/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/systemc/kundu.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 19:22:14,406 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 19:22:14,409 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 19:22:14,463 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 19:22:14,463 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 19:22:14,468 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 19:22:14,471 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 19:22:14,476 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 19:22:14,480 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 19:22:14,487 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 19:22:14,491 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 19:22:14,493 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 19:22:14,493 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 19:22:14,496 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 19:22:14,498 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 19:22:14,500 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 19:22:14,501 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 19:22:14,504 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 19:22:14,511 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 19:22:14,519 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 19:22:14,521 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 19:22:14,523 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 19:22:14,525 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 19:22:14,527 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 19:22:14,547 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 19:22:14,557 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 19:22:14,558 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 19:22:14,559 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 19:22:14,560 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 19:22:14,587 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 19:22:14,587 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 19:22:14,589 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 19:22:14,589 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 19:22:14,589 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 19:22:14,589 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 19:22:14,590 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 19:22:14,590 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 19:22:14,590 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 19:22:14,590 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 19:22:14,590 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 19:22:14,591 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 19:22:14,591 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 19:22:14,591 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 19:22:14,591 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 19:22:14,592 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 19:22:14,592 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 19:22:14,592 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 19:22:14,592 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 19:22:14,592 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 19:22:14,593 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 19:22:14,593 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 19:22:14,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 19:22:14,593 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 19:22:14,594 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 19:22:14,594 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 19:22:14,993 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 19:22:15,029 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 19:22:15,033 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 19:22:15,034 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 19:22:15,035 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 19:22:15,036 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/kundu.cil.c [2021-01-06 19:22:15,126 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/9a81c4019/c7cf65c13e024b3887782c6dbd7559f2/FLAGe091fed93 [2021-01-06 19:22:15,860 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 19:22:15,860 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/systemc/kundu.cil.c [2021-01-06 19:22:15,882 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/9a81c4019/c7cf65c13e024b3887782c6dbd7559f2/FLAGe091fed93 [2021-01-06 19:22:16,175 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/9a81c4019/c7cf65c13e024b3887782c6dbd7559f2 [2021-01-06 19:22:16,178 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 19:22:16,181 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 19:22:16,185 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 19:22:16,185 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 19:22:16,191 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 19:22:16,192 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 07:22:16" (1/1) ... [2021-01-06 19:22:16,193 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6989d17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:22:16, skipping insertion in model container [2021-01-06 19:22:16,193 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 07:22:16" (1/1) ... [2021-01-06 19:22:16,203 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 19:22:16,242 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 19:22:16,401 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/systemc/kundu.cil.c[330,343] left hand side expression in assignment: lhs: VariableLHS[~__retres3~0,] left hand side expression in assignment: lhs: VariableLHS[~__retres3~0,] left hand side expression in assignment: lhs: VariableLHS[~__retres3~0,] left hand side expression in assignment: lhs: VariableLHS[~data_0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~data_1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~P_1_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~P_1_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~P_1_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__retres1~0,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~0,] left hand side expression in assignment: lhs: VariableLHS[~timer~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~e~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~e~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~P_2_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~P_2_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~P_2_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__retres1~1,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~1,] left hand side expression in assignment: lhs: VariableLHS[~timer~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~C_1_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~C_1_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~c~1,] left hand side expression in assignment: lhs: VariableLHS[~C_1_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~C_1_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~C_1_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__retres1~2,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~2,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~2,] left hand side expression in assignment: lhs: VariableLHS[~P_1_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~P_1_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~P_2_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~P_2_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~C_1_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~C_1_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__retres1~3,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~3,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~3,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~3,] left hand side expression in assignment: lhs: VariableLHS[~tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~P_1_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~P_2_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~C_1_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~C_1_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~P_1_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~P_2_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~clk~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~clk~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~P_1_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~P_2_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~C_1_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~P_1_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~1,] left hand side expression in assignment: lhs: VariableLHS[~P_2_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp___1~1,] left hand side expression in assignment: lhs: VariableLHS[~C_1_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp~2,] left hand side expression in assignment: lhs: VariableLHS[~__retres2~0,] left hand side expression in assignment: lhs: VariableLHS[~__retres2~0,] left hand side expression in assignment: lhs: VariableLHS[~kernel_st~0,] left hand side expression in assignment: lhs: VariableLHS[~kernel_st~0,] left hand side expression in assignment: lhs: VariableLHS[~kernel_st~0,] left hand side expression in assignment: lhs: VariableLHS[~kernel_st~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~3,] left hand side expression in assignment: lhs: VariableLHS[~kernel_st~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~2,] left hand side expression in assignment: lhs: VariableLHS[~P_1_i~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~P_2_i~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~C_1_i~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~num~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~clk~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max_loop~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~timer~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~P_1_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~P_2_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~C_1_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~count~0,] left hand side expression in assignment: lhs: VariableLHS[~__retres2~1,] [2021-01-06 19:22:16,512 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 19:22:16,530 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 19:22:16,542 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/systemc/kundu.cil.c[330,343] left hand side expression in assignment: lhs: VariableLHS[~__retres3~0,] left hand side expression in assignment: lhs: VariableLHS[~__retres3~0,] left hand side expression in assignment: lhs: VariableLHS[~__retres3~0,] left hand side expression in assignment: lhs: VariableLHS[~data_0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~data_1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~P_1_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~P_1_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~P_1_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__retres1~0,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~0,] left hand side expression in assignment: lhs: VariableLHS[~timer~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~e~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~e~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~P_2_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~P_2_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~P_2_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__retres1~1,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~1,] left hand side expression in assignment: lhs: VariableLHS[~timer~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~C_1_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~C_1_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~c~1,] left hand side expression in assignment: lhs: VariableLHS[~C_1_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~C_1_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~C_1_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__retres1~2,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~2,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~2,] left