/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/pipeline.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 19:24:28,431 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 19:24:28,433 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 19:24:28,469 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 19:24:28,470 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 19:24:28,471 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 19:24:28,473 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 19:24:28,476 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 19:24:28,478 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 19:24:28,479 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 19:24:28,480 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 19:24:28,482 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 19:24:28,482 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 19:24:28,484 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 19:24:28,485 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 19:24:28,486 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 19:24:28,488 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 19:24:28,489 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 19:24:28,494 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 19:24:28,499 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 19:24:28,505 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 19:24:28,519 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 19:24:28,520 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 19:24:28,521 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 19:24:28,530 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-06 19:24:28,530 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-06 19:24:28,530 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-06 19:24:28,533 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-06 19:24:28,534 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-06 19:24:28,537 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-06 19:24:28,537 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 19:24:28,538 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 19:24:28,541 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 19:24:28,542 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 19:24:28,543 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 19:24:28,543 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 19:24:28,545 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 19:24:28,545 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 19:24:28,546 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 19:24:28,547 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 19:24:28,548 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 19:24:28,553 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 19:24:28,604 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 19:24:28,605 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 19:24:28,607 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 19:24:28,608 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 19:24:28,608 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 19:24:28,608 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 19:24:28,608 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 19:24:28,609 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 19:24:28,609 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 19:24:28,611 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 19:24:28,611 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 19:24:28,611 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 19:24:28,611 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 19:24:28,611 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 19:24:28,612 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 19:24:28,612 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 19:24:28,613 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 19:24:28,613 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 19:24:28,614 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 19:24:28,614 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 19:24:28,614 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 19:24:28,614 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 19:24:28,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 19:24:28,615 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 19:24:28,615 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 19:24:28,615 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 19:24:28,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 19:24:29,019 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 19:24:29,022 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 19:24:29,023 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 19:24:29,024 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 19:24:29,025 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/pipeline.cil-2.c [2021-01-06 19:24:29,106 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ef30d54f8/cec09ed6435c424c89a199823048c3ff/FLAG8f7fda089 [2021-01-06 19:24:29,848 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 19:24:29,849 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/systemc/pipeline.cil-2.c [2021-01-06 19:24:29,865 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ef30d54f8/cec09ed6435c424c89a199823048c3ff/FLAG8f7fda089 [2021-01-06 19:24:30,189 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ef30d54f8/cec09ed6435c424c89a199823048c3ff [2021-01-06 19:24:30,194 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 19:24:30,203 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 19:24:30,205 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 19:24:30,206 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 19:24:30,211 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 19:24:30,213 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 07:24:30" (1/1) ... [2021-01-06 19:24:30,216 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25fc9e20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:24:30, skipping insertion in model container [2021-01-06 19:24:30,217 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 07:24:30" (1/1) ... [2021-01-06 19:24:30,226 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 19:24:30,306 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 19:24:30,458 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/pipeline.cil-2.c[335,348] left hand side expression in assignment: lhs: VariableLHS[~main_in1_val_t~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_in1_req_up~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_in2_val_t~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_in2_req_up~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a~1,] left hand side expression in assignment: lhs: VariableLHS[~b~1,] left hand side expression in assignment: lhs: VariableLHS[~main_sum_val_t~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_sum_req_up~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_diff_val_t~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_diff_req_up~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a~2,] left hand side expression in assignment: lhs: VariableLHS[~b~2,] left hand side expression in assignment: lhs: VariableLHS[~main_pres_val_t~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_pres_req_up~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~main_dbl_val_t~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_dbl_req_up~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a~3,] left hand side expression in assignment: lhs: VariableLHS[~b~3,] left hand side expression in assignment: lhs: VariableLHS[~main_zero_val_t~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_zero_req_up~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~D_z~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~N_generate_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~S1_addsub_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~S2_presdbl_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~S3_zero_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~D_print_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~kernel_st~0,] left hand side expression in assignment: lhs: VariableLHS[~main_in1_val~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_in1_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_in1_req_up~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_in2_val~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_in2_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_in2_req_up~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_sum_val~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_sum_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_sum_req_up~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_diff_val~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_diff_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_diff_req_up~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_pres_val~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_pres_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_pres_req_up~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_dbl_val~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_dbl_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_dbl_req_up~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_zero_val~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_zero_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_zero_req_up~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_clk_val~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_clk_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_clk_pos_edge~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_clk_neg_edge~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_clk_neg_edge~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_clk_pos_edge~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_clk_req_up~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~N_generate_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~N_generate_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~S1_addsub_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~S1_addsub_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~S2_presdbl_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~S2_presdbl_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~S3_zero_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~S3_zero_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~D_print_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~D_print_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_in1_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_in2_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_sum_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_diff_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_pres_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_dbl_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_zero_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_clk_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_clk_pos_edge~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_clk_neg_edge~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~N_generate_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~S1_addsub_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~S2_presdbl_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~S3_zero_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~D_print_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_in1_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_in2_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_sum_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_diff_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_pres_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_dbl_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_zero_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_clk_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_clk_pos_edge~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_clk_neg_edge~0,GLOBAL] 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[~main_in1_val~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_in1_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_in1_req_up~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_in2_val~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_in2_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_in2_req_up~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_sum_val~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_sum_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_sum_req_up~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_diff_val~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_diff_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_diff_req_up~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_pres_val~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_pres_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_pres_req_up~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_dbl_val~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_dbl_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_dbl_req_up~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_zero_val~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_zero_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_zero_req_up~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_clk_val~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_clk_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_clk_pos_edge~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_clk_neg_edge~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_clk_neg_edge~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_clk_pos_edge~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_clk_req_up~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~kernel_st~0,] left hand side expression in assignment: lhs: VariableLHS[~main_in1_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_in2_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_sum_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_diff_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_pres_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_dbl_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_zero_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_clk_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_clk_pos_edge~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_clk_neg_edge~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~N_generate_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~S1_addsub_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~S2_presdbl_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~S3_zero_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~D_print_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_in1_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_in2_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_sum_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_diff_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_pres_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_dbl_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_zero_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_clk_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_clk_pos_edge~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_clk_neg_edge~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_in1_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_in1_req_up~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_in2_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_in2_req_up~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_diff_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_diff_req_up~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_sum_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_sum_req_up~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_pres_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_pres_req_up~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_dbl_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_dbl_req_up~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_zero_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_zero_req_up~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_clk_val~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_clk_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_clk_req_up~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_clk_pos_edge~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_clk_neg_edge~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~count~0,] left hand side expression in assignment: lhs: VariableLHS[~N_generate_i~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~S1_addsub_i~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~S2_presdbl_i~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~S3_zero_i~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~D_print_i~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_clk_val_t~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_clk_req_up~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~count~0,] left hand side expression in assignment: lhs: VariableLHS[~main_clk_val_t~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_clk_req_up~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__retres2~0,] [2021-01-06 19:24:30,554 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 19:24:30,569 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 19:24:30,590 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/pipeline.cil-2.c[335,348] left hand side expression in assignment: lhs: VariableLHS[~main_in1_val_t~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_in1_req_up~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_in2_val_t~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_in2_req_up~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a~1,] left hand side expression in assignment: lhs: VariableLHS[~b~1,] left hand side expression in assignment: lhs: VariableLHS[~main_sum_val_t~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_sum_req_up~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_diff_val_t~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_diff_req_up~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a~2,] left hand side expression in assignment: lhs: VariableLHS[~b~2,] left hand side expression in assignment: lhs: VariableLHS[~main_pres_val_t~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_pres_req_up~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~main_dbl_val_t~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_dbl_req_up~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a~3,] left hand side expression in assignment: lhs: VariableLHS[~b~3,] left hand side expression in assignment: lhs: VariableLHS[~main_zero_val_t~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_zero_req_up~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~D_z~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~N_generate_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~S1_addsub_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~S2_presdbl_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~S3_zero_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~D_print_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~kernel_st~0,] left hand side expression in assignment: lhs: VariableLHS[~main_in1_val~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_in1_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_in1_req_up~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_in2_val~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_in2_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_in2_req_up~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_sum_val~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_sum_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_sum_req_up~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_diff_val~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_diff_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_diff_req_up~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_pres_val~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_pres_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_pres_req_up~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_dbl_val~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_dbl_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_dbl_req_up~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_zero_val~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_zero_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_zero_req_up~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_clk_val~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_clk_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_clk_pos_edge~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_clk_neg_edge~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_clk_neg_edge~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_clk_pos_edge~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_clk_req_up~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~N_generate_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~N_generate_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~S1_addsub_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~S1_addsub_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~S2_presdbl_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~S2_presdbl_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~S3_zero_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~S3_zero_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~D_print_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~D_print_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_in1_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_in2_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_sum_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_diff_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_pres_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_dbl_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_zero_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_clk_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_clk_pos_edge~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_clk_neg_edge~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~N_generate_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~S1_addsub_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~S2_presdbl_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~S3_zero_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~D_print_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_in1_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_in2_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_sum_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_diff_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_pres_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_dbl_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_zero_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_clk_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_clk_pos_edge~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_clk_neg_edge~0,GLOBAL] 