java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/systemc/pc_sfifo_3.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-efa34d5 [2019-09-16 17:10:05,605 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-16 17:10:05,607 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-16 17:10:05,618 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-16 17:10:05,619 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-16 17:10:05,620 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-16 17:10:05,622 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-16 17:10:05,624 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-16 17:10:05,625 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-16 17:10:05,626 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-16 17:10:05,627 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-16 17:10:05,629 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-16 17:10:05,629 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-16 17:10:05,630 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-16 17:10:05,631 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-16 17:10:05,632 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-16 17:10:05,633 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-16 17:10:05,634 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-16 17:10:05,636 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-16 17:10:05,638 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-16 17:10:05,639 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-16 17:10:05,640 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-16 17:10:05,641 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-16 17:10:05,642 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-16 17:10:05,644 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-16 17:10:05,647 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-16 17:10:05,648 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-16 17:10:05,649 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-16 17:10:05,650 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-16 17:10:05,651 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-16 17:10:05,651 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-16 17:10:05,652 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-16 17:10:05,652 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-16 17:10:05,652 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-16 17:10:05,653 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-16 17:10:05,654 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-16 17:10:05,654 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-16 17:10:05,669 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-16 17:10:05,669 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-16 17:10:05,669 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-16 17:10:05,669 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-16 17:10:05,670 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-16 17:10:05,670 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-16 17:10:05,671 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-16 17:10:05,671 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-16 17:10:05,671 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-16 17:10:05,671 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-16 17:10:05,672 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-16 17:10:05,672 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-16 17:10:05,672 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-16 17:10:05,673 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-16 17:10:05,673 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-16 17:10:05,673 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-16 17:10:05,673 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-16 17:10:05,673 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-16 17:10:05,674 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-16 17:10:05,674 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-16 17:10:05,674 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-16 17:10:05,674 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-16 17:10:05,674 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-16 17:10:05,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 17:10:05,675 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-16 17:10:05,675 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-16 17:10:05,675 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-16 17:10:05,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-16 17:10:05,676 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-16 17:10:05,676 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-16 17:10:05,704 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-16 17:10:05,719 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-16 17:10:05,723 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-16 17:10:05,724 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-16 17:10:05,726 INFO L275 PluginConnector]: CDTParser initialized [2019-09-16 17:10:05,727 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/pc_sfifo_3.cil.c [2019-09-16 17:10:05,789 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b875d922/745f144d073747868b06aa1538b39f71/FLAGf68b9fa04 [2019-09-16 17:10:06,283 INFO L306 CDTParser]: Found 1 translation units. [2019-09-16 17:10:06,284 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/pc_sfifo_3.cil.c [2019-09-16 17:10:06,295 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b875d922/745f144d073747868b06aa1538b39f71/FLAGf68b9fa04 [2019-09-16 17:10:06,613 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b875d922/745f144d073747868b06aa1538b39f71 [2019-09-16 17:10:06,624 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-16 17:10:06,625 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-16 17:10:06,626 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-16 17:10:06,627 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-16 17:10:06,630 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-16 17:10:06,631 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:10:06" (1/1) ... [2019-09-16 17:10:06,634 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e61786b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:10:06, skipping insertion in model container [2019-09-16 17:10:06,634 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:10:06" (1/1) ... [2019-09-16 17:10:06,642 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-16 17:10:06,692 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-16 17:10:06,951 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:10:06,958 INFO L188 MainTranslator]: Completed pre-run [2019-09-16 17:10:07,103 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:10:07,124 INFO L192 MainTranslator]: Completed translation [2019-09-16 17:10:07,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:10:07 WrapperNode [2019-09-16 17:10:07,125 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-16 17:10:07,126 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-16 17:10:07,126 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-16 