/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.06.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:52:34,032 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:52:34,035 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:52:34,055 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:52:34,056 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:52:34,057 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:52:34,059 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:52:34,069 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:52:34,074 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:52:34,075 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:52:34,076 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:52:34,077 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:52:34,077 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:52:34,078 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:52:34,080 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:52:34,081 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:52:34,082 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:52:34,082 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:52:34,087 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:52:34,089 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:52:34,092 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:52:34,093 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:52:34,095 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:52:34,096 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:52:34,100 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 04:52:34,100 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 04:52:34,101 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 04:52:34,102 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 04:52:34,103 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 04:52:34,104 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 04:52:34,104 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:52:34,105 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:52:34,106 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:52:34,106 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:52:34,107 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:52:34,108 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:52:34,108 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:52:34,109 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:52:34,109 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:52:34,109 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:52:34,110 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:52:34,111 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 04:52:34,127 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:52:34,127 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:52:34,128 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:52:34,129 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:52:34,129 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:52:34,129 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:52:34,129 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:52:34,129 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:52:34,130 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:52:34,130 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:52:34,130 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:52:34,130 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:52:34,130 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:52:34,130 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:52:34,131 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:52:34,131 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:52:34,131 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:52:34,131 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:52:34,131 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:52:34,132 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:52:34,132 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:52:34,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:52:34,132 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:52:34,132 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:52:34,133 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:52:34,133 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:52:34,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:52:34,133 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:52:34,133 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 04:52:34,413 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:52:34,425 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:52:34,429 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:52:34,430 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:52:34,431 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:52:34,432 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/transmitter.06.cil.c [2019-11-07 04:52:34,508 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/858082bb1/484aad7aa6e548a8957948b52d3ef8d4/FLAG978df5fea [2019-11-07 04:52:34,998 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:52:34,999 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/transmitter.06.cil.c [2019-11-07 04:52:35,012 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/858082bb1/484aad7aa6e548a8957948b52d3ef8d4/FLAG978df5fea [2019-11-07 04:52:35,314 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/858082bb1/484aad7aa6e548a8957948b52d3ef8d4 [2019-11-07 04:52:35,339 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:52:35,345 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:52:35,348 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:52:35,348 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:52:35,358 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:52:35,362 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:52:35" (1/1) ... [2019-11-07 04:52:35,365 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45c3761e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:52:35, skipping insertion in model container [2019-11-07 04:52:35,368 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:52:35" (1/1) ... [2019-11-07 04:52:35,386 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:52:35,501 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:52:35,797 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:52:35,816 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:52:35,980 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:52:36,001 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:52:36,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:52:36 WrapperNode [2019-11-07 04:52:36,002 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:52:36,002 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:52:36,002 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:52:36,003 