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[~main_in1_val~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_in1_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_in1_req_up~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_in2_val~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_in2_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_in2_req_up~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_sum_val~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_sum_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_sum_req_up~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_diff_val~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_diff_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_diff_req_up~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_pres_val~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_pres_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_pres_req_up~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_dbl_val~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_dbl_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_dbl_req_up~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_zero_val~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_zero_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_zero_req_up~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_clk_val~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_clk_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_clk_pos_edge~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_clk_neg_edge~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_clk_neg_edge~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_clk_pos_edge~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_clk_req_up~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~kernel_st~0,] left hand side expression in assignment: lhs: VariableLHS[~main_in1_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_in2_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_sum_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_diff_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_pres_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_dbl_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_zero_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_clk_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_clk_pos_edge~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_clk_neg_edge~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~N_generate_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~S1_addsub_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~S2_presdbl_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~S3_zero_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~D_print_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_in1_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_in2_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_sum_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_diff_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_pres_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_dbl_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_zero_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_clk_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_clk_pos_edge~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_clk_neg_edge~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_in1_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_in1_req_up~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_in2_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_in2_req_up~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_diff_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_diff_req_up~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_sum_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_sum_req_up~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_pres_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_pres_req_up~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_dbl_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_dbl_req_up~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_zero_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_zero_req_up~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_clk_val~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_clk_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_clk_req_up~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_clk_pos_edge~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_clk_neg_edge~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~count~0,] left hand side expression in assignment: lhs: VariableLHS[~N_generate_i~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~S1_addsub_i~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~S2_presdbl_i~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~S3_zero_i~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~D_print_i~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_clk_val_t~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_clk_req_up~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~count~0,] left hand side expression in assignment: lhs: VariableLHS[~main_clk_val_t~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main_clk_req_up~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__retres2~0,] [2021-01-06 19:24:30,649 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 19:24:30,672 INFO L208 MainTranslator]: Completed translation [2021-01-06 19:24:30,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:24:30 WrapperNode [2021-01-06 19:24:30,673 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 19:24:30,674 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 19:24:30,675 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 19:24:30,675 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 19:24:30,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:24:30" (1/1) ... [2021-01-06 19:24:30,698 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:24:30" (1/1) ... [2021-01-06 19:24:30,759 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 19:24:30,760 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 19:24:30,760 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 19:24:30,760 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 19:24:30,772 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:24:30" (1/1) ... [2021-01-06 19:24:30,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:24:30" (1/1) ... [2021-01-06 19:24:30,778 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:24:30" (1/1) ... [2021-01-06 19:24:30,779 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:24:30" (1/1) ... [2021-01-06 19:24:30,799 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:24:30" (1/1) ... [2021-01-06 19:24:30,825 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:24:30" (1/1) ... [2021-01-06 19:24:30,840 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:24:30" (1/1) ... [2021-01-06 19:24:30,848 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 19:24:30,849 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 19:24:30,849 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 19:24:30,850 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 19:24:30,851 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:24:30" (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 19:24:30,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 19:24:30,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 19:24:30,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 19:24:30,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 19:24:32,519 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 19:24:32,520 INFO L299 CfgBuilder]: Removed 55 assume(true) statements. [2021-01-06 19:24:32,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 07:24:32 BoogieIcfgContainer [2021-01-06 19:24:32,523 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 19:24:32,525 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 19:24:32,525 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 19:24:32,529 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 19:24:32,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 07:24:30" (1/3) ... [2021-01-06 19:24:32,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@107f108a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 07:24:32, skipping insertion in model container [2021-01-06 19:24:32,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:24:30" (2/3) ... [2021-01-06 19:24:32,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@107f108a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 07:24:32, skipping insertion in model container [2021-01-06 19:24:32,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 07:24:32" (3/3) ... [2021-01-06 19:24:32,533 INFO L111 eAbstractionObserver]: Analyzing ICFG pipeline.cil-2.c [2021-01-06 19:24:32,540 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 19:24:32,546 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 19:24:32,567 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 19:24:32,599 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 19:24:32,600 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 19:24:32,600 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 19:24:32,600 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 19:24:32,600 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 19:24:32,600 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 19:24:32,601 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 19:24:32,601 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 19:24:32,627 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states. [2021-01-06 19:24:32,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-01-06 19:24:32,641 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:24:32,642 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:24:32,643 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:24:32,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:24:32,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1155336598, now seen corresponding path program 1 times [2021-01-06 19:24:32,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:24:32,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148282549] [2021-01-06 19:24:32,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:24:32,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:24:32,995 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 19:24:32,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148282549] [2021-01-06 19:24:32,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:24:32,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 19:24:32,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187217865] [2021-01-06 19:24:33,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 19:24:33,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:24:33,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 19:24:33,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 19:24:33,023 INFO L87 Difference]: Start difference. First operand 405 states. Second operand 4 states. [2021-01-06 19:24:33,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:24:33,236 INFO L93 Difference]: Finished difference Result 1135 states and 2109 transitions. [2021-01-06 19:24:33,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 19:24:33,238 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 86 [2021-01-06 19:24:33,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:24:33,262 INFO L225 Difference]: With dead ends: 1135 [2021-01-06 19:24:33,262 INFO L226 Difference]: Without dead ends: 733 [2021-01-06 19:24:33,268 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 19:24:33,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2021-01-06 19:24:33,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 731. [2021-01-06 19:24:33,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 731 states. [2021-01-06 19:24:33,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 1324 transitions. [2021-01-06 19:24:33,367 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 1324 transitions. Word has length 86 [2021-01-06 19:24:33,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:24:33,367 INFO L481 AbstractCegarLoop]: Abstraction has 731 states and 1324 transitions. [2021-01-06 19:24:33,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 19:24:33,368 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 1324 transitions. [2021-01-06 19:24:33,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-01-06 19:24:33,379 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:24:33,379 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:24:33,380 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 19:24:33,380 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:24:33,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:24:33,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1210635410, now seen corresponding path program 1 times [2021-01-06 19:24:33,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:24:33,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34545600] [2021-01-06 19:24:33,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:24:33,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:24:33,577 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 19:24:33,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34545600] [2021-01-06 19:24:33,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:24:33,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 19:24:33,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859202047] [2021-01-06 19:24:33,585 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 19:24:33,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:24:33,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 19:24:33,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 19:24:33,587 INFO L87 Difference]: Start difference. First operand 731 states and 1324 transitions. Second operand 4 states. [2021-01-06 19:24:33,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:24:33,709 INFO L93 Difference]: Finished difference Result 1437 states and 2606 transitions. [2021-01-06 19:24:33,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 19:24:33,710 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 180 [2021-01-06 19:24:33,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:24:33,714 INFO L225 Difference]: With dead ends: 1437 [2021-01-06 19:24:33,715 INFO L226 Difference]: Without dead ends: 733 [2021-01-06 19:24:33,721 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 19:24:33,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2021-01-06 19:24:33,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 731. [2021-01-06 19:24:33,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 731 states. [2021-01-06 19:24:33,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 1319 transitions. [2021-01-06 19:24:33,779 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 1319 transitions. Word has length 180 [2021-01-06 19:24:33,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:24:33,782 INFO L481 AbstractCegarLoop]: Abstraction has 731 states and 1319 transitions. [2021-01-06 19:24:33,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 19:24:33,782 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 1319 transitions. [2021-01-06 19:24:33,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-01-06 19:24:33,792 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:24:33,792 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:24:33,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 19:24:33,793 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:24:33,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:24:33,794 INFO L82 PathProgramCache]: Analyzing trace with hash 242857622, now seen corresponding path program 1 times [2021-01-06 19:24:33,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:24:33,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999554523] [2021-01-06 19:24:33,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:24:33,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:24:33,945 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 19:24:33,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999554523] [2021-01-06 19:24:33,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:24:33,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 19:24:33,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656848452] [2021-01-06 19:24:33,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 19:24:33,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:24:33,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 19:24:33,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 19:24:33,964 INFO L87 Difference]: Start difference. First operand 731 states and 1319 transitions. Second operand 4 states. [2021-01-06 19:24:34,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:24:34,108 INFO L93 Difference]: Finished difference Result 1435 states and 2593 transitions. [2021-01-06 19:24:34,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 19:24:34,109 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 180 [2021-01-06 19:24:34,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:24:34,115 INFO L225 Difference]: With dead ends: 1435 [2021-01-06 19:24:34,115 INFO L226 Difference]: Without dead ends: 733 [2021-01-06 19:24:34,117 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 19:24:34,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2021-01-06 19:24:34,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 731. [2021-01-06 19:24:34,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 731 states. [2021-01-06 19:24:34,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 1314 transitions. [2021-01-06 19:24:34,152 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 1314 transitions. Word has length 180 [2021-01-06 19:24:34,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:24:34,162 INFO L481 AbstractCegarLoop]: Abstraction has 731 states and 1314 transitions. [2021-01-06 19:24:34,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 19:24:34,163 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 1314 transitions. [2021-01-06 19:24:34,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-01-06 19:24:34,170 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:24:34,170 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:24:34,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 19:24:34,171 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:24:34,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:24:34,172 INFO L82 PathProgramCache]: Analyzing trace with hash -924628582, now seen corresponding path program 1 times [2021-01-06 19:24:34,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:24:34,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297222416] [2021-01-06 19:24:34,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:24:34,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:24:34,406 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 19:24:34,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297222416] [2021-01-06 19:24:34,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:24:34,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 19:24:34,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975809232] [2021-01-06 19:24:34,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 19:24:34,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:24:34,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 19:24:34,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 19:24:34,413 INFO L87 Difference]: Start difference. First operand 731 states and 1314 transitions. Second operand 4 states. [2021-01-06 19:24:34,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:24:34,517 INFO L93 Difference]: Finished difference Result 1434 states and 2582 transitions. [2021-01-06 19:24:34,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 19:24:34,518 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 180 [2021-01-06 19:24:34,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:24:34,522 INFO L225 Difference]: With dead ends: 1434 [2021-01-06 19:24:34,523 INFO L226 Difference]: Without dead ends: 733 [2021-01-06 19:24:34,524 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 19:24:34,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2021-01-06 19:24:34,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 731. [2021-01-06 19:24:34,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 731 states. [2021-01-06 19:24:34,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 1309 transitions. [2021-01-06 19:24:34,547 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 1309 transitions. Word has length 180 [2021-01-06 19:24:34,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:24:34,548 INFO L481 AbstractCegarLoop]: Abstraction has 731 states and 1309 transitions. [2021-01-06 