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-fea9116 [2019-09-20 13:31:52,568 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:31:52,570 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:31:52,582 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:31:52,583 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:31:52,584 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:31:52,585 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:31:52,587 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:31:52,589 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:31:52,590 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:31:52,591 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:31:52,592 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:31:52,592 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:31:52,593 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:31:52,594 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:31:52,595 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:31:52,596 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:31:52,597 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:31:52,599 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:31:52,601 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:31:52,602 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:31:52,603 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:31:52,604 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:31:52,605 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:31:52,607 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:31:52,607 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:31:52,607 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:31:52,608 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:31:52,608 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:31:52,609 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:31:52,610 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:31:52,610 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:31:52,611 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:31:52,612 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:31:52,613 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:31:52,613 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:31:52,614 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:31:52,614 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:31:52,614 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:31:52,615 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:31:52,616 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:31:52,617 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 [2019-09-20 13:31:52,631 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:31:52,631 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:31:52,632 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:31:52,632 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:31:52,632 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:31:52,633 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:31:52,633 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:31:52,633 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:31:52,633 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:31:52,633 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:31:52,634 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:31:52,634 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:31:52,635 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:31:52,635 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:31:52,635 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:31:52,635 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:31:52,635 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:31:52,635 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:31:52,636 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:31:52,636 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:31:52,636 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:31:52,636 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:31:52,637 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:31:52,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:31:52,637 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:31:52,637 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:31:52,637 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:31:52,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:31:52,638 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:31:52,638 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:31:52,669 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:31:52,689 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:31:52,698 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:31:52,699 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:31:52,700 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:31:52,700 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/pc_sfifo_3.cil.c [2019-09-20 13:31:52,774 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1485ac7e/2509a01e272240e09435e9d0a8e6a6bf/FLAG0f726bf41 [2019-09-20 13:31:53,278 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:31:53,279 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/pc_sfifo_3.cil.c [2019-09-20 13:31:53,294 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1485ac7e/2509a01e272240e09435e9d0a8e6a6bf/FLAG0f726bf41 [2019-09-20 13:31:53,631 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1485ac7e/2509a01e272240e09435e9d0a8e6a6bf [2019-09-20 13:31:53,641 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:31:53,642 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:31:53,643 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:31:53,643 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:31:53,647 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:31:53,648 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:31:53" (1/1) ... [2019-09-20 13:31:53,651 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17e21c86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:53, skipping insertion in model container [2019-09-20 13:31:53,651 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:31:53" (1/1) ... [2019-09-20 13:31:53,659 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:31:53,704 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:31:53,943 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:31:53,960 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:31:54,089 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:31:54,117 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:31:54,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:54 WrapperNode [2019-09-20 13:31:54,117 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:31:54,118 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:31:54,118 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:31:54,118 