/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_floodmax.3.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 09:43:22,457 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 09:43:22,460 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 09:43:22,517 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 09:43:22,517 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 09:43:22,522 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 09:43:22,527 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 09:43:22,533 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 09:43:22,537 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 09:43:22,544 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 09:43:22,548 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 09:43:22,550 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 09:43:22,550 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 09:43:22,553 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 09:43:22,555 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 09:43:22,557 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 09:43:22,578 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 09:43:22,580 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 09:43:22,582 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 09:43:22,585 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 09:43:22,586 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 09:43:22,588 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 09:43:22,589 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 09:43:22,590 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 09:43:22,593 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 09:43:22,594 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 09:43:22,594 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 09:43:22,595 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 09:43:22,596 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 09:43:22,597 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 09:43:22,598 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 09:43:22,599 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 09:43:22,600 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 09:43:22,601 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 09:43:22,602 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 09:43:22,602 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 09:43:22,603 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 09:43:22,603 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 09:43:22,604 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 09:43:22,605 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 09:43:22,606 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 09:43:22,607 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 09:43:22,633 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 09:43:22,634 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 09:43:22,635 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 09:43:22,636 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 09:43:22,636 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 09:43:22,636 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 09:43:22,636 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 09:43:22,637 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 09:43:22,637 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 09:43:22,637 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 09:43:22,637 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 09:43:22,638 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 09:43:22,638 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 09:43:22,638 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 09:43:22,638 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 09:43:22,639 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 09:43:22,639 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 09:43:22,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 09:43:22,640 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 09:43:22,640 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 09:43:22,640 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 09:43:22,640 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 09:43:22,641 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 09:43:22,641 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 09:43:22,642 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 09:43:22,642 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 09:43:23,123 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 09:43:23,154 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 09:43:23,158 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 09:43:23,160 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 09:43:23,161 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 09:43:23,162 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.ufo.UNBOUNDED.pals.c [2020-12-23 09:43:23,244 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/55e155655/cb912068771f4cbcad3c55a67e28f8a7/FLAGece0d38b9 [2020-12-23 09:43:23,889 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 09:43:23,890 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.ufo.UNBOUNDED.pals.c [2020-12-23 09:43:23,907 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/55e155655/cb912068771f4cbcad3c55a67e28f8a7/FLAGece0d38b9 [2020-12-23 09:43:24,241 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/55e155655/cb912068771f4cbcad3c55a67e28f8a7 [2020-12-23 09:43:24,244 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 09:43:24,247 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 09:43:24,254 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 09:43:24,254 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 09:43:24,259 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 09:43:24,261 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 09:43:24" (1/1) ... [2020-12-23 09:43:24,264 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26ab09f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:43:24, skipping insertion in model container [2020-12-23 09:43:24,265 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 09:43:24" (1/1) ... [2020-12-23 09:43:24,280 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 09:43:24,356 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r121~0,] left hand side expression in assignment: lhs: VariableLHS[~r131~0,] left hand side expression in assignment: lhs: VariableLHS[~r211~0,] left hand side expression in assignment: lhs: VariableLHS[~r231~0,] left hand side expression in assignment: lhs: VariableLHS[~r311~0,] left hand side expression in assignment: lhs: VariableLHS[~r321~0,] 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[~r122~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~r132~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~r212~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~r232~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~r312~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~r322~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] 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[~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[~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[~ep12~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep13~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep21~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep23~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep31~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep32~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p12_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p12_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~c1~0,] [2020-12-23 09:43:24,695 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_floodmax.3.ufo.UNBOUNDED.pals.c[12966,12979] [2020-12-23 09:43:24,699 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 09:43:24,711 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r121~0,] left hand side expression in assignment: lhs: VariableLHS[~r131~0,] left hand side expression in assignment: lhs: VariableLHS[~r211~0,] left hand side expression in assignment: lhs: VariableLHS[~r231~0,] left hand side expression in assignment: lhs: VariableLHS[~r311~0,] left hand side expression in assignment: lhs: VariableLHS[~r321~0,] 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[~r122~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~r132~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~r212~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~r232~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~r312~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~r322~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] 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[~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[~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[~ep12~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep13~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep21~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep23~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep31~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep32~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p12_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p12_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~c1~0,] [2020-12-23 