/usr/bin/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/systemc/transmitter.05.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:52:31,603 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:52:31,606 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:52:31,621 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:52:31,621 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:52:31,622 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:52:31,624 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:52:31,625 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:52:31,627 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:52:31,628 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:52:31,629 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:52:31,630 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:52:31,631 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:52:31,632 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:52:31,633 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:52:31,634 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:52:31,635 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:52:31,635 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:52:31,637 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:52:31,639 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:52:31,640 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:52:31,641 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:52:31,642 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:52:31,643 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:52:31,645 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 04:52:31,645 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 04:52:31,646 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 04:52:31,646 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 04:52:31,647 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 04:52:31,648 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 04:52:31,648 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:52:31,649 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:52:31,650 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:52:31,650 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:52:31,651 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:52:31,652 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:52:31,652 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:52:31,653 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:52:31,653 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:52:31,654 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:52:31,655 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:52:31,656 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-07 04:52:31,671 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:52:31,672 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:52:31,673 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:52:31,673 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:52:31,673 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:52:31,674 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:52:31,674 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:52:31,674 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:52:31,674 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:52:31,674 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:52:31,675 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:52:31,675 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:52:31,675 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:52:31,675 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:52:31,675 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:52:31,675 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:52:31,677 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:52:31,677 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:52:31,677 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:52:31,677 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:52:31,677 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:52:31,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:52:31,678 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:52:31,678 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:52:31,678 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:52:31,678 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:52:31,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:52:31,679 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:52:31,679 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-11-07 04:52:31,975 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:52:31,988 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:52:31,992 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:52:31,993 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:52:31,994 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:52:31,994 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/transmitter.05.cil.c [2019-11-07 04:52:32,054 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39ce17c40/78884facfacf46be991d166bd654db55/FLAG5acafbe38 [2019-11-07 04:52:32,518 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:52:32,519 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/transmitter.05.cil.c [2019-11-07 04:52:32,539 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39ce17c40/78884facfacf46be991d166bd654db55/FLAG5acafbe38 [2019-11-07 04:52:32,830 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39ce17c40/78884facfacf46be991d166bd654db55 [2019-11-07 04:52:32,843 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:52:32,847 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:52:32,849 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:52:32,849 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:52:32,853 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:52:32,854 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:52:32" (1/1) ... [2019-11-07 04:52:32,857 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29fdf1d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:52:32, skipping insertion in model container [2019-11-07 04:52:32,858 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:52:32" (1/1) ... [2019-11-07 04:52:32,867 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:52:32,927 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:52:33,209 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:52:33,220 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:52:33,378 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:52:33,410 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:52:33,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:52:33 WrapperNode [2019-11-07 04:52:33,411 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:52:33,411 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:52:33,411 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:52:33,412 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:52:33,424 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:52:33" (1/1) ... [2019-11-07 04:52:33,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:52:33" (1/1) ... [2019-11-07 04:52:33,436 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:52:33" (1/1) ... [2019-11-07 04:52:33,436 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:52:33" (1/1) ... [2019-11-07 04:52:33,467 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:52:33" (1/1) ... [2019-11-07 04:52:33,490 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:52:33" (1/1) ... [2019-11-07 04:52:33,493 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:52:33" (1/1) ... [2019-11-07 04:52:33,498 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:52:33,506 