hand side expression in assignment: lhs: VariableLHS[~P_1_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~P_1_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~P_2_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~P_2_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~C_1_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~C_1_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__retres1~3,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~3,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~3,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~3,] left hand side expression in assignment: lhs: VariableLHS[~tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~P_1_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~P_2_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~C_1_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~C_1_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~P_1_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~P_2_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~clk~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~clk~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~P_1_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~P_2_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~C_1_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~P_1_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~1,] left hand side expression in assignment: lhs: VariableLHS[~P_2_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp___1~1,] left hand side expression in assignment: lhs: VariableLHS[~C_1_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp~2,] left hand side expression in assignment: lhs: VariableLHS[~__retres2~0,] left hand side expression in assignment: lhs: VariableLHS[~__retres2~0,] left hand side expression in assignment: lhs: VariableLHS[~kernel_st~0,] left hand side expression in assignment: lhs: VariableLHS[~kernel_st~0,] left hand side expression in assignment: lhs: VariableLHS[~kernel_st~0,] left hand side expression in assignment: lhs: VariableLHS[~kernel_st~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~3,] left hand side expression in assignment: lhs: VariableLHS[~kernel_st~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~2,] left hand side expression in assignment: lhs: VariableLHS[~P_1_i~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~P_2_i~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~C_1_i~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~num~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~clk~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max_loop~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~timer~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~P_1_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~P_2_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~C_1_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~count~0,] left hand side expression in assignment: lhs: VariableLHS[~__retres2~1,] [2021-01-06 19:22:16,583 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 19:22:16,612 INFO L208 MainTranslator]: Completed translation [2021-01-06 19:22:16,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:22:16 WrapperNode [2021-01-06 19:22:16,613 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 19:22:16,614 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 19:22:16,614 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 19:22:16,615 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 19:22:16,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:22:16" (1/1) ... [2021-01-06 19:22:16,635 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:22:16" (1/1) ... [2021-01-06 19:22:16,682 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 19:22:16,683 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 19:22:16,683 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 19:22:16,683 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 19:22:16,693 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:22:16" (1/1) ... [2021-01-06 19:22:16,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:22:16" (1/1) ... [2021-01-06 19:22:16,698 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:22:16" (1/1) ... [2021-01-06 19:22:16,699 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:22:16" (1/1) ... [2021-01-06 19:22:16,709 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:22:16" (1/1) ... [2021-01-06 19:22:16,727 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:22:16" (1/1) ... [2021-01-06 19:22:16,735 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:22:16" (1/1) ... [2021-01-06 19:22:16,746 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 19:22:16,750 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 19:22:16,750 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 19:22:16,751 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 19:22:16,752 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:22:16" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 19:22:16,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 19:22:16,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 19:22:16,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 19:22:16,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 19:22:17,933 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 19:22:17,934 INFO L299 CfgBuilder]: Removed 95 assume(true) statements. [2021-01-06 19:22:17,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 07:22:17 BoogieIcfgContainer [2021-01-06 19:22:17,936 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 19:22:17,938 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 19:22:17,938 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 19:22:17,942 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 19:22:17,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 07:22:16" (1/3) ... [2021-01-06 19:22:17,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@635887e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 07:22:17, skipping insertion in model container [2021-01-06 19:22:17,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:22:16" (2/3) ... [2021-01-06 19:22:17,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@635887e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 07:22:17, skipping insertion in model container [2021-01-06 19:22:17,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 07:22:17" (3/3) ... [2021-01-06 19:22:17,945 INFO L111 eAbstractionObserver]: Analyzing ICFG kundu.cil.c [2021-01-06 19:22:17,952 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 19:22:17,957 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2021-01-06 19:22:17,976 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-01-06 19:22:18,006 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 19:22:18,006 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 19:22:18,006 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 19:22:18,007 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 19:22:18,007 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 19:22:18,007 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 19:22:18,007 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 19:22:18,007 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 19:22:18,028 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states. [2021-01-06 19:22:18,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-01-06 19:22:18,037 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:22:18,037 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] [2021-01-06 19:22:18,038 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:22:18,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:22:18,044 INFO L82 PathProgramCache]: Analyzing trace with hash 805260304, now seen corresponding path program 1 times [2021-01-06 19:22:18,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:22:18,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195681835] [2021-01-06 19:22:18,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:22:18,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:22:18,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:22:18,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195681835] [2021-01-06 19:22:18,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:22:18,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:22:18,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908483981] [2021-01-06 19:22:18,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:22:18,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:22:18,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:22:18,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:22:18,284 INFO L87 Difference]: Start difference. First operand 181 states. Second operand 3 states. [2021-01-06 19:22:18,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:22:18,353 INFO L93 Difference]: Finished difference Result 356 states and 544 transitions. [2021-01-06 19:22:18,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:22:18,357 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2021-01-06 19:22:18,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:22:18,374 INFO L225 Difference]: With dead ends: 356 [2021-01-06 19:22:18,374 INFO L226 Difference]: Without dead ends: 176 [2021-01-06 19:22:18,379 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:22:18,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-01-06 19:22:18,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2021-01-06 19:22:18,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2021-01-06 19:22:18,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 259 transitions. [2021-01-06 19:22:18,475 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 259 transitions. Word has length 40 [2021-01-06 19:22:18,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:22:18,476 INFO L481 AbstractCegarLoop]: Abstraction has 176 states and 259 transitions. [2021-01-06 19:22:18,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:22:18,476 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 259 transitions. [2021-01-06 19:22:18,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-01-06 19:22:18,478 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:22:18,478 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] [2021-01-06 19:22:18,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 19:22:18,479 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:22:18,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:22:18,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1199627090, now seen corresponding path program 1 times [2021-01-06 19:22:18,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:22:18,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864131964] [2021-01-06 19:22:18,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:22:18,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:22:18,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:22:18,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864131964] [2021-01-06 19:22:18,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:22:18,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 19:22:18,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109659819] [2021-01-06 19:22:18,587 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 19:22:18,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:22:18,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 19:22:18,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 19:22:18,589 INFO L87 Difference]: Start difference. First operand 176 states and 259 transitions. Second operand 5 states. [2021-01-06 19:22:18,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:22:18,804 INFO L93 Difference]: Finished difference Result 641 states and 944 transitions. [2021-01-06 19:22:18,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 19:22:18,805 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2021-01-06 19:22:18,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:22:18,810 INFO L225 Difference]: With dead ends: 641 [2021-01-06 19:22:18,810 INFO L226 Difference]: Without dead ends: 478 [2021-01-06 19:22:18,812 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-06 