19:24:34,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 19:24:34,548 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 1309 transitions. [2021-01-06 19:24:34,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-01-06 19:24:34,551 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:24:34,551 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:24:34,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 19:24:34,552 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:24:34,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:24:34,552 INFO L82 PathProgramCache]: Analyzing trace with hash -415849768, now seen corresponding path program 1 times [2021-01-06 19:24:34,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:24:34,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646857665] [2021-01-06 19:24:34,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:24:34,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:24:34,683 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 19:24:34,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646857665] [2021-01-06 19:24:34,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:24:34,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:24:34,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814944569] [2021-01-06 19:24:34,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:24:34,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:24:34,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:24:34,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:24:34,687 INFO L87 Difference]: Start difference. First operand 731 states and 1309 transitions. Second operand 3 states. [2021-01-06 19:24:34,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:24:34,793 INFO L93 Difference]: Finished difference Result 1775 states and 3187 transitions. [2021-01-06 19:24:34,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:24:34,795 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 180 [2021-01-06 19:24:34,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:24:34,802 INFO L225 Difference]: With dead ends: 1775 [2021-01-06 19:24:34,802 INFO L226 Difference]: Without dead ends: 1075 [2021-01-06 19:24:34,805 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 19:24:34,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1075 states. [2021-01-06 19:24:34,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1075 to 1073. [2021-01-06 19:24:34,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1073 states. [2021-01-06 19:24:34,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 1903 transitions. [2021-01-06 19:24:34,838 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 1903 transitions. Word has length 180 [2021-01-06 19:24:34,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:24:34,839 INFO L481 AbstractCegarLoop]: Abstraction has 1073 states and 1903 transitions. [2021-01-06 19:24:34,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:24:34,839 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 1903 transitions. [2021-01-06 19:24:34,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-01-06 19:24:34,842 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:24:34,842 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:24:34,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-06 19:24:34,843 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:24:34,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:24:34,843 INFO L82 PathProgramCache]: Analyzing trace with hash -526480548, now seen corresponding path program 1 times [2021-01-06 19:24:34,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:24:34,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910679415] [2021-01-06 19:24:34,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:24:34,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:24:34,948 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 19:24:34,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910679415] [2021-01-06 19:24:34,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:24:34,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 19:24:34,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238753745] [2021-01-06 19:24:34,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 19:24:34,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:24:34,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 19:24:34,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 19:24:34,953 INFO L87 Difference]: Start difference. First operand 1073 states and 1903 transitions. Second operand 4 states. [2021-01-06 19:24:35,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:24:35,214 INFO L93 Difference]: Finished difference Result 3209 states and 5627 transitions. [2021-01-06 19:24:35,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 19:24:35,214 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 180 [2021-01-06 19:24:35,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:24:35,229 INFO L225 Difference]: With dead ends: 3209 [2021-01-06 19:24:35,229 INFO L226 Difference]: Without dead ends: 2168 [2021-01-06 19:24:35,232 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 19:24:35,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2168 states. [2021-01-06 19:24:35,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2168 to 1469. [2021-01-06 19:24:35,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1469 states. [2021-01-06 19:24:35,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 2519 transitions. [2021-01-06 19:24:35,291 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 2519 transitions. Word has length 180 [2021-01-06 19:24:35,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:24:35,292 INFO L481 AbstractCegarLoop]: Abstraction has 1469 states and 2519 transitions. [2021-01-06 19:24:35,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 19:24:35,292 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 2519 transitions. [2021-01-06 19:24:35,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-01-06 19:24:35,296 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:24:35,296 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:24:35,296 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-06 19:24:35,296 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:24:35,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:24:35,303 INFO L82 PathProgramCache]: Analyzing trace with hash 382202076, now seen corresponding path program 1 times [2021-01-06 19:24:35,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:24:35,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706585057] [2021-01-06 19:24:35,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:24:35,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:24:35,428 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 19:24:35,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706585057] [2021-01-06 19:24:35,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:24:35,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 19:24:35,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538441720] [2021-01-06 19:24:35,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 19:24:35,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:24:35,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 19:24:35,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 19:24:35,433 INFO L87 Difference]: Start difference. First operand 1469 states and 2519 transitions. Second operand 4 states. [2021-01-06 19:24:35,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:24:35,670 INFO L93 Difference]: Finished difference Result 4534 states and 7682 transitions. [2021-01-06 19:24:35,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 19:24:35,670 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 180 [2021-01-06 19:24:35,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:24:35,687 INFO L225 Difference]: With dead ends: 4534 [2021-01-06 19:24:35,688 INFO L226 Difference]: Without dead ends: 3125 [2021-01-06 19:24:35,691 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 19:24:35,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3125 states. [2021-01-06 19:24:35,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3125 to 2181. [2021-01-06 19:24:35,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2181 states. [2021-01-06 19:24:35,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2181 states to 2181 states and 3623 transitions. [2021-01-06 19:24:35,759 INFO L78 Accepts]: Start accepts. Automaton has 2181 states and 3623 transitions. Word has length 180 [2021-01-06 19:24:35,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:24:35,759 INFO L481 AbstractCegarLoop]: Abstraction has 2181 states and 3623 transitions. [2021-01-06 19:24:35,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 19:24:35,760 INFO L276 IsEmpty]: Start isEmpty. Operand 2181 states and 3623 transitions. [2021-01-06 19:24:35,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-01-06 19:24:35,764 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:24:35,765 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:24:35,765 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-06 19:24:35,765 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:24:35,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:24:35,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1796987740, now seen corresponding path program 1 times [2021-01-06 19:24:35,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:24:35,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033295186] [2021-01-06 19:24:35,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:24:35,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:24:35,834 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 19:24:35,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033295186] [2021-01-06 19:24:35,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:24:35,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 19:24:35,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492350320] [2021-01-06 19:24:35,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 19:24:35,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:24:35,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 19:24:35,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 19:24:35,837 INFO L87 Difference]: Start difference. First operand 2181 states and 3623 transitions. Second operand 4 states. [2021-01-06 19:24:36,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:24:36,102 INFO L93 Difference]: Finished difference Result 6885 states and 11308 transitions. [2021-01-06 19:24:36,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 19:24:36,103 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 180 [2021-01-06 19:24:36,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:24:36,127 INFO L225 Difference]: With dead ends: 6885 [2021-01-06 19:24:36,127 INFO L226 Difference]: Without dead ends: 4814 [2021-01-06 19:24:36,132 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 19:24:36,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4814 states. [2021-01-06 19:24:36,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4814 to 3429. [2021-01-06 19:24:36,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3429 states. [2021-01-06 19:24:36,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3429 states to 3429 states and 5543 transitions. [2021-01-06 19:24:36,231 INFO L78 Accepts]: Start accepts. Automaton has 3429 states and 5543 transitions. Word has length 180 [2021-01-06 19:24:36,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:24:36,232 INFO L481 AbstractCegarLoop]: Abstraction has 3429 states and 5543 transitions. [2021-01-06 19:24:36,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 19:24:36,232 INFO L276 IsEmpty]: Start isEmpty. Operand 3429 states and 5543 transitions. [2021-01-06 19:24:36,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-01-06 19:24:36,240 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:24:36,240 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:24:36,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-06 19:24:36,241 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:24:36,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:24:36,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1621057316, now seen corresponding path program 1 times [2021-01-06 19:24:36,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:24:36,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225146805] [2021-01-06 19:24:36,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:24:36,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:24:36,309 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 19:24:36,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225146805] [2021-01-06 19:24:36,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:24:36,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 19:24:36,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667076049] [2021-01-06 19:24:36,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 19:24:36,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:24:36,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 19:24:36,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 19:24:36,312 INFO L87 Difference]: Start difference. First operand 3429 states and 5543 transitions. Second operand 4 states. [2021-01-06 19:24:36,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:24:36,602 INFO L93 Difference]: Finished difference Result 10946 states and 17506 transitions. [2021-01-06 19:24:36,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 19:24:36,603 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 180 [2021-01-06 19:24:36,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:24:36,638 INFO L225 Difference]: With dead ends: 10946 [2021-01-06 19:24:36,638 INFO L226 Difference]: Without dead ends: 7715 [2021-01-06 19:24:36,644 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 19:24:36,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7715 states. [2021-01-06 19:24:36,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7715 to 5557. [2021-01-06 19:24:36,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5557 states. [2021-01-06 19:24:36,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5557 states to 5557 states and 8775 transitions. [2021-01-06 19:24:36,784 INFO L78 Accepts]: Start accepts. Automaton has 5557 states and 8775 transitions. Word has length 180 [2021-01-06 19:24:36,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:24:36,784 INFO L481 AbstractCegarLoop]: Abstraction has 5557 states and 8775 transitions. [2021-01-06 19:24:36,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 19:24:36,785 INFO L276 IsEmpty]: Start isEmpty. Operand 5557 states and 8775 transitions. [2021-01-06 19:24:36,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-01-06 19:24:36,794 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:24:36,794 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:24:36,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-01-06 19:24:36,795 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:24:36,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:24:36,795 INFO L82 PathProgramCache]: Analyzing trace with hash 346893148, now seen corresponding path program 1 times [2021-01-06 19:24:36,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:24:36,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488589397] [2021-01-06 19:24:36,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:24:36,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:24:36,861 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 19:24:36,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488589397] [2021-01-06 19:24:36,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:24:36,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 19:24:36,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409601354] [2021-01-06 19:24:36,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 19:24:36,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:24:36,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 19:24:36,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 19:24:36,863 INFO L87 Difference]: Start difference. First operand 5557 states and 8775 transitions. Second operand 4 states. [2021-01-06 19:24:37,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:24:37,211 INFO L93 Difference]: Finished difference Result 16989 states and 26456 transitions. [2021-01-06 19:24:37,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 19:24:37,213 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 180 [2021-01-06 19:24:37,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:24:37,265 INFO L225 Difference]: With dead ends: 16989 [2021-01-06 19:24:37,265 INFO L226 Difference]: Without dead ends: 11783 [2021-01-06 19:24:37,273 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 19:24:37,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11783 states. [2021-01-06 19:24:37,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11783 to 8309. [2021-01-06 19:24:37,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8309 states. [2021-01-06 19:24:37,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8309 states to 8309 states and 12743 transitions. [2021-01-06 19:24:37,531 INFO L78 Accepts]: Start accepts. Automaton has 8309 states and 12743 transitions. Word has length 180 [2021-01-06 19:24:37,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:24:37,531 INFO L481 AbstractCegarLoop]: Abstraction has 8309 states and 12743 transitions. [2021-01-06 19:24:37,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 19:24:37,532 INFO L276 IsEmpty]: Start isEmpty. Operand 8309 states and 12743 transitions. [2021-01-06 19:24:37,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-01-06 19:24:37,547 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:24:37,547 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:24:37,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-01-06 19:24:37,547 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:24:37,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:24:37,548 INFO L82 PathProgramCache]: Analyzing trace with hash -462548706, now seen corresponding path program 1 times [2021-01-06 19:24:37,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:24:37,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454884664] [2021-01-06 19:24:37,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:24:37,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:24:37,671 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 19:24:37,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454884664] [2021-01-06 19:24:37,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:24:37,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 19:24:37,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595029510] [2021-01-06 19:24:37,673 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 19:24:37,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:24:37,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 19:24:37,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 19:24:37,676 INFO L87 Difference]: Start difference. First operand 8309 states and 12743 transitions. Second operand 4 states. [2021-01-06 19:24:38,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:24:38,009 INFO L93 Difference]: Finished difference Result 24379 states and 36276 transitions. [2021-01-06 19:24:38,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 19:24:38,010 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 180 [2021-01-06 19:24:38,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:24:38,050 INFO L225 Difference]: With dead ends: 24379 [2021-01-06 19:24:38,051 INFO L226 Difference]: Without dead ends: 16630 [2021-01-06 19:24:38,067 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 19:24:38,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16630 states. [2021-01-06 19:24:38,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16630 to 11781. [2021-01-06 19:24:38,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11781 states. [2021-01-06 19:24:38,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11781 states to 11781 states and 17127 transitions. [2021-01-06 19:24:38,318 INFO L78 Accepts]: Start accepts. Automaton has 11781 states and 17127 transitions. Word has length 180 [2021-01-06 19:24:38,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:24:38,318 INFO L481 AbstractCegarLoop]: Abstraction has 11781 states and 17127 transitions. [2021-01-06 19:24:38,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 19:24:38,318 INFO L276 IsEmpty]: Start isEmpty. Operand 11781 states and 17127 transitions. [2021-01-06 19:24:38,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-01-06 19:24:38,338 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:24:38,338 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:24:38,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-01-06 19:24:38,339 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:24:38,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:24:38,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1194382688, now seen corresponding path program 1 times [2021-01-06 19:24:38,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:24:38,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015748478] [2021-01-06 19:24:38,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:24:38,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:24:38,488 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 19:24:38,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015748478] [2021-01-06 19:24:38,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:24:38,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 19:24:38,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446530445] [2021-01-06 19:24:38,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 19:24:38,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:24:38,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 19:24:38,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 19:24:38,491 INFO L87 Difference]: Start difference. First operand 11781 states