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:31:54,129 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:54" (1/1) ... [2019-09-20 13:31:54,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:54" (1/1) ... [2019-09-20 13:31:54,138 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:54" (1/1) ... [2019-09-20 13:31:54,138 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:54" (1/1) ... [2019-09-20 13:31:54,150 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:54" (1/1) ... [2019-09-20 13:31:54,168 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:54" (1/1) ... [2019-09-20 13:31:54,173 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:54" (1/1) ... [2019-09-20 13:31:54,177 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:31:54,184 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:31:54,184 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:31:54,184 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:31:54,186 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:54" (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 [2019-09-20 13:31:54,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:31:54,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:31:54,250 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2019-09-20 13:31:54,251 INFO L138 BoogieDeclarations]: Found implementation of procedure update_fifo_q [2019-09-20 13:31:54,251 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2019-09-20 13:31:54,251 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2019-09-20 13:31:54,251 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2019-09-20 13:31:54,251 INFO L138 BoogieDeclarations]: Found implementation of procedure do_write_p [2019-09-20 13:31:54,251 INFO L138 BoogieDeclarations]: Found implementation of procedure do_read_c [2019-09-20 13:31:54,251 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2019-09-20 13:31:54,251 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2019-09-20 13:31:54,252 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2019-09-20 13:31:54,252 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2019-09-20 13:31:54,252 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2019-09-20 13:31:54,252 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2019-09-20 13:31:54,252 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2019-09-20 13:31:54,252 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2019-09-20 13:31:54,253 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2019-09-20 13:31:54,253 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2019-09-20 13:31:54,253 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2019-09-20 13:31:54,253 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2019-09-20 13:31:54,253 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:31:54,253 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:31:54,254 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:31:54,254 INFO L130 BoogieDeclarations]: Found specification of procedure error [2019-09-20 13:31:54,254 INFO L130 BoogieDeclarations]: Found specification of procedure update_fifo_q [2019-09-20 13:31:54,254 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2019-09-20 13:31:54,254 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2019-09-20 13:31:54,254 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2019-09-20 13:31:54,255 INFO L130 BoogieDeclarations]: Found specification of procedure do_write_p [2019-09-20 13:31:54,255 INFO L130 BoogieDeclarations]: Found specification of procedure do_read_c [2019-09-20 13:31:54,255 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2019-09-20 13:31:54,255 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2019-09-20 13:31:54,255 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2019-09-20 13:31:54,255 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2019-09-20 13:31:54,255 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2019-09-20 13:31:54,256 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2019-09-20 13:31:54,256 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2019-09-20 13:31:54,256 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2019-09-20 13:31:54,256 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2019-09-20 13:31:54,256 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2019-09-20 13:31:54,256 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2019-09-20 13:31:54,257 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2019-09-20 13:31:54,257 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:31:54,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:31:54,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:31:54,822 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; [2019-09-20 13:31:54,823 INFO L683 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !(1 == ~q_free~0); [2019-09-20 13:31:54,848 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:31:54,849 INFO L283 CfgBuilder]: Removed 4 assume(true) statements. [2019-09-20 13:31:54,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:31:54 BoogieIcfgContainer [2019-09-20 13:31:54,852 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:31:54,854 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:31:54,854 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:31:54,863 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:31:54,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:31:53" (1/3) ... [2019-09-20 13:31:54,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d7e510 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:31:54, skipping insertion in model container [2019-09-20 13:31:54,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:54" (2/3) ... [2019-09-20 13:31:54,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d7e510 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:31:54, skipping insertion in model container [2019-09-20 13:31:54,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:31:54" (3/3) ... [2019-09-20 13:31:54,869 INFO L109 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil.c [2019-09-20 13:31:54,880 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:31:54,894 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:31:54,913 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:31:54,959 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:31:54,960 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:31:54,960 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:31:54,961 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:31:54,961 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:31:54,961 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:31:54,961 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:31:54,961 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:31:54,993 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states. [2019-09-20 13:31:55,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-09-20 