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:52:33,506 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:52:33,506 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:52:33,507 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:52:33" (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 [2019-11-07 04:52:33,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:52:33,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:52:33,561 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2019-11-07 04:52:33,561 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2019-11-07 04:52:33,561 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2019-11-07 04:52:33,562 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit2 [2019-11-07 04:52:33,563 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit3 [2019-11-07 04:52:33,563 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit4 [2019-11-07 04:52:33,564 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit5 [2019-11-07 04:52:33,564 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2019-11-07 04:52:33,564 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2019-11-07 04:52:33,564 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit2_triggered [2019-11-07 04:52:33,565 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit3_triggered [2019-11-07 04:52:33,565 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit4_triggered [2019-11-07 04:52:33,565 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit5_triggered [2019-11-07 04:52:33,565 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2019-11-07 04:52:33,567 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2019-11-07 04:52:33,567 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2019-11-07 04:52:33,567 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2019-11-07 04:52:33,567 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2019-11-07 04:52:33,567 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2019-11-07 04:52:33,568 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2019-11-07 04:52:33,568 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2019-11-07 04:52:33,568 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2019-11-07 04:52:33,568 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2019-11-07 04:52:33,568 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2019-11-07 04:52:33,569 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2019-11-07 04:52:33,569 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2019-11-07 04:52:33,569 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:52:33,569 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:52:33,569 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:52:33,569 INFO L130 BoogieDeclarations]: Found specification of procedure error [2019-11-07 04:52:33,570 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2019-11-07 04:52:33,570 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2019-11-07 04:52:33,570 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit2_triggered [2019-11-07 04:52:33,570 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit3_triggered [2019-11-07 04:52:33,570 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit4_triggered [2019-11-07 04:52:33,570 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit5_triggered [2019-11-07 04:52:33,570 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2019-11-07 04:52:33,570 INFO L130 BoogieDeclarations]: Found specification of procedure master [2019-11-07 04:52:33,571 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2019-11-07 04:52:33,571 INFO L130 BoogieDeclarations]: Found specification of procedure transmit2 [2019-11-07 04:52:33,571 INFO L130 BoogieDeclarations]: Found specification of procedure transmit3 [2019-11-07 04:52:33,571 INFO L130 BoogieDeclarations]: Found specification of procedure transmit4 [2019-11-07 04:52:33,571 INFO L130 BoogieDeclarations]: Found specification of procedure transmit5 [2019-11-07 04:52:33,571 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2019-11-07 04:52:33,571 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2019-11-07 04:52:33,571 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2019-11-07 04:52:33,571 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2019-11-07 04:52:33,572 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2019-11-07 04:52:33,572 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2019-11-07 04:52:33,572 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2019-11-07 04:52:33,572 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2019-11-07 04:52:33,572 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2019-11-07 04:52:33,572 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2019-11-07 04:52:33,572 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2019-11-07 04:52:33,573 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2019-11-07 04:52:33,573 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:52:33,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:52:33,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:52:34,957 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:52:34,958 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-07 04:52:34,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:52:34 BoogieIcfgContainer [2019-11-07 04:52:34,960 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:52:34,961 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:52:34,961 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:52:34,964 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:52:34,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:52:32" (1/3) ... [2019-11-07 04:52:34,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15292cbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:52:34, skipping insertion in model container [2019-11-07 04:52:34,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:52:33" (2/3) ... [2019-11-07 04:52:34,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15292cbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:52:34, skipping insertion in model container [2019-11-07 04:52:34,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:52:34" (3/3) ... [2019-11-07 04:52:34,968 INFO L109 eAbstractionObserver]: Analyzing ICFG transmitter.05.cil.c [2019-11-07 04:52:34,978 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:52:34,987 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:52:34,999 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:52:35,031 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:52:35,032 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:52:35,032 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:52:35,032 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:52:35,032 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:52:35,033 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:52:35,033 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:52:35,033 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:52:35,074 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states. [2019-11-07 04:52:35,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-11-07 04:52:35,088 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:52:35,089 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:52:35,090 INFO L410 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:52:35,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:52:35,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1812036435, now seen corresponding path program 1 times [2019-11-07 04:52:35,104 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:52:35,104 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247315047] [2019-11-07 04:52:35,104 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:52:35,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:52:35,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:52:35,530 