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:52:36,013 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:52:36" (1/1) ... [2019-11-07 04:52:36,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:52:36" (1/1) ... [2019-11-07 04:52:36,023 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:52:36" (1/1) ... [2019-11-07 04:52:36,024 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:52:36" (1/1) ... [2019-11-07 04:52:36,038 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:52:36" (1/1) ... [2019-11-07 04:52:36,056 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:52:36" (1/1) ... [2019-11-07 04:52:36,062 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:52:36" (1/1) ... [2019-11-07 04:52:36,069 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:52:36,075 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:52:36,075 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:52:36,075 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:52:36,076 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:52:36" (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 04:52:36,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:52:36,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:52:36,138 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2019-11-07 04:52:36,138 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2019-11-07 04:52:36,138 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2019-11-07 04:52:36,138 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit2 [2019-11-07 04:52:36,138 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit3 [2019-11-07 04:52:36,139 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit4 [2019-11-07 04:52:36,139 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit5 [2019-11-07 04:52:36,139 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit6 [2019-11-07 04:52:36,139 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2019-11-07 04:52:36,139 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2019-11-07 04:52:36,139 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit2_triggered [2019-11-07 04:52:36,140 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit3_triggered [2019-11-07 04:52:36,140 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit4_triggered [2019-11-07 04:52:36,140 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit5_triggered [2019-11-07 04:52:36,140 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit6_triggered [2019-11-07 04:52:36,140 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2019-11-07 04:52:36,140 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2019-11-07 04:52:36,141 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2019-11-07 04:52:36,141 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2019-11-07 04:52:36,141 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2019-11-07 04:52:36,141 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2019-11-07 04:52:36,141 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2019-11-07 04:52:36,141 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2019-11-07 04:52:36,142 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2019-11-07 04:52:36,142 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2019-11-07 04:52:36,142 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2019-11-07 04:52:36,142 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2019-11-07 04:52:36,142 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2019-11-07 04:52:36,142 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:52:36,142 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:52:36,143 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:52:36,143 INFO L130 BoogieDeclarations]: Found specification of procedure error [2019-11-07 04:52:36,143 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2019-11-07 04:52:36,143 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2019-11-07 04:52:36,143 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit2_triggered [2019-11-07 04:52:36,143 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit3_triggered [2019-11-07 04:52:36,144 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit4_triggered [2019-11-07 04:52:36,144 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit5_triggered [2019-11-07 04:52:36,144 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit6_triggered [2019-11-07 04:52:36,144 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2019-11-07 04:52:36,144 INFO L130 BoogieDeclarations]: Found specification of procedure master [2019-11-07 04:52:36,144 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2019-11-07 04:52:36,144 INFO L130 BoogieDeclarations]: Found specification of procedure transmit2 [2019-11-07 04:52:36,145 INFO L130 BoogieDeclarations]: Found specification of procedure transmit3 [2019-11-07 04:52:36,145 INFO L130 BoogieDeclarations]: Found specification of procedure transmit4 [2019-11-07 04:52:36,145 INFO L130 BoogieDeclarations]: Found specification of procedure transmit5 [2019-11-07 04:52:36,145 INFO L130 BoogieDeclarations]: Found specification of procedure transmit6 [2019-11-07 04:52:36,145 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2019-11-07 04:52:36,145 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2019-11-07 04:52:36,146 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2019-11-07 04:52:36,146 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2019-11-07 04:52:36,146 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2019-11-07 04:52:36,146 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2019-11-07 04:52:36,146 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2019-11-07 04:52:36,146 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2019-11-07 04:52:36,147 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2019-11-07 04:52:36,147 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2019-11-07 04:52:36,149 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2019-11-07 04:52:36,149 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2019-11-07 04:52:36,150 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:52:36,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:52:36,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:52:37,652 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:52:37,652 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-07 04:52:37,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:52:37 BoogieIcfgContainer [2019-11-07 04:52:37,654 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:52:37,655 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:52:37,655 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:52:37,658 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:52:37,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:52:35" (1/3) ... [2019-11-07 04:52:37,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ecf9c21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:52:37, skipping