19:22:18,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2021-01-06 19:22:18,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 188. [2021-01-06 19:22:18,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2021-01-06 19:22:18,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 271 transitions. [2021-01-06 19:22:18,841 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 271 transitions. Word has length 40 [2021-01-06 19:22:18,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:22:18,841 INFO L481 AbstractCegarLoop]: Abstraction has 188 states and 271 transitions. [2021-01-06 19:22:18,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 19:22:18,842 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 271 transitions. [2021-01-06 19:22:18,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-01-06 19:22:18,843 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:22:18,844 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] [2021-01-06 19:22:18,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 19:22:18,844 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:22:18,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:22:18,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1709136812, now seen corresponding path program 1 times [2021-01-06 19:22:18,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:22:18,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754948441] [2021-01-06 19:22:18,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:22:18,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:22:18,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:22:18,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754948441] [2021-01-06 19:22:18,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:22:18,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 19:22:18,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268155967] [2021-01-06 19:22:18,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 19:22:18,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:22:18,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 19:22:18,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 19:22:18,924 INFO L87 Difference]: Start difference. First operand 188 states and 271 transitions. Second operand 4 states. [2021-01-06 19:22:19,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:22:19,056 INFO L93 Difference]: Finished difference Result 657 states and 945 transitions. [2021-01-06 19:22:19,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 19:22:19,057 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2021-01-06 19:22:19,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:22:19,060 INFO L225 Difference]: With dead ends: 657 [2021-01-06 19:22:19,060 INFO L226 Difference]: Without dead ends: 477 [2021-01-06 19:22:19,062 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 [2021-01-06 19:22:19,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2021-01-06 19:22:19,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 421. [2021-01-06 19:22:19,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2021-01-06 19:22:19,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 609 transitions. [2021-01-06 19:22:19,101 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 609 transitions. Word has length 40 [2021-01-06 19:22:19,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:22:19,101 INFO L481 AbstractCegarLoop]: Abstraction has 421 states and 609 transitions. [2021-01-06 19:22:19,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 19:22:19,102 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 609 transitions. [2021-01-06 19:22:19,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-01-06 19:22:19,105 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:22:19,105 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] [2021-01-06 19:22:19,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 19:22:19,105 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:22:19,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:22:19,109 INFO L82 PathProgramCache]: Analyzing trace with hash 913312853, now seen corresponding path program 1 times [2021-01-06 19:22:19,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:22:19,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054134738] [2021-01-06 19:22:19,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:22:19,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:22:19,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:22:19,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054134738] [2021-01-06 19:22:19,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:22:19,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 19:22:19,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792287500] [2021-01-06 19:22:19,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 19:22:19,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:22:19,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 19:22:19,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 19:22:19,234 INFO L87 Difference]: Start difference. First operand 421 states and 609 transitions. Second operand 5 states. [2021-01-06 19:22:19,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:22:19,354 INFO L93 Difference]: Finished difference Result 1193 states and 1744 transitions. [2021-01-06 19:22:19,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 19:22:19,355 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2021-01-06 19:22:19,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:22:19,362 INFO L225 Difference]: With dead ends: 1193 [2021-01-06 19:22:19,363 INFO L226 Difference]: Without dead ends: 790 [2021-01-06 19:22:19,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-06 19:22:19,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2021-01-06 19:22:19,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 430. [2021-01-06 19:22:19,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2021-01-06 19:22:19,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 613 transitions. [2021-01-06 19:22:19,439 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 613 transitions. Word has length 40 [2021-01-06 19:22:19,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:22:19,440 INFO L481 AbstractCegarLoop]: Abstraction has 430 states and 613 transitions. [2021-01-06 19:22:19,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 19:22:19,440 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 613 transitions. [2021-01-06 19:22:19,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-01-06 19:22:19,442 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:22:19,442 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] [2021-01-06 19:22:19,442 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 19:22:19,442 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:22:19,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:22:19,443 INFO L82 PathProgramCache]: Analyzing trace with hash -892125481, now seen corresponding path program 1 times [2021-01-06 19:22:19,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:22:19,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820884759] [2021-01-06 19:22:19,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:22:19,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:22:19,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:22:19,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820884759] [2021-01-06 19:22:19,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:22:19,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 19:22:19,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697589663] [2021-01-06 19:22:19,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 19:22:19,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:22:19,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 19:22:19,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 19:22:19,505 INFO L87 Difference]: Start difference. First operand 430 states and 613 transitions. Second operand 4 states. [2021-01-06 19:22:19,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:22:19,736 INFO L93 Difference]: Finished difference Result 1588 states and 2260 transitions. [2021-01-06 19:22:19,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 19:22:19,737 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2021-01-06 19:22:19,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:22:19,744 INFO L225 Difference]: With dead ends: 1588 [2021-01-06 19:22:19,744 INFO L226 Difference]: Without dead ends: 1178 [2021-01-06 19:22:19,746 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 [2021-01-06 19:22:19,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1178 states. [2021-01-06 19:22:19,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1178 to 1103. [2021-01-06 19:22:19,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1103 states. [2021-01-06 19:22:19,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1546 transitions. [2021-01-06 19:22:19,826 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1546 transitions. Word has length 40 [2021-01-06 19:22:19,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:22:19,826 INFO L481 AbstractCegarLoop]: Abstraction has 1103 states and 1546 transitions. [2021-01-06 19:22:19,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 19:22:19,827 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1546 transitions. [2021-01-06 19:22:19,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-01-06 19:22:19,828 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:22:19,828 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:22:19,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-06 19:22:19,828 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:22:19,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:22:19,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1178051785, now seen corresponding path program 1 times [2021-01-06 19:22:19,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:22:19,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692261409] [2021-01-06 19:22:19,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:22:19,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:22:19,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:22:19,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692261409] [2021-01-06 19:22:19,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:22:19,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:22:19,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148493321] [2021-01-06 19:22:19,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:22:19,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:22:19,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:22:19,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:22:19,901 INFO L87 Difference]: Start difference. First operand 1103 states and 1546 transitions. Second operand 3 states. [2021-01-06 19:22:20,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:22:20,089 INFO L93 Difference]: Finished difference Result 2554 states and 3575 transitions. [2021-01-06 19:22:20,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:22:20,090 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2021-01-06 19:22:20,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:22:20,098 INFO L225 Difference]: With dead ends: 2554 [2021-01-06 19:22:20,098 INFO L226 Difference]: Without dead ends: 1472 [2021-01-06 19:22:20,101 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:22:20,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1472 states. [2021-01-06 19:22:20,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1472 to 1440. [2021-01-06 19:22:20,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1440 states. [2021-01-06 19:22:20,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 1992 transitions. [2021-01-06 19:22:20,207 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 1992 transitions. Word has length 41 [2021-01-06 19:22:20,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:22:20,207 INFO L481 AbstractCegarLoop]: Abstraction has 1440 states and 1992 transitions. [2021-01-06 19:22:20,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:22:20,208 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 1992 transitions. [2021-01-06 