/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/systemc/transmitter.02.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 20:27:25,241 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 20:27:25,244 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 20:27:25,283 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 20:27:25,283 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 20:27:25,284 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 20:27:25,286 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 20:27:25,287 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 20:27:25,289 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 20:27:25,289 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 20:27:25,290 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 20:27:25,291 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 20:27:25,292 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 20:27:25,293 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 20:27:25,294 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 20:27:25,295 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 20:27:25,295 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 20:27:25,296 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 20:27:25,298 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 20:27:25,300 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 20:27:25,301 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 20:27:25,302 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 20:27:25,303 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 20:27:25,304 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 20:27:25,306 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 20:27:25,307 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 20:27:25,307 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 20:27:25,308 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 20:27:25,308 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 20:27:25,309 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 20:27:25,309 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 20:27:25,310 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 20:27:25,311 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 20:27:25,311 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 20:27:25,312 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 20:27:25,313 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 20:27:25,313 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 20:27:25,313 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 20:27:25,314 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 20:27:25,314 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 20:27:25,315 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 20:27:25,316 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 20:27:25,337 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 20:27:25,337 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 20:27:25,338 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 20:27:25,338 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 20:27:25,338 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 20:27:25,339 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 20:27:25,339 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 20:27:25,339 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 20:27:25,339 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 20:27:25,340 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 20:27:25,340 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 20:27:25,340 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 20:27:25,340 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 20:27:25,340 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 20:27:25,340 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 20:27:25,341 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 20:27:25,341 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 20:27:25,341 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 20:27:25,341 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 20:27:25,341 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 20:27:25,342 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 20:27:25,342 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 20:27:25,342 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 20:27:25,342 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 20:27:25,343 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 20:27:25,343 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 20:27:25,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 20:27:25,343 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 20:27:25,343 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 20:27:25,344 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SHALLOWEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SHALLOWEST; [2020-08-18 20:27:25,635 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 20:27:25,647 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 20:27:25,650 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 20:27:25,651 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 20:27:25,652 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 20:27:25,652 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/transmitter.02.cil.c [2020-08-18 20:27:25,709 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ccce848e5/cf33fa89a81542cdbf9dfd69955a3a69/FLAGe923b8c9f [2020-08-18 20:27:26,156 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 20:27:26,156 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/transmitter.02.cil.c [2020-08-18 20:27:26,166 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ccce848e5/cf33fa89a81542cdbf9dfd69955a3a69/FLAGe923b8c9f [2020-08-18 20:27:26,539 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ccce848e5/cf33fa89a81542cdbf9dfd69955a3a69 [2020-08-18 20:27:26,549 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 20:27:26,551 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 20:27:26,553 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 20:27:26,553 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 20:27:26,557 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 20:27:26,558 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:27:26" (1/1) ... [2020-08-18 20:27:26,561 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bdd1826 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:27:26, skipping insertion in model container [2020-08-18 20:27:26,561 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:27:26" (1/1) ... [2020-08-18 20:27:26,570 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 20:27:26,624 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 20:27:26,859 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:27:26,865 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 20:27:26,986 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:27:27,009 INFO L208 MainTranslator]: Completed translation [2020-08-18 20:27:27,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:27:27 WrapperNode [2020-08-18 20:27:27,009 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 20:27:27,010 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 20:27:27,010 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 20:27:27,010 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 20:27:27,024 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:27:27" (1/1) ... [2020-08-18 20:27:27,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:27:27" (1/1) ... [2020-08-18 20:27:27,032 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:27:27" (1/1) ... [2020-08-18 20:27:27,032 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:27:27" (1/1) ... [2020-08-18 20:27:27,042 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:27:27" (1/1) ... [2020-08-18 20:27:27,053 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:27:27" (1/1) ... [2020-08-18 20:27:27,055 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:27:27" (1/1) ... [2020-08-18 20:27:27,059 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 20:27:27,059 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 20:27:27,059 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 20:27:27,060 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 20:27:27,060 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:27:27" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-08-18 20:27:27,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 20:27:27,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 20:27:27,113 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-08-18 20:27:27,113 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2020-08-18 20:27:27,113 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2020-08-18 20:27:27,113 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit2 [2020-08-18 20:27:27,113 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2020-08-18 20:27:27,113 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2020-08-18 20:27:27,114 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit2_triggered [2020-08-18 20:27:27,114 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2020-08-18 20:27:27,114 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-08-18 20:27:27,114 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-08-18 20:27:27,114 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-08-18 20:27:27,114 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2020-08-18 20:27:27,115 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2020-08-18 20:27:27,115 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2020-08-18 20:27:27,115 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2020-08-18 20:27:27,115 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2020-08-18 20:27:27,115 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2020-08-18 20:27:27,115 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-08-18 20:27:27,116 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-08-18 20:27:27,116 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-08-18 20:27:27,116 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 20:27:27,116 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 20:27:27,116 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 20:27:27,116 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-08-18 20:27:27,117 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2020-08-18 20:27:27,117 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2020-08-18 20:27:27,117 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit2_triggered [2020-08-18 20:27:27,117 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2020-08-18 20:27:27,117 INFO L130 BoogieDeclarations]: Found specification of procedure master [2020-08-18 20:27:27,117 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2020-08-18 20:27:27,118 INFO L130 BoogieDeclarations]: Found specification of procedure transmit2 [2020-08-18 20:27:27,118 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2020-08-18 20:27:27,118 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-08-18 20:27:27,118 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-08-18 20:27:27,118 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-08-18 20:27:27,118 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2020-08-18 20:27:27,119 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2020-08-18 20:27:27,119 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2020-08-18 20:27:27,119 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2020-08-18 20:27:27,119 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2020-08-18 20:27:27,119 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-08-18 20:27:27,119 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-08-18 20:27:27,120 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-08-18 20:27:27,120 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 20:27:27,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 20:27:27,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 20:27:27,620 