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247315047] [2019-11-07 04:52:35,532 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:52:35,532 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 04:52:35,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146918060] [2019-11-07 04:52:35,543 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:52:35,543 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:52:35,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:52:35,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:52:35,563 INFO L87 Difference]: Start difference. First operand 174 states. Second operand 4 states. [2019-11-07 04:52:36,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:52:36,107 INFO L93 Difference]: Finished difference Result 481 states and 669 transitions. [2019-11-07 04:52:36,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 04:52:36,109 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2019-11-07 04:52:36,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:52:36,138 INFO L225 Difference]: With dead ends: 481 [2019-11-07 04:52:36,138 INFO L226 Difference]: Without dead ends: 311 [2019-11-07 04:52:36,152 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:52:36,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2019-11-07 04:52:36,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 307. [2019-11-07 04:52:36,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2019-11-07 04:52:36,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 397 transitions. [2019-11-07 04:52:36,318 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 397 transitions. Word has length 88 [2019-11-07 04:52:36,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:52:36,319 INFO L462 AbstractCegarLoop]: Abstraction has 307 states and 397 transitions. [2019-11-07 04:52:36,320 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:52:36,321 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 397 transitions. [2019-11-07 04:52:36,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-11-07 04:52:36,328 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:52:36,330 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:52:36,330 INFO L410 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:52:36,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:52:36,331 INFO L82 PathProgramCache]: Analyzing trace with hash -2105288044, now seen corresponding path program 1 times [2019-11-07 04:52:36,331 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:52:36,332 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668646469] [2019-11-07 04:52:36,332 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:52:36,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:52:36,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:52:36,525 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668646469] [2019-11-07 04:52:36,529 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:52:36,529 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 04:52:36,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605129281] [2019-11-07 04:52:36,534 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:52:36,535 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:52:36,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:52:36,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:52:36,536 INFO L87 Difference]: Start difference. First operand 307 states and 397 transitions. Second operand 4 states. [2019-11-07 04:52:36,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:52:36,891 INFO L93 Difference]: Finished difference Result 880 states and 1201 transitions. [2019-11-07 04:52:36,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 04:52:36,893 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2019-11-07 04:52:36,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:52:36,904 INFO L225 Difference]: With dead ends: 880 [2019-11-07 04:52:36,905 INFO L226 Difference]: Without dead ends: 589 [2019-11-07 04:52:36,907 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:52:36,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2019-11-07 04:52:36,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 584. [2019-11-07 04:52:36,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 584 states. [2019-11-07 04:52:36,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 752 transitions. [2019-11-07 04:52:36,978 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 752 transitions. Word has length 88 [2019-11-07 04:52:36,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:52:36,979 INFO L462 AbstractCegarLoop]: Abstraction has 584 states and 752 transitions. [2019-11-07 04:52:36,979 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:52:36,979 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 752 transitions. [2019-11-07 04:52:36,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-11-07 04:52:36,981 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:52:36,982 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:52:36,982 INFO L410 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:52:36,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:52:36,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1048031859, now seen corresponding path program 1 times [2019-11-07 04:52:36,983 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:52:36,983 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365652304] [2019-11-07 04:52:36,983 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:52:37,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:52:37,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:52:37,107 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365652304] [2019-11-07 04:52:37,108 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:52:37,108 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 04:52:37,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710262107] [2019-11-07 04:52:37,109 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:52:37,109 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:52:37,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:52:37,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:52:37,110 INFO L87 Difference]: Start difference. First operand 584 states and 752 transitions. Second operand 4 states. [2019-11-07 04:52:37,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:52:37,496 INFO L93 Difference]: Finished difference Result 1703 states and 2316 transitions. [2019-11-07 04:52:37,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 04:52:37,497 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2019-11-07 04:52:37,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:52:37,507 INFO L225 Difference]: With dead ends: 1703 [2019-11-07 04:52:37,507 INFO L226 Difference]: Without dead ends: 1135 [2019-11-07 04:52:37,511 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:52:37,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1135 states. [2019-11-07 04:52:37,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1135 to 1128. [2019-11-07 04:52:37,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1128 states. [2019-11-07 04:52:37,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1128 states to 1128 states and 1446 transitions. [2019-11-07 04:52:37,639 INFO L78 Accepts]: Start accepts. Automaton has 1128 states and 1446 transitions. Word has length 88 [2019-11-07 04:52:37,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:52:37,640 INFO L462 AbstractCegarLoop]: Abstraction has 1128 states and 1446 transitions. [2019-11-07 04:52:37,640 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:52:37,640 INFO L276 IsEmpty]: Start isEmpty. Operand 1128 states and 1446 transitions. [2019-11-07 04:52:37,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-11-07 