17:10:07,126 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-16 17:10:07,141 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:10:07" (1/1) ... [2019-09-16 17:10:07,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:10:07" (1/1) ... [2019-09-16 17:10:07,150 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:10:07" (1/1) ... [2019-09-16 17:10:07,150 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:10:07" (1/1) ... [2019-09-16 17:10:07,160 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:10:07" (1/1) ... [2019-09-16 17:10:07,178 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:10:07" (1/1) ... [2019-09-16 17:10:07,181 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:10:07" (1/1) ... [2019-09-16 17:10:07,184 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-16 17:10:07,185 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-16 17:10:07,185 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-16 17:10:07,185 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-16 17:10:07,188 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:10:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2019-09-16 17:10:07,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-16 17:10:07,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-16 17:10:07,244 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2019-09-16 17:10:07,244 INFO L138 BoogieDeclarations]: Found implementation of procedure update_fifo_q [2019-09-16 17:10:07,245 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2019-09-16 17:10:07,245 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2019-09-16 17:10:07,245 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2019-09-16 17:10:07,245 INFO L138 BoogieDeclarations]: Found implementation of procedure do_write_p [2019-09-16 17:10:07,246 INFO L138 BoogieDeclarations]: Found implementation of procedure do_read_c [2019-09-16 17:10:07,246 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2019-09-16 17:10:07,246 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2019-09-16 17:10:07,246 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2019-09-16 17:10:07,246 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2019-09-16 17:10:07,246 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2019-09-16 17:10:07,246 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2019-09-16 17:10:07,247 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2019-09-16 17:10:07,247 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2019-09-16 17:10:07,247 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2019-09-16 17:10:07,247 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2019-09-16 17:10:07,247 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2019-09-16 17:10:07,247 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2019-09-16 17:10:07,248 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-16 17:10:07,248 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-16 17:10:07,248 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-16 17:10:07,248 INFO L130 BoogieDeclarations]: Found specification of procedure error [2019-09-16 17:10:07,248 INFO L130 BoogieDeclarations]: Found specification of procedure update_fifo_q [2019-09-16 17:10:07,249 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2019-09-16 17:10:07,249 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2019-09-16 17:10:07,249 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2019-09-16 17:10:07,249 INFO L130 BoogieDeclarations]: Found specification of procedure do_write_p [2019-09-16 17:10:07,249 INFO L130 BoogieDeclarations]: Found specification of procedure do_read_c [2019-09-16 17:10:07,249 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2019-09-16 17:10:07,250 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2019-09-16 17:10:07,250 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2019-09-16 17:10:07,250 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2019-09-16 17:10:07,250 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2019-09-16 17:10:07,250 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2019-09-16 17:10:07,250 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2019-09-16 17:10:07,250 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2019-09-16 17:10:07,251 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2019-09-16 17:10:07,251 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2019-09-16 17:10:07,251 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2019-09-16 17:10:07,251 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2019-09-16 17:10:07,251 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-16 17:10:07,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-16 17:10:07,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-16 17:10:07,811 INFO L683 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume 1 == ~q_free~0;~c_dr_st~0 := 2;~c_dr_pc~0 := 2;~a_t~0 := ~a~0; [2019-09-16 17:10:07,811 INFO L683 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !(1 == ~q_free~0); [2019-09-16 17:10:07,820 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-16 17:10:07,821 INFO L283 CfgBuilder]: Removed 4 assume(true) statements. [2019-09-16 17:10:07,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:10:07 BoogieIcfgContainer [2019-09-16 17:10:07,822 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-16 17:10:07,823 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-16 17:10:07,824 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-16 17:10:07,827 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-16 17:10:07,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 05:10:06" (1/3) ... [2019-09-16 17:10:07,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7311a1cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:10:07, skipping insertion in model container [2019-09-16 17:10:07,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:10:07" (2/3) ... [2019-09-16 17:10:07,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7311a1cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:10:07, skipping insertion in model container [2019-09-16 17:10:07,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:10:07" (3/3) ... [2019-09-16 17:10:07,831 INFO L109 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil.c [2019-09-16 17:10:07,841 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-16 17:10:07,850 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-16 17:10:07,868 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-16 17:10:07,896 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-16 17:10:07,897 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-16 17:10:07,897 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-16 17:10:07,897 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-16 17:10:07,898 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-16 17:10:07,898 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-16 17:10:07,898 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-16 17:10:07,898 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-16 17:10:07,920 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states. [2019-09-16 