and 17127 transitions. Second operand 4 states. [2021-01-06 19:24:38,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:24:38,973 INFO L93 Difference]: Finished difference Result 31369 states and 45350 transitions. [2021-01-06 19:24:38,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 19:24:38,978 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 180 [2021-01-06 19:24:38,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:24:39,020 INFO L225 Difference]: With dead ends: 31369 [2021-01-06 19:24:39,020 INFO L226 Difference]: Without dead ends: 20438 [2021-01-06 19:24:39,043 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 19:24:39,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20438 states. [2021-01-06 19:24:39,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20438 to 15269. [2021-01-06 19:24:39,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15269 states. [2021-01-06 19:24:39,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15269 states to 15269 states and 21543 transitions. [2021-01-06 19:24:39,458 INFO L78 Accepts]: Start accepts. Automaton has 15269 states and 21543 transitions. Word has length 180 [2021-01-06 19:24:39,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:24:39,458 INFO L481 AbstractCegarLoop]: Abstraction has 15269 states and 21543 transitions. [2021-01-06 19:24:39,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 19:24:39,458 INFO L276 IsEmpty]: Start isEmpty. Operand 15269 states and 21543 transitions. [2021-01-06 19:24:39,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-01-06 19:24:39,481 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:24:39,481 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:24:39,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-01-06 19:24:39,482 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:24:39,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:24:39,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1246496350, now seen corresponding path program 1 times [2021-01-06 19:24:39,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:24:39,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329576954] [2021-01-06 19:24:39,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:24:39,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:24:39,567 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 19:24:39,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329576954] [2021-01-06 19:24:39,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:24:39,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 19:24:39,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101755995] [2021-01-06 19:24:39,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 19:24:39,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:24:39,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 19:24:39,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 19:24:39,571 INFO L87 Difference]: Start difference. First operand 15269 states and 21543 transitions. Second operand 4 states. [2021-01-06 19:24:39,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:24:39,990 INFO L93 Difference]: Finished difference Result 34597 states and 49428 transitions. [2021-01-06 19:24:39,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 19:24:39,991 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 180 [2021-01-06 19:24:39,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:24:40,060 INFO L225 Difference]: With dead ends: 34597 [2021-01-06 19:24:40,060 INFO L226 Difference]: Without dead ends: 20469 [2021-01-06 19:24:40,096 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 19:24:40,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20469 states. [2021-01-06 19:24:40,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20469 to 15301. [2021-01-06 19:24:40,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15301 states. [2021-01-06 19:24:40,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15301 states to 15301 states and 21575 transitions. [2021-01-06 19:24:40,515 INFO L78 Accepts]: Start accepts. Automaton has 15301 states and 21575 transitions. Word has length 180 [2021-01-06 19:24:40,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:24:40,516 INFO L481 AbstractCegarLoop]: Abstraction has 15301 states and 21575 transitions. [2021-01-06 19:24:40,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 19:24:40,516 INFO L276 IsEmpty]: Start isEmpty. Operand 15301 states and 21575 transitions. [2021-01-06 19:24:40,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-01-06 19:24:40,542 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:24:40,543 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:24:40,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-01-06 19:24:40,543 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:24:40,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:24:40,544 INFO L82 PathProgramCache]: Analyzing trace with hash -1738875102, now seen corresponding path program 1 times [2021-01-06 19:24:40,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:24:40,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598537218] [2021-01-06 19:24:40,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:24:40,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:24:40,625 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 19:24:40,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598537218] [2021-01-06 19:24:40,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:24:40,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:24:40,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024889957] [2021-01-06 19:24:40,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:24:40,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:24:40,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:24:40,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:24:40,628 INFO L87 Difference]: Start difference. First operand 15301 states and 21575 transitions. Second operand 3 states. [2021-01-06 19:24:41,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:24:41,089 INFO L93 Difference]: Finished difference Result 37206 states and 53495 transitions. [2021-01-06 19:24:41,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:24:41,090 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 180 [2021-01-06 19:24:41,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:24:41,138 INFO L225 Difference]: With dead ends: 37206 [2021-01-06 19:24:41,138 INFO L226 Difference]: Without dead ends: 23049 [2021-01-06 19:24:41,155 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 19:24:41,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23049 states. [2021-01-06 19:24:41,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23049 to 22567. [2021-01-06 19:24:41,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22567 states. [2021-01-06 19:24:41,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22567 states to 22567 states and 32397 transitions. [2021-01-06 19:24:41,653 INFO L78 Accepts]: Start accepts. Automaton has 22567 states and 32397 transitions. Word has length 180 [2021-01-06 19:24:41,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:24:41,654 INFO L481 AbstractCegarLoop]: Abstraction has 22567 states and 32397 transitions. [2021-01-06 19:24:41,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:24:41,654 INFO L276 IsEmpty]: Start isEmpty. Operand 22567 states and 32397 transitions. [2021-01-06 19:24:41,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-01-06 19:24:41,802 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:24:41,805 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:24:41,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-01-06 19:24:41,805 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:24:41,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:24:41,806 INFO L82 PathProgramCache]: Analyzing trace with hash -569224856, now seen corresponding path program 1 times [2021-01-06 19:24:41,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:24:41,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623216125] [2021-01-06 19:24:41,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:24:41,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:24:41,903 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 19:24:41,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623216125] [2021-01-06 19:24:41,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:24:41,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 19:24:41,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242669402] [2021-01-06 19:24:41,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 19:24:41,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:24:41,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 19:24:41,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 19:24:41,906 INFO L87 Difference]: Start difference. First operand 22567 states and 32397 transitions. Second operand 4 states. [2021-01-06 19:24:42,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:24:42,517 INFO L93 Difference]: Finished difference Result 50833 states and 73580 transitions. [2021-01-06 19:24:42,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 19:24:42,518 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 180 [2021-01-06 19:24:42,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:24:42,580 INFO L225 Difference]: With dead ends: 50833 [2021-01-06 19:24:42,580 INFO L226 Difference]: Without dead ends: 29424 [2021-01-06 19:24:42,603 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 19:24:42,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29424 states. [2021-01-06 19:24:43,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29424 to 24981. [2021-01-06 19:24:43,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24981 states. [2021-01-06 19:24:43,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24981 states to 24981 states and 36036 transitions. [2021-01-06 19:24:43,164 INFO L78 Accepts]: Start accepts. Automaton has 24981 states and 36036 transitions. Word has length 180 [2021-01-06 19:24:43,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:24:43,165 INFO L481 AbstractCegarLoop]: Abstraction has 24981 states and 36036 transitions. [2021-01-06 19:24:43,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 19:24:43,165 INFO L276 IsEmpty]: Start isEmpty. Operand 24981 states and 36036 transitions. [2021-01-06 19:24:43,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-01-06 19:24:43,395 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:24:43,396 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:24:43,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-01-06 19:24:43,396 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:24:43,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:24:43,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1154930602, now seen corresponding path program 1 times [2021-01-06 19:24:43,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:24:43,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867180796] [2021-01-06 19:24:43,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:24:43,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:24:43,482 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 19:24:43,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867180796] [2021-01-06 19:24:43,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:24:43,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 19:24:43,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755311015] [2021-01-06 19:24:43,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 19:24:43,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:24:43,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 19:24:43,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 19:24:43,487 INFO L87 Difference]: Start difference. First operand 24981 states and 36036 transitions. Second operand 4 states. [2021-01-06 19:24:44,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:24:44,032 INFO L93 Difference]: Finished difference Result 56415 states and 81970 transitions. [2021-01-06 19:24:44,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 19:24:44,032 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 180 [2021-01-06 19:24:44,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:24:44,095 INFO L225 Difference]: With dead ends: 56415 [2021-01-06 19:24:44,095 INFO L226 Difference]: Without dead ends: 32713 [2021-01-06 19:24:44,117 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 19:24:44,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32713 states. [2021-01-06 19:24:44,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32713 to 27825. [2021-01-06 19:24:44,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27825 states. [2021-01-06 19:24:44,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27825 states to 27825 states and 40354 transitions. [2021-01-06 19:24:44,821 INFO L78 Accepts]: Start accepts. Automaton has 27825 states and 40354 transitions. Word has length 180 [2021-01-06 19:24:44,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:24:44,821 INFO L481 AbstractCegarLoop]: Abstraction has 27825 states and 40354 transitions. [2021-01-06 19:24:44,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 19:24:44,822 INFO L276 IsEmpty]: Start isEmpty. Operand 27825 states and 40354 transitions. [2021-01-06 19:24:44,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-01-06 19:24:44,848 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:24:44,848 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:24:44,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-01-06 19:24:44,848 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:24:44,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:24:44,849 INFO L82 PathProgramCache]: Analyzing trace with hash -377799382, now seen corresponding path program 1 times [2021-01-06 19:24:44,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:24:44,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575198387] [2021-01-06 19:24:44,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:24:44,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:24:44,912 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 19:24:44,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575198387] [2021-01-06 19:24:44,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:24:44,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 19:24:44,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291309085] [2021-01-06 19:24:44,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 19:24:44,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:24:44,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 19:24:44,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 19:24:44,914 INFO L87 Difference]: Start difference. First operand 27825 states and 40354 transitions. Second operand 4 states. [2021-01-06 19:24:45,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:24:45,530 INFO L93 Difference]: Finished difference Result 63483 states and 92646 transitions. [2021-01-06 19:24:45,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 19:24:45,530 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 180 [2021-01-06 19:24:45,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:24:45,591 INFO L225 Difference]: With dead ends: 63483 [2021-01-06 19:24:45,591 INFO L226 Difference]: Without dead ends: 37083 [2021-01-06 19:24:45,619 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 19:24:45,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37083 states. [2021-01-06 19:24:46,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37083 to 31529. [2021-01-06 19:24:46,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31529 states. [2021-01-06 19:24:46,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31529 states to 31529 states and 46030 transitions. [2021-01-06 19:24:46,515 INFO L78 Accepts]: Start accepts. Automaton has 31529 states and 46030 transitions. Word has length 180 [2021-01-06 19:24:46,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:24:46,515 INFO L481 AbstractCegarLoop]: Abstraction has 31529 states and 46030 transitions. [2021-01-06 19:24:46,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 19:24:46,516 INFO L276 IsEmpty]: Start isEmpty. Operand 31529 states and 46030 transitions. [2021-01-06 19:24:46,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-01-06 19:24:46,552 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:24:46,552 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:24:46,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-01-06 19:24:46,553 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:24:46,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:24:46,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1812715606, now seen corresponding path program 1 times [2021-01-06 19:24:46,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:24:46,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155578740] [2021-01-06 19:24:46,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:24:46,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:24:46,652 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 19:24:46,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155578740] [2021-01-06 19:24:46,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:24:46,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 19:24:46,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160514541] [2021-01-06 19:24:46,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 19:24:46,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:24:46,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 19:24:46,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 19:24:46,661 INFO L87 Difference]: Start difference. First operand 31529 states and 46030 transitions. Second operand 4 states. [2021-01-06 19:24:47,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:24:47,415 INFO L93 Difference]: Finished difference Result 73523 states and 107894 transitions. [2021-01-06 19:24:47,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 19:24:47,415 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 180 [2021-01-06 19:24:47,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:24:47,464 INFO L225 Difference]: With dead ends: 73523 [2021-01-06 19:24:47,465 INFO L226 Difference]: Without dead ends: 43615 [2021-01-06 19:24:47,490 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 19:24:47,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43615 states. [2021-01-06 19:24:48,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43615 to 36953. [2021-01-06 19:24:48,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36953 states. [2021-01-06 19:24:48,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36953 states to 36953 states and 54422 transitions. [2021-01-06 19:24:48,477 INFO L78 Accepts]: Start accepts. Automaton has 36953 states and 54422 transitions. Word has length 180 [2021-01-06 19:24:48,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:24:48,478 INFO L481 AbstractCegarLoop]: Abstraction has 36953 states and 54422 transitions. [2021-01-06 19:24:48,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 19:24:48,478 INFO L276 IsEmpty]: Start isEmpty. Operand 36953 states and 54422 transitions. [2021-01-06 19:24:48,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-01-06 19:24:48,517 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:24:48,517 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:24:48,517 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-01-06 19:24:48,517 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:24:48,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:24:48,518 INFO L82 PathProgramCache]: Analyzing trace with hash -1720455894, now seen corresponding path program 1 times [2021-01-06 19:24:48,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:24:48,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824617062] [2021-01-06 19:24:48,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:24:48,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:24:48,585 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 19:24:48,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824617062] [2021-01-06 19:24:48,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:24:48,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 19:24:48,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219971719] [2021-01-06 19:24:48,587 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 19:24:48,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:24:48,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 19:24:48,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 19:24:48,588 INFO L87 Difference]: Start difference. First operand 36953 states and 54422 transitions. Second operand 4 states. [2021-01-06 19:24:49,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:24:49,342 INFO L93 Difference]: Finished difference Result 93691 states and 137558 transitions. [2021-01-06 19:24:49,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 19:24:49,342 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 180 [2021-01-06 19:24:49,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:24:49,437 INFO L225 Difference]: With dead ends: 93691 [2021-01-06 19:24:49,438 INFO L226 Difference]: Without dead ends: 58655 [2021-01-06 19:24:49,467 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 19:24:49,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58655 states. [2021-01-06 19:24:50,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58655 to 45817. [2021-01-06 19:24:50,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45817 states. [2021-01-06 19:24:50,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45817 states to 45817 states and 67238 transitions. [2021-01-06 19:24:50,383 INFO L78 Accepts]: Start accepts. Automaton has 45817 states and 67238 transitions. Word has length 180 [2021-01-06 19:24:50,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:24:50,383 INFO L481 AbstractCegarLoop]: Abstraction has 45817 states and 67238 transitions. [2021-01-06 19:24:50,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 19:24:50,383 INFO L276 IsEmpty]: Start isEmpty. Operand 45817 states and 67238 transitions. [2021-01-06 19:24:50,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-01-06 19:24:50,424 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:24:50,424 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:24:50,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-01-06 19:24:50,424 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:24:50,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:24:50,425 INFO L82 PathProgramCache]: Analyzing trace with hash 176523564, now seen corresponding path program 1 times [2021-01-06 19:24:50,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:24:50,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860798043] [2021-01-06 19:24:50,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:24:50,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:24:50,715 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 19:24:50,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860798043] [2021-01-06 19:24:50,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:24:50,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 19:24:50,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756741030] [2021-01-06 19:24:50,722 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 19:24:50,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:24:50,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 19:24:50,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 19:24:50,724 INFO L87 Difference]: Start difference. First operand 45817 states and 67238 transitions. Second operand 4 states. [2021-01-06 19:24:51,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:24:51,380 INFO L93 Difference]: Finished difference Result 114409 states and 166738 transitions. [2021-01-06 19:24:51,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 19:24:51,381 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 180 [2021-01-06 19:24:51,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:24:51,450 INFO L225 Difference]: With dead ends: 114409 [2021-01-06 19:24:51,450 INFO L226 Difference]: Without dead ends: 71007 [2021-01-06 19:24:51,708 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 19:24:51,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71007 states. [2021-01-06 19:24:52,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71007 to 56057. [2021-01-06 19:24:52,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56057 states. [2021-01-06 19:24:52,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56057 states to 56057 states and 82406 transitions. [2021-01-06 19:24:52,491 INFO L78 Accepts]: Start accepts. Automaton has 56057 states and 82406 transitions. Word has length 180 [2021-01-06 19:24:52,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:24:52,491 INFO L481 AbstractCegarLoop]: Abstraction has 56057 states and 82406 transitions. [2021-01-06 19:24:52,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 19:24:52,491 INFO L276 IsEmpty]: Start isEmpty. Operand 56057 states and 82406 transitions. [2021-01-06 19:24:52,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-01-06 19:24:52,550 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:24:52,550 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:24:52,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-01-06 19:24:52,551 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:24:52,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:24:52,552 INFO L82 PathProgramCache]: Analyzing trace with hash -2046938386, now seen corresponding path program 1 times [2021-01-06 19:24:52,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:24:52,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032240669] [2021-01-06 19:24:52,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:24:52,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:24:52,640 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 19:24:52,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032240669] [2021-01-06 19:24:52,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:24:52,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 19:24:52,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103108193] [2021-01-06 19:24:52,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 19:24:52,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:24:52,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 19:24:52,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 19:24:52,642 INFO L87 Difference]: Start difference. First operand 56057 states and 82406 transitions. Second operand 4 states. [2021-01-06 19:24:53,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:24:53,552 INFO L93 Difference]: Finished difference Result 132709 states and 191483 transitions. [2021-01-06 19:24:53,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 19:24:53,553 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 180 [2021-01-06 19:24:53,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:24:53,629 INFO L225 Difference]: With dead ends: 132709 [2021-01-06 19:24:53,629 INFO L226 Difference]: Without dead ends: 79711 [2021-01-06 19:24:53,664 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 19:24:53,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79711 states. [2021-01-06 19:24:54,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79711 to 64281. [2021-01-06 19:24:54,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64281 states. [2021-01-06 19:24:54,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64281 states to 64281 states and 91974 transitions. [2021-01-06 19:24:54,850 INFO L78 Accepts]: Start accepts. Automaton has 64281 states and 91974 transitions. Word has length 180 [2021-01-06 19:24:54,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:24:54,850 INFO L481 AbstractCegarLoop]: Abstraction has 64281 states and 91974 transitions. [2021-01-06 19:24:54,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 19:24:54,851 INFO L276 IsEmpty]: Start isEmpty. Operand 64281 states and 91974 transitions. [2021-01-06 19:24:54,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-01-06 19:24:54,920 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:24:54,920 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:24:54,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-01-06 19:24:54,921 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:24:54,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:24:54,921 INFO L82 PathProgramCache]: Analyzing trace with hash 629545776, now seen corresponding path program 1 times [2021-01-06 19:24:54,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:24:54,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535362313] [2021-01-06 19:24:54,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:24:54,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:24:55,008 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 19:24:55,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535362313] [2021-01-06 19:24:55,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:24:55,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 19:24:55,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268008667] [2021-01-06 19:24:55,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 19:24:55,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:24:55,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 19:24:55,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 19:24:55,014 INFO L87 Difference]: Start difference. First operand 64281 states and 91974 transitions. Second operand 4 states. [2021-01-06 19:24:55,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:24:55,875 INFO L93 Difference]: Finished difference Result 180883 states and 259055 transitions. [2021-01-06 19:24:55,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 19:24:55,878 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 180 [2021-01-06 19:24:55,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:24:56,014 INFO L225 Difference]: With dead ends: 180883 [2021-01-06 19:24:56,015 INFO L226 Difference]: Without dead ends: 119091 [2021-01-06 19:24:56,059 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 19:24:56,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119091 states. [2021-01-06 19:24:57,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119091 to 88841. [2021-01-06 19:24:57,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88841 states. [2021-01-06 19:24:57,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88841 states to 88841 states and 125558 transitions. [2021-01-06 19:24:57,523 INFO L78 Accepts]: Start accepts. Automaton has 88841 states and 125558 transitions. Word has length 180 [2021-01-06 19:24:57,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:24:57,523 INFO L481 AbstractCegarLoop]: Abstraction has 88841 states and 125558 transitions. [2021-01-06 19:24:57,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 19:24:57,523 INFO L276 IsEmpty]: Start isEmpty. Operand 88841 states and 125558 transitions. [2021-01-06 19:24:57,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-01-06 19:24:57,585 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:24:57,585 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:24:57,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-01-06 19:24:57,585 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:24:57,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:24:57,586 INFO L82 PathProgramCache]: Analyzing trace with hash -1246261392, now seen corresponding path program 1 times [2021-01-06 19:24:57,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:24:57,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231989610] [2021-01-06 19:24:57,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:24:57,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:24:57,657 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 19:24:57,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231989610] [2021-01-06 19:24:57,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:24:57,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 19:24:57,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756595138] [2021-01-06 19:24:57,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 19:24:57,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:24:57,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 19:24:57,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 19:24:57,660 INFO L87 Difference]: Start difference. First operand 88841 states and 125558 transitions. Second operand 4 states. [2021-01-06 19:24:58,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:24:58,863 INFO L93 Difference]: Finished difference Result 220655 states and 310282 transitions. [2021-01-06 19:24:58,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 19:24:58,864 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 180 [2021-01-06 19:24:58,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:24:59,429 INFO L225 Difference]: With dead ends: 220655 [2021-01-06 19:24:59,429 INFO L226 Difference]: Without dead ends: 136703 [2021-01-06 19:24:59,503 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 19:24:59,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136703 states. [2021-01-06 19:25:01,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136703 to 120937. [2021-01-06 19:25:01,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120937 states. [2021-01-06 19:25:01,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120937 states to 120937 states and 169782 transitions. [2021-01-06 19:25:01,302 INFO L78 Accepts]: Start accepts. Automaton has 120937 states and 169782 transitions. Word has length 180 [2021-01-06 19:25:01,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:25:01,303 INFO L481 AbstractCegarLoop]: Abstraction has 120937 states and 169782 transitions. [2021-01-06 19:25:01,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 19:25:01,303 INFO L276 IsEmpty]: Start isEmpty. Operand 120937 states and 169782 transitions. [2021-01-06 19:25:01,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-01-06 19:25:01,380 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:25:01,380 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:25:01,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-01-06 19:25:01,381 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:25:01,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:25:01,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1195432242, now seen corresponding path program 1 times [2021-01-06 19:25:01,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:25:01,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318430676] [2021-01-06 19:25:01,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:25:01,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:25:01,434 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 19:25:01,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318430676] [2021-01-06 19:25:01,435 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:25:01,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:25:01,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950704645] [2021-01-06 19:25:01,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:25:01,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:25:01,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:25:01,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:25:01,441 INFO L87 Difference]: Start difference. First operand 120937 states and 169782 transitions. Second operand 3 states. [2021-01-06 19:25:02,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:25:02,491 INFO L93 Difference]: Finished difference Result 213389 states and 299577 transitions. [2021-01-06 19:25:02,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:25:02,492 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 180 [2021-01-06 19:25:02,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:25:02,615 INFO L225 Difference]: With dead ends: 213389 [2021-01-06 19:25:02,616 INFO L226 Difference]: Without dead ends: 120937 [2021-01-06 19:25:02,669 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 19:25:02,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120937 states. [2021-01-06 19:25:04,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120937 to 120937. [2021-01-06 19:25:04,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120937 states. [2021-01-06 19:25:04,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120937 states to 120937 states and 169014 transitions. [2021-01-06 19:25:04,888 INFO L78 Accepts]: Start accepts. Automaton has 120937 states and 169014 transitions. Word has length 180 [2021-01-06 19:25:04,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:25:04,889 INFO L481 AbstractCegarLoop]: Abstraction has 120937 states and 169014 transitions. [2021-01-06 19:25:04,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:25:04,889 INFO L276 IsEmpty]: Start isEmpty. Operand 120937 states and 169014 transitions. [2021-01-06 19:25:05,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-01-06 19:25:05,043 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:25:05,044 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:25:05,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-01-06 19:25:05,044 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:25:05,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:25:05,047 INFO L82 PathProgramCache]: Analyzing trace with hash -750404731, now seen corresponding path program 1 times [2021-01-06 19:25:05,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:25:05,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256915367] [2021-01-06 19:25:05,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:25:05,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:25:05,187 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 19:25:05,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256915367] [2021-01-06 19:25:05,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:25:05,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 19:25:05,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845007146] [2021-01-06 19:25:05,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 19:25:05,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:25:05,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 19:25:05,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 19:25:05,189 INFO L87 Difference]: Start difference. First operand 120937 states and 169014 transitions. Second operand 5 states. [2021-01-06 19:25:06,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:25:06,351 INFO L93 Difference]: Finished difference Result 239625 states and 332707 transitions. [2021-01-06 19:25:06,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 19:25:06,355 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 182 [2021-01-06 19:25:06,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:25:06,557 INFO L225 Difference]: With dead ends: 239625 [2021-01-06 19:25:06,558 INFO L226 Difference]: Without dead ends: 147173 [2021-01-06 19:25:06,626 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-01-06 19:25:06,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147173 states. [2021-01-06 19:25:08,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147173 to 144589. [2021-01-06 19:25:08,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144589 states. [2021-01-06 19:25:09,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144589 states to 144589 states and 200123 transitions. [2021-01-06 19:25:09,135 INFO L78 Accepts]: Start accepts. Automaton has 144589 states and 200123 transitions. Word has length 182 [2021-01-06 19:25:09,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:25:09,135 INFO L481 AbstractCegarLoop]: Abstraction has 144589 states and 200123 transitions. [2021-01-06 19:25:09,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 19:25:09,136 INFO L276 IsEmpty]: Start isEmpty. Operand 144589 states and 200123 transitions. [2021-01-06 19:25:09,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-01-06 19:25:09,224 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:25:09,225 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:25:09,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-01-06 19:25:09,225 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:25:09,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:25:09,225 INFO L82 PathProgramCache]: Analyzing trace with hash 570050343, now seen corresponding path program 1 times [2021-01-06 19:25:09,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:25:09,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642873254] [2021-01-06 19:25:09,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:25:09,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:25:09,315 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 19:25:09,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642873254] [2021-01-06 19:25:09,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:25:09,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 19:25:09,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241568501] [2021-01-06 19:25:09,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 19:25:09,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:25:09,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 19:25:09,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 19:25:09,318 INFO L87 Difference]: Start difference. First operand 144589 states and 200123 transitions. Second operand 4 states. [2021-01-06 19:25:10,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:25:10,462 INFO L93 Difference]: Finished difference Result 287965 states and 398522 transitions. [2021-01-06 19:25:10,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 19:25:10,462 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 183 [2021-01-06 19:25:10,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:25:10,622 INFO L225 Difference]: With dead ends: 287965 [2021-01-06 19:25:10,622 INFO L226 Difference]: Without dead ends: 144591 [2021-01-06 19:25:10,696 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 19:25:10,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144591 states. [2021-01-06 19:25:12,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144591 to 144589. [2021-01-06 19:25:12,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144589 states. [2021-01-06 19:25:13,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144589 states to 144589 states and 198203 transitions. [2021-01-06 19:25:13,018 INFO L78 Accepts]: Start accepts. Automaton has 144589 states and 198203 transitions. Word has length 183 [2021-01-06 19:25:13,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:25:13,019 INFO L481 AbstractCegarLoop]: Abstraction has 144589 states and 198203 transitions. [2021-01-06 19:25:13,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 19:25:13,019 INFO L276 IsEmpty]: Start isEmpty. Operand 144589 states and 198203 transitions. [2021-01-06 19:25:13,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-01-06 19:25:13,109 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:25:13,109 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:25:13,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-01-06 19:25:13,109 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:25:13,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:25:13,110 INFO L82 PathProgramCache]: Analyzing trace with hash -572452123, now seen corresponding path program 1 times [2021-01-06 19:25:13,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:25:13,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073713590] [2021-01-06 19:25:13,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:25:13,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:25:13,166 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 19:25:13,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073713590] [2021-01-06 19:25:13,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:25:13,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:25:13,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176018193] [2021-01-06 