insertion in model container [2019-11-07 04:52:37,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:52:36" (2/3) ... [2019-11-07 04:52:37,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ecf9c21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:52:37, skipping insertion in model container [2019-11-07 04:52:37,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:52:37" (3/3) ... [2019-11-07 04:52:37,662 INFO L109 eAbstractionObserver]: Analyzing ICFG transmitter.06.cil.c [2019-11-07 04:52:37,673 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:52:37,681 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:52:37,693 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:52:37,730 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:52:37,730 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:52:37,730 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:52:37,730 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:52:37,731 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:52:37,731 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:52:37,731 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:52:37,731 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:52:37,767 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states. [2019-11-07 04:52:37,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-11-07 04:52:37,779 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:52:37,780 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:52:37,782 INFO L410 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:52:37,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:52:37,788 INFO L82 PathProgramCache]: Analyzing trace with hash -767649143, now seen corresponding path program 1 times [2019-11-07 04:52:37,798 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:52:37,799 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770417121] [2019-11-07 04:52:37,799 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:52:37,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:52:38,196 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 04:52:38,197 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770417121] [2019-11-07 04:52:38,198 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:52:38,198 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 04:52:38,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204806668] [2019-11-07 04:52:38,208 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:52:38,209 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:52:38,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:52:38,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:52:38,227 INFO L87 Difference]: Start difference. First operand 191 states. Second operand 4 states. [2019-11-07 04:52:38,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:52:38,801 INFO L93 Difference]: Finished difference Result 532 states and 745 transitions. [2019-11-07 04:52:38,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 04:52:38,803 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 96 [2019-11-07 04:52:38,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:52:38,836 INFO L225 Difference]: With dead ends: 532 [2019-11-07 04:52:38,836 INFO L226 Difference]: Without dead ends: 345 [2019-11-07 04:52:38,848 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 04:52:38,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2019-11-07 04:52:38,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 341. [2019-11-07 04:52:38,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2019-11-07 04:52:39,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 445 transitions. [2019-11-07 04:52:39,005 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 445 transitions. Word has length 96 [2019-11-07 04:52:39,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:52:39,006 INFO L462 AbstractCegarLoop]: Abstraction has 341 states and 445 transitions. [2019-11-07 04:52:39,007 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:52:39,007 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 445 transitions. [2019-11-07 04:52:39,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-11-07 04:52:39,020 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:52:39,020 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:52:39,020 INFO L410 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:52:39,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:52:39,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1364338890, now seen corresponding path program 1 times [2019-11-07 04:52:39,021 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:52:39,022 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640858952] [2019-11-07 04:52:39,026 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:52:39,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:52:39,250 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 04:52:39,254 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640858952] [2019-11-07 04:52:39,255 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:52:39,256 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 04:52:39,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122551426] [2019-11-07 04:52:39,265 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:52:39,265 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:52:39,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:52:39,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:52:39,272 INFO L87 Difference]: Start difference. First operand 341 states and 445 transitions. Second operand 4 states. [2019-11-07 04:52:39,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:52:39,672 INFO L93 Difference]: Finished difference Result 982 states and 1353 transitions. [2019-11-07 04:52:39,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 04:52:39,672 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 96 [2019-11-07 04:52:39,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:52:39,698 INFO L225 Difference]: With dead ends: 982 [2019-11-07 04:52:39,698 INFO L226 Difference]: Without dead ends: 657 [2019-11-07 04:52:39,700 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 04:52:39,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2019-11-07 04:52:39,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 652. [2019-11-07 04:52:39,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 652 states. [2019-11-07 04:52:39,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 848 transitions. [2019-11-07 04:52:39,778 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 848 transitions. Word has length 96 [2019-11-07 04:52:39,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:52:39,778 INFO L462 AbstractCegarLoop]: Abstraction has 652 states and 848 transitions. [2019-11-07 04:52:39,779 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:52:39,779 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 