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 20:27:27,620 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-08-18 20:27:27,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:27:27 BoogieIcfgContainer [2020-08-18 20:27:27,626 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 20:27:27,628 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 20:27:27,628 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 20:27:27,631 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 20:27:27,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 08:27:26" (1/3) ... [2020-08-18 20:27:27,632 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dc45d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:27:27, skipping insertion in model container [2020-08-18 20:27:27,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:27:27" (2/3) ... [2020-08-18 20:27:27,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dc45d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:27:27, skipping insertion in model container [2020-08-18 20:27:27,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:27:27" (3/3) ... [2020-08-18 20:27:27,635 INFO L109 eAbstractionObserver]: Analyzing ICFG transmitter.02.cil.c [2020-08-18 20:27:27,645 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 20:27:27,652 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 20:27:27,665 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 20:27:27,693 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 20:27:27,693 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 20:27:27,693 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 20:27:27,693 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 20:27:27,694 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 20:27:27,694 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 20:27:27,694 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 20:27:27,695 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 20:27:27,718 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-08-18 20:27:27,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-18 20:27:27,728 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:27:27,730 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:27:27,730 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:27:27,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:27:27,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1996614335, now seen corresponding path program 1 times [2020-08-18 20:27:27,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:27:27,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1931976328] [2020-08-18 20:27:27,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:27:27,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:28,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:27:28,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:28,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:27:28,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:28,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:27:28,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:28,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 20:27:28,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:28,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 20:27:28,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:28,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 20:27:28,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:28,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:27:28,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:28,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 20:27:28,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:28,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 20:27:28,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:28,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 20:27:28,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:28,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 20:27:28,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:28,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:27:28,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1931976328] [2020-08-18 20:27:28,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:27:28,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 20:27:28,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954910780] [2020-08-18 20:27:28,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 20:27:28,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:27:28,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 20:27:28,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-18 20:27:28,264 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 8 states. [2020-08-18 20:27:29,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:27:29,656 INFO L93 Difference]: Finished difference Result 412 states and 626 transitions. [2020-08-18 20:27:29,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 20:27:29,658 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 90 [2020-08-18 20:27:29,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:27:29,674 INFO L225 Difference]: With dead ends: 412 [2020-08-18 20:27:29,674 INFO L226 Difference]: Without dead ends: 247 [2020-08-18 20:27:29,680 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2020-08-18 20:27:29,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2020-08-18 20:27:29,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 160. [2020-08-18 20:27:29,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-08-18 20:27:29,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 212 transitions. [2020-08-18 20:27:29,756 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 212 transitions. Word has length 90 [2020-08-18 20:27:29,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:27:29,757 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 212 transitions. [2020-08-18 20:27:29,757 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 20:27:29,757 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 212 transitions. [2020-08-18 20:27:29,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-18 20:27:29,762 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:27:29,762 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:27:29,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 20:27:29,762 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:27:29,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:27:29,763 INFO L82 PathProgramCache]: Analyzing trace with hash -387310403, now seen corresponding path program 1 times [2020-08-18 20:27:29,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:27:29,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [110586708] [2020-08-18 20:27:29,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:27:29,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:29,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:27:29,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:29,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:27:29,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:29,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:27:29,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:29,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 20:27:29,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:29,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 20:27:29,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:30,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 20:27:30,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:30,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:27:30,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:30,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 20:27:30,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:30,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 20:27:30,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:30,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 20:27:30,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:30,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 20:27:30,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:30,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:27:30,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [110586708] [2020-08-18 20:27:30,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:27:30,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 20:27:30,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566468626] [2020-08-18 20:27:30,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 20:27:30,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:27:30,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 20:27:30,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-18 20:27:30,045 INFO L87 Difference]: Start difference. First operand 160 states and 212 transitions. Second operand 9 states. [2020-08-18 20:27:32,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:27:32,086 INFO L93 Difference]: Finished difference Result 579 states and 839 transitions. [2020-08-18 20:27:32,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 20:27:32,086 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 90 [2020-08-18 20:27:32,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:27:32,093 INFO L225 Difference]: With dead ends: 579 [2020-08-18 20:27:32,093 INFO L226 Difference]: Without dead ends: 439 [2020-08-18 20:27:32,096 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-08-18 20:27:32,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2020-08-18 20:27:32,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 294. [2020-08-18 20:27:32,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-08-18 20:27:32,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 393 transitions. [2020-08-18 20:27:32,159 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 393 transitions. Word has length 90 [2020-08-18 20:27:32,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:27:32,160 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 393 transitions. [2020-08-18 20:27:32,160 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 20:27:32,160 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 393 transitions. [2020-08-18 20:27:32,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-18 20:27:32,162 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:27:32,163 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:27:32,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 20:27:32,163 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:27:32,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:27:32,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1952833149, now seen corresponding path program 1 times [2020-08-18 20:27:32,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:27:32,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1510598905] [2020-08-18 20:27:32,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:27:32,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:32,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:27:32,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:32,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:27:32,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:32,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:27:32,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:32,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 20:27:32,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:32,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 20:27:32,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:32,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 20:27:32,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:32,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:27:32,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:32,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 20:27:32,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:32,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 20:27:32,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:32,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 