19:22:20,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-01-06 19:22:20,210 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:22:20,210 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:22:20,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-06 19:22:20,211 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:22:20,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:22:20,213 INFO L82 PathProgramCache]: Analyzing trace with hash 2143426552, now seen corresponding path program 1 times [2021-01-06 19:22:20,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:22:20,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984906836] [2021-01-06 19:22:20,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:22:20,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:22:20,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:22:20,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984906836] [2021-01-06 19:22:20,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:22:20,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 19:22:20,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944985980] [2021-01-06 19:22:20,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 19:22:20,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:22:20,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 19:22:20,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 19:22:20,327 INFO L87 Difference]: Start difference. First operand 1440 states and 1992 transitions. Second operand 5 states. [2021-01-06 19:22:20,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:22:20,642 INFO L93 Difference]: Finished difference Result 4243 states and 5974 transitions. [2021-01-06 19:22:20,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 19:22:20,643 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2021-01-06 19:22:20,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:22:20,657 INFO L225 Difference]: With dead ends: 4243 [2021-01-06 19:22:20,657 INFO L226 Difference]: Without dead ends: 2828 [2021-01-06 19:22:20,660 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-06 19:22:20,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2828 states. [2021-01-06 19:22:20,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2828 to 1482. [2021-01-06 19:22:20,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1482 states. [2021-01-06 19:22:20,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1482 states to 1482 states and 2019 transitions. [2021-01-06 19:22:20,789 INFO L78 Accepts]: Start accepts. Automaton has 1482 states and 2019 transitions. Word has length 41 [2021-01-06 19:22:20,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:22:20,789 INFO L481 AbstractCegarLoop]: Abstraction has 1482 states and 2019 transitions. [2021-01-06 19:22:20,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 19:22:20,790 INFO L276 IsEmpty]: Start isEmpty. Operand 1482 states and 2019 transitions. [2021-01-06 19:22:20,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-01-06 19:22:20,790 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:22:20,790 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:22:20,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-06 19:22:20,791 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:22:20,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:22:20,791 INFO L82 PathProgramCache]: Analyzing trace with hash 555078650, now seen corresponding path program 1 times [2021-01-06 19:22:20,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:22:20,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131583087] [2021-01-06 19:22:20,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:22:20,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:22:20,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:22:20,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131583087] [2021-01-06 19:22:20,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:22:20,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 19:22:20,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736775786] [2021-01-06 19:22:20,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 19:22:20,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:22:20,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 19:22:20,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 19:22:20,838 INFO L87 Difference]: Start difference. First operand 1482 states and 2019 transitions. Second operand 4 states. [2021-01-06 19:22:21,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:22:21,210 INFO L93 Difference]: Finished difference Result 5407 states and 7424 transitions. [2021-01-06 19:22:21,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 19:22:21,210 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2021-01-06 19:22:21,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:22:21,233 INFO L225 Difference]: With dead ends: 5407 [2021-01-06 19:22:21,234 INFO L226 Difference]: Without dead ends: 4038 [2021-01-06 19:22:21,240 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 [2021-01-06 19:22:21,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4038 states. [2021-01-06 19:22:21,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4038 to 2334. [2021-01-06 19:22:21,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2334 states. [2021-01-06 19:22:21,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2334 states to 2334 states and 3190 transitions. [2021-01-06 19:22:21,492 INFO L78 Accepts]: Start accepts. Automaton has 2334 states and 3190 transitions. Word has length 41 [2021-01-06 19:22:21,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:22:21,493 INFO L481 AbstractCegarLoop]: Abstraction has 2334 states and 3190 transitions. [2021-01-06 19:22:21,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 19:22:21,493 INFO L276 IsEmpty]: Start isEmpty. Operand 2334 states and 3190 transitions. [2021-01-06 19:22:21,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-01-06 19:22:21,494 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:22:21,494 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:22:21,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-06 19:22:21,495 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:22:21,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:22:21,495 INFO L82 PathProgramCache]: Analyzing trace with hash 2112971018, now seen corresponding path program 1 times [2021-01-06 19:22:21,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:22:21,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846060586] [2021-01-06 19:22:21,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:22:21,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:22:21,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:22:21,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846060586] [2021-01-06 19:22:21,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:22:21,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 19:22:21,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138533370] [2021-01-06 19:22:21,604 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 19:22:21,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:22:21,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 19:22:21,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 19:22:21,606 INFO L87 Difference]: Start difference. First operand 2334 states and 3190 transitions. Second operand 5 states. [2021-01-06 19:22:22,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:22:22,255 INFO L93 Difference]: Finished difference Result 8228 states and 11318 transitions. [2021-01-06 19:22:22,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 19:22:22,256 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2021-01-06 19:22:22,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:22:22,289 INFO L225 Difference]: With dead ends: 8228 [2021-01-06 19:22:22,290 INFO L226 Difference]: Without dead ends: 6506 [2021-01-06 19:22:22,295 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-01-06 19:22:22,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6506 states. [2021-01-06 19:22:22,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6506 to 3825. [2021-01-06 19:22:22,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3825 states. [2021-01-06 19:22:22,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3825 states to 3825 states and 5230 transitions. [2021-01-06 19:22:22,675 INFO L78 Accepts]: Start accepts. Automaton has 3825 states and 5230 transitions. Word has length 48 [2021-01-06 19:22:22,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:22:22,681 INFO L481 AbstractCegarLoop]: Abstraction has 3825 states and 5230 transitions. [2021-01-06 19:22:22,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 19:22:22,681 INFO L276 IsEmpty]: Start isEmpty. Operand 3825 states and 5230 transitions. [2021-01-06 19:22:22,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-01-06 19:22:22,682 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:22:22,682 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] [2021-01-06 19:22:22,683 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-01-06 19:22:22,683 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:22:22,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:22:22,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1420212558, now seen corresponding path program 1 times [2021-01-06 19:22:22,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:22:22,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317985211] [2021-01-06 19:22:22,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:22:22,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:22:22,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:22:22,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317985211] [2021-01-06 19:22:22,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:22:22,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:22:22,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012489137] [2021-01-06 19:22:22,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:22:22,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:22:22,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:22:22,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:22:22,774 INFO L87 Difference]: Start difference. First operand 3825 states and 5230 transitions. Second operand 3 states. [2021-01-06 19:22:23,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:22:23,450 INFO L93 Difference]: Finished difference Result 10814 states and 14716 transitions. [2021-01-06 19:22:23,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:22:23,451 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2021-01-06 19:22:23,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:22:23,493 INFO L225 Difference]: With dead ends: 10814 [2021-01-06 19:22:23,493 INFO L226 Difference]: Without dead ends: 7014 [2021-01-06 19:22:23,502 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:22:23,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7014 states. [2021-01-06 19:22:24,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7014 to 6929. [2021-01-06 19:22:24,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6929 states. [2021-01-06 19:22:24,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6929 states to 6929 states and 9289 transitions. [2021-01-06 19:22:24,136 INFO L78 Accepts]: Start accepts. Automaton has 6929 states and 9289 transitions. Word has length 52 [2021-01-06 19:22:24,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:22:24,136 INFO L481 AbstractCegarLoop]: Abstraction has 6929 states and 9289 transitions. [2021-01-06 19:22:24,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:22:24,136 INFO L276 IsEmpty]: Start isEmpty. Operand 6929 states and 9289 transitions. [2021-01-06 19:22:24,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-01-06 19:22:24,137 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:22:24,138 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] [2021-01-06 19:22:24,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-01-06 19:22:24,138 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:22:24,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:22:24,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1475283929, now seen corresponding path program 1 times [2021-01-06 