09:43:24,838 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_floodmax.3.ufo.UNBOUNDED.pals.c[12966,12979] [2020-12-23 09:43:24,839 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 09:43:24,860 INFO L208 MainTranslator]: Completed translation [2020-12-23 09:43:24,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:43:24 WrapperNode [2020-12-23 09:43:24,861 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 09:43:24,862 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 09:43:24,863 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 09:43:24,863 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 09:43:24,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:43:24" (1/1) ... [2020-12-23 09:43:24,887 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:43:24" (1/1) ... [2020-12-23 09:43:24,937 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 09:43:24,938 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 09:43:24,939 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 09:43:24,939 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 09:43:24,950 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:43:24" (1/1) ... [2020-12-23 09:43:24,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:43:24" (1/1) ... [2020-12-23 09:43:24,954 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:43:24" (1/1) ... [2020-12-23 09:43:24,955 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:43:24" (1/1) ... [2020-12-23 09:43:24,965 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:43:24" (1/1) ... [2020-12-23 09:43:24,977 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:43:24" (1/1) ... [2020-12-23 09:43:24,980 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:43:24" (1/1) ... [2020-12-23 09:43:24,985 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 09:43:24,986 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 09:43:24,987 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 09:43:24,987 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 09:43:24,988 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:43:24" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 09:43:25,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 09:43:25,128 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 09:43:25,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 09:43:25,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 09:43:26,147 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 09:43:26,147 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2020-12-23 09:43:26,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 09:43:26 BoogieIcfgContainer [2020-12-23 09:43:26,150 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 09:43:26,152 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 09:43:26,152 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 09:43:26,156 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 09:43:26,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 09:43:24" (1/3) ... [2020-12-23 09:43:26,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46e89b11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 09:43:26, skipping insertion in model container [2020-12-23 09:43:26,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:43:24" (2/3) ... [2020-12-23 09:43:26,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46e89b11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 09:43:26, skipping insertion in model container [2020-12-23 09:43:26,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 09:43:26" (3/3) ... [2020-12-23 09:43:26,160 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.ufo.UNBOUNDED.pals.c [2020-12-23 09:43:26,167 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 09:43:26,173 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 09:43:26,193 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 09:43:26,223 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 09:43:26,224 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 09:43:26,224 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 09:43:26,224 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 09:43:26,224 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 09:43:26,224 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 09:43:26,225 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 09:43:26,225 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 09:43:26,244 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states. [2020-12-23 09:43:26,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-23 09:43:26,253 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:43:26,254 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] [2020-12-23 09:43:26,255 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:43:26,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:43:26,261 INFO L82 PathProgramCache]: Analyzing trace with hash 298975739, now seen corresponding path program 1 times [2020-12-23 09:43:26,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:43:26,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633113337] [2020-12-23 09:43:26,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:43:26,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:43:26,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:43:26,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633113337] [2020-12-23 09:43:26,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:43:26,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 09:43:26,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202760686] [2020-12-23 09:43:26,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 09:43:26,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:43:26,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 09:43:26,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 09:43:26,650 INFO L87 Difference]: Start difference. First operand 136 states. Second operand 2 states. [2020-12-23 09:43:26,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:43:26,706 INFO L93 Difference]: Finished difference Result 212 states and 365 transitions. [2020-12-23 09:43:26,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 09:43:26,707 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 37 [2020-12-23 09:43:26,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:43:26,720 INFO L225 Difference]: With dead ends: 212 [2020-12-23 09:43:26,720 INFO L226 Difference]: Without dead ends: 132 [2020-12-23 09:43:26,724 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 09:43:26,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-12-23 09:43:26,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2020-12-23 09:43:26,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-12-23 09:43:26,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 228 transitions. [2020-12-23 09:43:26,782 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 228 transitions. Word has length 37 [2020-12-23 09:43:26,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:43:26,783 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 228 transitions. [2020-12-23 09:43:26,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 09:43:26,783 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 228 transitions. [2020-12-23 09:43:26,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-23 09:43:26,785 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:43:26,785 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] [2020-12-23 09:43:26,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 09:43:26,786 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:43:26,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:43:26,787 INFO L82 PathProgramCache]: Analyzing trace with hash -518672711, now seen corresponding path program 1 times [2020-12-23 09:43:26,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:43:26,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780312408] [2020-12-23 09:43:26,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:43:26,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:43:26,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:43:26,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780312408] [2020-12-23 09:43:26,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:43:26,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:43:26,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749067396] [2020-12-23 09:43:26,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:43:26,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:43:26,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:43:26,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:43:26,934 INFO L87 Difference]: Start difference. First operand 132 states and 228 transitions. Second operand 5 states. [2020-12-23 09:43:27,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:43:27,170 INFO L93 Difference]: Finished difference Result 211 states and 358 transitions. [2020-12-23 09:43:27,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 09:43:27,171 