13:31:55,005 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:55,007 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] [2019-09-20 13:31:55,009 INFO L418 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:55,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:55,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1427944937, now seen corresponding path program 1 times [2019-09-20 13:31:55,016 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:55,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:55,065 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:55,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:55,065 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:55,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:55,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:31:55,401 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:55,402 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 13:31:55,402 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:55,407 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:31:55,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:31:55,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:31:55,427 INFO L87 Difference]: Start difference. First operand 156 states. Second operand 5 states. [2019-09-20 13:31:56,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:56,390 INFO L93 Difference]: Finished difference Result 312 states and 418 transitions. [2019-09-20 13:31:56,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:31:56,392 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2019-09-20 13:31:56,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:56,422 INFO L225 Difference]: With dead ends: 312 [2019-09-20 13:31:56,423 INFO L226 Difference]: Without dead ends: 296 [2019-09-20 13:31:56,426 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 [2019-09-20 13:31:56,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2019-09-20 13:31:56,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 271. [2019-09-20 13:31:56,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2019-09-20 13:31:56,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 363 transitions. [2019-09-20 13:31:56,528 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 363 transitions. Word has length 78 [2019-09-20 13:31:56,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:56,528 INFO L475 AbstractCegarLoop]: Abstraction has 271 states and 363 transitions. [2019-09-20 13:31:56,528 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:31:56,529 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 363 transitions. [2019-09-20 13:31:56,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-09-20 13:31:56,534 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:56,534 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] [2019-09-20 13:31:56,534 INFO L418 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:56,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:56,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1440144215, now seen corresponding path program 1 times [2019-09-20 13:31:56,535 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:56,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:56,537 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:56,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:56,537 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:56,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:56,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:31:56,654 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:56,654 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:31:56,654 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:56,660 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:31:56,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:31:56,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:31:56,662 INFO L87 Difference]: Start difference. First operand 271 states and 363 transitions. Second operand 6 states. [2019-09-20 13:31:57,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:57,738 INFO L93 Difference]: Finished difference Result 493 states and 688 transitions. [2019-09-20 13:31:57,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-20 13:31:57,739 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2019-09-20 13:31:57,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:57,745 INFO L225 Difference]: With dead ends: 493 [2019-09-20 13:31:57,746 INFO L226 Difference]: Without dead ends: 493 [2019-09-20 13:31:57,747 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 [2019-09-20 13:31:57,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2019-09-20 13:31:57,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 416. [2019-09-20 13:31:57,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2019-09-20 13:31:57,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 562 transitions. [2019-09-20 13:31:57,794 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 562 transitions. Word has length 78 [2019-09-20 13:31:57,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:57,794 INFO L475 AbstractCegarLoop]: Abstraction has 416 states and 562 transitions. [2019-09-20 13:31:57,794 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:31:57,794 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 562 transitions. [2019-09-20 13:31:57,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-09-20 13:31:57,799 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:57,799 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] [2019-09-20 13:31:57,800 INFO L418 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:57,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:57,800 INFO L82 PathProgramCache]: Analyzing trace with hash -53358805, now seen corresponding path program 1 times [2019-09-20 13:31:57,800 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:57,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:57,802 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:57,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:57,803 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:57,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:57,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:31:57,915 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:57,915 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:31:57,915 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:57,916 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:31:57,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:31:57,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:31:57,917 INFO L87 Difference]: Start difference. First operand 416 states and 562 transitions. Second operand 4 states. [2019-09-20 13:31:58,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:58,183 INFO L93 Difference]: Finished difference Result 774 states and 1022 transitions. [2019-09-20 13:31:58,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:31:58,184 