20:27:32,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:32,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 20:27:32,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:32,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:27:32,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1510598905] [2020-08-18 20:27:32,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:27:32,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 20:27:32,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619541660] [2020-08-18 20:27:32,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 20:27:32,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:27:32,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 20:27:32,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-18 20:27:32,443 INFO L87 Difference]: Start difference. First operand 294 states and 393 transitions. Second operand 10 states. [2020-08-18 20:27:33,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:27:33,549 INFO L93 Difference]: Finished difference Result 704 states and 993 transitions. [2020-08-18 20:27:33,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 20:27:33,550 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 90 [2020-08-18 20:27:33,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:27:33,559 INFO L225 Difference]: With dead ends: 704 [2020-08-18 20:27:33,559 INFO L226 Difference]: Without dead ends: 430 [2020-08-18 20:27:33,561 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-08-18 20:27:33,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2020-08-18 20:27:33,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 294. [2020-08-18 20:27:33,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-08-18 20:27:33,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 386 transitions. [2020-08-18 20:27:33,629 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 386 transitions. Word has length 90 [2020-08-18 20:27:33,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:27:33,629 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 386 transitions. [2020-08-18 20:27:33,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 20:27:33,630 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 386 transitions. [2020-08-18 20:27:33,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-18 20:27:33,632 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:27:33,632 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:27:33,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 20:27:33,633 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:27:33,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:27:33,633 INFO L82 PathProgramCache]: Analyzing trace with hash 227206333, now seen corresponding path program 1 times [2020-08-18 20:27:33,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:27:33,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [200124031] [2020-08-18 20:27:33,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:27:33,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:33,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:27:33,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:33,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:27:33,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:33,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:27:33,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:33,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 20:27:33,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:33,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 20:27:33,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:33,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 20:27:33,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:33,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:27:33,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:33,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 20:27:33,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:33,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 20:27:33,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:33,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 20:27:33,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:33,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 20:27:33,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:33,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:27:33,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [200124031] [2020-08-18 20:27:33,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:27:33,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 20:27:33,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893969368] [2020-08-18 20:27:33,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 20:27:33,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:27:33,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 20:27:33,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-18 20:27:33,808 INFO L87 Difference]: Start difference. First operand 294 states and 386 transitions. Second operand 10 states. [2020-08-18 20:27:34,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:27:34,916 INFO L93 Difference]: Finished difference Result 700 states and 971 transitions. [2020-08-18 20:27:34,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 20:27:34,916 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 90 [2020-08-18 20:27:34,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:27:34,920 INFO L225 Difference]: With dead ends: 700 [2020-08-18 20:27:34,920 INFO L226 Difference]: Without dead ends: 426 [2020-08-18 20:27:34,922 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-08-18 20:27:34,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2020-08-18 20:27:34,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 294. [2020-08-18 20:27:34,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-08-18 20:27:34,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 379 transitions. [2020-08-18 20:27:34,953 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 379 transitions. Word has length 90 [2020-08-18 20:27:34,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:27:34,953 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 379 transitions. [2020-08-18 20:27:34,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 20:27:34,954 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 379 transitions. [2020-08-18 20:27:34,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-18 20:27:34,955 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:27:34,956 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:27:34,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 20:27:34,956 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:27:34,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:27:34,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1418466941, now seen corresponding path program 1 times [2020-08-18 20:27:34,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:27:34,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1243513473] [2020-08-18 20:27:34,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:27:34,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:35,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:27:35,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:35,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:27:35,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:35,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:27:35,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:35,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 20:27:35,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:35,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 20:27:35,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:35,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 20:27:35,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:35,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:27:35,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:35,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 20:27:35,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:35,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 20:27:35,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:35,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 20:27:35,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:35,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 20:27:35,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:35,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:27:35,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1243513473] [2020-08-18 20:27:35,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:27:35,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 20:27:35,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127214408] [2020-08-18 20:27:35,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 20:27:35,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:27:35,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 20:27:35,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-18 20:27:35,153 INFO L87 Difference]: Start difference. First operand 294 states and 379 transitions. Second operand 10 states. [2020-08-18 20:27:36,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:27:36,958 INFO L93 Difference]: Finished difference Result 855 states and 1230 transitions. [2020-08-18 20:27:36,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 20:27:36,959 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 90 [2020-08-18 20:27:36,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:27:36,965 INFO L225 Difference]: With dead ends: 855 [2020-08-18 20:27:36,965 INFO L226 Difference]: Without dead ends: 581 [2020-08-18 20:27:36,967 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420 [2020-08-18 20:27:36,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2020-08-18 20:27:37,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 366. [2020-08-18 20:27:37,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 366 states. [2020-08-18 20:27:37,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 457 transitions. [2020-08-18 20:27:37,016 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 457 transitions. Word has length 90 [2020-08-18 20:27:37,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:27:37,041 INFO L479 AbstractCegarLoop]: Abstraction has 366 states and 457 transitions. [2020-08-18 20:27:37,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 20:27:37,041 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 457 transitions. [2020-08-18 20:27:37,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-18 20:27:37,043 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:27:37,043 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:27:37,044 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 20:27:37,044 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:27:37,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:27:37,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1504622653, now seen corresponding path program 1 times [2020-08-18 20:27:37,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:27:37,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1012369] [2020-08-18 20:27:37,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:27:37,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:37,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:27:37,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:37,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:27:37,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:37,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:27:37,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:37,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 20:27:37,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:37,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 20:27:37,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:37,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 20:27:37,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:37,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:27:37,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:37,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 