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-12-23 09:43:27,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:43:27,174 INFO L225 Difference]: With dead ends: 211 [2020-12-23 09:43:27,174 INFO L226 Difference]: Without dead ends: 132 [2020-12-23 09:43:27,178 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 [2020-12-23 09:43:27,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-12-23 09:43:27,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2020-12-23 09:43:27,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-12-23 09:43:27,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 201 transitions. [2020-12-23 09:43:27,222 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 201 transitions. Word has length 37 [2020-12-23 09:43:27,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:43:27,223 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 201 transitions. [2020-12-23 09:43:27,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:43:27,224 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 201 transitions. [2020-12-23 09:43:27,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-23 09:43:27,233 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:43:27,234 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:43:27,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 09:43:27,235 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:43:27,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:43:27,240 INFO L82 PathProgramCache]: Analyzing trace with hash -707453694, now seen corresponding path program 1 times [2020-12-23 09:43:27,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:43:27,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452193541] [2020-12-23 09:43:27,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:43:27,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:43:27,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:43:27,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452193541] [2020-12-23 09:43:27,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:43:27,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:43:27,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391120661] [2020-12-23 09:43:27,406 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:43:27,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:43:27,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:43:27,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:43:27,408 INFO L87 Difference]: Start difference. First operand 132 states and 201 transitions. Second operand 3 states. [2020-12-23 09:43:27,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:43:27,510 INFO L93 Difference]: Finished difference Result 273 states and 436 transitions. [2020-12-23 09:43:27,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:43:27,511 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2020-12-23 09:43:27,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:43:27,515 INFO L225 Difference]: With dead ends: 273 [2020-12-23 09:43:27,515 INFO L226 Difference]: Without dead ends: 198 [2020-12-23 09:43:27,516 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:43:27,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-12-23 09:43:27,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 195. [2020-12-23 09:43:27,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-12-23 09:43:27,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 302 transitions. [2020-12-23 09:43:27,538 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 302 transitions. Word has length 63 [2020-12-23 09:43:27,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:43:27,538 INFO L481 AbstractCegarLoop]: Abstraction has 195 states and 302 transitions. [2020-12-23 09:43:27,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:43:27,539 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 302 transitions. [2020-12-23 09:43:27,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-23 09:43:27,542 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:43:27,542 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:43:27,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 09:43:27,543 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:43:27,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:43:27,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1995563601, now seen corresponding path program 1 times [2020-12-23 09:43:27,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:43:27,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115483451] [2020-12-23 09:43:27,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:43:27,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:43:27,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:43:27,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115483451] [2020-12-23 09:43:27,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:43:27,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:43:27,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362254923] [2020-12-23 09:43:27,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:43:27,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:43:27,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:43:27,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:43:27,728 INFO L87 Difference]: Start difference. First operand 195 states and 302 transitions. Second operand 3 states. [2020-12-23 09:43:27,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:43:27,821 INFO L93 Difference]: Finished difference Result 457 states and 730 transitions. [2020-12-23 09:43:27,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:43:27,822 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2020-12-23 09:43:27,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:43:27,830 INFO L225 Difference]: With dead ends: 457 [2020-12-23 09:43:27,830 INFO L226 Difference]: Without dead ends: 319 [2020-12-23 09:43:27,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:43:27,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2020-12-23 09:43:27,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 315. [2020-12-23 09:43:27,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2020-12-23 09:43:27,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 496 transitions. [2020-12-23 09:43:27,878 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 496 transitions. Word has length 65 [2020-12-23 09:43:27,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:43:27,878 INFO L481 AbstractCegarLoop]: Abstraction has 315 states and 496 transitions. [2020-12-23 09:43:27,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:43:27,879 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 496 transitions. [2020-12-23 09:43:27,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-23 09:43:27,881 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:43:27,881 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:43:27,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 09:43:27,882 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:43:27,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:43:27,883 INFO L82 PathProgramCache]: Analyzing trace with hash -2137075392, now seen corresponding path program 1 times [2020-12-23 09:43:27,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:43:27,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048524566] [2020-12-23 09:43:27,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:43:27,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:43:27,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:43:27,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048524566] [2020-12-23 09:43:27,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:43:27,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:43:27,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777791356] [2020-12-23 09:43:27,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:43:27,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:43:27,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:43:27,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:43:27,984 INFO L87 Difference]: Start difference. First operand 315 states and 496 transitions. Second operand 3 states. [2020-12-23 09:43:28,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:43:28,045 INFO L93 Difference]: Finished difference Result 803 states and 1286 transitions. [2020-12-23 09:43:28,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:43:28,046 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2020-12-23 09:43:28,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:43:28,050 INFO L225 Difference]: With dead ends: 803 [2020-12-23 09:43:28,051 INFO L226 Difference]: Without dead ends: 545 [2020-12-23 09:43:28,052 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:43:28,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2020-12-23 09:43:28,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 539. [2020-12-23 09:43:28,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2020-12-23 09:43:28,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 852 transitions. [2020-12-23 09:43:28,086 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 852 transitions. Word has length 67 [2020-12-23 09:43:28,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:43:28,087 