19:25:13,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:25:13,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:25:13,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:25:13,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:25:13,168 INFO L87 Difference]: Start difference. First operand 144589 states and 198203 transitions. Second operand 3 states. [2021-01-06 19:25:14,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:25:14,431 INFO L93 Difference]: Finished difference Result 270770 states and 372324 transitions. [2021-01-06 19:25:14,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:25:14,432 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 183 [2021-01-06 19:25:14,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:25:15,143 INFO L225 Difference]: With dead ends: 270770 [2021-01-06 19:25:15,156 INFO L226 Difference]: Without dead ends: 131233 [2021-01-06 19:25:15,309 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 19:25:15,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131233 states. [2021-01-06 19:25:16,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131233 to 131233. [2021-01-06 19:25:16,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131233 states. [2021-01-06 19:25:17,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131233 states to 131233 states and 178787 transitions. [2021-01-06 19:25:17,117 INFO L78 Accepts]: Start accepts. Automaton has 131233 states and 178787 transitions. Word has length 183 [2021-01-06 19:25:17,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:25:17,117 INFO L481 AbstractCegarLoop]: Abstraction has 131233 states and 178787 transitions. [2021-01-06 19:25:17,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:25:17,117 INFO L276 IsEmpty]: Start isEmpty. Operand 131233 states and 178787 transitions. [2021-01-06 19:25:17,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-01-06 19:25:17,199 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:25:17,199 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:25:17,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-01-06 19:25:17,200 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:25:17,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:25:17,200 INFO L82 PathProgramCache]: Analyzing trace with hash 427271973, now seen corresponding path program 1 times [2021-01-06 19:25:17,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:25:17,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730705367] [2021-01-06 19:25:17,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:25:17,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:25:17,263 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 19:25:17,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730705367] [2021-01-06 19:25:17,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:25:17,264 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:25:17,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570824728] [2021-01-06 19:25:17,264 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:25:17,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:25:17,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:25:17,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:25:17,265 INFO L87 Difference]: Start difference. First operand 131233 states and 178787 transitions. Second operand 3 states. [2021-01-06 19:25:18,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:25:18,999 INFO L93 Difference]: Finished difference Result 273267 states and 378682 transitions. [2021-01-06 19:25:18,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:25:18,999 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 183 [2021-01-06 19:25:18,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:25:19,186 INFO L225 Difference]: With dead ends: 273267 [2021-01-06 19:25:19,187 INFO L226 Difference]: Without dead ends: 147154 [2021-01-06 19:25:19,276 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 19:25:19,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147154 states. [2021-01-06 19:25:21,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147154 to 147154. [2021-01-06 19:25:21,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147154 states. [2021-01-06 19:25:21,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147154 states to 147154 states and 197317 transitions. [2021-01-06 19:25:21,704 INFO L78 Accepts]: Start accepts. Automaton has 147154 states and 197317 transitions. Word has length 183 [2021-01-06 19:25:21,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:25:21,705 INFO L481 AbstractCegarLoop]: Abstraction has 147154 states and 197317 transitions. [2021-01-06 19:25:21,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:25:21,705 INFO L276 IsEmpty]: Start isEmpty. Operand 147154 states and 197317 transitions. [2021-01-06 19:25:21,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-01-06 19:25:21,804 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:25:21,805 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:25:21,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-01-06 19:25:21,805 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:25:21,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:25:21,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1863226201, now seen corresponding path program 1 times [2021-01-06 19:25:21,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:25:21,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240506458] [2021-01-06 19:25:21,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:25:21,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:25:21,869 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 19:25:21,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240506458] [2021-01-06 19:25:21,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:25:21,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:25:21,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013224454] [2021-01-06 19:25:21,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:25:21,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:25:21,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:25:21,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:25:21,871 INFO L87 Difference]: Start difference. First operand 147154 states and 197317 transitions. Second operand 3 states. [2021-01-06 19:25:23,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:25:23,348 INFO L93 Difference]: Finished difference Result 300427 states and 401978 transitions. [2021-01-06 19:25:23,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:25:23,348 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 183 [2021-01-06 19:25:23,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:25:24,025 INFO L225 Difference]: With dead ends: 300427 [2021-01-06 19:25:24,026 INFO L226 Difference]: Without dead ends: 159419 [2021-01-06 19:25:24,096 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 19:25:24,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159419 states. [2021-01-06 19:25:25,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159419 to 154170. [2021-01-06 19:25:25,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154170 states. [2021-01-06 19:25:26,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154170 states to 154170 states and 206442 transitions. [2021-01-06 19:25:26,040 INFO L78 Accepts]: Start accepts. Automaton has 154170 states and 206442 transitions. Word has length 183 [2021-01-06 19:25:26,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:25:26,041 INFO L481 AbstractCegarLoop]: Abstraction has 154170 states and 206442 transitions. [2021-01-06 19:25:26,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:25:26,041 INFO L276 IsEmpty]: Start isEmpty. Operand 154170 states and 206442 transitions. [2021-01-06 19:25:26,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-01-06 19:25:26,689 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:25:26,690 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:25:26,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-01-06 19:25:26,690 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:25:26,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:25:26,692 INFO L82 PathProgramCache]: Analyzing trace with hash 722961195, now seen corresponding path program 1 times [2021-01-06 19:25:26,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:25:26,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291657979] [2021-01-06 19:25:26,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:25:26,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:25:26,768 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 19:25:26,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291657979] [2021-01-06 19:25:26,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:25:26,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:25:26,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225114622] [2021-01-06 19:25:26,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:25:26,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:25:26,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:25:26,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:25:26,770 INFO L87 Difference]: Start difference. First operand 154170 states and 206442 transitions. Second operand 3 states. [2021-01-06 19:25:28,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:25:28,040 INFO L93 Difference]: Finished difference Result 241962 states and 319835 transitions. [2021-01-06 19:25:28,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:25:28,041 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 183 [2021-01-06 19:25:28,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:25:28,142 INFO L225 Difference]: With dead ends: 241962 [2021-01-06 19:25:28,142 INFO L226 Difference]: Without dead ends: 92912 [2021-01-06 19:25:28,225 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 19:25:28,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92912 states. [2021-01-06 19:25:29,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92912 to 88880. [2021-01-06 19:25:29,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88880 states. [2021-01-06 19:25:29,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88880 states to 88880 states and 113711 transitions. [2021-01-06 19:25:29,820 INFO L78 Accepts]: Start accepts. Automaton has 88880 states and 113711 transitions. Word has length 183 [2021-01-06 19:25:29,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:25:29,821 INFO L481 AbstractCegarLoop]: Abstraction has 88880 states and 113711 transitions. [2021-01-06 19:25:29,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:25:29,821 INFO L276 IsEmpty]: Start isEmpty. Operand 88880 states and 113711 transitions. [2021-01-06 19:25:29,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-01-06 19:25:29,895 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:25:29,895 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:25:29,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-01-06 19:25:29,896 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:25:29,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:25:29,896 INFO L82 PathProgramCache]: Analyzing trace with hash -272961049, now seen corresponding path program 1 times [2021-01-06 19:25:29,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:25:29,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220976926] [2021-01-06 19:25:29,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:25:29,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:25:29,952 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 19:25:29,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220976926] [2021-01-06 19:25:29,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:25:29,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 19:25:29,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464821068] [2021-01-06 19:25:29,954 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 19:25:29,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:25:29,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 19:25:29,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 19:25:29,954 INFO L87 Difference]: Start difference. First operand 88880 states and 113711 transitions. Second operand 4 states. [2021-01-06 19:25:30,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:25:30,364 INFO L93 Difference]: Finished difference Result 144411 states and 186135 transitions. [2021-01-06 19:25:30,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 19:25:30,365 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 183 [2021-01-06 19:25:30,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:25:30,430 INFO L225 Difference]: With dead ends: 144411 [2021-01-06 19:25:30,430 INFO L226 Difference]: Without dead ends: 64641 [2021-01-06 19:25:30,472 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 19:25:30,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64641 states. [2021-01-06 19:25:31,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64641 to 64193. [2021-01-06 19:25:31,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64193 states. [2021-01-06 19:25:31,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64193 states to 64193 states and 82447 transitions. [2021-01-06 19:25:31,846 INFO L78 Accepts]: Start accepts. Automaton has 64193 states and 82447 transitions. Word has length 183 [2021-01-06 19:25:31,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:25:31,846 INFO L481 AbstractCegarLoop]: Abstraction has 64193 states and 82447 transitions. [2021-01-06 19:25:31,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 19:25:31,846 INFO L276 IsEmpty]: Start isEmpty. Operand 64193 states and 82447 transitions. [2021-01-06 19:25:31,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-01-06 19:25:31,879 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:25:31,880 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:25:31,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-01-06 19:25:31,880 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:25:31,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:25:31,880 INFO L82 PathProgramCache]: Analyzing trace with hash -1964997816, now seen corresponding path program 1 times [2021-01-06 19:25:31,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:25:31,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739552995] [2021-01-06 19:25:31,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:25:31,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:25:31,948 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:25:31,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739552995] [2021-01-06 19:25:31,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:25:31,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:25:31,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442662494] [2021-01-06 19:25:31,950 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:25:31,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:25:31,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:25:31,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:25:31,950 INFO L87 Difference]: Start difference. First operand 64193 states and 82447 transitions. Second operand 3 states. [2021-01-06 19:25:32,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:25:32,359 INFO L93 Difference]: Finished difference Result 123178 states and 158734 transitions. [2021-01-06 19:25:32,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:25:32,360 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 191 [2021-01-06 19:25:32,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:25:32,721 INFO L225 Difference]: With dead ends: 123178 [2021-01-06 19:25:32,721 INFO L226 Difference]: Without dead ends: 64554 [2021-01-06 19:25:32,752 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 19:25:32,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64554 states. [2021-01-06 19:25:33,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64554 to 64554. [2021-01-06 19:25:33,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64554 states. [2021-01-06 19:25:33,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64554 states to 64554 states and 83026 transitions. [2021-01-06 19:25:33,661 INFO L78 Accepts]: Start accepts. Automaton has 64554 states and 83026 transitions. Word has length 191 [2021-01-06 19:25:33,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:25:33,661 INFO L481 AbstractCegarLoop]: Abstraction has 64554 states and 83026 transitions. [2021-01-06 19:25:33,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:25:33,661 INFO L276 IsEmpty]: Start isEmpty. Operand 64554 states and 83026 transitions. [2021-01-06 19:25:33,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-01-06 19:25:33,698 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:25:33,698 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:25:33,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-01-06 19:25:33,698 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:25:33,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:25:33,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1820144732, now seen corresponding path program 1 times [2021-01-06 19:25:33,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:25:33,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446251111] [2021-01-06 19:25:33,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:25:33,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:25:33,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:25:33,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446251111] [2021-01-06 19:25:33,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:25:33,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:25:33,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250142757] [2021-01-06 19:25:33,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:25:33,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:25:33,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:25:33,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:25:33,772 INFO L87 Difference]: Start difference. First operand 64554 states and 83026 transitions. Second operand 3 states. [2021-01-06 19:25:34,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:25:34,510 INFO L93 Difference]: Finished difference Result 124193 states and 160389 transitions. [2021-01-06 19:25:34,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:25:34,511 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 192 [2021-01-06 19:25:34,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:25:34,577 INFO L225 Difference]: With dead ends: 124193 [2021-01-06 19:25:34,577 INFO L226 Difference]: Without dead ends: 65208 [2021-01-06 19:25:34,607 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 19:25:34,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65208 states. [2021-01-06 19:25:35,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65208 to 65208. [2021-01-06 19:25:35,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65208 states. [2021-01-06 19:25:35,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65208 states to 65208 states and 84073 transitions. [2021-01-06 19:25:35,586 INFO L78 Accepts]: Start accepts. Automaton has 65208 states and 84073 transitions. Word has length 192 [2021-01-06 19:25:35,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:25:35,587 INFO L481 AbstractCegarLoop]: Abstraction has 65208 states and 84073 transitions. [2021-01-06 19:25:35,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:25:35,587 INFO L276 IsEmpty]: Start isEmpty. Operand 65208 states and 84073 transitions. [2021-01-06 19:25:35,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-01-06 19:25:35,898 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:25:35,898 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:25:35,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-01-06 19:25:35,898 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:25:35,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:25:35,900 INFO L82 PathProgramCache]: Analyzing trace with hash -400527807, now seen corresponding path program 1 times [2021-01-06 19:25:35,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:25:35,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658690027] [2021-01-06 19:25:35,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:25:35,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:25:36,008 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:25:36,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658690027] [2021-01-06 19:25:36,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:25:36,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:25:36,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706307929] [2021-01-06 19:25:36,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:25:36,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:25:36,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:25:36,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:25:36,010 INFO L87 Difference]: Start difference. First operand 65208 states and 84073 transitions. Second operand 3 states. [2021-01-06 19:25:36,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:25:36,953 INFO L93 Difference]: Finished difference Result 126082 states and 163414 transitions. [2021-01-06 19:25:36,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:25:36,953 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 193 [2021-01-06 19:25:36,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:25:37,014 INFO L225 Difference]: With dead ends: 126082 [2021-01-06 19:25:37,014 INFO L226 Difference]: Without dead ends: 66443 [2021-01-06 19:25:37,035 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 19:25:37,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66443 states. [2021-01-06 19:25:38,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66443 to 66443. [2021-01-06 19:25:38,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66443 states. [2021-01-06 19:25:38,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66443 states to 66443 states and 85993 transitions. [2021-01-06 19:25:38,310 INFO L78 Accepts]: Start accepts. Automaton has 66443 states and 85993 transitions. Word has length 193 [2021-01-06 19:25:38,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:25:38,310 INFO L481 