20:27:37,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:37,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 20:27:37,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:37,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 20:27:37,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:37,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 20:27:37,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:37,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:27:37,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1012369] [2020-08-18 20:27:37,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:27:37,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 20:27:37,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599801623] [2020-08-18 20:27:37,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 20:27:37,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:27:37,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 20:27:37,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 20:27:37,232 INFO L87 Difference]: Start difference. First operand 366 states and 457 transitions. Second operand 10 states. [2020-08-18 20:27:38,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:27:38,952 INFO L93 Difference]: Finished difference Result 877 states and 1164 transitions. [2020-08-18 20:27:38,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 20:27:38,953 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 90 [2020-08-18 20:27:38,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:27:38,961 INFO L225 Difference]: With dead ends: 877 [2020-08-18 20:27:38,964 INFO L226 Difference]: Without dead ends: 532 [2020-08-18 20:27:38,967 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2020-08-18 20:27:38,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2020-08-18 20:27:39,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 376. [2020-08-18 20:27:39,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2020-08-18 20:27:39,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 465 transitions. [2020-08-18 20:27:39,015 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 465 transitions. Word has length 90 [2020-08-18 20:27:39,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:27:39,015 INFO L479 AbstractCegarLoop]: Abstraction has 376 states and 465 transitions. [2020-08-18 20:27:39,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 20:27:39,016 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 465 transitions. [2020-08-18 20:27:39,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-18 20:27:39,017 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:27:39,017 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:27:39,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 20:27:39,018 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:27:39,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:27:39,018 INFO L82 PathProgramCache]: Analyzing trace with hash -523963457, now seen corresponding path program 1 times [2020-08-18 20:27:39,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:27:39,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [622822931] [2020-08-18 20:27:39,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:27:39,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:39,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:27:39,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:39,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:27:39,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:39,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:27:39,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:39,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 20:27:39,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:39,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 20:27:39,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:39,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 20:27:39,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:39,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:27:39,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:39,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 20:27:39,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:39,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 20:27:39,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:39,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 20:27:39,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:39,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 20:27:39,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:39,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:27:39,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [622822931] [2020-08-18 20:27:39,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:27:39,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 20:27:39,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26634417] [2020-08-18 20:27:39,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 20:27:39,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:27:39,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 20:27:39,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 20:27:39,208 INFO L87 Difference]: Start difference. First operand 376 states and 465 transitions. Second operand 10 states. [2020-08-18 20:27:40,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:27:40,961 INFO L93 Difference]: Finished difference Result 915 states and 1208 transitions. [2020-08-18 20:27:40,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 20:27:40,962 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 90 [2020-08-18 20:27:40,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:27:40,966 INFO L225 Difference]: With dead ends: 915 [2020-08-18 20:27:40,967 INFO L226 Difference]: Without dead ends: 560 [2020-08-18 20:27:40,969 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2020-08-18 20:27:40,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2020-08-18 20:27:41,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 396. [2020-08-18 20:27:41,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 396 states. [2020-08-18 20:27:41,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 485 transitions. [2020-08-18 20:27:41,012 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 485 transitions. Word has length 90 [2020-08-18 20:27:41,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:27:41,012 INFO L479 AbstractCegarLoop]: Abstraction has 396 states and 485 transitions. [2020-08-18 20:27:41,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 20:27:41,012 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 485 transitions. [2020-08-18 20:27:41,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-18 20:27:41,013 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:27:41,013 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:27:41,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 20:27:41,014 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:27:41,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:27:41,014 INFO L82 PathProgramCache]: Analyzing trace with hash -275816963, now seen corresponding path program 1 times [2020-08-18 20:27:41,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:27:41,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [650992275] [2020-08-18 20:27:41,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:27:41,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:41,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:27:41,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:41,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:27:41,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:41,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:27:41,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:41,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 20:27:41,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:41,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 20:27:41,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:41,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 20:27:41,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:41,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:27:41,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:41,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 20:27:41,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:41,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 20:27:41,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:41,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 20:27:41,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:41,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 20:27:41,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:41,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:27:41,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [650992275] [2020-08-18 20:27:41,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:27:41,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 20:27:41,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333755311] [2020-08-18 20:27:41,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 20:27:41,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:27:41,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 20:27:41,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 20:27:41,202 INFO L87 Difference]: Start difference. First operand 396 states and 485 transitions. Second operand 10 states. [2020-08-18 20:27:42,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:27:42,717 INFO L93 Difference]: Finished difference Result 939 states and 1222 transitions. [2020-08-18 20:27:42,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 20:27:42,718 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 90 [2020-08-18 20:27:42,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:27:42,722 INFO L225 Difference]: With dead ends: 939 [2020-08-18 20:27:42,723 INFO L226 Difference]: Without dead ends: 564 [2020-08-18 20:27:42,724 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2020-08-18 20:27:42,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2020-08-18 20:27:42,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 406. [2020-08-18 20:27:42,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 406 states. [2020-08-18 20:27:42,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 493 transitions. [2020-08-18 20:27:42,764 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 493 transitions. Word has length 90 [2020-08-18 20:27:42,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:27:42,764 INFO L479 AbstractCegarLoop]: Abstraction has 406 states and 493 transitions. [2020-08-18 20:27:42,764 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 20:27:42,764 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 493 transitions. [2020-08-18 20:27:42,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-18 20:27:42,766 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:27:42,766 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:27:42,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 20:27:42,766 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:27:42,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:27:42,767 INFO L82 PathProgramCache]: Analyzing trace with hash -348203521, now seen corresponding path program 1 times [2020-08-18 20:27:42,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:27:42,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [960820809] [2020-08-18 20:27:42,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:27:42,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:42,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:27:42,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:42,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:27:42,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:42,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:27:42,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:42,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 