INFO L481 AbstractCegarLoop]: Abstraction has 539 states and 852 transitions. [2020-12-23 09:43:28,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:43:28,087 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 852 transitions. [2020-12-23 09:43:28,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-23 09:43:28,089 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:43:28,090 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:43:28,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 09:43:28,090 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:43:28,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:43:28,091 INFO L82 PathProgramCache]: Analyzing trace with hash -544230961, now seen corresponding path program 1 times [2020-12-23 09:43:28,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:43:28,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006726885] [2020-12-23 09:43:28,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:43:28,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:43:28,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:43:28,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006726885] [2020-12-23 09:43:28,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:43:28,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:43:28,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563290427] [2020-12-23 09:43:28,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:43:28,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:43:28,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:43:28,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:43:28,280 INFO L87 Difference]: Start difference. First operand 539 states and 852 transitions. Second operand 5 states. [2020-12-23 09:43:28,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:43:28,593 INFO L93 Difference]: Finished difference Result 2303 states and 3746 transitions. [2020-12-23 09:43:28,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 09:43:28,595 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-12-23 09:43:28,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:43:28,607 INFO L225 Difference]: With dead ends: 2303 [2020-12-23 09:43:28,607 INFO L226 Difference]: Without dead ends: 1821 [2020-12-23 09:43:28,609 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 09:43:28,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1821 states. [2020-12-23 09:43:28,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1821 to 960. [2020-12-23 09:43:28,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 960 states. [2020-12-23 09:43:28,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1532 transitions. [2020-12-23 09:43:28,660 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1532 transitions. Word has length 69 [2020-12-23 09:43:28,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:43:28,662 INFO L481 AbstractCegarLoop]: Abstraction has 960 states and 1532 transitions. [2020-12-23 09:43:28,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:43:28,662 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1532 transitions. [2020-12-23 09:43:28,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-23 09:43:28,665 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:43:28,665 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:43:28,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 09:43:28,666 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:43:28,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:43:28,667 INFO L82 PathProgramCache]: Analyzing trace with hash -1614123231, now seen corresponding path program 1 times [2020-12-23 09:43:28,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:43:28,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408360430] [2020-12-23 09:43:28,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:43:28,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:43:28,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:43:28,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408360430] [2020-12-23 09:43:28,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:43:28,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:43:28,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121590309] [2020-12-23 09:43:28,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:43:28,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:43:28,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:43:28,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:43:28,826 INFO L87 Difference]: Start difference. First operand 960 states and 1532 transitions. Second operand 4 states. [2020-12-23 09:43:29,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:43:29,013 INFO L93 Difference]: Finished difference Result 2793 states and 4533 transitions. [2020-12-23 09:43:29,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:43:29,014 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2020-12-23 09:43:29,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:43:29,027 INFO L225 Difference]: With dead ends: 2793 [2020-12-23 09:43:29,027 INFO L226 Difference]: Without dead ends: 1890 [2020-12-23 09:43:29,031 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:43:29,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1890 states. [2020-12-23 09:43:29,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1890 to 1416. [2020-12-23 09:43:29,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1416 states. [2020-12-23 09:43:29,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 2275 transitions. [2020-12-23 09:43:29,103 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 2275 transitions. Word has length 70 [2020-12-23 09:43:29,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:43:29,104 INFO L481 AbstractCegarLoop]: Abstraction has 1416 states and 2275 transitions. [2020-12-23 09:43:29,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:43:29,105 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 2275 transitions. [2020-12-23 09:43:29,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-23 09:43:29,107 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:43:29,107 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:43:29,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 09:43:29,108 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:43:29,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:43:29,108 INFO L82 PathProgramCache]: Analyzing trace with hash -252040890, now seen corresponding path program 1 times [2020-12-23 09:43:29,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:43:29,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125471468] [2020-12-23 09:43:29,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:43:29,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:43:29,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:43:29,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125471468] [2020-12-23 09:43:29,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:43:29,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:43:29,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747262393] [2020-12-23 09:43:29,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:43:29,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:43:29,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:43:29,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:43:29,234 INFO L87 Difference]: Start difference. First operand 1416 states and 2275 transitions. Second operand 4 states. [2020-12-23 09:43:29,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:43:29,431 INFO L93 Difference]: Finished difference Result 4216 states and 6836 transitions. [2020-12-23 09:43:29,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:43:29,432 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2020-12-23 09:43:29,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:43:29,448 INFO L225 Difference]: With dead ends: 4216 [2020-12-23 09:43:29,448 INFO L226 Difference]: Without dead ends: 2857 [2020-12-23 09:43:29,451 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:43:29,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2857 states. [2020-12-23 09:43:29,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2857 to 2067. [2020-12-23 09:43:29,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2067 states. [2020-12-23 09:43:29,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2067 states to 2067 states and 3322 transitions. [2020-12-23 09:43:29,570 INFO L78 Accepts]: Start accepts. Automaton has 2067 states and 3322 transitions. Word has length 71 [2020-12-23 09:43:29,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:43:29,571 INFO L481 AbstractCegarLoop]: Abstraction has 2067 states and 3322 transitions. [2020-12-23 09:43:29,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:43:29,571 INFO L276 IsEmpty]: Start isEmpty. Operand 2067 states and 3322 transitions. [2020-12-23 09:43:29,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-23 09:43:29,579 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:43:29,580 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:43:29,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 09:43:29,580 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:43:29,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:43:29,581 