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2019-09-20 13:31:58,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:58,192 INFO L225 Difference]: With dead ends: 774 [2019-09-20 13:31:58,193 INFO L226 Difference]: Without dead ends: 774 [2019-09-20 13:31:58,193 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 [2019-09-20 13:31:58,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2019-09-20 13:31:58,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 761. [2019-09-20 13:31:58,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 761 states. [2019-09-20 13:31:58,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 1010 transitions. [2019-09-20 13:31:58,243 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 1010 transitions. Word has length 78 [2019-09-20 13:31:58,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:58,243 INFO L475 AbstractCegarLoop]: Abstraction has 761 states and 1010 transitions. [2019-09-20 13:31:58,244 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:31:58,244 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 1010 transitions. [2019-09-20 13:31:58,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2019-09-20 13:31:58,248 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:58,249 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] [2019-09-20 13:31:58,249 INFO L418 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:58,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:58,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1828215755, now seen corresponding path program 1 times [2019-09-20 13:31:58,250 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:58,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:58,252 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:58,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:58,252 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:58,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:58,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:31:58,379 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:58,379 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:31:58,380 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:58,380 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:31:58,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:31:58,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:31:58,381 INFO L87 Difference]: Start difference. First operand 761 states and 1010 transitions. Second operand 6 states. [2019-09-20 13:31:58,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:58,421 INFO L93 Difference]: Finished difference Result 801 states and 1061 transitions. [2019-09-20 13:31:58,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:31:58,421 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2019-09-20 13:31:58,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:58,427 INFO L225 Difference]: With dead ends: 801 [2019-09-20 13:31:58,427 INFO L226 Difference]: Without dead ends: 801 [2019-09-20 13:31:58,428 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 [2019-09-20 13:31:58,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2019-09-20 13:31:58,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 781. [2019-09-20 13:31:58,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 781 states. [2019-09-20 13:31:58,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 781 states to 781 states and 1028 transitions. [2019-09-20 13:31:58,463 INFO L78 Accepts]: Start accepts. Automaton has 781 states and 1028 transitions. Word has length 79 [2019-09-20 13:31:58,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:58,464 INFO L475 AbstractCegarLoop]: Abstraction has 781 states and 1028 transitions. [2019-09-20 13:31:58,464 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:31:58,464 INFO L276 IsEmpty]: Start isEmpty. Operand 781 states and 1028 transitions. [2019-09-20 13:31:58,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2019-09-20 13:31:58,467 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:58,467 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] [2019-09-20 13:31:58,467 INFO L418 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:58,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:58,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1580069261, now seen corresponding path program 1 times [2019-09-20 13:31:58,468 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:58,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:58,470 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:58,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:58,470 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:58,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:58,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:31:58,552 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:58,552 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:31:58,552 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:58,553 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:31:58,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:31:58,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:31:58,554 INFO L87 Difference]: Start difference. First operand 781 states and 1028 transitions. Second operand 4 states. [2019-09-20 13:31:58,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:58,766 INFO L93 Difference]: Finished difference Result 1464 states and 1898 transitions. [2019-09-20 13:31:58,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:31:58,767 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 79 [2019-09-20 13:31:58,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:58,771 INFO L225 Difference]: With dead ends: 1464 [2019-09-20 13:31:58,772 INFO L226 Difference]: Without dead ends: 751 [2019-09-20 13:31:58,772 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 [2019-09-20 13:31:58,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2019-09-20 13:31:58,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 711. [2019-09-20 13:31:58,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 711 states. [2019-09-20 13:31:58,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 923 transitions. [2019-09-20 13:31:58,802 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 923 transitions. Word has length 79 [2019-09-20 13:31:58,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:58,803 INFO L475 AbstractCegarLoop]: Abstraction has 711 states and 923 transitions. [2019-09-20 13:31:58,803 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:31:58,803 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 923 transitions. [2019-09-20 13:31:58,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-09-20 13:31:58,805 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:58,806 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] [2019-09-20 13:31:58,806 INFO L418 