20:27:42,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:42,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 20:27:42,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:42,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 20:27:42,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:42,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:27:42,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:42,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 20:27:42,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:42,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 20:27:42,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:42,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 20:27:42,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:42,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 20:27:42,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:42,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:27:42,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [960820809] [2020-08-18 20:27:42,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:27:42,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 20:27:42,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160682915] [2020-08-18 20:27:42,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 20:27:42,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:27:42,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 20:27:42,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-18 20:27:42,957 INFO L87 Difference]: Start difference. First operand 406 states and 493 transitions. Second operand 10 states. [2020-08-18 20:27:44,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:27:44,694 INFO L93 Difference]: Finished difference Result 1144 states and 1493 transitions. [2020-08-18 20:27:44,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-18 20:27:44,695 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 90 [2020-08-18 20:27:44,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:27:44,704 INFO L225 Difference]: With dead ends: 1144 [2020-08-18 20:27:44,704 INFO L226 Difference]: Without dead ends: 758 [2020-08-18 20:27:44,707 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=161, Invalid=439, Unknown=0, NotChecked=0, Total=600 [2020-08-18 20:27:44,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2020-08-18 20:27:44,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 467. [2020-08-18 20:27:44,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2020-08-18 20:27:44,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 547 transitions. [2020-08-18 20:27:44,777 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 547 transitions. Word has length 90 [2020-08-18 20:27:44,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:27:44,778 INFO L479 AbstractCegarLoop]: Abstraction has 467 states and 547 transitions. [2020-08-18 20:27:44,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 20:27:44,778 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 547 transitions. [2020-08-18 20:27:44,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-18 20:27:44,783 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:27:44,783 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:27:44,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 20:27:44,783 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:27:44,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:27:44,784 INFO L82 PathProgramCache]: Analyzing trace with hash -286163907, now seen corresponding path program 1 times [2020-08-18 20:27:44,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:27:44,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [284691513] [2020-08-18 20:27:44,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:27:44,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:44,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:27:44,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:44,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:27:44,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:44,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:27:44,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:44,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 20:27:44,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:44,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 20:27:44,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:44,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 20:27:44,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:44,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:27:44,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:44,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 20:27:44,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:44,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 20:27:44,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:44,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 20:27:44,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:44,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 20:27:44,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:44,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:27:44,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [284691513] [2020-08-18 20:27:44,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:27:44,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 20:27:44,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865487658] [2020-08-18 20:27:44,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 20:27:44,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:27:44,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 20:27:44,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-18 20:27:44,917 INFO L87 Difference]: Start difference. First operand 467 states and 547 transitions. Second operand 7 states. [2020-08-18 20:27:46,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:27:46,549 INFO L93 Difference]: Finished difference Result 1503 states and 1877 transitions. [2020-08-18 20:27:46,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 20:27:46,550 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 90 [2020-08-18 20:27:46,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:27:46,560 INFO L225 Difference]: With dead ends: 1503 [2020-08-18 20:27:46,560 INFO L226 Difference]: Without dead ends: 1058 [2020-08-18 20:27:46,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-08-18 20:27:46,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1058 states. [2020-08-18 20:27:46,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1058 to 847. [2020-08-18 20:27:46,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 847 states. [2020-08-18 20:27:46,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1018 transitions. [2020-08-18 20:27:46,658 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1018 transitions. Word has length 90 [2020-08-18 20:27:46,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:27:46,659 INFO L479 AbstractCegarLoop]: Abstraction has 847 states and 1018 transitions. [2020-08-18 20:27:46,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 20:27:46,659 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1018 transitions. [2020-08-18 20:27:46,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-08-18 20:27:46,661 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:27:46,661 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:27:46,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 20:27:46,661 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:27:46,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:27:46,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1417763379, now seen corresponding path program 1 times [2020-08-18 20:27:46,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:27:46,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [701999896] [2020-08-18 20:27:46,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:27:46,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:46,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:27:46,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:46,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:27:46,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:46,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:27:46,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:46,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 20:27:46,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:46,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 20:27:46,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:46,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 20:27:46,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:46,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:27:46,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:46,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 20:27:46,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:46,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 20:27:46,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:46,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 20:27:46,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:46,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 20:27:46,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:46,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:27:46,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [701999896] [2020-08-18 20:27:46,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:27:46,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 20:27:46,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879081280] [2020-08-18 20:27:46,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 20:27:46,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:27:46,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 20:27:46,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-18 20:27:46,866 INFO L87 Difference]: Start difference. First operand 847 states and 1018 transitions. Second operand 7 states. [2020-08-18 20:27:48,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:27:48,460 INFO L93 Difference]: Finished difference Result 2813 states and 3701 transitions. [2020-08-18 20:27:48,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 20:27:48,461 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 91 [2020-08-18 20:27:48,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:27:48,474 INFO L225 Difference]: With dead ends: 2813 [2020-08-18 20:27:48,474 INFO L226 Difference]: Without dead ends: 1993 [2020-08-18 20:27:48,478 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-08-18 20:27:48,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1993 states. [2020-08-18 20:27:48,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1993 to 1710. [2020-08-18 20:27:48,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1710 states. [2020-08-18 20:27:48,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1710 states to 1710 states and 2141 transitions. [2020-08-18 20:27:48,652 INFO L78 Accepts]: Start accepts. Automaton has 1710 states and 2141 transitions. Word has length 91 [2020-08-18 20:27:48,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:27:48,652 INFO L479 AbstractCegarLoop]: Abstraction has 1710 states and 2141 transitions. [2020-08-18 20:27:48,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 20:27:48,652 INFO L276 IsEmpty]: Start isEmpty. Operand 1710 states and 2141 transitions. [2020-08-18 20:27:48,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-08-18 20:27:48,655 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:27:48,656 INFO L422 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] [2020-08-18 20:27:48,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 20:27:48,656 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:27:48,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:27:48,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1387972843, now seen corresponding path program 1 times [2020-08-18 20:27:48,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:27:48,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1906888166] [2020-08-18 