INFO L82 PathProgramCache]: Analyzing trace with hash -630566449, now seen corresponding path program 1 times [2020-12-23 09:43:29,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:43:29,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473637733] [2020-12-23 09:43:29,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:43:29,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:43:29,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:43:29,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473637733] [2020-12-23 09:43:29,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:43:29,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:43:29,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852813400] [2020-12-23 09:43:29,680 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:43:29,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:43:29,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:43:29,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:43:29,682 INFO L87 Difference]: Start difference. First operand 2067 states and 3322 transitions. Second operand 3 states. [2020-12-23 09:43:29,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:43:29,789 INFO L93 Difference]: Finished difference Result 4274 states and 6880 transitions. [2020-12-23 09:43:29,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:43:29,790 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2020-12-23 09:43:29,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:43:29,805 INFO L225 Difference]: With dead ends: 4274 [2020-12-23 09:43:29,806 INFO L226 Difference]: Without dead ends: 3076 [2020-12-23 09:43:29,809 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:43:29,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3076 states. [2020-12-23 09:43:29,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3076 to 3074. [2020-12-23 09:43:29,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3074 states. [2020-12-23 09:43:29,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3074 states to 3074 states and 4900 transitions. [2020-12-23 09:43:29,948 INFO L78 Accepts]: Start accepts. Automaton has 3074 states and 4900 transitions. Word has length 72 [2020-12-23 09:43:29,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:43:29,952 INFO L481 AbstractCegarLoop]: Abstraction has 3074 states and 4900 transitions. [2020-12-23 09:43:29,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:43:29,953 INFO L276 IsEmpty]: Start isEmpty. Operand 3074 states and 4900 transitions. [2020-12-23 09:43:29,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-23 09:43:29,955 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:43:29,955 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:43:29,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 09:43:29,955 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:43:29,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:43:29,956 INFO L82 PathProgramCache]: Analyzing trace with hash -808156936, now seen corresponding path program 1 times [2020-12-23 09:43:29,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:43:29,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559903508] [2020-12-23 09:43:29,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:43:29,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:43:30,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:43:30,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559903508] [2020-12-23 09:43:30,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:43:30,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:43:30,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17633437] [2020-12-23 09:43:30,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:43:30,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:43:30,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:43:30,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:43:30,029 INFO L87 Difference]: Start difference. First operand 3074 states and 4900 transitions. Second operand 4 states. [2020-12-23 09:43:30,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:43:30,356 INFO L93 Difference]: Finished difference Result 9240 states and 14853 transitions. [2020-12-23 09:43:30,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:43:30,358 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 72 [2020-12-23 09:43:30,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:43:30,389 INFO L225 Difference]: With dead ends: 9240 [2020-12-23 09:43:30,389 INFO L226 Difference]: Without dead ends: 6354 [2020-12-23 09:43:30,397 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:43:30,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6354 states. [2020-12-23 09:43:30,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6354 to 4698. [2020-12-23 09:43:30,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4698 states. [2020-12-23 09:43:30,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4698 states to 4698 states and 7486 transitions. [2020-12-23 09:43:30,641 INFO L78 Accepts]: Start accepts. Automaton has 4698 states and 7486 transitions. Word has length 72 [2020-12-23 09:43:30,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:43:30,642 INFO L481 AbstractCegarLoop]: Abstraction has 4698 states and 7486 transitions. [2020-12-23 09:43:30,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:43:30,642 INFO L276 IsEmpty]: Start isEmpty. Operand 4698 states and 7486 transitions. [2020-12-23 09:43:30,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-23 09:43:30,645 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:43:30,645 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:43:30,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 09:43:30,645 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:43:30,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:43:30,646 INFO L82 PathProgramCache]: Analyzing trace with hash -1968035874, now seen corresponding path program 1 times [2020-12-23 09:43:30,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:43:30,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126828685] [2020-12-23 09:43:30,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:43:30,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:43:30,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:43:30,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126828685] [2020-12-23 09:43:30,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:43:30,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:43:30,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088642702] [2020-12-23 09:43:30,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:43:30,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:43:30,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:43:30,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:43:30,772 INFO L87 Difference]: Start difference. First operand 4698 states and 7486 transitions. Second operand 3 states. [2020-12-23 09:43:31,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:43:31,033 INFO L93 Difference]: Finished difference Result 10286 states and 16464 transitions. [2020-12-23 09:43:31,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:43:31,034 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2020-12-23 09:43:31,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:43:31,090 INFO L225 Difference]: With dead ends: 10286 [2020-12-23 09:43:31,090 INFO L226 Difference]: Without dead ends: 6983 [2020-12-23 09:43:31,097 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:43:31,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6983 states. [2020-12-23 09:43:31,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6983 to 6981. [2020-12-23 09:43:31,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6981 states. [2020-12-23 09:43:31,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6981 states to 6981 states and 11071 transitions. [2020-12-23 09:43:31,431 INFO L78 Accepts]: Start accepts. Automaton has 6981 states and 11071 transitions. Word has length 72 [2020-12-23 09:43:31,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:43:31,431 INFO L481 AbstractCegarLoop]: Abstraction has 6981 states and 11071 transitions. [2020-12-23 09:43:31,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:43:31,432 INFO L276 IsEmpty]: Start isEmpty. Operand 6981 states and 11071 transitions. [2020-12-23 09:43:31,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-23 09:43:31,433 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:43:31,433 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:43:31,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 09:43:31,433 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:43:31,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:43:31,434 INFO L82 PathProgramCache]: Analyzing trace with hash 952039085, now seen corresponding path program 1 times [2020-12-23 09:43:31,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:43:31,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641160521] [2020-12-23 09:43:31,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:43:31,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:43:31,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:43:31,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641160521] [2020-12-23 