01-06 19:43:58,761 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-01-06 19:43:59,309 WARN L197 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2021-01-06 19:43:59,538 WARN L197 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-01-06 19:44:00,000 WARN L197 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-01-06 19:44:00,321 WARN L197 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-01-06 19:44:00,906 WARN L197 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2021-01-06 19:44:01,196 WARN L197 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2021-01-06 19:44:01,444 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2021-01-06 19:44:01,933 WARN L197 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-01-06 19:44:02,936 WARN L197 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2021-01-06 19:44:03,196 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-01-06 19:44:03,994 WARN L197 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-01-06 19:44:04,417 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2021-01-06 19:44:04,885 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-01-06 19:44:05,836 WARN L197 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2021-01-06 19:44:06,035 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2021-01-06 19:44:06,550 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2021-01-06 19:44:07,333 WARN L197 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2021-01-06 19:44:07,704 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2021-01-06 19:44:07,902 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2021-01-06 19:44:08,743 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2021-01-06 19:44:09,098 WARN L197 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-01-06 19:44:09,353 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-01-06 19:44:09,902 WARN L197 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2021-01-06 19:44:10,208 WARN L197 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2021-01-06 19:44:10,970 WARN L197 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2021-01-06 19:44:11,467 WARN L197 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2021-01-06 19:44:11,795 WARN L197 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2021-01-06 19:44:12,041 WARN L197 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2021-01-06 19:44:12,306 WARN L197 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2021-01-06 19:44:12,593 WARN L197 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2021-01-06 19:44:12,865 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2021-01-06 19:44:13,180 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2021-01-06 19:44:14,948 WARN L197 SmtUtils]: Spent 613.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-01-06 19:44:15,498 WARN L197 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2021-01-06 19:44:16,027 WARN L197 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-01-06 19:44:16,821 WARN L197 SmtUtils]: Spent 549.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 82 [2021-01-06 19:44:17,428 WARN L197 SmtUtils]: Spent 531.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2021-01-06 19:44:18,013 WARN L197 SmtUtils]: Spent 487.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 82 [2021-01-06 19:44:18,614 WARN L197 SmtUtils]: Spent 504.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2021-01-06 19:44:19,016 WARN L197 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-01-06 19:44:19,208 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2021-01-06 19:44:19,458 WARN L197 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-01-06 19:44:20,249 WARN L197 SmtUtils]: Spent 472.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2021-01-06 19:44:20,900 WARN L197 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2021-01-06 19:44:21,355 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2021-01-06 19:44:21,596 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2021-01-06 19:44:21,838 WARN L197 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2021-01-06 19:44:22,190 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 49 [2021-01-06 19:44:22,729 WARN L197 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2021-01-06 19:44:23,903 WARN L197 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2021-01-06 19:44:24,209 WARN L197 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2021-01-06 19:44:24,532 WARN L197 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2021-01-06 19:44:24,812 WARN L197 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2021-01-06 19:44:25,206 WARN L197 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2021-01-06 19:44:25,652 WARN L197 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2021-01-06 19:44:25,855 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2021-01-06 19:44:26,451 WARN L197 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2021-01-06 19:44:27,054 WARN L197 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2021-01-06 19:44:27,271 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2021-01-06 19:44:27,858 WARN L197 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2021-01-06 19:44:28,125 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2021-01-06 19:44:29,191 WARN L197 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2021-01-06 19:44:29,447 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 39 [2021-01-06 19:44:30,062 WARN L197 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-01-06 19:44:30,534 WARN L197 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2021-01-06 19:44:30,856 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2021-01-06 19:44:31,575 WARN L197 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-01-06 19:44:32,394 WARN L197 SmtUtils]: Spent 508.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-01-06 19:44:33,025 WARN L197 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2021-01-06 19:44:33,459 WARN L197 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2021-01-06 19:44:34,050 WARN L197 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2021-01-06 19:44:34,518 WARN L197 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2021-01-06 19:44:34,745 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2021-01-06 19:44:35,078 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2021-01-06 19:44:35,463 WARN L197 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2021-01-06 19:44:35,790 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 39 [2021-01-06 19:44:36,718 WARN L197 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2021-01-06 19:44:37,314 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2021-01-06 19:44:38,100 WARN L197 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-01-06 19:44:38,421 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2021-01-06 19:44:39,560 WARN L197 SmtUtils]: Spent 557.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-01-06 19:44:39,986 WARN L197 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2021-01-06 19:44:41,111 WARN L197 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2021-01-06 19:44:41,856 WARN L197 SmtUtils]: Spent 633.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2021-01-06 19:44:42,108 WARN L197 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2021-01-06 19:44:42,386 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-01-06 19:44:42,826 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-01-06 19:44:43,485 WARN L197 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2021-01-06 19:44:44,079 WARN L197 SmtUtils]: Spent 508.