17:10:07,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-09-16 17:10:07,936 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:10:07,938 INFO L407 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] [2019-09-16 17:10:07,941 INFO L418 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:10:07,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:10:07,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1427944937, now seen corresponding path program 1 times [2019-09-16 17:10:07,951 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:10:08,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:08,015 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:10:08,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:08,015 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:10:08,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:10:08,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:10:08,308 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:10:08,309 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-16 17:10:08,309 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:10:08,316 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-16 17:10:08,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-16 17:10:08,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-16 17:10:08,335 INFO L87 Difference]: Start difference. First operand 156 states. Second operand 5 states. [2019-09-16 17:10:09,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:10:09,278 INFO L93 Difference]: Finished difference Result 312 states and 418 transitions. [2019-09-16 17:10:09,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-16 17:10:09,280 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2019-09-16 17:10:09,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:10:09,302 INFO L225 Difference]: With dead ends: 312 [2019-09-16 17:10:09,302 INFO L226 Difference]: Without dead ends: 296 [2019-09-16 17:10:09,303 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-16 17:10:09,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2019-09-16 17:10:09,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 271. [2019-09-16 17:10:09,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2019-09-16 17:10:09,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 363 transitions. [2019-09-16 17:10:09,384 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 363 transitions. Word has length 78 [2019-09-16 17:10:09,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:10:09,385 INFO L475 AbstractCegarLoop]: Abstraction has 271 states and 363 transitions. [2019-09-16 17:10:09,385 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-16 17:10:09,385 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 363 transitions. [2019-09-16 17:10:09,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-09-16 17:10:09,390 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:10:09,391 INFO L407 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] [2019-09-16 17:10:09,391 INFO L418 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:10:09,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:10:09,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1440144215, now seen corresponding path program 1 times [2019-09-16 17:10:09,392 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:10:09,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:09,394 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:10:09,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:09,394 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:10:09,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:10:09,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:10:09,543 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:10:09,543 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-16 17:10:09,543 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:10:09,545 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-16 17:10:09,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-16 17:10:09,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-16 17:10:09,546 INFO L87 Difference]: Start difference. First operand 271 states and 363 transitions. Second operand 6 states. [2019-09-16 17:10:10,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:10:10,568 INFO L93 Difference]: Finished difference Result 493 states and 688 transitions. [2019-09-16 17:10:10,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-16 17:10:10,569 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2019-09-16 17:10:10,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:10:10,575 INFO L225 Difference]: With dead ends: 493 [2019-09-16 17:10:10,575 INFO L226 Difference]: Without dead ends: 493 [2019-09-16 17:10:10,576 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-09-16 17:10:10,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2019-09-16 17:10:10,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 416. [2019-09-16 17:10:10,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2019-09-16 17:10:10,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 562 transitions. [2019-09-16 17:10:10,626 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 562 transitions. Word has length 78 [2019-09-16 17:10:10,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:10:10,626 INFO L475 AbstractCegarLoop]: Abstraction has 416 states and 562 transitions. [2019-09-16 17:10:10,626 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-16 17:10:10,627 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 562 transitions. [2019-09-16 17:10:10,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-09-16 17:10:10,632 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:10:10,632 INFO L407 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] [2019-09-16 17:10:10,633 INFO L418 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:10:10,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:10:10,633 INFO L82 PathProgramCache]: Analyzing trace with hash -53358805, now seen corresponding path program 1 times [2019-09-16 17:10:10,633 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:10:10,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:10,635 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:10:10,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:10,636 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:10:10,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:10:10,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:10:10,789 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:10:10,789 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-16 17:10:10,789 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:10:10,789 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-16 17:10:10,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-16 17:10:10,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-16 17:10:10,790 INFO L87 Difference]: Start difference. First operand 416 states and 562 transitions. Second operand 4 states. [2019-09-16 17:10:11,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:10:11,050 INFO L93 Difference]: Finished difference Result 774 states and 1022 transitions. [2019-09-16 