20:27:48,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:27:48,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:48,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:27:48,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:48,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:27:48,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:48,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:27:48,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:48,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 20:27:48,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:48,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 20:27:48,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:48,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 20:27:48,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:48,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:27:48,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:48,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 20:27:48,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:48,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 20:27:48,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:48,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 20:27:48,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:48,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 20:27:48,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:48,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 20:27:48,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:48,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 20:27:48,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:48,807 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-18 20:27:48,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1906888166] [2020-08-18 20:27:48,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:27:48,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 20:27:48,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329374801] [2020-08-18 20:27:48,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 20:27:48,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:27:48,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 20:27:48,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-18 20:27:48,810 INFO L87 Difference]: Start difference. First operand 1710 states and 2141 transitions. Second operand 9 states. [2020-08-18 20:27:50,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:27:50,148 INFO L93 Difference]: Finished difference Result 3845 states and 5084 transitions. [2020-08-18 20:27:50,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 20:27:50,148 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 111 [2020-08-18 20:27:50,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:27:50,162 INFO L225 Difference]: With dead ends: 3845 [2020-08-18 20:27:50,162 INFO L226 Difference]: Without dead ends: 2157 [2020-08-18 20:27:50,168 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-08-18 20:27:50,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2157 states. [2020-08-18 20:27:50,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2157 to 1767. [2020-08-18 20:27:50,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1767 states. [2020-08-18 20:27:50,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 2232 transitions. [2020-08-18 20:27:50,357 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 2232 transitions. Word has length 111 [2020-08-18 20:27:50,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:27:50,358 INFO L479 AbstractCegarLoop]: Abstraction has 1767 states and 2232 transitions. [2020-08-18 20:27:50,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 20:27:50,358 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 2232 transitions. [2020-08-18 20:27:50,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-08-18 20:27:50,360 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:27:50,360 INFO L422 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] [2020-08-18 20:27:50,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 20:27:50,361 INFO L427 AbstractCegarLoop]: === Iteration 13 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:27:50,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:27:50,362 INFO L82 PathProgramCache]: Analyzing trace with hash 36587625, now seen corresponding path program 1 times [2020-08-18 20:27:50,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:27:50,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [694120946] [2020-08-18 20:27:50,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:27:50,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:50,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:27:50,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:50,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:27:50,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:50,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:27:50,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:50,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 20:27:50,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:50,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 20:27:50,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:50,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 20:27:50,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:50,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:27:50,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:50,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 20:27:50,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:50,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 20:27:50,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:50,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 20:27:50,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:50,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 20:27:50,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:50,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 20:27:50,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:50,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 20:27:50,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:50,508 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-18 20:27:50,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [694120946] [2020-08-18 20:27:50,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:27:50,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 20:27:50,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985600505] [2020-08-18 20:27:50,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 20:27:50,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:27:50,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 20:27:50,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-18 20:27:50,511 INFO L87 Difference]: Start difference. First operand 1767 states and 2232 transitions. Second operand 8 states. [2020-08-18 20:27:52,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:27:52,512 INFO L93 Difference]: Finished difference Result 5835 states and 7942 transitions. [2020-08-18 20:27:52,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 20:27:52,513 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-08-18 20:27:52,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:27:52,531 INFO L225 Difference]: With dead ends: 5835 [2020-08-18 20:27:52,532 INFO L226 Difference]: Without dead ends: 3120 [2020-08-18 20:27:52,546 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2020-08-18 20:27:52,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3120 states. [2020-08-18 20:27:52,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3120 to 2788. [2020-08-18 20:27:52,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2788 states. [2020-08-18 20:27:52,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2788 states to 2788 states and 3646 transitions. [2020-08-18 20:27:52,949 INFO L78 Accepts]: Start accepts. Automaton has 2788 states and 3646 transitions. Word has length 111 [2020-08-18 20:27:52,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:27:52,949 INFO L479 AbstractCegarLoop]: Abstraction has 2788 states and 3646 transitions. [2020-08-18 20:27:52,949 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 20:27:52,949 INFO L276 IsEmpty]: Start isEmpty. Operand 2788 states and 3646 transitions. [2020-08-18 20:27:52,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-08-18 20:27:52,955 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:27:52,955 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:27:52,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-18 20:27:52,955 INFO L427 AbstractCegarLoop]: === Iteration 14 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:27:52,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:27:52,956 INFO L82 PathProgramCache]: Analyzing trace with hash -1178118941, now seen corresponding path program 1 times [2020-08-18 20:27:52,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:27:52,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [72375188] [2020-08-18 20:27:52,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:27:52,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:53,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:27:53,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:53,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:27:53,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:53,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:27:53,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:53,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 20:27:53,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:53,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 20:27:53,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:53,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 20:27:53,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:53,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:27:53,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:53,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 20:27:53,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:53,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 20:27:53,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:53,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 20:27:53,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:53,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 20:27:53,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:53,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 20:27:53,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:53,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 20:27:53,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:53,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 20:27:53,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:53,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 20:27:53,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:53,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:27:53,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:53,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:27:53,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:53,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 20:27:53,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:53,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 20:27:53,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:53,153 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-08-18 20:27:53,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [72375188] [2020-08-18 20:27:53,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:27:53,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 20:27:53,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665439624] [2020-08-18 20:27:53,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 20:27:53,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:27:53,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 20:27:53,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-08-18 20:27:53,155 INFO L87 