AbstractCegarLoop]: Abstraction has 66443 states and 85993 transitions. [2021-01-06 19:25:38,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:25:38,310 INFO L276 IsEmpty]: Start isEmpty. Operand 66443 states and 85993 transitions. [2021-01-06 19:25:38,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-01-06 19:25:38,349 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:25:38,349 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:25:38,349 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-01-06 19:25:38,349 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:25:38,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:25:38,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1024669027, now seen corresponding path program 1 times [2021-01-06 19:25:38,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:25:38,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427331327] [2021-01-06 19:25:38,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:25:38,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:25:38,425 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:25:38,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427331327] [2021-01-06 19:25:38,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:25:38,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:25:38,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083929975] [2021-01-06 19:25:38,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:25:38,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:25:38,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:25:38,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:25:38,428 INFO L87 Difference]: Start difference. First operand 66443 states and 85993 transitions. Second operand 3 states. [2021-01-06 19:25:39,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:25:39,734 INFO L93 Difference]: Finished difference Result 129624 states and 168894 transitions. [2021-01-06 19:25:39,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:25:39,735 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 194 [2021-01-06 19:25:39,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:25:39,798 INFO L225 Difference]: With dead ends: 129624 [2021-01-06 19:25:39,798 INFO L226 Difference]: Without dead ends: 68750 [2021-01-06 19:25:39,818 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 19:25:39,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68750 states. [2021-01-06 19:25:41,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68750 to 68750. [2021-01-06 19:25:41,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68750 states. [2021-01-06 19:25:41,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68750 states to 68750 states and 89437 transitions. [2021-01-06 19:25:41,445 INFO L78 Accepts]: Start accepts. Automaton has 68750 states and 89437 transitions. Word has length 194 [2021-01-06 19:25:41,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:25:41,446 INFO L481 AbstractCegarLoop]: Abstraction has 68750 states and 89437 transitions. [2021-01-06 19:25:41,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:25:41,446 INFO L276 IsEmpty]: Start isEmpty. Operand 68750 states and 89437 transitions. [2021-01-06 19:25:41,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-01-06 19:25:41,485 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:25:41,486 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:25:41,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-01-06 19:25:41,486 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:25:41,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:25:41,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1296243398, now seen corresponding path program 1 times [2021-01-06 19:25:41,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:25:41,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338034982] [2021-01-06 19:25:41,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:25:41,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:25:41,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:25:41,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338034982] [2021-01-06 19:25:41,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:25:41,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:25:41,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485159277] [2021-01-06 19:25:41,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:25:41,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:25:41,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:25:41,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:25:41,559 INFO L87 Difference]: Start difference. First operand 68750 states and 89437 transitions. Second operand 3 states. [2021-01-06 19:25:43,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:25:43,369 INFO L93 Difference]: Finished difference Result 132898 states and 174646 transitions. [2021-01-06 19:25:43,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:25:43,370 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 195 [2021-01-06 19:25:43,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:25:43,446 INFO L225 Difference]: With dead ends: 132898 [2021-01-06 19:25:43,446 INFO L226 Difference]: Without dead ends: 73426 [2021-01-06 19:25:43,477 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 19:25:43,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73426 states. [2021-01-06 19:25:45,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73426 to 71186. [2021-01-06 19:25:45,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71186 states. [2021-01-06 19:25:45,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71186 states to 71186 states and 93399 transitions. [2021-01-06 19:25:45,347 INFO L78 Accepts]: Start accepts. Automaton has 71186 states and 93399 transitions. Word has length 195 [2021-01-06 19:25:45,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:25:45,348 INFO L481 AbstractCegarLoop]: Abstraction has 71186 states and 93399 transitions. [2021-01-06 19:25:45,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:25:45,348 INFO L276 IsEmpty]: Start isEmpty. Operand 71186 states and 93399 transitions. [2021-01-06 19:25:45,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-01-06 19:25:45,388 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:25:45,388 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:25:45,388 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-01-06 19:25:45,388 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:25:45,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:25:45,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1260230003, now seen corresponding path program 1 times [2021-01-06 19:25:45,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:25:45,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659310880] [2021-01-06 19:25:45,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:25:45,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:25:45,590 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:25:45,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659310880] [2021-01-06 19:25:45,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:25:45,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:25:45,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825075983] [2021-01-06 19:25:45,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:25:45,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:25:45,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:25:45,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:25:45,594 INFO L87 Difference]: Start difference. First operand 71186 states and 93399 transitions. Second operand 3 states. [2021-01-06 19:25:47,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:25:47,642 INFO L93 Difference]: Finished difference Result 135376 states and 178664 transitions. [2021-01-06 19:25:47,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:25:47,642 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 197 [2021-01-06 19:25:47,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:25:47,715 INFO L225 Difference]: With dead ends: 135376 [2021-01-06 19:25:47,716 INFO L226 Difference]: Without dead ends: 73468 [2021-01-06 19:25:47,752 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 19:25:47,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73468 states. [2021-01-06 19:25:49,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73468 to 71228. [2021-01-06 19:25:49,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71228 states. [2021-01-06 19:25:49,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71228 states to 71228 states and 93455 transitions. [2021-01-06 19:25:49,640 INFO L78 Accepts]: Start accepts. Automaton has 71228 states and 93455 transitions. Word has length 197 [2021-01-06 19:25:49,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:25:49,641 INFO L481 AbstractCegarLoop]: Abstraction has 71228 states and 93455 transitions. [2021-01-06 19:25:49,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:25:49,641 INFO L276 IsEmpty]: Start isEmpty. Operand 71228 states and 93455 transitions. [2021-01-06 19:25:49,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-01-06 19:25:49,682 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:25:49,682 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:25:49,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-01-06 19:25:49,682 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:25:49,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:25:49,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1059934906, now seen corresponding path program 1 times [2021-01-06 19:25:49,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:25:49,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583736515] [2021-01-06 19:25:49,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:25:49,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:25:49,764 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:25:49,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583736515] [2021-01-06 19:25:49,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:25:49,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:25:49,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935426353] [2021-01-06 19:25:49,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:25:49,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:25:49,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:25:49,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:25:49,768 INFO L87 Difference]: Start difference. First operand 71228 states and 93455 transitions. Second operand 3 states. [2021-01-06 19:25:52,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:25:52,316 INFO L93 Difference]: Finished difference Result 144330 states and 191952 transitions. [2021-01-06 19:25:52,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:25:52,316 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 199 [2021-01-06 19:25:52,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:25:52,396 INFO L225 Difference]: With dead ends: 144330 [2021-01-06 19:25:52,397 INFO L226 Difference]: Without dead ends: 78673 [2021-01-06 19:25:52,435 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 19:25:52,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78673 states. [2021-01-06 19:25:54,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78673 to 75061. [2021-01-06 19:25:54,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75061 states. [2021-01-06 19:25:54,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75061 states to 75061 states and 99688 transitions. [2021-01-06 19:25:54,890 INFO L78 Accepts]: Start accepts. Automaton has 75061 states and 99688 transitions. Word has length 199 [2021-01-06 19:25:54,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:25:54,891 INFO L481 AbstractCegarLoop]: Abstraction has 75061 states and 99688 transitions. [2021-01-06 19:25:54,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:25:54,891 INFO L276 IsEmpty]: Start isEmpty. Operand 75061 states and 99688 transitions. [2021-01-06 19:25:54,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-01-06 19:25:54,950 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:25:54,950 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:25:54,950 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-01-06 19:25:54,950 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:25:54,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:25:54,951 INFO L82 PathProgramCache]: Analyzing trace with hash -365408011, now seen corresponding path program 1 times [2021-01-06 19:25:54,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:25:54,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420626319] [2021-01-06 19:25:54,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:25:54,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:25:55,025 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:25:55,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420626319] [2021-01-06 19:25:55,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:25:55,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:25:55,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787431807] [2021-01-06 19:25:55,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:25:55,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:25:55,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:25:55,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:25:55,027 INFO L87 Difference]: Start difference. First operand 75061 states and 99688 transitions. Second operand 3 states. [2021-01-06 19:25:58,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:25:58,080 INFO L93 Difference]: Finished difference Result 148313 states and 198395 transitions. [2021-01-06 19:25:58,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:25:58,081 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 201 [2021-01-06 19:25:58,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:25:58,170 INFO L225 Difference]: With dead ends: 148313 [2021-01-06 19:25:58,170 INFO L226 Difference]: Without dead ends: 78823 [2021-01-06 19:25:58,207 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 19:25:58,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78823 states. [2021-01-06 19:26:00,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78823 to 75211. [2021-01-06 19:26:00,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75211 states. [2021-01-06 19:26:00,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75211 states to 75211 states and 99868 transitions. [2021-01-06 19:26:00,708 INFO L78 Accepts]: Start accepts. Automaton has 75211 states and 99868 transitions. Word has length 201 [2021-01-06 19:26:00,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:26:00,708 INFO L481 AbstractCegarLoop]: Abstraction has 75211 states and 99868 transitions. [2021-01-06 19:26:00,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:26:00,709 INFO L276 IsEmpty]: Start isEmpty. Operand 75211 states and 99868 transitions. [2021-01-06 19:26:00,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-01-06 19:26:00,750 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:26:00,751 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:26:00,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-01-06 19:26:00,751 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:26:00,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:26:00,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1010678470, now seen corresponding path program 1 times [2021-01-06 19:26:00,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:26:00,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821646962] [2021-01-06 19:26:00,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:26:00,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:26:00,817 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:26:00,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821646962] [2021-01-06 19:26:00,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:26:00,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:26:00,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885648551] [2021-01-06 19:26:00,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:26:00,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:26:00,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:26:00,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:26:00,819 INFO L87 Difference]: Start difference. First operand 75211 states and 99868 transitions. Second operand 3 states. [2021-01-06 19:26:04,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:26:04,486 INFO L93 Difference]: Finished difference Result 156729 states and 211911 transitions. [2021-01-06 19:26:04,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:26:04,486 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 203 [2021-01-06 19:26:04,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:26:04,703 INFO L225 Difference]: With dead ends: 156729 [2021-01-06 19:26:04,704 INFO L226 Difference]: Without dead ends: 87089 [2021-01-06 19:26:04,735 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 19:26:04,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87089 states. [2021-01-06 19:26:08,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87089 to 81525. [2021-01-06 19:26:08,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81525 states. [2021-01-06 19:26:08,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81525 states to 81525 states and 109984 transitions. [2021-01-06 19:26:08,193 INFO L78 Accepts]: Start accepts. Automaton has 81525 states and 109984 transitions. Word has length 203 [2021-01-06 19:26:08,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:26:08,194 INFO L481 AbstractCegarLoop]: Abstraction has 81525 states and 109984 transitions. [2021-01-06 19:26:08,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:26:08,194 INFO L276 IsEmpty]: Start isEmpty. Operand 81525 states and 109984 transitions. [2021-01-06 19:26:08,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-01-06 19:26:08,241 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:26:08,242 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:26:08,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-01-06 19:26:08,242 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:26:08,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:26:08,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1899979317, now seen corresponding path program 1 times [2021-01-06 19:26:08,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:26:08,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110916012] [2021-01-06 19:26:08,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:26:08,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:26:08,341 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:26:08,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110916012] [2021-01-06 19:26:08,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881331210] [2021-01-06 19:26:08,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:26:08,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:26:08,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 577 conjuncts, 2 conjunts are in the unsatisfiable core [2021-01-06 19:26:08,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:26:08,836 WARN L197 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 1 [2021-01-06 19:26:09,002 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-06 19:26:09,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-01-06 19:26:09,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2021-01-06 19:26:09,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337253780] [2021-01-06 19:26:09,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:26:09,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:26:09,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:26:09,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 19:26:09,006 INFO L87 Difference]: Start difference. First operand 81525 states and 109984 transitions. Second operand 3 states. [2021-01-06 19:26:13,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:26:13,013 INFO L93 Difference]: Finished difference Result 189466 states and 258049 transitions. [2021-01-06 19:26:13,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:26:13,014 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 205 [2021-01-06 19:26:13,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:26:13,147 INFO L225 Difference]: With dead ends: 189466 [2021-01-06 19:26:13,147 INFO L226 Difference]: Without dead ends: 117506 [2021-01-06 19:26:13,182 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 19:26:13,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117506 states. [2021-01-06 19:26:17,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117506 to 117504. [2021-01-06 19:26:17,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117504 states. [2021-01-06 19:26:17,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117504 states to 117504 states and 158869 transitions. [2021-01-06 19:26:17,847 INFO L78 Accepts]: Start accepts. Automaton has 117504 states and 158869 transitions. Word has length 205 [2021-01-06 19:26:17,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:26:17,847 INFO L481 AbstractCegarLoop]: Abstraction has 117504 states and 158869 transitions. [2021-01-06 19:26:17,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:26:17,848 INFO L276 IsEmpty]: Start isEmpty. Operand 117504 states and 158869 transitions. [2021-01-06 19:26:17,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-01-06 19:26:17,918 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:26:17,918 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:26:18,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2021-01-06 19:26:18,119 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:26:18,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:26:18,120 INFO L82 PathProgramCache]: Analyzing trace with hash 211035575, now seen corresponding path program 1 times [2021-01-06 19:26:18,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:26:18,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619527206] [2021-01-06 