848 transitions. [2019-11-07 04:52:39,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-11-07 04:52:39,780 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:52:39,781 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:52:39,781 INFO L410 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:52:39,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:52:39,781 INFO L82 PathProgramCache]: Analyzing trace with hash 186364329, now seen corresponding path program 1 times [2019-11-07 04:52:39,782 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:52:39,782 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590399420] [2019-11-07 04:52:39,782 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:52:39,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:52:39,942 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 04:52:39,943 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590399420] [2019-11-07 04:52:39,943 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:52:39,943 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 04:52:39,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342961465] [2019-11-07 04:52:39,944 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:52:39,944 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:52:39,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:52:39,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:52:39,945 INFO L87 Difference]: Start difference. First operand 652 states and 848 transitions. Second operand 4 states. [2019-11-07 04:52:40,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:52:40,326 INFO L93 Difference]: Finished difference Result 1907 states and 2620 transitions. [2019-11-07 04:52:40,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 04:52:40,329 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 96 [2019-11-07 04:52:40,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:52:40,338 INFO L225 Difference]: With dead ends: 1907 [2019-11-07 04:52:40,338 INFO L226 Difference]: Without dead ends: 1271 [2019-11-07 04:52:40,342 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 04:52:40,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1271 states. [2019-11-07 04:52:40,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1271 to 1264. [2019-11-07 04:52:40,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1264 states. [2019-11-07 04:52:40,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1264 states to 1264 states and 1638 transitions. [2019-11-07 04:52:40,468 INFO L78 Accepts]: Start accepts. Automaton has 1264 states and 1638 transitions. Word has length 96 [2019-11-07 04:52:40,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:52:40,468 INFO L462 AbstractCegarLoop]: Abstraction has 1264 states and 1638 transitions. [2019-11-07 04:52:40,468 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:52:40,469 INFO L276 IsEmpty]: Start isEmpty. Operand 1264 states and 1638 transitions. [2019-11-07 04:52:40,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-11-07 04:52:40,473 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:52:40,473 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:52:40,473 INFO L410 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:52:40,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:52:40,477 INFO L82 PathProgramCache]: Analyzing trace with hash -844966486, now seen corresponding path program 1 times [2019-11-07 04:52:40,477 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:52:40,478 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788637197] [2019-11-07 04:52:40,478 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:52:40,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:52:40,627 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 04:52:40,627 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788637197] [2019-11-07 04:52:40,627 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:52:40,627 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 04:52:40,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391649753] [2019-11-07 04:52:40,628 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:52:40,629 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:52:40,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:52:40,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:52:40,629 INFO L87 Difference]: Start difference. First operand 1264 states and 1638 transitions. Second operand 4 states. [2019-11-07 04:52:41,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:52:41,028 INFO L93 Difference]: Finished difference Result 3727 states and 5116 transitions. [2019-11-07 04:52:41,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 04:52:41,029 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 96 [2019-11-07 04:52:41,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:52:41,049 INFO L225 Difference]: With dead ends: 3727 [2019-11-07 04:52:41,049 INFO L226 Difference]: Without dead ends: 2479 [2019-11-07 04:52:41,058 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 04:52:41,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2479 states. [2019-11-07 04:52:41,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2479 to 2468. [2019-11-07 04:52:41,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2468 states. [2019-11-07 04:52:41,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2468 states to 2468 states and 3192 transitions. [2019-11-07 04:52:41,273 INFO L78 Accepts]: Start accepts. Automaton has 2468 states and 3192 transitions. Word has length 96 [2019-11-07 04:52:41,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:52:41,274 INFO L462 AbstractCegarLoop]: Abstraction has 2468 states and 3192 transitions. [2019-11-07 04:52:41,274 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:52:41,274 INFO L276 IsEmpty]: Start isEmpty. Operand 2468 states and 3192 transitions. [2019-11-07 04:52:41,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-11-07 04:52:41,275 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:52:41,276 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:52:41,276 INFO L410 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:52:41,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:52:41,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1718444181, now seen corresponding path program 1 times [2019-11-07 04:52:41,277 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:52:41,277 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170825256] [2019-11-07 04:52:41,278 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:52:41,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:52:41,387 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 04:52:41,388 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170825256] [2019-11-07 04:52:41,388 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:52:41,388 