Difference]: Start difference. First operand 2788 states and 3646 transitions. Second operand 9 states. [2020-08-18 20:27:55,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:27:55,378 INFO L93 Difference]: Finished difference Result 8089 states and 11637 transitions. [2020-08-18 20:27:55,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 20:27:55,382 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 155 [2020-08-18 20:27:55,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:27:55,414 INFO L225 Difference]: With dead ends: 8089 [2020-08-18 20:27:55,414 INFO L226 Difference]: Without dead ends: 5323 [2020-08-18 20:27:55,431 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=125, Invalid=295, Unknown=0, NotChecked=0, Total=420 [2020-08-18 20:27:55,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5323 states. [2020-08-18 20:27:56,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5323 to 4852. [2020-08-18 20:27:56,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4852 states. [2020-08-18 20:27:56,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4852 states to 4852 states and 6633 transitions. [2020-08-18 20:27:56,076 INFO L78 Accepts]: Start accepts. Automaton has 4852 states and 6633 transitions. Word has length 155 [2020-08-18 20:27:56,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:27:56,077 INFO L479 AbstractCegarLoop]: Abstraction has 4852 states and 6633 transitions. [2020-08-18 20:27:56,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 20:27:56,077 INFO L276 IsEmpty]: Start isEmpty. Operand 4852 states and 6633 transitions. [2020-08-18 20:27:56,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-08-18 20:27:56,082 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:27:56,082 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:27:56,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-18 20:27:56,083 INFO L427 AbstractCegarLoop]: === Iteration 15 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:27:56,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:27:56,083 INFO L82 PathProgramCache]: Analyzing trace with hash -390866386, now seen corresponding path program 1 times [2020-08-18 20:27:56,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:27:56,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [135980929] [2020-08-18 20:27:56,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:27:56,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:56,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:27:56,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:56,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:27:56,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:56,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:27:56,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:56,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 20:27:56,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:56,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 20:27:56,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:56,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 20:27:56,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:56,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:27:56,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:56,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 20:27:56,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:56,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 20:27:56,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:56,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 20:27:56,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:56,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 20:27:56,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:56,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-18 20:27:56,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:56,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 20:27:56,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:56,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-18 20:27:56,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:56,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 20:27:56,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:56,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:27:56,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:56,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:27:56,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:56,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 20:27:56,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:56,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 20:27:56,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:27:56,314 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-08-18 20:27:56,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [135980929] [2020-08-18 20:27:56,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:27:56,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 20:27:56,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074856193] [2020-08-18 20:27:56,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 20:27:56,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:27:56,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 20:27:56,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-18 20:27:56,317 INFO L87 Difference]: Start difference. First operand 4852 states and 6633 transitions. Second operand 10 states. [2020-08-18 20:27:59,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:27:59,509 INFO L93 Difference]: Finished difference Result 12975 states and 19533 transitions. [2020-08-18 20:27:59,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-18 20:27:59,509 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 156 [2020-08-18 20:27:59,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:27:59,546 INFO L225 Difference]: With dead ends: 12975 [2020-08-18 20:27:59,546 INFO L226 Difference]: Without dead ends: 6726 [2020-08-18 20:27:59,585 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2020-08-18 20:27:59,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6726 states. [2020-08-18 20:28:00,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6726 to 6174. [2020-08-18 20:28:00,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6174 states. [2020-08-18 20:28:00,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6174 states to 6174 states and 8297 transitions. [2020-08-18 20:28:00,168 INFO L78 Accepts]: Start accepts. Automaton has 6174 states and 8297 transitions. Word has length 156 [2020-08-18 20:28:00,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:28:00,169 INFO L479 AbstractCegarLoop]: Abstraction has 6174 states and 8297 transitions. [2020-08-18 20:28:00,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 20:28:00,169 INFO L276 IsEmpty]: Start isEmpty. Operand 6174 states and 8297 transitions. [2020-08-18 20:28:00,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-08-18 20:28:00,178 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:28:00,178 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:28:00,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-18 20:28:00,178 INFO L427 AbstractCegarLoop]: === Iteration 16 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:28:00,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:28:00,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1382123670, now seen corresponding path program 1 times [2020-08-18 20:28:00,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:28:00,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [42252136] [2020-08-18 20:28:00,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:28:00,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:28:00,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:28:00,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:28:00,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:28:00,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:28:00,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:28:00,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:28:00,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 20:28:00,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:28:00,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 20:28:00,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:28:00,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 20:28:00,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:28:00,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:28:00,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:28:00,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 20:28:00,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:28:00,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 20:28:00,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:28:00,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 20:28:00,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:28:00,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 20:28:00,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:28:00,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-18 20:28:00,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:28:00,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 20:28:00,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:28:00,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 20:28:00,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:28:00,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-18 20:28:00,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:28:00,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 20:28:00,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:28:00,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:28:00,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:28:00,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:28:00,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:28:00,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 20:28:00,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:28:00,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 20:28:00,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:28:00,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-08-18 20:28:00,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:28:00,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 20:28:00,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:28:00,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:28:00,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:28:00,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:28:00,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:28:00,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 20:28:00,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:28:00,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 20:28:00,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:28:00,706 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-08-18 20:28:00,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [42252136] [2020-08-18 20:28:00,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:28:00,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 20:28:00,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196145504] [2020-08-18 20:28:00,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 20:28:00,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:28:00,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 20:28:00,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-08-18 20:28:00,714 INFO L87 Difference]: Start difference. First operand 6174 states and 8297 transitions. Second operand 11 states. [2020-08-18 20:28:03,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:28:03,158 INFO L93 Difference]: Finished difference Result 12270 states and 16979 transitions. [2020-08-18 20:28:03,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-18 20:28:03,161 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 207 [2020-08-18 20:28:03,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:28:03,175 INFO L225 Difference]: With dead ends: 12270 [2020-08-18 20:28:03,176 INFO L226 