19:26:18,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:26:18,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:26:18,267 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:26:18,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619527206] [2021-01-06 19:26:18,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608465913] [2021-01-06 19:26:18,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:26:18,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:26:18,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 3 conjunts are in the unsatisfiable core [2021-01-06 19:26:18,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:26:18,683 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:26:18,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-01-06 19:26:18,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2021-01-06 19:26:18,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96693944] [2021-01-06 19:26:18,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:26:18,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:26:18,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:26:18,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 19:26:18,685 INFO L87 Difference]: Start difference. First operand 117504 states and 158869 transitions. Second operand 3 states. [2021-01-06 19:26:24,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:26:24,713 INFO L93 Difference]: Finished difference Result 238597 states and 325341 transitions. [2021-01-06 19:26:24,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:26:24,714 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 205 [2021-01-06 19:26:24,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:26:24,861 INFO L225 Difference]: With dead ends: 238597 [2021-01-06 19:26:24,862 INFO L226 Difference]: Without dead ends: 126664 [2021-01-06 19:26:24,915 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 19:26:24,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126664 states. [2021-01-06 19:26:29,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126664 to 118384. [2021-01-06 19:26:29,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118384 states. [2021-01-06 19:26:29,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118384 states to 118384 states and 159925 transitions. [2021-01-06 19:26:29,772 INFO L78 Accepts]: Start accepts. Automaton has 118384 states and 159925 transitions. Word has length 205 [2021-01-06 19:26:29,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:26:29,772 INFO L481 AbstractCegarLoop]: Abstraction has 118384 states and 159925 transitions. [2021-01-06 19:26:29,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:26:29,772 INFO L276 IsEmpty]: Start isEmpty. Operand 118384 states and 159925 transitions. [2021-01-06 19:26:29,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-01-06 19:26:29,840 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:26:29,840 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:26:30,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:26:30,045 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:26:30,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:26:30,045 INFO L82 PathProgramCache]: Analyzing trace with hash -1849216196, now seen corresponding path program 1 times [2021-01-06 19:26:30,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:26:30,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104891006] [2021-01-06 19:26:30,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:26:30,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:26:30,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:26:30,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104891006] [2021-01-06 19:26:30,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022893399] [2021-01-06 19:26:30,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:26:30,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:26:30,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 3 conjunts are in the unsatisfiable core [2021-01-06 19:26:30,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:26:30,766 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:26:30,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-01-06 19:26:30,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2021-01-06 19:26:30,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316386832] [2021-01-06 19:26:30,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:26:30,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:26:30,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:26:30,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 19:26:30,769 INFO L87 Difference]: Start difference. First operand 118384 states and 159925 transitions. Second operand 3 states. [2021-01-06 19:26:38,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:26:38,287 INFO L93 Difference]: Finished difference Result 261757 states and 361561 transitions. [2021-01-06 19:26:38,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:26:38,287 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 207 [2021-01-06 19:26:38,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:26:38,460 INFO L225 Difference]: With dead ends: 261757 [2021-01-06 19:26:38,460 INFO L226 Difference]: Without dead ends: 148944 [2021-01-06 19:26:38,516 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 19:26:38,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148944 states. [2021-01-06 19:26:45,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148944 to 136372. [2021-01-06 19:26:45,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136372 states. [2021-01-06 19:26:45,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136372 states to 136372 states and 187751 transitions. [2021-01-06 19:26:45,226 INFO L78 Accepts]: Start accepts. Automaton has 136372 states and 187751 transitions. Word has length 207 [2021-01-06 19:26:45,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:26:45,226 INFO L481 AbstractCegarLoop]: Abstraction has 136372 states and 187751 transitions. [2021-01-06 19:26:45,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:26:45,226 INFO L276 IsEmpty]: Start isEmpty. Operand 136372 states and 187751 transitions. [2021-01-06 19:26:45,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-01-06 19:26:45,622 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:26:45,623 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:26:45,838 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:26:45,839 INFO L429 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:26:45,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:26:45,840 INFO L82 PathProgramCache]: Analyzing trace with hash -211214601, now seen corresponding path program 1 times [2021-01-06 19:26:45,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:26:45,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224932511] [2021-01-06 19:26:45,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:26:45,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:26:45,937 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:26:45,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224932511] [2021-01-06 19:26:45,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679729124] [2021-01-06 19:26:45,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:26:46,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:26:46,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 602 conjuncts, 3 conjunts are in the unsatisfiable core [2021-01-06 19:26:46,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:26:46,274 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-06 19:26:46,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-01-06 19:26:46,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2021-01-06 19:26:46,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519250521] [2021-01-06 19:26:46,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:26:46,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:26:46,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:26:46,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 19:26:46,276 INFO L87 Difference]: Start difference. First operand 136372 states and 187751 transitions. Second operand 3 states. [2021-01-06 19:26:51,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:26:51,138 INFO L93 Difference]: Finished difference Result 231637 states and 319641 transitions. [2021-01-06 19:26:51,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:26:51,138 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 209 [2021-01-06 19:26:51,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:26:51,265 INFO L225 Difference]: With dead ends: 231637 [2021-01-06 19:26:51,265 INFO L226 Difference]: Without dead ends: 105323 [2021-01-06 19:26:51,319 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 19:26:51,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105323 states. [2021-01-06 19:26:56,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105323 to 105323. [2021-01-06 19:26:56,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105323 states. [2021-01-06 19:26:56,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105323 states to 105323 states and 143608 transitions. [2021-01-06 19:26:56,280 INFO L78 Accepts]: Start accepts. Automaton has 105323 states and 143608 transitions. Word has length 209 [2021-01-06 19:26:56,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:26:56,280 INFO L481 AbstractCegarLoop]: Abstraction has 105323 states and 143608 transitions. [2021-01-06 19:26:56,280 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:26:56,280 INFO L276 IsEmpty]: Start isEmpty. Operand 105323 states and 143608 transitions. [2021-01-06 19:26:56,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-01-06 19:26:56,342 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:26:56,343 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:26:56,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:26:56,547 INFO L429 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:26:56,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:26:56,547 INFO L82 PathProgramCache]: Analyzing trace with hash -573254857, now seen corresponding path program 1 times [2021-01-06 19:26:56,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:26:56,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79956433] [2021-01-06 19:26:56,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:26:56,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:26:56,661 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:26:56,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79956433] [2021-01-06 19:26:56,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820399520] [2021-01-06 19:26:56,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:26:56,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:26:56,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 3 conjunts are in the unsatisfiable core [2021-01-06 19:26:56,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:26:57,045 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-06 19:26:57,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-01-06 19:26:57,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 6 [2021-01-06 19:26:57,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986291255] [2021-01-06 19:26:57,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 19:26:57,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:26:57,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 19:26:57,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 19:26:57,047 INFO L87 Difference]: Start difference. First operand 105323 states and 143608 transitions. Second operand 4 states. [2021-01-06 19:27:06,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:27:06,836 INFO L93 Difference]: Finished difference Result 294744 states and 399616 transitions. [2021-01-06 19:27:06,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 19:27:06,837 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 209 [2021-01-06 19:27:06,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:27:07,510 INFO L225 Difference]: With dead ends: 294744 [2021-01-06 19:27:07,510 INFO L226 Difference]: Without dead ends: 231599 [2021-01-06 19:27:07,628 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 19:27:07,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231599 states. [2021-01-06 19:27:16,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231599 to 168462. [2021-01-06 19:27:16,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168462 states. [2021-01-06 19:27:16,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168462 states to 168462 states and 228941 transitions. [2021-01-06 19:27:16,621 INFO L78 Accepts]: Start accepts. Automaton has 168462 states and 228941 transitions. Word has length 209 [2021-01-06 19:27:16,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:27:16,621 INFO L481 AbstractCegarLoop]: Abstraction has 168462 states and 228941 transitions. [2021-01-06 19:27:16,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 19:27:16,621 INFO L276 IsEmpty]: Start isEmpty. Operand 168462 states and 228941 transitions. [2021-01-06 19:27:16,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2021-01-06 19:27:16,767 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:27:16,768 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:27:16,982 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-01-06 19:27:16,983 INFO L429 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:27:16,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:27:16,984 INFO L82 PathProgramCache]: Analyzing trace with hash 963844899, now seen corresponding path program 1 times [2021-01-06 19:27:16,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:27:16,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002400167] [2021-01-06 19:27:16,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:27:17,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:27:17,597 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-01-06 19:27:17,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002400167] [2021-01-06 19:27:17,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928161841] [2021-01-06 19:27:17,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:27:17,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:27:17,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 832 conjuncts, 3 conjunts are in the unsatisfiable core [2021-01-06 19:27:17,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:27:18,344 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-06 19:27:18,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-01-06 19:27:18,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 6 [2021-01-06 19:27:18,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710209914] [2021-01-06 19:27:18,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 19:27:18,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:27:18,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 19:27:18,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 19:27:18,347 INFO L87 Difference]: Start difference. First operand 168462 states and 228941 transitions. Second operand 4 states. [2021-01-06 19:27:25,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:27:25,398 INFO L93 Difference]: Finished difference Result 287694 states and 391288 transitions. [2021-01-06 19:27:25,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 19:27:25,399 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 390 [2021-01-06 19:27:25,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:27:25,712 INFO L225 Difference]: With dead ends: 287694 [2021-01-06 19:27:25,712 INFO L226 Difference]: Without dead ends: 161410 [2021-01-06 19:27:25,898 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 388 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 19:27:26,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161410 states. [2021-01-06 19:27:34,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161410 to 161410. [2021-01-06 19:27:34,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161410 states. [2021-01-06 19:27:34,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161410 states to 161410 states and 220229 transitions. [2021-01-06 19:27:34,790 INFO L78 Accepts]: Start accepts. Automaton has 161410 states and 220229 transitions. Word has length 390 [2021-01-06 19:27:34,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:27:34,792 INFO L481 AbstractCegarLoop]: Abstraction has 161410 states and 220229 transitions. [2021-01-06 19:27:34,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 19:27:34,792 INFO L276 IsEmpty]: Start isEmpty. Operand 161410 states and 220229 transitions. [2021-01-06 19:27:35,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2021-01-06 19:27:35,268 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:27:35,279 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:27:35,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:27:35,493 INFO L429 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:27:35,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:27:35,494 INFO L82 PathProgramCache]: Analyzing trace with hash 225683825, now seen corresponding path program 1 times [2021-01-06 19:27:35,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:27:35,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226400774] [2021-01-06 19:27:35,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:27:35,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:27:35,727 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-01-06 19:27:35,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226400774] [2021-01-06 19:27:35,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30825849] [2021-01-06 19:27:35,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:27:36,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:27:36,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 1036 conjuncts, 3 conjunts are in the unsatisfiable core [2021-01-06 19:27:36,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:27:36,525 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-06 19:27:36,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-01-06 19:27:36,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2021-01-06 19:27:36,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763420170] [2021-01-06 19:27:36,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:27:36,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:27:36,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:27:36,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 19:27:36,527 INFO L87 Difference]: Start difference. First operand 161410 states and 220229 transitions. Second operand 3 states. [2021-01-06 19:27:43,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:27:43,326 INFO L93 Difference]: Finished difference Result 318569 states and 435153 transitions. [2021-01-06 19:27:43,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:27:43,326 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 417 [2021-01-06 19:27:43,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:27:43,524 INFO L225 Difference]: With dead ends: 318569 [2021-01-06 19:27:43,525 INFO L226 Difference]: Without dead ends: 161410 [2021-01-06 19:27:43,602 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 416 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 19:27:43,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161410 states. [2021-01-06 19:27:51,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161410 to 161410. [2021-01-06 19:27:51,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161410 states. [2021-01-06 19:27:51,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161410 states to 161410 states and 218469 transitions. [2021-01-06 19:27:51,630 INFO L78 Accepts]: Start accepts. Automaton has 161410 states and 218469 transitions. Word has length 417 [2021-01-06 19:27:51,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:27:51,631 INFO L481 AbstractCegarLoop]: Abstraction has 161410 states and 218469 transitions. [2021-01-06 19:27:51,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:27:51,631 INFO L276 IsEmpty]: Start isEmpty. Operand 161410 states and 218469 transitions. [2021-01-06 19:27:51,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2021-01-06 19:27:51,772 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:27:51,773 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:27:51,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-01-06 19:27:51,989 INFO L429 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:27:51,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:27:51,990 INFO L82 PathProgramCache]: Analyzing trace with hash -193413711, now seen corresponding path program 1 times [2021-01-06 19:27:51,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:27:51,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332512425] [2021-01-06 19:27:51,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:27:52,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:27:52,514 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-01-06 19:27:52,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332512425] [2021-01-06 19:27:52,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053803174] [2021-01-06 19:27:52,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:27:52,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:27:52,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 1042 conjuncts, 3 conjunts are in the unsatisfiable core [2021-01-06 19:27:52,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:27:53,193 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-06 19:27:53,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-01-06 19:27:53,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 6 [2021-01-06 19:27:53,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323163694] [2021-01-06 19:27:53,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 19:27:53,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:27:53,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 19:27:53,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-06 19:27:53,199 INFO L87 Difference]: Start difference. First operand 161410 states and 218469 transitions. Second operand 4 states.