17:10:11,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-16 17:10:11,052 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2019-09-16 17:10:11,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:10:11,058 INFO L225 Difference]: With dead ends: 774 [2019-09-16 17:10:11,059 INFO L226 Difference]: Without dead ends: 774 [2019-09-16 17:10:11,059 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-16 17:10:11,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2019-09-16 17:10:11,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 761. [2019-09-16 17:10:11,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 761 states. [2019-09-16 17:10:11,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 1010 transitions. [2019-09-16 17:10:11,104 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 1010 transitions. Word has length 78 [2019-09-16 17:10:11,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:10:11,105 INFO L475 AbstractCegarLoop]: Abstraction has 761 states and 1010 transitions. [2019-09-16 17:10:11,105 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-16 17:10:11,105 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 1010 transitions. [2019-09-16 17:10:11,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2019-09-16 17:10:11,110 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:10:11,111 INFO L407 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] [2019-09-16 17:10:11,111 INFO L418 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:10:11,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:10:11,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1828215755, now seen corresponding path program 1 times [2019-09-16 17:10:11,112 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:10:11,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:11,113 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:10:11,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:11,113 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:10:11,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:10:11,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:10:11,216 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:10:11,216 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-16 17:10:11,216 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:10:11,217 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-16 17:10:11,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-16 17:10:11,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-16 17:10:11,219 INFO L87 Difference]: Start difference. First operand 761 states and 1010 transitions. Second operand 6 states. [2019-09-16 17:10:11,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:10:11,268 INFO L93 Difference]: Finished difference Result 801 states and 1061 transitions. [2019-09-16 17:10:11,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-16 17:10:11,268 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2019-09-16 17:10:11,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:10:11,274 INFO L225 Difference]: With dead ends: 801 [2019-09-16 17:10:11,274 INFO L226 Difference]: Without dead ends: 801 [2019-09-16 17:10:11,275 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-16 17:10:11,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2019-09-16 17:10:11,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 781. [2019-09-16 17:10:11,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 781 states. [2019-09-16 17:10:11,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 781 states to 781 states and 1028 transitions. [2019-09-16 17:10:11,326 INFO L78 Accepts]: Start accepts. Automaton has 781 states and 1028 transitions. Word has length 79 [2019-09-16 17:10:11,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:10:11,328 INFO L475 AbstractCegarLoop]: Abstraction has 781 states and 1028 transitions. [2019-09-16 17:10:11,328 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-16 17:10:11,328 INFO L276 IsEmpty]: Start isEmpty. Operand 781 states and 1028 transitions. [2019-09-16 17:10:11,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2019-09-16 17:10:11,336 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:10:11,337 INFO L407 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] [2019-09-16 17:10:11,337 INFO L418 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:10:11,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:10:11,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1580069261, now seen corresponding path program 1 times [2019-09-16 17:10:11,338 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:10:11,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:11,343 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:10:11,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:11,343 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:10:11,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:10:11,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:10:11,509 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:10:11,509 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-16 17:10:11,509 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:10:11,510 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-16 17:10:11,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-16 17:10:11,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-16 17:10:11,512 INFO L87 Difference]: Start difference. First operand 781 states and 1028 transitions. Second operand 4 states. [2019-09-16 17:10:11,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:10:11,796 INFO L93 Difference]: Finished difference Result 1464 states and 1898 transitions. [2019-09-16 17:10:11,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-16 17:10:11,797 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 79 [2019-09-16 17:10:11,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:10:11,804 INFO L225 Difference]: With dead ends: 1464 [2019-09-16 17:10:11,805 INFO L226 Difference]: Without dead ends: 751 [2019-09-16 17:10:11,805 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-16 17:10:11,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2019-09-16 17:10:11,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 711. [2019-09-16 17:10:11,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 711 states. [2019-09-16 17:10:11,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 923 transitions. [2019-09-16 17:10:11,838 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 923 transitions. Word has length 79 [2019-09-16 17:10:11,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:10:11,839 INFO L475 AbstractCegarLoop]: Abstraction has 711 states and 923 transitions. [2019-09-16 17:10:11,839 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-16 17:10:11,839 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 923 transitions. [2019-09-16 17:10:11,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-09-16 17:10:11,841 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:10:11,842 INFO L407 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] [2019-09-16 17:10:11,843 INFO L418 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:10:11,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:10:11,843 