/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.BOUNDED-10.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 13:28:22,132 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 13:28:22,135 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 13:28:22,159 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 13:28:22,159 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 13:28:22,160 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 13:28:22,162 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 13:28:22,164 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 13:28:22,165 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 13:28:22,166 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 13:28:22,167 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 13:28:22,168 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 13:28:22,169 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 13:28:22,170 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 13:28:22,171 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 13:28:22,172 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 13:28:22,173 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 13:28:22,174 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 13:28:22,175 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 13:28:22,178 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 13:28:22,180 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 13:28:22,181 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 13:28:22,182 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 13:28:22,183 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 13:28:22,185 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 13:28:22,186 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 13:28:22,186 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 13:28:22,187 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 13:28:22,187 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 13:28:22,188 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 13:28:22,189 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 13:28:22,189 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 13:28:22,190 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 13:28:22,192 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 13:28:22,196 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 13:28:22,196 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 13:28:22,197 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 13:28:22,197 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 13:28:22,197 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 13:28:22,198 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 13:28:22,200 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 13:28:22,201 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 [2020-08-21 13:28:22,250 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 13:28:22,250 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 13:28:22,255 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 13:28:22,255 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 13:28:22,255 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 13:28:22,255 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 13:28:22,256 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 13:28:22,256 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 13:28:22,256 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 13:28:22,256 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 13:28:22,256 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 13:28:22,257 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 13:28:22,257 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 13:28:22,258 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 13:28:22,258 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 13:28:22,258 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 13:28:22,258 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 13:28:22,258 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 13:28:22,259 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 13:28:22,259 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 13:28:22,259 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 13:28:22,259 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 13:28:22,259 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 13:28:22,260 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 13:28:22,261 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 13:28:22,261 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 13:28:22,261 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 13:28:22,261 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 13:28:22,261 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 13:28:22,262 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 -> false [2020-08-21 13:28:22,594 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 13:28:22,612 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 13:28:22,617 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 13:28:22,619 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 13:28:22,620 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 13:28:22,621 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.BOUNDED-10.pals.c [2020-08-21 13:28:22,697 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8b95786b9/285f3361738b47dab9248a2e230e1bcf/FLAG4316bc5de [2020-08-21 13:28:23,284 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 13:28:23,285 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.BOUNDED-10.pals.c [2020-08-21 13:28:23,297 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8b95786b9/285f3361738b47dab9248a2e230e1bcf/FLAG4316bc5de [2020-08-21 13:28:23,536 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8b95786b9/285f3361738b47dab9248a2e230e1bcf [2020-08-21 13:28:23,549 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 13:28:23,551 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 13:28:23,553 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 13:28:23,553 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 13:28:23,557 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 13:28:23,558 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:28:23" (1/1) ... [2020-08-21 13:28:23,562 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@272573d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:28:23, skipping insertion in model container [2020-08-21 13:28:23,562 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:28:23" (1/1) ... [2020-08-21 13:28:23,571 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 13:28:23,630 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 13:28:23,904 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:28:23,913 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 13:28:24,086 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:28:24,116 INFO L208 MainTranslator]: Completed translation [2020-08-21 13:28:24,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:28:24 WrapperNode [2020-08-21 13:28:24,117 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 13:28:24,118 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 13:28:24,118 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 13:28:24,118 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 13:28:24,128 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:28:24" (1/1) ... [2020-08-21 13:28:24,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:28:24" (1/1) ... [2020-08-21 13:28:24,142 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:28:24" (1/1) ... [2020-08-21 13:28:24,142 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:28:24" (1/1) ... [2020-08-21 13:28:24,161 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:28:24" (1/1) ... [2020-08-21 13:28:24,176 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:28:24" (1/1) ... [2020-08-21 13:28:24,180 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:28:24" (1/1) ... [2020-08-21 13:28:24,187 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 13:28:24,187 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 13:28:24,188 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 13:28:24,188 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 13:28:24,188 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:28:24" (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 [2020-08-21 13:28:24,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 13:28:24,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 13:28:24,260 