Difference]: Without dead ends: 3143 [2020-08-18 20:28:03,199 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=158, Invalid=492, Unknown=0, NotChecked=0, Total=650 [2020-08-18 20:28:03,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3143 states. [2020-08-18 20:28:03,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3143 to 2950. [2020-08-18 20:28:03,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2950 states. [2020-08-18 20:28:03,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2950 states to 2950 states and 3443 transitions. [2020-08-18 20:28:03,444 INFO L78 Accepts]: Start accepts. Automaton has 2950 states and 3443 transitions. Word has length 207 [2020-08-18 20:28:03,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:28:03,445 INFO L479 AbstractCegarLoop]: Abstraction has 2950 states and 3443 transitions. [2020-08-18 20:28:03,445 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 20:28:03,445 INFO L276 IsEmpty]: Start isEmpty. Operand 2950 states and 3443 transitions. [2020-08-18 20:28:03,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-08-18 20:28:03,449 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:28:03,450 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:28:03,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-18 20:28:03,450 INFO L427 AbstractCegarLoop]: === Iteration 17 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:28:03,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:28:03,450 INFO L82 PathProgramCache]: Analyzing trace with hash 89354437, now seen corresponding path program 1 times [2020-08-18 20:28:03,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:28:03,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1745441616] [2020-08-18 20:28:03,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:28:03,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 20:28:03,477 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 20:28:03,477 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 20:28:03,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-18 20:28:03,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 08:28:03 BoogieIcfgContainer [2020-08-18 20:28:03,516 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 20:28:03,518 INFO L168 Benchmark]: Toolchain (without parser) took 36966.65 ms. Allocated memory was 139.5 MB in the beginning and 802.2 MB in the end (delta: 662.7 MB). Free memory was 102.6 MB in the beginning and 306.0 MB in the end (delta: -203.4 MB). Peak memory consumption was 459.3 MB. Max. memory is 7.1 GB. [2020-08-18 20:28:03,519 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.6 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-08-18 20:28:03,520 INFO L168 Benchmark]: CACSL2BoogieTranslator took 456.87 ms. Allocated memory was 139.5 MB in the beginning and 201.3 MB in the end (delta: 61.9 MB). Free memory was 102.2 MB in the beginning and 176.7 MB in the end (delta: -74.5 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2020-08-18 20:28:03,520 INFO L168 Benchmark]: Boogie Preprocessor took 48.73 ms. Allocated memory is still 201.3 MB. Free memory was 176.7 MB in the beginning and 174.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-08-18 20:28:03,521 INFO L168 Benchmark]: RCFGBuilder took 567.15 ms. Allocated memory is still 201.3 MB. Free memory was 174.8 MB in the beginning and 138.9 MB in the end (delta: 35.9 MB). Peak memory consumption was 35.9 MB. Max. memory is 7.1 GB. [2020-08-18 20:28:03,521 INFO L168 Benchmark]: TraceAbstraction took 35888.17 ms. Allocated memory was 201.3 MB in the beginning and 802.2 MB in the end (delta: 600.8 MB). Free memory was 137.9 MB in the beginning and 306.0 MB in the end (delta: -168.0 MB). Peak memory consumption was 432.8 MB. Max. memory is 7.1 GB. [2020-08-18 20:28:03,524 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.6 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 456.87 ms. Allocated memory was 139.5 MB in the beginning and 201.3 MB in the end (delta: 61.9 MB). Free memory was 102.2 MB in the beginning and 176.7 MB in the end (delta: -74.5 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 48.73 ms. Allocated memory is still 201.3 MB. Free memory was 176.7 MB in the beginning and 174.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 567.15 ms. Allocated memory is still 201.3 MB. Free memory was 174.8 MB in the beginning and 138.9 MB in the end (delta: 35.9 MB). Peak memory consumption was 35.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 35888.17 ms. Allocated memory was 201.3 MB in the beginning and 802.2 MB in the end (delta: 600.8 MB). Free memory was 137.9 MB in the beginning and 306.0 MB in the end (delta: -168.0 MB). Peak memory consumption was 432.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 11]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L15] int m_pc = 0; [L16] int t1_pc = 0; [L17] int t2_pc = 0; [L18] int m_st ; [L19] int t1_st ; [L20] int t2_st ; [L21] int m_i ; [L22] int t1_i ; [L23] int t2_i ; [L24] int M_E = 2; [L25] int T1_E = 2; [L26] int T2_E = 2; [L27] int E_1 = 2; [L28] int E_2 = 2; [L563] int __retres1 ; [L567] CALL init_model() [L477] m_i = 1 [L478] t1_i = 1 [L479] t2_i = 1 [L567] RET init_model() [L568] CALL start_simulation() [L504] int kernel_st ; [L505] int tmp ; [L506] int tmp___0 ; [L510] kernel_st = 0 [L511] FCALL update_channels() [L512] CALL init_threads() [L211] COND TRUE m_i == 1 [L212] m_st = 0 [L216] COND TRUE t1_i == 1 [L217] t1_st = 0 [L221] COND TRUE t2_i == 1 [L222] t2_st = 0 [L512] RET init_threads() [L513] CALL fire_delta_events() [L324] COND FALSE !(M_E == 0) [L329] COND FALSE !(T1_E == 0) [L334] COND FALSE !(T2_E == 0) [L339] COND FALSE !(E_1 == 0) [L344] COND FALSE !(E_2 == 0) [L513] RET fire_delta_events() [L514] CALL activate_threads() [L387] int tmp ; [L388] int tmp___0 ; [L389] int tmp___1 ; [L393] CALL, EXPR is_master_triggered() [L143] int __retres1 ; [L146] COND FALSE !(m_pc == 1) [L156] __retres1 = 0 [L158] return (__retres1); [L393] RET, EXPR is_master_triggered() [L393] tmp = is_master_triggered() [L395] COND FALSE !(\read(tmp)) [L401] CALL, EXPR is_transmit1_triggered() [L162] int __retres1 ; [L165] COND FALSE !(t1_pc == 1) [L175] __retres1 = 0 [L177] return (__retres1); [L401] RET, EXPR is_transmit1_triggered() [L401] tmp___0 = is_transmit1_triggered() [L403] COND FALSE !(\read(tmp___0)) [L409] CALL, EXPR is_transmit2_triggered() [L181] int __retres1 ; [L184] COND FALSE !(t2_pc == 1) [L194] __retres1 = 0 [L196] return (__retres1); [L409] RET, EXPR is_transmit2_triggered() [L409] tmp___1 = is_transmit2_triggered() [L411] COND FALSE !(\read(tmp___1)) [L514] RET activate_threads() [L515] CALL reset_delta_events() [L357] COND FALSE !(M_E == 1) [L362] COND FALSE !(T1_E == 1) [L367] COND FALSE !(T2_E == 1) [L372] COND FALSE !(E_1 == 1) [L377] COND FALSE !(E_2 == 1) [L515] RET reset_delta_events() [L518] COND TRUE 1 [L521] kernel_st = 1 [L522] CALL eval() [L257] int tmp ; [L261] COND TRUE 1 [L264] CALL, EXPR exists_runnable_thread() [L231] int __retres1 ; [L234] COND TRUE m_st == 0 [L235] __retres1 = 1 [L252] return (__retres1); [L264] RET, EXPR exists_runnable_thread() [L264] tmp = exists_runnable_thread() [L266] COND TRUE \read(tmp) [L271] COND TRUE m_st == 0 [L272] int tmp_ndt_1; [L273] tmp_ndt_1 = __VERIFIER_nondet_int() [L274] COND FALSE !(\read(tmp_ndt_1)) [L285] COND TRUE t1_st == 0 [L286] int tmp_ndt_2; [L287] tmp_ndt_2 = __VERIFIER_nondet_int() [L288] COND TRUE \read(tmp_ndt_2) [L290] t1_st = 1 [L291] CALL transmit1() [L78] COND TRUE t1_pc == 0 [L89] COND TRUE 1 [L91] t1_pc = 1 [L92] t1_st = 2 [L291] RET transmit1() [L299] COND TRUE t2_st == 0 [L300] int tmp_ndt_3; [L301] tmp_ndt_3 = __VERIFIER_nondet_int() [L302] COND TRUE \read(tmp_ndt_3) [L304] t2_st = 1 [L305] CALL transmit2() [L113] COND TRUE t2_pc == 0 [L124] COND TRUE 1 [L126] t2_pc = 1 [L127] t2_st = 2 [L305] RET transmit2() [L261] COND TRUE 1 [L264] CALL, EXPR exists_runnable_thread() [L231] int __retres1 ; [L234] COND TRUE m_st == 0 [L235] __retres1 = 1 [L252] return (__retres1); [L264] RET, EXPR exists_runnable_thread() [L264] tmp = exists_runnable_thread() [L266] COND TRUE \read(tmp) [L271] COND TRUE m_st == 0 [L272] int tmp_ndt_1; [L273] tmp_ndt_1 = __VERIFIER_nondet_int() [L274] COND TRUE \read(tmp_ndt_1) [L276] m_st = 1 [L277] CALL master() [L37] COND TRUE m_pc == 0 [L48] COND TRUE 1 [L51] E_1 = 1 [L52] CALL immediate_notify() [L425] CALL activate_threads() [L387] int tmp ; [L388] int tmp___0 ; [L389] int tmp___1 ; [L393] CALL, EXPR is_master_triggered() [L143] int __retres1 ; [L146] COND FALSE !(m_pc == 1) [L156] __retres1 = 0 [L158] return (__retres1); [L393] RET, EXPR is_master_triggered() [L393] tmp = is_master_triggered() [L395] COND FALSE !(\read(tmp)) [L401] CALL, EXPR is_transmit1_triggered() [L162] int __retres1 ; [L165] COND TRUE t1_pc == 1 [L166] COND TRUE E_1 == 1 [L167] __retres1 = 1 [L177] return (__retres1); [L401] RET, EXPR is_transmit1_triggered() [L401] tmp___0 = is_transmit1_triggered() [L403] COND TRUE \read(tmp___0) [L404] t1_st = 0 [L409] CALL, EXPR is_transmit2_triggered() [L181] int __retres1 ; [L184] COND TRUE t2_pc == 1 [L185] COND FALSE !(E_2 == 1) [L194] __retres1 = 0 [L196] return (__retres1); [L409] RET, EXPR is_transmit2_triggered() [L409] tmp___1 = is_transmit2_triggered() [L411] COND FALSE !(\read(tmp___1)) [L425] RET activate_threads() [L52] RET immediate_notify() [L53] E_1 = 2 [L56] COND TRUE 1 [L58] m_pc = 1 [L59] m_st = 2 [L277] RET master() [L285] COND TRUE t1_st == 0 [L286] int tmp_ndt_2; [L287] tmp_ndt_2 = __VERIFIER_nondet_int() [L288] COND TRUE \read(tmp_ndt_2) [L290] t1_st = 1 [L291] CALL transmit1() [L78] COND FALSE !(t1_pc == 0) [L81] COND TRUE t1_pc == 1 [L97] E_2 = 1 [L98] CALL immediate_notify() [L425] CALL activate_threads() [L387] int tmp ; [L388] int tmp___0 ; [L389] int tmp___1 ; [L393] CALL, EXPR is_master_triggered() [L143] int __retres1 ; [L146] COND TRUE m_pc == 1 [L147] COND FALSE !(M_E == 1) [L156] __retres1 = 0 [L158] return (__retres1); [L393] RET, EXPR is_master_triggered() [L393] tmp = is_master_triggered() [L395] COND FALSE !(\read(tmp)) [L401] CALL, EXPR is_transmit1_triggered() [L162] int __retres1 ; [L165] COND TRUE t1_pc == 1 [L166] COND FALSE !(E_1 == 1) [L175] __retres1 = 0 [L177] return (__retres1); [L401] RET, EXPR is_transmit1_triggered() [L401] tmp___0 = is_transmit1_triggered() [L403] COND FALSE !(\read(tmp___0)) [L409] CALL, EXPR is_transmit2_triggered() [L181] int __retres1 ; [L184] COND TRUE t2_pc == 1 [L185] COND TRUE E_2 == 1 [L186] __retres1 = 1 [L196] return (__retres1); [L409] RET, EXPR is_transmit2_triggered() [L409] tmp___1 = is_transmit2_triggered() [L411] COND TRUE \read(tmp___1) [L412] t2_st = 0 [L425] RET activate_threads() [L98] RET immediate_notify() [L99] E_2 = 2 [L89] COND TRUE 1 [L91] t1_pc = 1 [L92] t1_st = 2 [L291] RET transmit1() [L299] COND TRUE t2_st == 0 [L300] int tmp_ndt_3; [L301] tmp_ndt_3 = __VERIFIER_nondet_int() [L302] COND TRUE \read(tmp_ndt_3) [L304] t2_st = 1 [L305] CALL transmit2() [L113] COND FALSE !(t2_pc == 0) [L116] COND TRUE t2_pc == 1 [L132] CALL error() [L11] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 23 procedures, 169 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 35.7s, OverallIterations: 17, TraceHistogramMax: 3, AutomataDifference: 28.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2606 SDtfs, 11528 SDslu, 735 SDs, 0 SdLazy, 15860 SolverSat, 5835 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 756 GetRequests, 488 SyntacticMatches, 0 SemanticMatches, 268 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 797 ImplicationChecksByTransitivity, 4.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6174occurred in iteration=15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.7s AutomataMinimizationTime, 16 MinimizatonAttempts, 3916 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 1939 NumberOfCodeBlocks, 1939 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 1715 ConstructedInterpolants, 0 QuantifiedInterpolants, 487945 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 237/237 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...