INFO L82 PathProgramCache]: Analyzing trace with hash -1122686250, now seen corresponding path program 1 times [2019-09-16 17:10:11,844 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:10:11,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:11,847 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:10:11,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:11,852 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:10:11,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:10:11,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:10:11,988 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:10:11,988 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-16 17:10:11,989 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:10:11,989 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-16 17:10:11,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-16 17:10:11,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-16 17:10:11,992 INFO L87 Difference]: Start difference. First operand 711 states and 923 transitions. Second operand 6 states. [2019-09-16 17:10:12,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:10:12,034 INFO L93 Difference]: Finished difference Result 753 states and 974 transitions. [2019-09-16 17:10:12,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-16 17:10:12,034 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2019-09-16 17:10:12,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:10:12,039 INFO L225 Difference]: With dead ends: 753 [2019-09-16 17:10:12,039 INFO L226 Difference]: Without dead ends: 753 [2019-09-16 17:10:12,040 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-16 17:10:12,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2019-09-16 17:10:12,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 741. [2019-09-16 17:10:12,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 741 states. [2019-09-16 17:10:12,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 953 transitions. [2019-09-16 17:10:12,069 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 953 transitions. Word has length 80 [2019-09-16 17:10:12,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:10:12,070 INFO L475 AbstractCegarLoop]: Abstraction has 741 states and 953 transitions. [2019-09-16 17:10:12,070 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-16 17:10:12,070 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 953 transitions. [2019-09-16 17:10:12,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-09-16 17:10:12,077 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:10:12,078 INFO L407 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] [2019-09-16 17:10:12,078 INFO L418 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:10:12,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:10:12,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1195072808, now seen corresponding path program 1 times [2019-09-16 17:10:12,079 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:10:12,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:12,082 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:10:12,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:12,083 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:10:12,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:10:12,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:10:12,174 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:10:12,175 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-16 17:10:12,175 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:10:12,176 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-16 17:10:12,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-16 17:10:12,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-16 17:10:12,177 INFO L87 Difference]: Start difference. First operand 741 states and 953 transitions. Second operand 6 states. [2019-09-16 17:10:13,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:10:13,183 INFO L93 Difference]: Finished difference Result 897 states and 1168 transitions. [2019-09-16 17:10:13,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-16 17:10:13,183 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2019-09-16 17:10:13,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:10:13,189 INFO L225 Difference]: With dead ends: 897 [2019-09-16 17:10:13,189 INFO L226 Difference]: Without dead ends: 897 [2019-09-16 17:10:13,190 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-09-16 17:10:13,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2019-09-16 17:10:13,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 760. [2019-09-16 17:10:13,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 760 states. [2019-09-16 17:10:13,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 967 transitions. [2019-09-16 17:10:13,221 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 967 transitions. Word has length 80 [2019-09-16 17:10:13,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:10:13,221 INFO L475 AbstractCegarLoop]: Abstraction has 760 states and 967 transitions. [2019-09-16 17:10:13,221 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-16 17:10:13,222 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 967 transitions. [2019-09-16 17:10:13,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-09-16 17:10:13,223 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:10:13,223 INFO L407 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] [2019-09-16 17:10:13,224 INFO L418 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:10:13,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:10:13,224 INFO L82 PathProgramCache]: Analyzing trace with hash -1704545898, now seen corresponding path program 1 times [2019-09-16 17:10:13,224 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:10:13,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:13,226 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:10:13,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:13,226 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:10:13,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:10:13,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:10:13,273 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:10:13,274 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-16 17:10:13,274 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:10:13,275 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-16 17:10:13,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-16 17:10:13,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-16 17:10:13,276 INFO L87 Difference]: Start difference. First operand 760 states and 967 transitions. Second operand 3 states. [2019-09-16 17:10:13,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:10:13,313 INFO L93 Difference]: Finished difference Result 1435 states and 1860 transitions. [2019-09-16 17:10:13,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-16 17:10:13,314 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2019-09-16 17:10:13,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:10:13,323 INFO L225 Difference]: With dead ends: 1435 [2019-09-16 17:10:13,324 INFO L226 