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 13:28:24,261 INFO L138 BoogieDeclarations]: Found implementation of procedure write_side1_failed_history [2020-08-21 13:28:24,261 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2020-08-21 13:28:24,261 INFO L138 BoogieDeclarations]: Found implementation of procedure write_side2_failed_history [2020-08-21 13:28:24,261 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2020-08-21 13:28:24,261 INFO L138 BoogieDeclarations]: Found implementation of procedure write_active_side_history [2020-08-21 13:28:24,262 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2020-08-21 13:28:24,262 INFO L138 BoogieDeclarations]: Found implementation of procedure write_manual_selection_history [2020-08-21 13:28:24,262 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2020-08-21 13:28:24,262 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-08-21 13:28:24,263 INFO L138 BoogieDeclarations]: Found implementation of procedure flip_the_side [2020-08-21 13:28:24,263 INFO L138 BoogieDeclarations]: Found implementation of procedure Console_task_each_pals_period [2020-08-21 13:28:24,263 INFO L138 BoogieDeclarations]: Found implementation of procedure Side1_activestandby_task_each_pals_period [2020-08-21 13:28:24,263 INFO L138 BoogieDeclarations]: Found implementation of procedure Side2_activestandby_task_each_pals_period [2020-08-21 13:28:24,264 INFO L138 BoogieDeclarations]: Found implementation of procedure Pendulum_prism_task_each_pals_period [2020-08-21 13:28:24,264 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-08-21 13:28:24,264 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 13:28:24,264 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-08-21 13:28:24,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 13:28:24,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-21 13:28:24,265 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-21 13:28:24,265 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-08-21 13:28:24,265 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-08-21 13:28:24,266 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-08-21 13:28:24,266 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 13:28:24,266 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 13:28:24,267 INFO L130 BoogieDeclarations]: Found specification of procedure write_side1_failed_history [2020-08-21 13:28:24,267 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2020-08-21 13:28:24,267 INFO L130 BoogieDeclarations]: Found specification of procedure write_side2_failed_history [2020-08-21 13:28:24,267 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2020-08-21 13:28:24,267 INFO L130 BoogieDeclarations]: Found specification of procedure write_active_side_history [2020-08-21 13:28:24,268 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2020-08-21 13:28:24,268 INFO L130 BoogieDeclarations]: Found specification of procedure write_manual_selection_history [2020-08-21 13:28:24,268 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2020-08-21 13:28:24,268 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-08-21 13:28:24,268 INFO L130 BoogieDeclarations]: Found specification of procedure flip_the_side [2020-08-21 13:28:24,268 INFO L130 BoogieDeclarations]: Found specification of procedure Console_task_each_pals_period [2020-08-21 13:28:24,268 INFO L130 BoogieDeclarations]: Found specification of procedure Side1_activestandby_task_each_pals_period [2020-08-21 13:28:24,268 INFO L130 BoogieDeclarations]: Found specification of procedure Side2_activestandby_task_each_pals_period [2020-08-21 13:28:24,268 INFO L130 BoogieDeclarations]: Found specification of procedure Pendulum_prism_task_each_pals_period [2020-08-21 13:28:24,269 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-08-21 13:28:24,269 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 13:28:24,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 13:28:24,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 13:28:25,070 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 13:28:25,070 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-21 13:28:25,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:28:25 BoogieIcfgContainer [2020-08-21 13:28:25,084 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 13:28:25,086 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 13:28:25,086 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 13:28:25,090 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 13:28:25,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 01:28:23" (1/3) ... [2020-08-21 13:28:25,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a626055 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:28:25, skipping insertion in model container [2020-08-21 13:28:25,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:28:24" (2/3) ... [2020-08-21 13:28:25,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a626055 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:28:25, skipping insertion in model container [2020-08-21 13:28:25,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:28:25" (3/3) ... [2020-08-21 13:28:25,097 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.1.ufo.BOUNDED-10.pals.c [2020-08-21 13:28:25,108 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 13:28:25,120 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 13:28:25,137 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 13:28:25,171 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 13:28:25,172 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 13:28:25,172 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 13:28:25,172 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 13:28:25,172 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 13:28:25,173 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 13:28:25,173 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 13:28:25,173 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 13:28:25,207 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states. [2020-08-21 13:28:25,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-08-21 13:28:25,226 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:28:25,228 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] [2020-08-21 13:28:25,228 INFO L427 AbstractCegarLoop]: === Iteration 1 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:28:25,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:28:25,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1541207534, now seen corresponding path program 1 times [2020-08-21 13:28:25,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:28:25,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [910206354] [2020-08-21 13:28:25,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:28:25,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:25,876 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-21 13:28:25,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:28:25,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:25,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:28:25,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:25,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 13:28:25,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:25,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:28:25,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:25,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:28:25,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:26,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 13:28:26,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:26,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:28:26,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:26,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 13:28:26,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:26,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:28:26,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:26,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:28:26,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [910206354] [2020-08-21 13:28:26,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:28:26,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 13:28:26,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812078345] [2020-08-21 13:28:26,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 13:28:26,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:28:26,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 13:28:26,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-08-21 13:28:26,151 INFO L87 