19:22:24,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:22:24,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037981710] [2021-01-06 19:22:24,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:22:24,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:22:24,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:22:24,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037981710] [2021-01-06 19:22:24,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:22:24,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 19:22:24,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007480203] [2021-01-06 19:22:24,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 19:22:24,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:22:24,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 19:22:24,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 19:22:24,247 INFO L87 Difference]: Start difference. First operand 6929 states and 9289 transitions. Second operand 6 states. [2021-01-06 19:22:25,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:22:25,453 INFO L93 Difference]: Finished difference Result 19477 states and 26259 transitions. [2021-01-06 19:22:25,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 19:22:25,453 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 53 [2021-01-06 19:22:25,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:22:25,514 INFO L225 Difference]: With dead ends: 19477 [2021-01-06 19:22:25,514 INFO L226 Difference]: Without dead ends: 13516 [2021-01-06 19:22:25,527 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-01-06 19:22:25,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13516 states. [2021-01-06 19:22:26,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13516 to 8699. [2021-01-06 19:22:26,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8699 states. [2021-01-06 19:22:26,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8699 states to 8699 states and 11682 transitions. [2021-01-06 19:22:26,399 INFO L78 Accepts]: Start accepts. Automaton has 8699 states and 11682 transitions. Word has length 53 [2021-01-06 19:22:26,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:22:26,400 INFO L481 AbstractCegarLoop]: Abstraction has 8699 states and 11682 transitions. [2021-01-06 19:22:26,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 19:22:26,400 INFO L276 IsEmpty]: Start isEmpty. Operand 8699 states and 11682 transitions. [2021-01-06 19:22:26,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-01-06 19:22:26,402 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:22:26,402 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:22:26,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-01-06 19:22:26,402 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:22:26,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:22:26,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1170295472, now seen corresponding path program 1 times [2021-01-06 19:22:26,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:22:26,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542812766] [2021-01-06 19:22:26,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:22:26,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:22:26,436 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-01-06 19:22:26,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542812766] [2021-01-06 19:22:26,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:22:26,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:22:26,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468444804] [2021-01-06 19:22:26,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:22:26,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:22:26,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:22:26,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:22:26,439 INFO L87 Difference]: Start difference. First operand 8699 states and 11682 transitions. Second operand 3 states. [2021-01-06 19:22:27,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:22:27,328 INFO L93 Difference]: Finished difference Result 25130 states and 33481 transitions. [2021-01-06 19:22:27,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:22:27,329 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2021-01-06 19:22:27,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:22:27,374 INFO L225 Difference]: With dead ends: 25130 [2021-01-06 19:22:27,374 INFO L226 Difference]: Without dead ends: 16456 [2021-01-06 19:22:27,392 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:22:27,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16456 states. [2021-01-06 19:22:28,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16456 to 16450. [2021-01-06 19:22:28,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16450 states. [2021-01-06 19:22:28,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16450 states to 16450 states and 21503 transitions. [2021-01-06 19:22:28,699 INFO L78 Accepts]: Start accepts. Automaton has 16450 states and 21503 transitions. Word has length 57 [2021-01-06 19:22:28,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:22:28,699 INFO L481 AbstractCegarLoop]: Abstraction has 16450 states and 21503 transitions. [2021-01-06 19:22:28,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:22:28,700 INFO L276 IsEmpty]: Start isEmpty. Operand 16450 states and 21503 transitions. [2021-01-06 19:22:28,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-01-06 19:22:28,702 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:22:28,702 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] [2021-01-06 19:22:28,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-01-06 19:22:28,703 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:22:28,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:22:28,703 INFO L82 PathProgramCache]: Analyzing trace with hash 171117839, now seen corresponding path program 1 times [2021-01-06 19:22:28,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:22:28,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817303590] [2021-01-06 19:22:28,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:22:28,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:22:28,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:22:28,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817303590] [2021-01-06 19:22:28,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:22:28,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 19:22:28,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645762632] [2021-01-06 19:22:28,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 19:22:28,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:22:28,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 19:22:28,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 19:22:28,760 INFO L87 Difference]: Start difference. First operand 16450 states and 21503 transitions. Second operand 5 states. [2021-01-06 19:22:30,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:22:30,101 INFO L93 Difference]: Finished difference Result 34582 states and 45486 transitions. [2021-01-06 19:22:30,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 19:22:30,101 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2021-01-06 19:22:30,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:22:30,154 INFO L225 Difference]: With dead ends: 34582 [2021-01-06 19:22:30,155 INFO L226 Difference]: Without dead ends: 21744 [2021-01-06 19:22:30,175 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 19:22:30,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21744 states. [2021-01-06 19:22:31,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21744 to 21614. [2021-01-06 19:22:31,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21614 states. [2021-01-06 19:22:31,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21614 states to 21614 states and 28291 transitions. [2021-01-06 19:22:31,442 INFO L78 Accepts]: Start accepts. Automaton has 21614 states and 28291 transitions. Word has length 58 [2021-01-06 19:22:31,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:22:31,442 INFO L481 AbstractCegarLoop]: Abstraction has 21614 states and 28291 transitions. [2021-01-06 19:22:31,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 19:22:31,442 INFO L276 IsEmpty]: Start isEmpty. Operand 21614 states and 28291 transitions. [2021-01-06 19:22:31,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-01-06 19:22:31,445 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:22:31,445 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:22:31,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-01-06 19:22:31,445 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:22:31,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:22:31,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1927952390, now seen corresponding path program 1 times [2021-01-06 19:22:31,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:22:31,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494433282] [2021-01-06 19:22:31,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:22:31,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:22:31,492 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:22:31,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494433282] [2021-01-06 19:22:31,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:22:31,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 19:22:31,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040156533] [2021-01-06 19:22:31,493 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 19:22:31,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:22:31,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 19:22:31,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 19:22:31,494 INFO L87 Difference]: Start difference. First operand 21614 states and 28291 transitions. Second operand 4 states. [2021-01-06 19:22:33,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:22:33,988 INFO L93 Difference]: Finished difference Result 57325 states and 74908 transitions. [2021-01-06 19:22:33,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 19:22:33,989 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2021-01-06 19:22:33,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:22:34,057 INFO L225 Difference]: With dead ends: 57325 [2021-01-06 19:22:34,058 INFO L226 Difference]: Without dead ends: 35757 [2021-01-06 19:22:34,225 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 19:22:34,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35757 states. [2021-01-06 19:22:36,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35757 to 31601. [2021-01-06 19:22:36,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31601 states. [2021-01-06 19:22:36,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31601 states to 31601 states and 41064 transitions. [2021-01-06 19:22:36,285 INFO L78 Accepts]: Start accepts. Automaton has 31601 states and 41064 transitions. Word has length 59 [2021-01-06 19:22:36,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:22:36,286 INFO L481 AbstractCegarLoop]: Abstraction has 31601 states and 41064 transitions. [2021-01-06 19:22:36,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 19:22:36,286 INFO L276 IsEmpty]: Start isEmpty. Operand 31601 states and 41064 transitions. [2021-01-06 19:22:36,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-01-06 19:22:36,290 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:22:36,291 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] [2021-01-06 19:22:36,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-01-06 19:22:36,291 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:22:36,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:22:36,292 INFO L82 PathProgramCache]: Analyzing trace with hash -348509553, now seen corresponding path program 1 times [2021-01-06 19:22:36,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:22:36,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479491908] [2021-01-06 19:22:36,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:22:36,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:22:36,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:22:36,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479491908] [2021-01-06 