04:52:37,649 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:52:37,649 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:52:37,649 INFO L410 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:52:37,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:52:37,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1052809356, now seen corresponding path program 1 times [2019-11-07 04:52:37,651 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:52:37,651 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020576373] [2019-11-07 04:52:37,651 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:52:37,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:52:37,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:52:37,817 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020576373] [2019-11-07 04:52:37,817 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:52:37,817 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 04:52:37,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867841609] [2019-11-07 04:52:37,818 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:52:37,818 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:52:37,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:52:37,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:52:37,819 INFO L87 Difference]: Start difference. First operand 1128 states and 1446 transitions. Second operand 4 states. [2019-11-07 04:52:38,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:52:38,271 INFO L93 Difference]: Finished difference Result 3319 states and 4508 transitions. [2019-11-07 04:52:38,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 04:52:38,272 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2019-11-07 04:52:38,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:52:38,289 INFO L225 Difference]: With dead ends: 3319 [2019-11-07 04:52:38,290 INFO L226 Difference]: Without dead ends: 2207 [2019-11-07 04:52:38,297 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:52:38,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2207 states. [2019-11-07 04:52:38,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2207 to 2196. [2019-11-07 04:52:38,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2196 states. [2019-11-07 04:52:38,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2196 states to 2196 states and 2808 transitions. [2019-11-07 04:52:38,451 INFO L78 Accepts]: Start accepts. Automaton has 2196 states and 2808 transitions. Word has length 88 [2019-11-07 04:52:38,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:52:38,452 INFO L462 AbstractCegarLoop]: Abstraction has 2196 states and 2808 transitions. [2019-11-07 04:52:38,452 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:52:38,453 INFO L276 IsEmpty]: Start isEmpty. Operand 2196 states and 2808 transitions. [2019-11-07 04:52:38,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-11-07 04:52:38,460 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:52:38,460 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:52:38,460 INFO L410 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:52:38,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:52:38,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1967055251, now seen corresponding path program 1 times [2019-11-07 04:52:38,461 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:52:38,462 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649825610] [2019-11-07 04:52:38,462 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:52:38,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:52:38,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:52:38,564 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649825610] [2019-11-07 04:52:38,564 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:52:38,564 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:52:38,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688326086] [2019-11-07 04:52:38,565 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:52:38,565 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:52:38,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:52:38,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:52:38,567 INFO L87 Difference]: Start difference. First operand 2196 states and 2808 transitions. Second operand 3 states. [2019-11-07 04:52:38,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:52:38,920 INFO L93 Difference]: Finished difference Result 6504 states and 8979 transitions. [2019-11-07 04:52:38,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:52:38,921 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 88 [2019-11-07 04:52:38,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:52:38,954 INFO L225 Difference]: With dead ends: 6504 [2019-11-07 04:52:38,955 INFO L226 Difference]: Without dead ends: 4324 [2019-11-07 04:52:38,971 INFO L630 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 [2019-11-07 04:52:38,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4324 states. [2019-11-07 04:52:39,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4324 to 4324. [2019-11-07 04:52:39,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4324 states. [2019-11-07 04:52:39,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4324 states to 4324 states and 5835 transitions. [2019-11-07 04:52:39,373 INFO L78 Accepts]: Start accepts. Automaton has 4324 states and 5835 transitions. Word has length 88 [2019-11-07 04:52:39,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:52:39,374 INFO L462 AbstractCegarLoop]: Abstraction has 4324 states and 5835 transitions. [2019-11-07 04:52:39,375 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:52:39,375 INFO L276 IsEmpty]: Start isEmpty. Operand 4324 states and 5835 transitions. [2019-11-07 04:52:39,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-11-07 04:52:39,379 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:52:39,379 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:52:39,380 INFO L410 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:52:39,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:52:39,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1325517121, now seen corresponding path program 1 times [2019-11-07 04:52:39,381 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:52:39,381 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128005340] [2019-11-07 04:52:39,381 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:52:39,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:52:39,472 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-07 04:52:39,473 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128005340] [2019-11-07 04:52:39,473 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:52:39,473 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 04:52:39,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089543017] [2019-11-07 04:52:39,474 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:52:39,474 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:52:39,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:52:39,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:52:39,475 INFO L87 Difference]: Start difference. First operand 4324 states and 5835 transitions. Second operand 4 states. [2019-11-07 04:52:40,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:52:40,207 INFO L93 Difference]: Finished difference Result 13527 states and 18987 transitions. [2019-11-07 04:52:40,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 04:52:40,208 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2019-11-07 04:52:40,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:52:40,290 INFO L225 Difference]: With dead ends: 13527 [2019-11-07 04:52:40,290 INFO L226 Difference]: Without dead ends: 9220 [2019-11-07 04:52:40,329 