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:52:41,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368785261] [2019-11-07 04:52:41,389 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:52:41,389 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:52:41,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:52:41,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:52:41,390 INFO L87 Difference]: Start difference. First operand 2468 states and 3192 transitions. Second operand 3 states. [2019-11-07 04:52:41,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:52:41,650 INFO L93 Difference]: Finished difference Result 7320 states and 10195 transitions. [2019-11-07 04:52:41,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:52:41,651 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 96 [2019-11-07 04:52:41,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:52:41,698 INFO L225 Difference]: With dead ends: 7320 [2019-11-07 04:52:41,698 INFO L226 Difference]: Without dead ends: 4868 [2019-11-07 04:52:41,716 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 04:52:41,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4868 states. [2019-11-07 04:52:42,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4868 to 4868. [2019-11-07 04:52:42,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4868 states. [2019-11-07 04:52:42,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4868 states to 4868 states and 6635 transitions. [2019-11-07 04:52:42,087 INFO L78 Accepts]: Start accepts. Automaton has 4868 states and 6635 transitions. Word has length 96 [2019-11-07 04:52:42,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:52:42,088 INFO L462 AbstractCegarLoop]: Abstraction has 4868 states and 6635 transitions. [2019-11-07 04:52:42,088 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:52:42,088 INFO L276 IsEmpty]: Start isEmpty. Operand 4868 states and 6635 transitions. [2019-11-07 04:52:42,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2019-11-07 04:52:42,093 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:52:42,093 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:52:42,094 INFO L410 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:52:42,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:52:42,094 INFO L82 PathProgramCache]: Analyzing trace with hash 942542599, now seen corresponding path program 1 times [2019-11-07 04:52:42,094 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:52:42,094 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174828630] [2019-11-07 04:52:42,094 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:52:42,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:52:42,181 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-07 04:52:42,181 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174828630] [2019-11-07 04:52:42,182 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:52:42,183 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 04:52:42,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059005562] [2019-11-07 04:52:42,184 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:52:42,184 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:52:42,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:52:42,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:52:42,184 INFO L87 Difference]: Start difference. First operand 4868 states and 6635 transitions. Second operand 4 states. [2019-11-07 04:52:42,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:52:42,811 INFO L93 Difference]: Finished difference Result 15383 states and 21803 transitions. [2019-11-07 04:52:42,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 04:52:42,812 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 114 [2019-11-07 04:52:42,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:52:42,884 INFO L225 Difference]: With dead ends: 15383 [2019-11-07 04:52:42,884 INFO L226 Difference]: Without dead ends: 10532 [2019-11-07 04:52:42,925 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 04:52:42,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10532 states. [2019-11-07 04:52:43,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10532 to 8046. [2019-11-07 04:52:43,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8046 states. [2019-11-07 04:52:43,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8046 states to 8046 states and 11400 transitions. [2019-11-07 04:52:43,664 INFO L78 Accepts]: Start accepts. Automaton has 8046 states and 11400 transitions. Word has length 114 [2019-11-07 04:52:43,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:52:43,665 INFO L462 AbstractCegarLoop]: Abstraction has 8046 states and 11400 transitions. [2019-11-07 04:52:43,665 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:52:43,665 INFO L276 IsEmpty]: Start isEmpty. Operand 8046 states and 11400 transitions. [2019-11-07 04:52:43,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2019-11-07 04:52:43,687 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:52:43,687 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, 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 04:52:43,687 INFO L410 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:52:43,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:52:43,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1778376072, now seen corresponding path program 1 times [2019-11-07 04:52:43,688 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:52:43,688 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678441819] [2019-11-07 04:52:43,688 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:52:43,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:52:43,828 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2019-11-07 04:52:43,828 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678441819] [2019-11-07 04:52:43,828 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:52:43,829 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:52:43,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801191739] [2019-11-07 04:52:43,829 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:52:43,830 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:52:43,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:52:43,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:52:43,830 INFO L87 Difference]: Start difference. First operand 8046 states and 11400 transitions. Second operand 3 states. [2019-11-07 04:52:44,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:52:44,591 INFO L93 Difference]: Finished difference Result 22248 states and 32246 transitions. [2019-11-07 04:52:44,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:52:44,592 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 176 [2019-11-07 04:52:44,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:52:44,696 INFO L225 Difference]: With dead ends: 22248 [2019-11-07 04:52:44,696 INFO L226 Difference]: Without dead ends: 14219 [2019-11-07 04:52:44,745 