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:58,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:58,807 INFO L82 PathProgramCache]: Analyzing trace with hash -1122686250, now seen corresponding path program 1 times [2019-09-20 13:31:58,807 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:58,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:58,809 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:58,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:58,809 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:58,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:58,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:31:58,870 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:58,871 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:31:58,871 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:58,871 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:31:58,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:31:58,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:31:58,872 INFO L87 Difference]: Start difference. First operand 711 states and 923 transitions. Second operand 6 states. [2019-09-20 13:31:58,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:58,903 INFO L93 Difference]: Finished difference Result 753 states and 974 transitions. [2019-09-20 13:31:58,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:31:58,904 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2019-09-20 13:31:58,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:58,909 INFO L225 Difference]: With dead ends: 753 [2019-09-20 13:31:58,909 INFO L226 Difference]: Without dead ends: 753 [2019-09-20 13:31:58,909 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 [2019-09-20 13:31:58,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2019-09-20 13:31:58,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 741. [2019-09-20 13:31:58,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 741 states. [2019-09-20 13:31:58,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 953 transitions. [2019-09-20 13:31:58,939 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 953 transitions. Word has length 80 [2019-09-20 13:31:58,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:58,940 INFO L475 AbstractCegarLoop]: Abstraction has 741 states and 953 transitions. [2019-09-20 13:31:58,940 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:31:58,940 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 953 transitions. [2019-09-20 13:31:58,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-09-20 13:31:58,942 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:58,942 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] [2019-09-20 13:31:58,942 INFO L418 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:58,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:58,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1195072808, now seen corresponding path program 1 times [2019-09-20 13:31:58,943 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:58,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:58,944 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:58,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:58,944 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:58,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:59,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:31:59,008 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:59,008 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:31:59,009 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:59,009 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:31:59,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:31:59,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:31:59,010 INFO L87 Difference]: Start difference. First operand 741 states and 953 transitions. Second operand 6 states. [2019-09-20 13:31:59,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:59,871 INFO L93 Difference]: Finished difference Result 897 states and 1168 transitions. [2019-09-20 13:31:59,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-20 13:31:59,872 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2019-09-20 13:31:59,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:59,879 INFO L225 Difference]: With dead ends: 897 [2019-09-20 13:31:59,879 INFO L226 Difference]: Without dead ends: 897 [2019-09-20 13:31:59,880 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 [2019-09-20 13:31:59,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2019-09-20 13:31:59,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 760. [2019-09-20 13:31:59,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 760 states. [2019-09-20 13:31:59,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 967 transitions. [2019-09-20 13:31:59,924 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 967 transitions. Word has length 80 [2019-09-20 13:31:59,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:59,925 INFO L475 AbstractCegarLoop]: Abstraction has 760 states and 967 transitions. [2019-09-20 13:31:59,925 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:31:59,925 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 967 transitions. [2019-09-20 13:31:59,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-09-20 13:31:59,927 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:59,927 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] [2019-09-20 13:31:59,927 INFO L418 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:59,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:59,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1704545898, now seen corresponding path program 1 times [2019-09-20 13:31:59,928 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:59,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:59,929 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:59,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:59,930 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:59,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:59,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:31:59,980 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:59,980 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:31:59,980 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:59,981 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:31:59,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:31:59,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:31:59,982 INFO L87 Difference]: Start difference. First operand 760 states and 967 transitions. Second operand 3 states. [2019-09-20 13:32:00,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:32:00,021 INFO L93 Difference]: Finished difference Result 1435 states and 1860 transitions. [2019-09-20 13:32:00,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:32:00,022 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2019-09-20 13:32:00,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:32:00,032 INFO L225 