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:52:40,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9220 states. [2019-11-07 04:52:41,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9220 to 7022. [2019-11-07 04:52:41,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7022 states. [2019-11-07 04:52:41,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7022 states to 7022 states and 9784 transitions. [2019-11-07 04:52:41,174 INFO L78 Accepts]: Start accepts. Automaton has 7022 states and 9784 transitions. Word has length 105 [2019-11-07 04:52:41,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:52:41,177 INFO L462 AbstractCegarLoop]: Abstraction has 7022 states and 9784 transitions. [2019-11-07 04:52:41,178 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:52:41,178 INFO L276 IsEmpty]: Start isEmpty. Operand 7022 states and 9784 transitions. [2019-11-07 04:52:41,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2019-11-07 04:52:41,202 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:52:41,203 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:52:41,203 INFO L410 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:52:41,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:52:41,204 INFO L82 PathProgramCache]: Analyzing trace with hash 588539568, now seen corresponding path program 1 times [2019-11-07 04:52:41,204 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:52:41,204 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239974979] [2019-11-07 04:52:41,205 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:52:41,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:52:41,333 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-11-07 04:52:41,334 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239974979] [2019-11-07 04:52:41,334 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:52:41,334 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:52:41,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415133602] [2019-11-07 04:52:41,335 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:52:41,335 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:52:41,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:52:41,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:52:41,336 INFO L87 Difference]: Start difference. First operand 7022 states and 9784 transitions. Second operand 3 states. [2019-11-07 04:52:42,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:52:42,075 INFO L93 Difference]: Finished difference Result 19205 states and 27385 transitions. [2019-11-07 04:52:42,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:52:42,076 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 160 [2019-11-07 04:52:42,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:52:42,169 INFO L225 Difference]: With dead ends: 19205 [2019-11-07 04:52:42,169 INFO L226 Difference]: Without dead ends: 12200 [2019-11-07 04:52:42,233 INFO L630 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 [2019-11-07 04:52:42,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12200 states. [2019-11-07 04:52:43,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12200 to 9310. [2019-11-07 04:52:43,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9310 states. [2019-11-07 04:52:43,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9310 states to 9310 states and 13043 transitions. [2019-11-07 04:52:43,082 INFO L78 Accepts]: Start accepts. Automaton has 9310 states and 13043 transitions. Word has length 160 [2019-11-07 04:52:43,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:52:43,083 INFO L462 AbstractCegarLoop]: Abstraction has 9310 states and 13043 transitions. [2019-11-07 04:52:43,083 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:52:43,083 INFO L276 IsEmpty]: Start isEmpty. Operand 9310 states and 13043 transitions. [2019-11-07 04:52:43,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-11-07 04:52:43,102 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:52:43,102 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:52:43,102 INFO L410 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:52:43,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:52:43,103 INFO L82 PathProgramCache]: Analyzing trace with hash -2106392766, now seen corresponding path program 1 times [2019-11-07 04:52:43,103 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:52:43,103 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661611353] [2019-11-07 04:52:43,103 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:52:43,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:52:43,209 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-11-07 04:52:43,210 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661611353] [2019-11-07 04:52:43,210 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100775290] [2019-11-07 04:52:43,210 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:52:43,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:52:43,404 INFO L256 TraceCheckSpWp]: Trace formula consists of 1076 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-07 04:52:43,422 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:52:44,098 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:52:44,099 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:52:44,389 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-11-07 04:52:44,390 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 04:52:44,390 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [6] total 7 [2019-11-07 04:52:44,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109382707] [2019-11-07 04:52:44,392 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:52:44,392 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:52:44,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:52:44,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:52:44,393 INFO L87 Difference]: Start difference. First operand 9310 states and 13043 transitions. Second operand 4 states. [2019-11-07 04:52:45,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:52:45,906 INFO L93 Difference]: Finished difference Result 27634 states and 41625 transitions. [2019-11-07 04:52:45,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 04:52:45,907 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 161 [2019-11-07 04:52:45,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:52:46,023 INFO L225 Difference]: With dead ends: 27634 [2019-11-07 04:52:46,023 INFO L226 Difference]: Without dead ends: 18340 [2019-11-07 04:52:46,115 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:52:46,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18340 states. [2019-11-07 04:52:47,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18340 to 18191. [2019-11-07 04:52:47,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18191 states. [2019-11-07 04:52:47,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18191 states to 18191 states and 25553 transitions. [2019-11-07 04:52:47,584 INFO L78 Accepts]: Start accepts. Automaton has 18191 states and 25553 transitions. Word has length 161 [2019-11-07 04:52:47,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:52:47,586 INFO L462 AbstractCegarLoop]: Abstraction has 18191 states and 25553 transitions. [2019-11-07 04:52:47,586 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:52:47,586 INFO L276 IsEmpty]: Start isEmpty. Operand 18191 states and 25553 transitions. [2019-11-07 04:52:47,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2019-11-07 04:52:47,621 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:52:47,621 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:52:47,835 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:52:47,836 INFO L410 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:52:47,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:52:47,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1392794045, now