09:43:31,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:43:31,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:43:31,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372972031] [2020-12-23 09:43:31,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:43:31,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:43:31,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:43:31,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:43:31,486 INFO L87 Difference]: Start difference. First operand 6981 states and 11071 transitions. Second operand 3 states. [2020-12-23 09:43:31,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:43:31,883 INFO L93 Difference]: Finished difference Result 15555 states and 24952 transitions. [2020-12-23 09:43:31,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:43:31,884 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2020-12-23 09:43:31,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:43:31,954 INFO L225 Difference]: With dead ends: 15555 [2020-12-23 09:43:31,954 INFO L226 Difference]: Without dead ends: 10468 [2020-12-23 09:43:31,965 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:43:31,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10468 states. [2020-12-23 09:43:32,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10468 to 10466. [2020-12-23 09:43:32,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10466 states. [2020-12-23 09:43:32,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10466 states to 10466 states and 16575 transitions. [2020-12-23 09:43:32,441 INFO L78 Accepts]: Start accepts. Automaton has 10466 states and 16575 transitions. Word has length 72 [2020-12-23 09:43:32,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:43:32,442 INFO L481 AbstractCegarLoop]: Abstraction has 10466 states and 16575 transitions. [2020-12-23 09:43:32,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:43:32,442 INFO L276 IsEmpty]: Start isEmpty. Operand 10466 states and 16575 transitions. [2020-12-23 09:43:32,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-23 09:43:32,443 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:43:32,443 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:43:32,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-23 09:43:32,444 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:43:32,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:43:32,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1377255792, now seen corresponding path program 1 times [2020-12-23 09:43:32,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:43:32,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964493775] [2020-12-23 09:43:32,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:43:32,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:43:32,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:43:32,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964493775] [2020-12-23 09:43:32,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:43:32,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:43:32,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803957606] [2020-12-23 09:43:32,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:43:32,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:43:32,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:43:32,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:43:32,622 INFO L87 Difference]: Start difference. First operand 10466 states and 16575 transitions. Second operand 4 states. [2020-12-23 09:43:33,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:43:33,528 INFO L93 Difference]: Finished difference Result 31026 states and 49119 transitions. [2020-12-23 09:43:33,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:43:33,529 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 74 [2020-12-23 09:43:33,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:43:33,580 INFO L225 Difference]: With dead ends: 31026 [2020-12-23 09:43:33,581 INFO L226 Difference]: Without dead ends: 20569 [2020-12-23 09:43:33,605 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:43:33,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20569 states. [2020-12-23 09:43:34,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20569 to 20567. [2020-12-23 09:43:34,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20567 states. [2020-12-23 09:43:34,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20567 states to 20567 states and 32332 transitions. [2020-12-23 09:43:34,459 INFO L78 Accepts]: Start accepts. Automaton has 20567 states and 32332 transitions. Word has length 74 [2020-12-23 09:43:34,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:43:34,460 INFO L481 AbstractCegarLoop]: Abstraction has 20567 states and 32332 transitions. [2020-12-23 09:43:34,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:43:34,460 INFO L276 IsEmpty]: Start isEmpty. Operand 20567 states and 32332 transitions. [2020-12-23 09:43:34,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-23 09:43:34,461 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:43:34,461 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:43:34,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-23 09:43:34,462 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:43:34,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:43:34,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1916429764, now seen corresponding path program 1 times [2020-12-23 09:43:34,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:43:34,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199040321] [2020-12-23 09:43:34,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:43:34,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:43:34,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:43:34,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199040321] [2020-12-23 09:43:34,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:43:34,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:43:34,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999986388] [2020-12-23 09:43:34,587 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:43:34,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:43:34,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:43:34,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:43:34,588 INFO L87 Difference]: Start difference. First operand 20567 states and 32332 transitions. Second operand 3 states. [2020-12-23 09:43:36,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:43:36,103 INFO L93 Difference]: Finished difference Result 61663 states and 96934 transitions. [2020-12-23 09:43:36,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:43:36,104 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2020-12-23 09:43:36,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:43:36,208 INFO L225 Difference]: With dead ends: 61663 [2020-12-23 09:43:36,208 INFO L226 Difference]: Without dead ends: 41124 [2020-12-23 09:43:36,235 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:43:36,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41124 states. [2020-12-23 09:43:37,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41124 to 20569. [2020-12-23 09:43:37,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20569 states. [2020-12-23 09:43:37,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20569 states to 20569 states and 32334 transitions. [2020-12-23 09:43:37,413 INFO L78 Accepts]: Start accepts. Automaton has 20569 states and 32334 transitions. Word has length 75 [2020-12-23 09:43:37,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:43:37,413 INFO L481 AbstractCegarLoop]: Abstraction has 20569 states and 32334 transitions. [2020-12-23 09:43:37,413 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:43:37,413 INFO L276 IsEmpty]: Start isEmpty. Operand 20569 states and 32334 transitions. [2020-12-23 09:43:37,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-23 09:43:37,414 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:43:37,414 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:43:37,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-23 09:43:37,415 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:43:37,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:43:37,415 INFO L82 PathProgramCache]: Analyzing trace with hash 539922453, now seen corresponding path program 1 times [2020-12-23 09:43:37,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:43:37,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310860196] [2020-12-23 09:43:37,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:43:37,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:43:37,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:43:37,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310860196] [2020-12-23 09:43:37,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:43:37,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:43:37,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636609432] [2020-12-23 09:43:37,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:43:37,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:43:37,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:43:37,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:43:37,531 