Difference]: With dead ends: 1435 [2019-09-20 13:32:00,032 INFO L226 Difference]: Without dead ends: 1435 [2019-09-20 13:32:00,033 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 [2019-09-20 13:32:00,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1435 states. [2019-09-20 13:32:00,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1435 to 1423. [2019-09-20 13:32:00,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1423 states. [2019-09-20 13:32:00,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1423 states to 1423 states and 1848 transitions. [2019-09-20 13:32:00,100 INFO L78 Accepts]: Start accepts. Automaton has 1423 states and 1848 transitions. Word has length 80 [2019-09-20 13:32:00,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:32:00,100 INFO L475 AbstractCegarLoop]: Abstraction has 1423 states and 1848 transitions. [2019-09-20 13:32:00,100 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:32:00,101 INFO L276 IsEmpty]: Start isEmpty. Operand 1423 states and 1848 transitions. [2019-09-20 13:32:00,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2019-09-20 13:32:00,105 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:32:00,105 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] [2019-09-20 13:32:00,105 INFO L418 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:32:00,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:32:00,106 INFO L82 PathProgramCache]: Analyzing trace with hash 683659270, now seen corresponding path program 1 times [2019-09-20 13:32:00,106 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:32:00,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:32:00,108 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:32:00,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:32:00,109 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:32:00,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:32:00,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:32:00,171 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:32:00,171 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:32:00,171 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:32:00,172 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:32:00,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:32:00,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:32:00,173 INFO L87 Difference]: Start difference. First operand 1423 states and 1848 transitions. Second operand 3 states. [2019-09-20 13:32:00,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:32:00,199 INFO L93 Difference]: Finished difference Result 1351 states and 1739 transitions. [2019-09-20 13:32:00,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:32:00,199 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2019-09-20 13:32:00,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:32:00,200 INFO L225 Difference]: With dead ends: 1351 [2019-09-20 13:32:00,201 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:32:00,201 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 [2019-09-20 13:32:00,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:32:00,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:32:00,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:32:00,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:32:00,202 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 81 [2019-09-20 13:32:00,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:32:00,202 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:32:00,202 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:32:00,203 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:32:00,203 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:32:00,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:32:00 BoogieIcfgContainer [2019-09-20 13:32:00,209 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:32:00,213 INFO L168 Benchmark]: Toolchain (without parser) took 6569.19 ms. Allocated memory was 129.0 MB in the beginning and 358.6 MB in the end (delta: 229.6 MB). Free memory was 84.2 MB in the beginning and 145.9 MB in the end (delta: -61.7 MB). Peak memory consumption was 168.0 MB. Max. memory is 7.1 GB. [2019-09-20 13:32:00,214 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 129.0 MB. Free memory was 103.0 MB in the beginning and 102.8 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:32:00,215 INFO L168 Benchmark]: CACSL2BoogieTranslator took 474.67 ms. Allocated memory was 129.0 MB in the beginning and 197.1 MB in the end (delta: 68.2 MB). Free memory was 84.0 MB in the beginning and 171.3 MB in the end (delta: -87.3 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. [2019-09-20 13:32:00,216 INFO L168 Benchmark]: Boogie Preprocessor took 59.08 ms. Allocated memory is still 197.1 MB. Free memory was 171.3 MB in the beginning and 168.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2019-09-20 13:32:00,217 INFO L168 Benchmark]: RCFGBuilder took 668.62 ms. Allocated memory is still 197.1 MB. Free memory was 168.6 MB in the beginning and 132.8 MB in the end (delta: 35.8 MB). Peak memory consumption was 35.8 MB. Max. memory is 7.1 GB. [2019-09-20 13:32:00,218 INFO L168 Benchmark]: TraceAbstraction took 5356.12 ms. Allocated memory was 197.1 MB in the beginning and 358.6 MB in the end (delta: 161.5 MB). Free memory was 132.8 MB in the beginning and 145.9 MB in the end (delta: -13.1 MB). Peak memory consumption was 148.4 MB. Max. memory is 7.1 GB. [2019-09-20 13:32:00,222 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 129.0 MB. Free memory was 103.0 MB in the beginning and 102.8 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 474.67 ms. Allocated memory was 129.0 MB in the beginning and 197.1 MB in the end (delta: 68.2 MB). Free memory was 84.0 MB in the beginning and 171.3 MB in the end (delta: -87.3 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 59.08 ms. Allocated memory is still 197.1 MB. Free memory was 171.3 MB in the beginning and 168.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 668.62 ms. Allocated memory is still 197.1 MB. Free memory was 168.6 MB in the beginning and 132.8 MB in the end (delta: 35.8 MB). Peak memory consumption was 35.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5356.12 ms. Allocated memory was 197.1 MB in the beginning and 358.6 MB in the end (delta: 161.5 MB). Free memory was 132.8 MB in the beginning and 145.9 MB in the end (delta: -13.1 MB). Peak memory consumption was 148.4 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, 5.2s OverallTime, 9 OverallIterations, 1 TraceHistogramMax, 3.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2054 SDtfs, 2196 SDslu, 2590 SDs, 0 SdLazy, 2171 SolverSat, 483 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 76 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s 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, 0.1s SatisfiabilityAnalysisTime, 0.6s 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...