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 04:52:44,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14219 states. [2019-11-07 04:52:45,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14219 to 10886. [2019-11-07 04:52:45,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10886 states. [2019-11-07 04:52:45,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10886 states to 10886 states and 15656 transitions. [2019-11-07 04:52:45,646 INFO L78 Accepts]: Start accepts. Automaton has 10886 states and 15656 transitions. Word has length 176 [2019-11-07 04:52:45,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:52:45,648 INFO L462 AbstractCegarLoop]: Abstraction has 10886 states and 15656 transitions. [2019-11-07 04:52:45,648 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:52:45,648 INFO L276 IsEmpty]: Start isEmpty. Operand 10886 states and 15656 transitions. [2019-11-07 04:52:45,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2019-11-07 04:52:45,678 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:52:45,678 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, 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 04:52:45,678 INFO L410 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:52:45,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:52:45,678 INFO L82 PathProgramCache]: Analyzing trace with hash -219056969, now seen corresponding path program 1 times [2019-11-07 04:52:45,679 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:52:45,679 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321193684] [2019-11-07 04:52:45,679 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:52:45,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:52:45,804 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2019-11-07 04:52:45,805 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321193684] [2019-11-07 04:52:45,805 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937684413] [2019-11-07 04:52:45,805 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 04:52:46,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:52:46,052 INFO L256 TraceCheckSpWp]: Trace formula consists of 1235 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-07 04:52:46,068 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:52:46,173 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-11-07 04:52:46,174 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:52:47,261 WARN L191 SmtUtils]: Spent 968.00 ms on a formula simplification that was a NOOP. DAG size: 4 [2019-11-07 04:52:47,471 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2019-11-07 04:52:47,472 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 04:52:47,473 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [6] total 7 [2019-11-07 04:52:47,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107235088] [2019-11-07 04:52:47,474 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:52:47,474 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:52:47,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:52:47,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:52:47,475 INFO L87 Difference]: Start difference. First operand 10886 states and 15656 transitions. Second operand 4 states. [2019-11-07 04:52:48,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:52:48,935 INFO L93 Difference]: Finished difference Result 32369 states and 50153 transitions. [2019-11-07 04:52:48,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 04:52:48,936 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 177 [2019-11-07 04:52:48,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:52:49,040 INFO L225 Difference]: With dead ends: 32369 [2019-11-07 04:52:49,040 INFO L226 Difference]: Without dead ends: 21499 [2019-11-07 04:52:49,118 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 355 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 04:52:49,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21499 states. [2019-11-07 04:52:50,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21499 to 21358. [2019-11-07 04:52:50,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21358 states. [2019-11-07 04:52:50,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21358 states to 21358 states and 30804 transitions. [2019-11-07 04:52:50,548 INFO L78 Accepts]: Start accepts. Automaton has 21358 states and 30804 transitions. Word has length 177 [2019-11-07 04:52:50,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:52:50,549 INFO L462 AbstractCegarLoop]: Abstraction has 21358 states and 30804 transitions. [2019-11-07 04:52:50,549 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:52:50,549 INFO L276 IsEmpty]: Start isEmpty. Operand 21358 states and 30804 transitions. [2019-11-07 04:52:50,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2019-11-07 04:52:50,580 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:52:50,581 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, 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 04:52:50,784 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:52:50,785 INFO L410 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:52:50,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:52:50,786 INFO L82 PathProgramCache]: Analyzing trace with hash 828050317, now seen corresponding path program 1 times [2019-11-07 04:52:50,786 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:52:50,787 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560322475] [2019-11-07 04:52:50,787 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:52:50,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:52:50,889 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2019-11-07 04:52:50,890 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560322475] [2019-11-07 04:52:50,890 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:52:50,890 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:52:50,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609183180] [2019-11-07 04:52:50,891 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:52:50,891 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:52:50,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:52:50,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:52:50,892 INFO L87 Difference]: Start difference. First operand 21358 states and 30804 transitions. Second operand 3 states. [2019-11-07 04:52:52,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:52:52,258 INFO L93 Difference]: Finished difference Result 57957 states and 85753 transitions. [2019-11-07 04:52:52,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:52:52,258 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 176 [2019-11-07 04:52:52,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:52:53,599 INFO L225 Difference]: With dead ends: 57957 [2019-11-07 04:52:53,600 INFO L226 Difference]: Without dead ends: 36616 [2019-11-07 04:52:53,733 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 