Difference]: Without dead ends: 1435 [2019-09-16 17:10:13,324 INFO L636 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 [2019-09-16 17:10:13,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1435 states. [2019-09-16 17:10:13,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1435 to 1423. [2019-09-16 17:10:13,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1423 states. [2019-09-16 17:10:13,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1423 states to 1423 states and 1848 transitions. [2019-09-16 17:10:13,384 INFO L78 Accepts]: Start accepts. Automaton has 1423 states and 1848 transitions. Word has length 80 [2019-09-16 17:10:13,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:10:13,385 INFO L475 AbstractCegarLoop]: Abstraction has 1423 states and 1848 transitions. [2019-09-16 17:10:13,385 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-16 17:10:13,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1423 states and 1848 transitions. [2019-09-16 17:10:13,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2019-09-16 17:10:13,389 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:10:13,389 INFO L407 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] [2019-09-16 17:10:13,389 INFO L418 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:10:13,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:10:13,390 INFO L82 PathProgramCache]: Analyzing trace with hash 683659270, now seen corresponding path program 1 times [2019-09-16 17:10:13,390 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:10:13,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:13,392 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:10:13,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:13,392 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:10:13,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:10:13,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:10:13,451 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:10:13,452 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-16 17:10:13,452 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:10:13,452 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-16 17:10:13,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-16 17:10:13,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-16 17:10:13,453 INFO L87 Difference]: Start difference. First operand 1423 states and 1848 transitions. Second operand 3 states. [2019-09-16 17:10:13,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:10:13,477 INFO L93 Difference]: Finished difference Result 1351 states and 1739 transitions. [2019-09-16 17:10:13,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-16 17:10:13,478 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2019-09-16 17:10:13,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:10:13,484 INFO L225 Difference]: With dead ends: 1351 [2019-09-16 17:10:13,484 INFO L226 Difference]: Without dead ends: 0 [2019-09-16 17:10:13,485 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-16 17:10:13,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-16 17:10:13,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-16 17:10:13,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-16 17:10:13,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-16 17:10:13,489 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 81 [2019-09-16 17:10:13,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:10:13,490 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-16 17:10:13,491 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-16 17:10:13,491 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-16 17:10:13,491 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-16 17:10:13,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 05:10:13 BoogieIcfgContainer [2019-09-16 17:10:13,499 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-16 17:10:13,503 INFO L168 Benchmark]: Toolchain (without parser) took 6875.68 ms. Allocated memory was 138.9 MB in the beginning and 323.5 MB in the end (delta: 184.5 MB). Free memory was 86.9 MB in the beginning and 79.7 MB in the end (delta: 7.3 MB). Peak memory consumption was 191.8 MB. Max. memory is 7.1 GB. [2019-09-16 17:10:13,504 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory is still 104.4 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-09-16 17:10:13,507 INFO L168 Benchmark]: CACSL2BoogieTranslator took 498.85 ms. Allocated memory was 138.9 MB in the beginning and 199.2 MB in the end (delta: 60.3 MB). Free memory was 86.5 MB in the beginning and 174.2 MB in the end (delta: -87.6 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2019-09-16 17:10:13,509 INFO L168 Benchmark]: Boogie Preprocessor took 58.67 ms. Allocated memory is still 199.2 MB. Free memory was 174.2 MB in the beginning and 172.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. [2019-09-16 17:10:13,510 INFO L168 Benchmark]: RCFGBuilder took 637.78 ms. Allocated memory is still 199.2 MB. Free memory was 172.3 MB in the beginning and 136.9 MB in the end (delta: 35.5 MB). Peak memory consumption was 35.5 MB. Max. memory is 7.1 GB. [2019-09-16 17:10:13,513 INFO L168 Benchmark]: TraceAbstraction took 5675.70 ms. Allocated memory was 199.2 MB in the beginning and 323.5 MB in the end (delta: 124.3 MB). Free memory was 136.9 MB in the beginning and 79.7 MB in the end (delta: 57.2 MB). Peak memory consumption was 181.4 MB. Max. memory is 7.1 GB. [2019-09-16 17:10:13,522 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory is still 104.4 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 498.85 ms. Allocated memory was 138.9 MB in the beginning and 199.2 MB in the end (delta: 60.3 MB). Free memory was 86.5 MB in the beginning and 174.2 MB in the end (delta: -87.6 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 58.67 ms. Allocated memory is still 199.2 MB. Free memory was 174.2 MB in the beginning and 172.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 637.78 ms. Allocated memory is still 199.2 MB. Free memory was 172.3 MB in the beginning and 136.9 MB in the end (delta: 35.5 MB). Peak memory consumption was 35.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5675.70 ms. Allocated memory was 199.2 MB in the beginning and 323.5 MB in the end (delta: 124.3 MB). Free memory was 136.9 MB in the beginning and 79.7 MB in the end (delta: 57.2 MB). Peak memory consumption was 181.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 9]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 22 procedures, 158 locations, 1 error locations. SAFE Result, 5.6s OverallTime, 9 OverallIterations, 1 TraceHistogramMax, 3.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2055 SDtfs, 2196 SDslu, 2591 SDs, 0 SdLazy, 2166 SolverSat, 483 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 76 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1423occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 336 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 713 NumberOfCodeBlocks, 713 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 704 ConstructedInterpolants, 0 QuantifiedInterpolants, 82582 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...