INFO L87 Difference]: Start difference. First operand 20569 states and 32334 transitions. Second operand 4 states. [2020-12-23 09:43:39,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:43:39,043 INFO L93 Difference]: Finished difference Result 60967 states and 95802 transitions. [2020-12-23 09:43:39,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:43:39,044 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 76 [2020-12-23 09:43:39,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:43:39,144 INFO L225 Difference]: With dead ends: 60967 [2020-12-23 09:43:39,144 INFO L226 Difference]: Without dead ends: 40410 [2020-12-23 09:43:39,173 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:43:39,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40410 states. [2020-12-23 09:43:40,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40410 to 40408. [2020-12-23 09:43:40,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40408 states. [2020-12-23 09:43:40,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40408 states to 40408 states and 63033 transitions. [2020-12-23 09:43:40,866 INFO L78 Accepts]: Start accepts. Automaton has 40408 states and 63033 transitions. Word has length 76 [2020-12-23 09:43:40,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:43:40,866 INFO L481 AbstractCegarLoop]: Abstraction has 40408 states and 63033 transitions. [2020-12-23 09:43:40,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:43:40,866 INFO L276 IsEmpty]: Start isEmpty. Operand 40408 states and 63033 transitions. [2020-12-23 09:43:40,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-23 09:43:40,867 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:43:40,867 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:43:40,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-23 09:43:40,867 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:43:40,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:43:40,868 INFO L82 PathProgramCache]: Analyzing trace with hash 31107364, now seen corresponding path program 1 times [2020-12-23 09:43:40,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:43:40,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731612209] [2020-12-23 09:43:40,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:43:40,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:43:40,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:43:40,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731612209] [2020-12-23 09:43:40,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:43:40,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:43:40,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777388523] [2020-12-23 09:43:40,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:43:40,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:43:40,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:43:40,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:43:40,962 INFO L87 Difference]: Start difference. First operand 40408 states and 63033 transitions. Second operand 4 states. [2020-12-23 09:43:43,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:43:43,584 INFO L93 Difference]: Finished difference Result 119716 states and 186647 transitions. [2020-12-23 09:43:43,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:43:43,585 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 76 [2020-12-23 09:43:43,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:43:43,731 INFO L225 Difference]: With dead ends: 119716 [2020-12-23 09:43:43,731 INFO L226 Difference]: Without dead ends: 79354 [2020-12-23 09:43:43,761 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:43:43,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79354 states. [2020-12-23 09:43:46,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79354 to 79352. [2020-12-23 09:43:46,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79352 states. [2020-12-23 09:43:47,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79352 states to 79352 states and 122783 transitions. [2020-12-23 09:43:47,007 INFO L78 Accepts]: Start accepts. Automaton has 79352 states and 122783 transitions. Word has length 76 [2020-12-23 09:43:47,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:43:47,007 INFO L481 AbstractCegarLoop]: Abstraction has 79352 states and 122783 transitions. [2020-12-23 09:43:47,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:43:47,008 INFO L276 IsEmpty]: Start isEmpty. Operand 79352 states and 122783 transitions. [2020-12-23 09:43:47,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-23 09:43:47,010 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:43:47,010 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:43:47,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-23 09:43:47,010 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:43:47,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:43:47,011 INFO L82 PathProgramCache]: Analyzing trace with hash -1176909096, now seen corresponding path program 1 times [2020-12-23 09:43:47,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:43:47,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096767072] [2020-12-23 09:43:47,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:43:47,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:43:47,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:43:47,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096767072] [2020-12-23 09:43:47,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:43:47,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:43:47,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275565181] [2020-12-23 09:43:47,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:43:47,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:43:47,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:43:47,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:43:47,047 INFO L87 Difference]: Start difference. First operand 79352 states and 122783 transitions. Second operand 3 states. [2020-12-23 09:43:52,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:43:52,232 INFO L93 Difference]: Finished difference Result 237932 states and 368157 transitions. [2020-12-23 09:43:52,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:43:52,232 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-23 09:43:52,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:43:52,501 INFO L225 Difference]: With dead ends: 237932 [2020-12-23 09:43:52,501 INFO L226 Difference]: Without dead ends: 158654 [2020-12-23 09:43:52,567 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:43:52,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158654 states. [2020-12-23 09:43:56,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158654 to 79360. [2020-12-23 09:43:56,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79360 states. [2020-12-23 09:43:56,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79360 states to 79360 states and 122791 transitions. [2020-12-23 09:43:56,582 INFO L78 Accepts]: Start accepts. Automaton has 79360 states and 122791 transitions. Word has length 77 [2020-12-23 09:43:56,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:43:56,582 INFO L481 AbstractCegarLoop]: Abstraction has 79360 states and 122791 transitions. [2020-12-23 09:43:56,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:43:56,582 INFO L276 IsEmpty]: Start isEmpty. Operand 79360 states and 122791 transitions. [2020-12-23 09:43:56,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-23 09:43:56,589 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:43:56,591 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:43:56,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-23 09:43:56,591 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:43:56,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:43:56,591 INFO L82 PathProgramCache]: Analyzing trace with hash 604186441, now seen corresponding path program 1 times [2020-12-23 09:43:56,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:43:56,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892122657] [2020-12-23 09:43:56,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:43:56,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:43:56,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:43:56,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892122657] [2020-12-23 09:43:56,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:43:56,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:43:56,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055157427] [2020-12-23 09:43:56,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:43:56,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:43:56,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:43:56,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:43:56,699 INFO L87 Difference]: Start difference. First operand 79360 states and 122791 transitions. Second operand 4 states. [2020-12-23 09:44:02,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:44:02,187 INFO L93 Difference]: Finished difference Result 235108 states and 363554 transitions. [2020-12-23 09:44:02,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:44:02,188 