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2021-01-06 19:44:45,602 WARN L197 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 95 DAG size of output: 93 [2021-01-06 19:44:46,225 WARN L197 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2021-01-06 19:44:46,620 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-01-06 19:44:46,889 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2021-01-06 19:44:47,287 WARN L197 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2021-01-06 19:44:47,722 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2021-01-06 19:44:48,009 WARN L197 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2021-01-06 19:44:49,658 WARN L197 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 88 DAG size of output: 86 [2021-01-06 19:44:50,283 WARN L197 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-01-06 19:44:50,739 WARN L197 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-01-06 19:44:51,250 WARN L197 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2021-01-06 19:44:51,825 WARN L197 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2021-01-06 19:44:53,540 WARN L197 SmtUtils]: Spent 768.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2021-01-06 19:44:54,017 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-01-06 19:44:54,765 WARN L197 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2021-01-06 19:44:55,149 WARN L197 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2021-01-06 19:44:55,789 WARN L197 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2021-01-06 19:44:56,375 WARN L197 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2021-01-06 19:44:57,063 WARN L197 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2021-01-06 19:44:57,584 WARN L197 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2021-01-06 19:44:58,002 WARN L197 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2021-01-06 19:44:59,770 WARN L197 SmtUtils]: Spent 1.55 s on a formula simplification. DAG size of input: 98 DAG size of output: 96 [2021-01-06 19:45:01,494 WARN L197 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2021-01-06 19:45:02,872 WARN L197 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 87 DAG size of output: 84 [2021-01-06 19:45:03,677 WARN L197 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2021-01-06 19:45:04,420 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2021-01-06 19:45:04,713 WARN L197 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2021-01-06 19:45:05,509 WARN L197 SmtUtils]: Spent 574.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2021-01-06 19:45:05,893 WARN L197 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2021-01-06 19:45:07,068 WARN L197 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2021-01-06 19:45:08,571 WARN L197 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 90 DAG size of output: 87 [2021-01-06 19:45:09,296 WARN L197 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-01-06 19:45:11,270 WARN L197 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-01-06 19:45:11,504 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 29 [2021-01-06 19:45:12,061 WARN L197 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2021-01-06 19:45:12,692 WARN L197 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2021-01-06 19:45:12,899 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 30 [2021-01-06 19:45:13,207 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 32 [2021-01-06 19:45:13,823 WARN L197 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2021-01-06 19:45:14,257 WARN L197 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2021-01-06 19:45:14,760 WARN L197 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2021-01-06 19:45:14,997 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 32 [2021-01-06 19:45:15,648 WARN L197 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2021-01-06 19:45:16,151 WARN L197 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2021-01-06 19:45:16,717 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2021-01-06 19:45:17,053 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 35 [2021-01-06 19:45:17,504 WARN L197 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-01-06 19:45:18,087 WARN L197 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2021-01-06 19:45:18,869 WARN L197 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2021-01-06 19:45:20,256 WARN L197 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-01-06 19:45:20,851 WARN L197 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2021-01-06 19:45:21,324 WARN L197 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-01-06 19:45:21,956 WARN L197 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2021-01-06 19:45:23,051 WARN L197 SmtUtils]: Spent 948.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2021-01-06 19:45:24,284 WARN L197 SmtUtils]: Spent 830.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2021-01-06 19:45:24,979 WARN L197 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2021-01-06 19:45:26,247 WARN L197 SmtUtils]: Spent 947.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-01-06 19:45:27,441 WARN L197 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-01-06 19:45:29,668 WARN L197 SmtUtils]: Spent 613.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2021-01-06 19:45:31,356 WARN L197 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-01-06 19:45:31,732 WARN L197 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 30 [2021-01-06 19:45:32,578 WARN L197 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2021-01-06 19:45:33,242 WARN L197 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2021-01-06 19:45:34,873 WARN L197 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-01-06 19:45:35,128 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2021-01-06 19:45:35,832 WARN L197 SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2021-01-06 19:45:36,372 WARN L197 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2021-01-06 19:45:38,370 WARN L197 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 90 DAG size of output: 80 [2021-01-06 19:45:39,592 WARN L197 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2021-01-06 19:45:41,036 WARN L197 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-01-06 19:45:42,436 WARN L197 SmtUtils]: Spent 484.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2021-01-06 19:45:42,965 WARN L197 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2021-01-06 19:45:45,006 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2021-01-06 19:45:46,761 WARN L197 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30 [2021-01-06 19:45:47,640 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 23 [2021-01-06 19:45:49,880 WARN L197 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2021-01-06 19:45:50,185 WARN L197 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2021-01-06 19:45:50,971 WARN L197 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2021-01-06 19:45:52,737 WARN L197 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2021-01-06 19:45:54,250 WARN L197 SmtUtils]: Spent 985.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2021-01-06 19:45:55,687 WARN L197 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-01-06 19:45:56,700 WARN L197 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-01-06 19:45:58,096 WARN L197 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-01-06 19:45:58,845 WARN L197 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2021-01-06 19:46:02,968 WARN L197 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2021-01-06 19:46:05,231 WARN L197 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2021-01-06 19:46:17,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:46:17,487 INFO L93 Difference]: Finished difference Result 441820 states and 569586 transitions. [2021-01-06 19:46:17,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 286 states. [2021-01-06 19:46:17,494 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 72 [2021-01-06 19:46:17,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:46:18,227 INFO L225 Difference]: With dead ends: 441820 [2021-01-06 19:46:18,228 INFO L226 Difference]: Without dead ends: 373440 [2021-01-06 19:46:18,382 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 302 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42225 ImplicationChecksByTransitivity, 88.4s TimeCoverageRelationStatistics Valid=9604, Invalid=82508, Unknown=0, NotChecked=0, Total=92112 [2021-01-06 19:46:18,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373440 states.