19:22:36,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:22:36,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 19:22:36,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140225880] [2021-01-06 19:22:36,469 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 19:22:36,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:22:36,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 19:22:36,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-06 19:22:36,470 INFO L87 Difference]: Start difference. First operand 31601 states and 41064 transitions. Second operand 6 states. [2021-01-06 19:22:41,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:22:41,252 INFO L93 Difference]: Finished difference Result 98909 states and 129770 transitions. [2021-01-06 19:22:41,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 19:22:41,252 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2021-01-06 19:22:41,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:22:41,371 INFO L225 Difference]: With dead ends: 98909 [2021-01-06 19:22:41,372 INFO L226 Difference]: Without dead ends: 74877 [2021-01-06 19:22:41,408 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-01-06 19:22:41,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74877 states. [2021-01-06 19:22:44,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74877 to 43651. [2021-01-06 19:22:44,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43651 states. [2021-01-06 19:22:44,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43651 states to 43651 states and 56948 transitions. [2021-01-06 19:22:44,718 INFO L78 Accepts]: Start accepts. Automaton has 43651 states and 56948 transitions. Word has length 61 [2021-01-06 19:22:44,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:22:44,718 INFO L481 AbstractCegarLoop]: Abstraction has 43651 states and 56948 transitions. [2021-01-06 19:22:44,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 19:22:44,718 INFO L276 IsEmpty]: Start isEmpty. Operand 43651 states and 56948 transitions. [2021-01-06 19:22:44,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-01-06 19:22:44,723 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:22:44,724 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:22:44,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-01-06 19:22:44,724 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:22:44,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:22:44,724 INFO L82 PathProgramCache]: Analyzing trace with hash 807662601, now seen corresponding path program 1 times [2021-01-06 19:22:44,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:22:44,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847381736] [2021-01-06 19:22:44,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:22:44,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:22:44,761 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:22:44,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847381736] [2021-01-06 19:22:44,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:22:44,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:22:44,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233441820] [2021-01-06 19:22:44,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:22:44,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:22:44,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:22:44,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:22:44,764 INFO L87 Difference]: Start difference. First operand 43651 states and 56948 transitions. Second operand 3 states. [2021-01-06 19:22:47,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:22:47,423 INFO L93 Difference]: Finished difference Result 82740 states and 108197 transitions. [2021-01-06 19:22:47,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:22:47,425 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2021-01-06 19:22:47,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:22:47,506 INFO L225 Difference]: With dead ends: 82740 [2021-01-06 19:22:47,506 INFO L226 Difference]: Without dead ends: 43655 [2021-01-06 19:22:47,544 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:22:47,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43655 states. [2021-01-06 19:22:50,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43655 to 43651. [2021-01-06 19:22:50,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43651 states. [2021-01-06 19:22:50,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43651 states to 43651 states and 56591 transitions. [2021-01-06 19:22:50,413 INFO L78 Accepts]: Start accepts. Automaton has 43651 states and 56591 transitions. Word has length 65 [2021-01-06 19:22:50,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:22:50,414 INFO L481 AbstractCegarLoop]: Abstraction has 43651 states and 56591 transitions. [2021-01-06 19:22:50,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:22:50,414 INFO L276 IsEmpty]: Start isEmpty. Operand 43651 states and 56591 transitions. [2021-01-06 19:22:50,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-01-06 19:22:50,418 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:22:50,419 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:22:50,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-01-06 19:22:50,419 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:22:50,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:22:50,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1009486535, now seen corresponding path program 1 times [2021-01-06 19:22:50,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:22:50,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217178645] [2021-01-06 19:22:50,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:22:50,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:22:50,440 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-01-06 19:22:50,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217178645] [2021-01-06 19:22:50,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:22:50,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:22:50,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280838833] [2021-01-06 19:22:50,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:22:50,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:22:50,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:22:50,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:22:50,443 INFO L87 Difference]: Start difference. First operand 43651 states and 56591 transitions. Second operand 3 states. [2021-01-06 19:22:52,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:22:52,981 INFO L93 Difference]: Finished difference Result 46535 states and 60111 transitions. [2021-01-06 19:22:52,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:22:52,982 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2021-01-06 19:22:52,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:22:53,024 INFO L225 Difference]: With dead ends: 46535 [2021-01-06 19:22:53,024 INFO L226 Difference]: Without dead ends: 43613 [2021-01-06 19:22:53,032 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:22:53,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43613 states. [2021-01-06 19:22:55,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43613 to 43613. [2021-01-06 19:22:55,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43613 states. [2021-01-06 19:22:55,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43613 states to 43613 states and 56551 transitions. [2021-01-06 19:22:55,584 INFO L78 Accepts]: Start accepts. Automaton has 43613 states and 56551 transitions. Word has length 65 [2021-01-06 19:22:55,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:22:55,584 INFO L481 AbstractCegarLoop]: Abstraction has 43613 states and 56551 transitions. [2021-01-06 19:22:55,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:22:55,585 INFO L276 IsEmpty]: Start isEmpty. Operand 43613 states and 56551 transitions. [2021-01-06 19:22:55,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-01-06 19:22:55,589 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:22:55,589 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:22:55,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-01-06 19:22:55,590 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:22:55,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:22:55,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1172878516, now seen corresponding path program 1 times [2021-01-06 19:22:55,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:22:55,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177955962] [2021-01-06 19:22:55,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:22:55,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:22:55,623 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:22:55,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177955962] [2021-01-06 19:22:55,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:22:55,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 19:22:55,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114259449] [2021-01-06 19:22:55,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 19:22:55,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:22:55,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 19:22:55,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 19:22:55,625 INFO L87 Difference]: Start difference. First operand 43613 states and 56551 transitions. Second operand 4 states. [2021-01-06 19:22:58,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:22:58,633 INFO L93 Difference]: Finished difference Result 87652 states and 113597 transitions. [2021-01-06 19:22:58,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 19:22:58,634 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2021-01-06 19:22:58,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:22:58,679 INFO L225 Difference]: With dead ends: 87652 [2021-01-06 19:22:58,679 INFO L226 Difference]: Without dead ends: 44085 [2021-01-06 19:22:58,705 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 19:22:58,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44085 states. [2021-01-06 19:23:01,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44085 to 43613. [2021-01-06 19:23:01,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43613 states. [2021-01-06 19:23:01,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43613 states to 43613 states and 55711 transitions. [2021-01-06 19:23:01,530 INFO L78 Accepts]: Start accepts. Automaton has 43613 states and 55711 transitions. Word has length 66 [2021-01-06 19:23:01,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:23:01,530 INFO L481 AbstractCegarLoop]: Abstraction has 43613 states and 55711 transitions. [2021-01-06 19:23:01,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 19:23:01,530 INFO L276 IsEmpty]: Start isEmpty. Operand 43613 states and 55711 transitions. [2021-01-06 19:23:01,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-01-06 19:23:01,534 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:23:01,534 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:23:01,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-01-06 19:23:01,535 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:23:01,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:23:01,535 INFO L82 PathProgramCache]: Analyzing trace with hash 2075083770, now seen corresponding path program 1 times [2021-01-06 19:23:01,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:23:01,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418052519] [2021-01-06 19:23:01,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:23:01,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:23:01,574 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:23:01,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418052519] [2021-01-06 19:23:01,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:23:01,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 19:23:01,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469714835] [2021-01-06 19:23:01,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 19:23:01,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:23:01,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 19:23:01,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 