seen corresponding path program 1 times [2019-11-07 04:52:47,837 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:52:47,838 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207490069] [2019-11-07 04:52:47,839 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:52:47,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:52:47,995 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-11-07 04:52:47,996 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207490069] [2019-11-07 04:52:47,996 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562262924] [2019-11-07 04:52:47,996 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:52:48,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:52:48,224 INFO L256 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-07 04:52:48,237 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:52:48,312 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:52:48,313 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:52:48,540 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-11-07 04:52:48,541 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 04:52:48,541 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 3] total 6 [2019-11-07 04:52:48,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343284998] [2019-11-07 04:52:48,542 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:52:48,543 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:52:48,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:52:48,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-07 04:52:48,545 INFO L87 Difference]: Start difference. First operand 18191 states and 25553 transitions. Second operand 3 states. [2019-11-07 04:52:50,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:52:50,703 INFO L93 Difference]: Finished difference Result 33850 states and 49015 transitions. [2019-11-07 04:52:50,703 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:52:50,704 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 165 [2019-11-07 04:52:50,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:52:50,870 INFO L225 Difference]: With dead ends: 33850 [2019-11-07 04:52:50,870 INFO L226 Difference]: Without dead ends: 24967 [2019-11-07 04:52:50,993 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-07 04:52:51,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24967 states. [2019-11-07 04:52:52,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24967 to 22495. [2019-11-07 04:52:52,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22495 states. [2019-11-07 04:52:53,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22495 states to 22495 states and 31653 transitions. [2019-11-07 04:52:53,019 INFO L78 Accepts]: Start accepts. Automaton has 22495 states and 31653 transitions. Word has length 165 [2019-11-07 04:52:53,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:52:53,020 INFO L462 AbstractCegarLoop]: Abstraction has 22495 states and 31653 transitions. [2019-11-07 04:52:53,020 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:52:53,020 INFO L276 IsEmpty]: Start isEmpty. Operand 22495 states and 31653 transitions. [2019-11-07 04:52:53,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-11-07 04:52:53,049 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:52:53,050 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:52:53,255 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:52:53,255 INFO L410 AbstractCegarLoop]: === Iteration 10 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:52:53,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:52:53,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1514414118, now seen corresponding path program 1 times [2019-11-07 04:52:53,256 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:52:53,256 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946515117] [2019-11-07 04:52:53,257 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:52:53,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:52:53,395 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-11-07 04:52:53,401 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946515117] [2019-11-07 04:52:53,402 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:52:53,402 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:52:53,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980330831] [2019-11-07 04:52:53,403 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:52:53,404 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:52:53,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:52:53,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:52:53,405 INFO L87 Difference]: Start difference. First operand 22495 states and 31653 transitions. Second operand 3 states. [2019-11-07 04:52:56,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:52:56,317 INFO L93 Difference]: Finished difference Result 59820 states and 87588 transitions. [2019-11-07 04:52:56,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:52:56,318 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 161 [2019-11-07 04:52:56,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:52:56,516 INFO L225 Difference]: With dead ends: 59820 [2019-11-07 04:52:56,516 INFO L226 Difference]: Without dead ends: 37342 [2019-11-07 04:52:56,738 INFO L630 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 [2019-11-07 04:52:56,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37342 states. [2019-11-07 04:52:58,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37342 to 34551. [2019-11-07 04:52:58,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34551 states. [2019-11-07 04:52:58,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34551 states to 34551 states and 48759 transitions. [2019-11-07 04:52:58,997 INFO L78 Accepts]: Start accepts. Automaton has 34551 states and 48759 transitions. Word has length 161 [2019-11-07 04:52:58,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:52:58,999 INFO L462 AbstractCegarLoop]: Abstraction has 34551 states and 48759 transitions. [2019-11-07 04:52:58,999 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:52:58,999 INFO L276 IsEmpty]: Start isEmpty. Operand 34551 states and 48759 transitions. [2019-11-07 04:52:59,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-11-07 04:52:59,031 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:52:59,031 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:52:59,031 INFO L410 AbstractCegarLoop]: === Iteration 11 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:52:59,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:52:59,032 INFO L82 PathProgramCache]: Analyzing trace with hash -31282744, now seen corresponding path program 1 times [2019-11-07 04:52:59,032 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:52:59,032 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835852291] [2019-11-07 04:52:59,032 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:52:59,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:52:59,154 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2019-11-07 04:52:59,155 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835852291] [2019-11-07 04:52:59,155 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:52:59,155 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 04:52:59,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350497913] [2019-11-07 04:52:59,156 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:52:59,156 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:52:59,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:52:59,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:52:59,157 INFO L87 Difference]: Start difference. First operand 34551 states and 48759 transitions. Second operand 4 states.