04:52:53,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36616 states. [2019-11-07 04:52:55,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36616 to 31366. [2019-11-07 04:52:55,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31366 states. [2019-11-07 04:52:55,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31366 states to 31366 states and 45087 transitions. [2019-11-07 04:52:55,321 INFO L78 Accepts]: Start accepts. Automaton has 31366 states and 45087 transitions. Word has length 176 [2019-11-07 04:52:55,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:52:55,322 INFO L462 AbstractCegarLoop]: Abstraction has 31366 states and 45087 transitions. [2019-11-07 04:52:55,322 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:52:55,322 INFO L276 IsEmpty]: Start isEmpty. Operand 31366 states and 45087 transitions. [2019-11-07 04:52:55,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2019-11-07 04:52:55,365 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:52:55,365 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, 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] [2019-11-07 04:52:55,366 INFO L410 AbstractCegarLoop]: === Iteration 10 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:52:55,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:52:55,366 INFO L82 PathProgramCache]: Analyzing trace with hash -807518835, now seen corresponding path program 1 times [2019-11-07 04:52:55,366 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:52:55,367 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893351237] [2019-11-07 04:52:55,367 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:52:55,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:52:55,476 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-11-07 04:52:55,476 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893351237] [2019-11-07 04:52:55,476 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448124094] [2019-11-07 04:52:55,477 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 04:52:55,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:52:55,739 INFO L256 TraceCheckSpWp]: Trace formula consists of 1242 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-07 04:52:55,747 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:52:55,806 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-11-07 04:52:55,806 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:52:56,034 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-11-07 04:52:56,035 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 04:52:56,036 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [6] total 7 [2019-11-07 04:52:56,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921427173] [2019-11-07 04:52:56,037 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:52:56,037 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:52:56,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:52:56,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:52:56,038 INFO L87 Difference]: Start difference. First operand 31366 states and 45087 transitions. Second operand 4 states. [2019-11-07 04:52:59,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:52:59,663 INFO L93 Difference]: Finished difference Result 93226 states and 142169 transitions. [2019-11-07 04:52:59,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 04:52:59,663 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 178 [2019-11-07 04:52:59,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:52:59,894 INFO L225 Difference]: With dead ends: 93226 [2019-11-07 04:52:59,895 INFO L226 Difference]: Without dead ends: 61876 [2019-11-07 04:53:00,223 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 357 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 04:53:00,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61876 states. [2019-11-07 04:53:04,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61876 to 61119. [2019-11-07 04:53:04,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61119 states. [2019-11-07 04:53:05,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61119 states to 61119 states and 87853 transitions. [2019-11-07 04:53:05,068 INFO L78 Accepts]: Start accepts. Automaton has 61119 states and 87853 transitions. Word has length 178 [2019-11-07 04:53:05,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:53:05,069 INFO L462 AbstractCegarLoop]: Abstraction has 61119 states and 87853 transitions. [2019-11-07 04:53:05,069 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:53:05,069 INFO L276 IsEmpty]: Start isEmpty. Operand 61119 states and 87853 transitions. [2019-11-07 04:53:05,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2019-11-07 04:53:05,128 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:53:05,129 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, 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 04:53:05,333 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:53:05,333 INFO L410 AbstractCegarLoop]: === Iteration 11 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:53:05,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:53:05,334 INFO L82 PathProgramCache]: Analyzing trace with hash 27419066, now seen corresponding path program 1 times [2019-11-07 04:53:05,334 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:53:05,334 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146620846] [2019-11-07 04:53:05,334 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:53:05,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:53:05,437 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2019-11-07 04:53:05,438 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146620846] [2019-11-07 04:53:05,438 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232819067] [2019-11-07 04:53:05,438 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:53:05,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:53:05,717 INFO L256 TraceCheckSpWp]: Trace formula consists of 1283 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-07 04:53:05,728 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:53:05,820 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:53:05,820 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:53:06,044 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2019-11-07 04:53:06,045 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 04:53:06,045 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 3] total 6 [2019-11-07 04:53:06,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635890922] [2019-11-07 04:53:06,048 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:53:06,048 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:53:06,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:53:06,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-07 04:53:06,049 INFO L87 Difference]: Start difference. First operand 61119 states and 87853 transitions. Second operand 3 states.