19:23:01,577 INFO L87 Difference]: Start difference. First operand 43613 states and 55711 transitions. Second operand 4 states. [2021-01-06 19:23:04,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:23:04,895 INFO L93 Difference]: Finished difference Result 88332 states and 112741 transitions. [2021-01-06 19:23:04,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 19:23:04,895 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2021-01-06 19:23:04,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:23:04,957 INFO L225 Difference]: With dead ends: 88332 [2021-01-06 19:23:04,957 INFO L226 Difference]: Without dead ends: 44380 [2021-01-06 19:23:04,984 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 19:23:05,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44380 states. [2021-01-06 19:23:07,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44380 to 42903. [2021-01-06 19:23:07,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42903 states. [2021-01-06 19:23:07,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42903 states to 42903 states and 54372 transitions. [2021-01-06 19:23:07,775 INFO L78 Accepts]: Start accepts. Automaton has 42903 states and 54372 transitions. Word has length 68 [2021-01-06 19:23:07,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:23:07,775 INFO L481 AbstractCegarLoop]: Abstraction has 42903 states and 54372 transitions. [2021-01-06 19:23:07,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 19:23:07,775 INFO L276 IsEmpty]: Start isEmpty. Operand 42903 states and 54372 transitions. [2021-01-06 19:23:07,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-01-06 19:23:07,778 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:23:07,779 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:23:07,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-01-06 19:23:07,779 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:23:07,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:23:07,780 INFO L82 PathProgramCache]: Analyzing trace with hash 556975009, now seen corresponding path program 1 times [2021-01-06 19:23:07,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:23:07,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068743019] [2021-01-06 19:23:07,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:23:07,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:23:07,831 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:23:07,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068743019] [2021-01-06 19:23:07,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:23:07,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 19:23:07,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447260206] [2021-01-06 19:23:07,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 19:23:07,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:23:07,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 19:23:07,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 19:23:07,833 INFO L87 Difference]: Start difference. First operand 42903 states and 54372 transitions. Second operand 5 states. [2021-01-06 19:23:14,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:23:14,346 INFO L93 Difference]: Finished difference Result 130746 states and 166486 transitions. [2021-01-06 19:23:14,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 19:23:14,346 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2021-01-06 19:23:14,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:23:14,465 INFO L225 Difference]: With dead ends: 130746 [2021-01-06 19:23:14,465 INFO L226 Difference]: Without dead ends: 96122 [2021-01-06 19:23:14,490 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-01-06 19:23:14,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96122 states. [2021-01-06 19:23:18,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96122 to 47799. [2021-01-06 19:23:18,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47799 states. [2021-01-06 19:23:18,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47799 states to 47799 states and 60509 transitions. [2021-01-06 19:23:18,167 INFO L78 Accepts]: Start accepts. Automaton has 47799 states and 60509 transitions. Word has length 69 [2021-01-06 19:23:18,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:23:18,168 INFO L481 AbstractCegarLoop]: Abstraction has 47799 states and 60509 transitions. [2021-01-06 19:23:18,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 19:23:18,168 INFO L276 IsEmpty]: Start isEmpty. Operand 47799 states and 60509 transitions. [2021-01-06 19:23:18,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-01-06 19:23:18,175 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:23:18,175 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:23:18,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-01-06 19:23:18,176 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:23:18,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:23:18,176 INFO L82 PathProgramCache]: Analyzing trace with hash -636342002, now seen corresponding path program 1 times [2021-01-06 19:23:18,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:23:18,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794441732] [2021-01-06 19:23:18,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:23:18,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:23:18,209 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:23:18,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794441732] [2021-01-06 19:23:18,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:23:18,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:23:18,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456153277] [2021-01-06 19:23:18,210 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:23:18,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:23:18,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:23:18,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:23:18,211 INFO L87 Difference]: Start difference. First operand 47799 states and 60509 transitions. Second operand 3 states. [2021-01-06 19:23:23,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:23:23,742 INFO L93 Difference]: Finished difference Result 126093 states and 160418 transitions. [2021-01-06 19:23:23,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:23:23,742 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2021-01-06 19:23:23,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:23:23,848 INFO L225 Difference]: With dead ends: 126093 [2021-01-06 19:23:23,849 INFO L226 Difference]: Without dead ends: 81633 [2021-01-06 19:23:23,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:23:23,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81633 states. [2021-01-06 19:23:28,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81633 to 73237. [2021-01-06 19:23:28,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73237 states. [2021-01-06 19:23:28,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73237 states to 73237 states and 93375 transitions. [2021-01-06 19:23:28,973 INFO L78 Accepts]: Start accepts. Automaton has 73237 states and 93375 transitions. Word has length 85 [2021-01-06 19:23:28,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:23:28,973 INFO L481 AbstractCegarLoop]: Abstraction has 73237 states and 93375 transitions. [2021-01-06 19:23:28,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:23:28,973 INFO L276 IsEmpty]: Start isEmpty. Operand 73237 states and 93375 transitions. [2021-01-06 19:23:28,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-01-06 19:23:28,987 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:23:28,988 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:23:28,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-01-06 19:23:28,988 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:23:28,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:23:28,988 INFO L82 PathProgramCache]: Analyzing trace with hash 929392569, now seen corresponding path program 1 times [2021-01-06 19:23:28,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:23:28,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461447871] [2021-01-06 19:23:28,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:23:29,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:23:29,040 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-01-06 19:23:29,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461447871] [2021-01-06 19:23:29,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:23:29,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 19:23:29,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997614750] [2021-01-06 19:23:29,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 19:23:29,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:23:29,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 19:23:29,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 19:23:29,042 INFO L87 Difference]: Start difference. First operand 73237 states and 93375 transitions. Second operand 5 states. [2021-01-06 19:23:39,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:23:39,787 INFO L93 Difference]: Finished difference Result 228402 states and 289207 transitions. [2021-01-06 19:23:39,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 19:23:39,788 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2021-01-06 19:23:39,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:23:40,033 INFO L225 Difference]: With dead ends: 228402 [2021-01-06 19:23:40,034 INFO L226 Difference]: Without dead ends: 155211 [2021-01-06 19:23:40,099 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-01-06 19:23:40,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155211 states. [2021-01-06 19:23:49,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155211 to 130982. [2021-01-06 19:23:49,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130982 states. [2021-01-06 19:23:49,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130982 states to 130982 states and 162011 transitions. [2021-01-06 19:23:49,750 INFO L78 Accepts]: Start accepts. Automaton has 130982 states and 162011 transitions. Word has length 98 [2021-01-06 19:23:49,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:23:49,750 INFO L481 AbstractCegarLoop]: Abstraction has 130982 states and 162011 transitions. [2021-01-06 19:23:49,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 19:23:49,751 INFO L276 IsEmpty]: Start isEmpty. Operand 130982 states and 162011 transitions. [2021-01-06 19:23:49,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-01-06 19:23:49,776 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:23:49,776 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:23:49,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-01-06 19:23:49,776 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:23:49,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:23:49,776 INFO L82 PathProgramCache]: Analyzing trace with hash -424178660, now seen corresponding path program 1 times [2021-01-06 19:23:49,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:23:49,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910375325] [2021-01-06 19:23:49,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:23:49,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:23:49,830 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-01-06 19:23:49,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910375325] [2021-01-06 19:23:49,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:23:49,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 19:23:49,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13695303] [2021-01-06 19:23:49,831 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 19:23:49,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:23:49,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 19:23:49,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 19:23:49,835 INFO L87 Difference]: Start difference. First operand 130982 states and 162011 transitions. Second operand 5 states. [2021-01-06 19:23:55,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:23:55,693 INFO L93 Difference]: Finished difference Result 203946 states and 253728 transitions. [2021-01-06 19:23:55,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 19:23:55,693 