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2020-12-23 09:44:02,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:44:02,632 INFO L225 Difference]: With dead ends: 235108 [2020-12-23 09:44:02,633 INFO L226 Difference]: Without dead ends: 155803 [2020-12-23 09:44:02,706 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:44:02,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155803 states. [2020-12-23 09:44:08,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155803 to 155801. [2020-12-23 09:44:08,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155801 states. [2020-12-23 09:44:09,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155801 states to 155801 states and 239045 transitions. [2020-12-23 09:44:09,318 INFO L78 Accepts]: Start accepts. Automaton has 155801 states and 239045 transitions. Word has length 78 [2020-12-23 09:44:09,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:44:09,318 INFO L481 AbstractCegarLoop]: Abstraction has 155801 states and 239045 transitions. [2020-12-23 09:44:09,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:44:09,318 INFO L276 IsEmpty]: Start isEmpty. Operand 155801 states and 239045 transitions. [2020-12-23 09:44:09,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-23 09:44:09,321 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:44:09,321 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:44:09,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-23 09:44:09,321 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:44:09,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:44:09,321 INFO L82 PathProgramCache]: Analyzing trace with hash 120131000, now seen corresponding path program 1 times [2020-12-23 09:44:09,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:44:09,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261598079] [2020-12-23 09:44:09,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:44:09,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:44:09,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:44:09,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261598079] [2020-12-23 09:44:09,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:44:09,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:44:09,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853154296] [2020-12-23 09:44:09,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:44:09,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:44:09,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:44:09,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:44:09,424 INFO L87 Difference]: Start difference. First operand 155801 states and 239045 transitions. Second operand 4 states. [2020-12-23 09:44:20,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:44:20,743 INFO L93 Difference]: Finished difference Result 461429 states and 707439 transitions. [2020-12-23 09:44:20,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:44:20,744 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2020-12-23 09:44:20,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:44:21,338 INFO L225 Difference]: With dead ends: 461429 [2020-12-23 09:44:21,338 INFO L226 Difference]: Without dead ends: 305787 [2020-12-23 09:44:21,483 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:44:21,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305787 states. [2020-12-23 09:44:34,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305787 to 305785. [2020-12-23 09:44:34,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305785 states. [2020-12-23 09:44:35,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305785 states to 305785 states and 465045 transitions. [2020-12-23 09:44:35,068 INFO L78 Accepts]: Start accepts. Automaton has 305785 states and 465045 transitions. Word has length 78 [2020-12-23 09:44:35,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:44:35,068 INFO L481 AbstractCegarLoop]: Abstraction has 305785 states and 465045 transitions. [2020-12-23 09:44:35,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:44:35,069 INFO L276 IsEmpty]: Start isEmpty. Operand 305785 states and 465045 transitions. [2020-12-23 09:44:35,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-23 09:44:35,073 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:44:35,073 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:44:35,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-23 09:44:35,074 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:44:35,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:44:35,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1883818476, now seen corresponding path program 1 times [2020-12-23 09:44:35,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:44:35,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566506623] [2020-12-23 09:44:35,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:44:35,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:44:35,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:44:35,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566506623] [2020-12-23 09:44:35,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:44:35,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:44:35,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587777719] [2020-12-23 09:44:35,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:44:35,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:44:35,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:44:35,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:44:35,119 INFO L87 Difference]: Start difference. First operand 305785 states and 465045 transitions. Second operand 3 states. [2020-12-23 09:44:58,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:44:58,110 INFO L93 Difference]: Finished difference Result 916061 states and 1393543 transitions. [2020-12-23 09:44:58,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:44:58,111 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-12-23 09:44:58,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:44:59,360 INFO L225 Difference]: With dead ends: 916061 [2020-12-23 09:44:59,361 INFO L226 Difference]: Without dead ends: 611339 [2020-12-23 09:44:59,689 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:45:00,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611339 states. [2020-12-23 09:45:17,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611339 to 305817. [2020-12-23 09:45:17,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305817 states. [2020-12-23 09:45:18,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305817 states to 305817 states and 465077 transitions. [2020-12-23 09:45:18,952 INFO L78 Accepts]: Start accepts. Automaton has 305817 states and 465077 transitions. Word has length 79 [2020-12-23 09:45:18,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:45:18,952 INFO L481 AbstractCegarLoop]: Abstraction has 305817 states and 465077 transitions. [2020-12-23 09:45:18,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:45:18,952 INFO L276 IsEmpty]: Start isEmpty. Operand 305817 states and 465077 transitions. [2020-12-23 09:45:18,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-23 09:45:18,958 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:45:18,958 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:45:18,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-23 09:45:18,958 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:45:18,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:45:18,959 INFO L82 PathProgramCache]: Analyzing trace with hash 809988221, now seen corresponding path program 1 times [2020-12-23 09:45:18,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:45:18,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45617570] [2020-12-23 09:45:18,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:45:19,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:45:19,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:45:19,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45617570] [2020-12-23 09:45:19,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:45:19,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:45:19,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355066810] [2020-12-23 09:45:19,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:45:19,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:45:19,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:45:19,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:45:19,193 INFO L87 Difference]: Start difference. First operand 305817 states and 465077 transitions. Second operand 4 states. [2020-12-23 09:45:47,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:45:47,499 INFO L93 Difference]: Finished difference Result 905584 states and 1376019 transitions. [2020-12-23 09:45:47,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:45:47,499 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2020-12-23 09:45:47,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:45:48,830 INFO L225 Difference]: With dead ends: 905584 [2020-12-23 09:45:48,830 INFO L226 Difference]: Without dead ends: 600018 [2020-12-23 09:45:49,150 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:45:50,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600018 states.