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2021-01-06 19:23:55,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:23:55,787 INFO L225 Difference]: With dead ends: 203946 [2021-01-06 19:23:55,787 INFO L226 Difference]: Without dead ends: 73010 [2021-01-06 19:23:55,855 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-01-06 19:23:55,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73010 states. [2021-01-06 19:24:00,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73010 to 64376. [2021-01-06 19:24:00,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64376 states. [2021-01-06 19:24:00,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64376 states to 64376 states and 80869 transitions. [2021-01-06 19:24:00,860 INFO L78 Accepts]: Start accepts. Automaton has 64376 states and 80869 transitions. Word has length 100 [2021-01-06 19:24:00,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:24:00,860 INFO L481 AbstractCegarLoop]: Abstraction has 64376 states and 80869 transitions. [2021-01-06 19:24:00,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 19:24:00,860 INFO L276 IsEmpty]: Start isEmpty. Operand 64376 states and 80869 transitions. [2021-01-06 19:24:00,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-01-06 19:24:00,867 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:24:00,868 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:24:00,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-01-06 19:24:00,868 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:24:00,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:24:00,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1632792131, now seen corresponding path program 1 times [2021-01-06 19:24:00,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:24:00,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936941662] [2021-01-06 19:24:00,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:24:00,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:24:00,899 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-01-06 19:24:00,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936941662] [2021-01-06 19:24:00,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:24:00,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:24:00,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686549292] [2021-01-06 19:24:00,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:24:00,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:24:00,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:24:00,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:24:00,902 INFO L87 Difference]: Start difference. First operand 64376 states and 80869 transitions. Second operand 3 states. [2021-01-06 19:24:05,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:24:05,903 INFO L93 Difference]: Finished difference Result 128362 states and 161283 transitions. [2021-01-06 19:24:05,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:24:05,904 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 109 [2021-01-06 19:24:05,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:24:05,984 INFO L225 Difference]: With dead ends: 128362 [2021-01-06 19:24:05,984 INFO L226 Difference]: Without dead ends: 64353 [2021-01-06 19:24:06,025 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:24:06,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64353 states. [2021-01-06 19:24:11,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64353 to 64353. [2021-01-06 19:24:11,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64353 states. [2021-01-06 19:24:11,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64353 states to 64353 states and 80845 transitions. [2021-01-06 19:24:11,135 INFO L78 Accepts]: Start accepts. Automaton has 64353 states and 80845 transitions. Word has length 109 [2021-01-06 19:24:11,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:24:11,136 INFO L481 AbstractCegarLoop]: Abstraction has 64353 states and 80845 transitions. [2021-01-06 19:24:11,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:24:11,136 INFO L276 IsEmpty]: Start isEmpty. Operand 64353 states and 80845 transitions. [2021-01-06 19:24:11,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-01-06 19:24:11,144 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:24:11,144 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:24:11,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-01-06 19:24:11,144 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:24:11,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:24:11,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1476464464, now seen corresponding path program 1 times [2021-01-06 19:24:11,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:24:11,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478147877] [2021-01-06 19:24:11,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:24:11,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:24:11,196 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-01-06 19:24:11,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478147877] [2021-01-06 19:24:11,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:24:11,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:24:11,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991930354] [2021-01-06 19:24:11,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:24:11,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:24:11,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:24:11,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:24:11,198 INFO L87 Difference]: Start difference. First operand 64353 states and 80845 transitions. Second operand 3 states. [2021-01-06 19:24:16,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:24:16,247 INFO L93 Difference]: Finished difference Result 127801 states and 160643 transitions. [2021-01-06 19:24:16,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:24:16,247 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 112 [2021-01-06 19:24:16,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:24:16,322 INFO L225 Difference]: With dead ends: 127801 [2021-01-06 19:24:16,323 INFO L226 Difference]: Without dead ends: 63714 [2021-01-06 19:24:16,370 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:24:16,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63714 states. [2021-01-06 19:24:21,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63714 to 63692. [2021-01-06 19:24:21,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63692 states. [2021-01-06 19:24:21,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63692 states to 63692 states and 80083 transitions. [2021-01-06 19:24:21,373 INFO L78 Accepts]: Start accepts. Automaton has 63692 states and 80083 transitions. Word has length 112 [2021-01-06 19:24:21,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:24:21,374 INFO L481 AbstractCegarLoop]: Abstraction has 63692 states and 80083 transitions. [2021-01-06 19:24:21,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:24:21,374 INFO L276 IsEmpty]: Start isEmpty. Operand 63692 states and 80083 transitions. [2021-01-06 19:24:21,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-01-06 19:24:21,385 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:24:21,385 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:24:21,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-01-06 19:24:21,385 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:24:21,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:24:21,386 INFO L82 PathProgramCache]: Analyzing trace with hash -2033385646, now seen corresponding path program 1 times [2021-01-06 19:24:21,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:24:21,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126656747] [2021-01-06 19:24:21,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:24:21,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:24:21,463 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-01-06 19:24:21,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126656747] [2021-01-06 19:24:21,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:24:21,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 19:24:21,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920417513] [2021-01-06 19:24:21,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 19:24:21,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:24:21,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 19:24:21,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 19:24:21,466 INFO L87 Difference]: Start difference. First operand 63692 states and 80083 transitions. Second operand 5 states. [2021-01-06 19:24:31,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:24:31,775 INFO L93 Difference]: Finished difference Result 190885 states and 239435 transitions. [2021-01-06 19:24:31,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 19:24:31,775 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2021-01-06 19:24:31,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:24:31,965 INFO L225 Difference]: With dead ends: 190885 [2021-01-06 19:24:31,965 INFO L226 Difference]: Without dead ends: 123357 [2021-01-06 19:24:32,021 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-01-06 19:24:32,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123357 states. [2021-01-06 19:24:41,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123357 to 119958. [2021-01-06 19:24:41,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119958 states. [2021-01-06 19:24:42,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119958 states to 119958 states and 149988 transitions. [2021-01-06 19:24:42,042 INFO L78 Accepts]: Start accepts. Automaton has 119958 states and 149988 transitions. Word has length 123 [2021-01-06 19:24:42,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:24:42,042 INFO L481 AbstractCegarLoop]: Abstraction has 119958 states and 149988 transitions. [2021-01-06 19:24:42,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 19:24:42,042 INFO L276 IsEmpty]: Start isEmpty. Operand 119958 states and 149988 transitions. [2021-01-06 19:24:42,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-01-06 19:24:42,051 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:24:42,051 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:24:42,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-01-06 19:24:42,052 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:24:42,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:24:42,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1415017880, now seen corresponding path program 1 times [2021-01-06 19:24:42,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:24:42,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768483857] [2021-01-06 19:24:42,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:24:42,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:24:42,097 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:24:42,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768483857] [2021-01-06 19:24:42,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:24:42,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:24:42,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538380333] [2021-01-06 19:24:42,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:24:42,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:24:42,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:24:42,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:24:42,099 INFO L87 Difference]: Start difference. First operand 119958 states and 149988 transitions. Second operand 3 states. [2021-01-06 19:24:52,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:24:52,549 INFO L93 Difference]: Finished difference Result 224692 states and 281794 transitions. [2021-01-06 19:24:52,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:24:52,550 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 124 [2021-01-06 19:24:52,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:24:52,853 INFO L225 Difference]: With dead ends: 224692 [2021-01-06 19:24:52,853 INFO L226 Difference]: Without dead ends: 123211 [2021-01-06 19:24:52,979 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:24:53,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123211 states.