Difference]: Start difference. First operand 243 states. Second operand 9 states. [2020-08-21 13:28:27,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:28:27,781 INFO L93 Difference]: Finished difference Result 463 states and 711 transitions. [2020-08-21 13:28:27,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 13:28:27,788 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 71 [2020-08-21 13:28:27,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:28:27,813 INFO L225 Difference]: With dead ends: 463 [2020-08-21 13:28:27,813 INFO L226 Difference]: Without dead ends: 238 [2020-08-21 13:28:27,821 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2020-08-21 13:28:27,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-08-21 13:28:27,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2020-08-21 13:28:27,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-08-21 13:28:27,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 343 transitions. [2020-08-21 13:28:27,910 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 343 transitions. Word has length 71 [2020-08-21 13:28:27,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:28:27,910 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 343 transitions. [2020-08-21 13:28:27,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 13:28:27,911 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 343 transitions. [2020-08-21 13:28:27,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-08-21 13:28:27,914 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:28:27,915 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] [2020-08-21 13:28:27,915 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 13:28:27,915 INFO L427 AbstractCegarLoop]: === Iteration 2 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:28:27,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:28:27,916 INFO L82 PathProgramCache]: Analyzing trace with hash -508602450, now seen corresponding path program 1 times [2020-08-21 13:28:27,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:28:27,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1794180280] [2020-08-21 13:28:27,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:28:27,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:28,152 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-21 13:28:28,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:28:28,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:28,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:28:28,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:28,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 13:28:28,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:28,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:28:28,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:28,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:28:28,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:28,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 13:28:28,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:28,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:28:28,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:28,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 13:28:28,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:28,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:28:28,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:28,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:28:28,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1794180280] [2020-08-21 13:28:28,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:28:28,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-21 13:28:28,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692350430] [2020-08-21 13:28:28,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-21 13:28:28,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:28:28,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-21 13:28:28,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-08-21 13:28:28,430 INFO L87 Difference]: Start difference. First operand 238 states and 343 transitions. Second operand 14 states. [2020-08-21 13:28:28,613 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-21 13:28:28,841 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-21 13:28:29,002 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-21 13:28:31,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:28:31,448 INFO L93 Difference]: Finished difference Result 467 states and 671 transitions. [2020-08-21 13:28:31,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 13:28:31,448 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 71 [2020-08-21 13:28:31,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:28:31,452 INFO L225 Difference]: With dead ends: 467 [2020-08-21 13:28:31,452 INFO L226 Difference]: Without dead ends: 248 [2020-08-21 13:28:31,457 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-08-21 13:28:31,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-08-21 13:28:31,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 238. [2020-08-21 13:28:31,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-08-21 13:28:31,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 331 transitions. [2020-08-21 13:28:31,501 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 331 transitions. Word has length 71 [2020-08-21 13:28:31,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:28:31,502 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 331 transitions. [2020-08-21 13:28:31,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-21 13:28:31,502 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 331 transitions. [2020-08-21 13:28:31,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-21 13:28:31,505 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:28:31,505 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] [2020-08-21 13:28:31,506 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 13:28:31,506 INFO L427 AbstractCegarLoop]: === Iteration 3 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:28:31,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:28:31,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1489036951, now seen corresponding path program 1 times [2020-08-21 13:28:31,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:28:31,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [608598970] [2020-08-21 13:28:31,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:28:31,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:31,726 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-21 13:28:31,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:28:31,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:31,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:28:31,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:31,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:28:31,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:31,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 13:28:31,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:31,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:28:31,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:31,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 13:28:31,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:31,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:28:31,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:31,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 13:28:31,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:31,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:28:31,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:31,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:28:31,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [608598970] [2020-08-21 13:28:31,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:28:31,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 13:28:31,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292634618] [2020-08-21 13:28:31,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 13:28:31,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:28:31,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 13:28:31,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-08-21 13:28:31,891 INFO L87 Difference]: Start difference. First operand 238 states and 331 transitions. Second operand 11 states. [2020-08-21 13:28:32,815 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-21 13:28:32,945 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-21 13:28:33,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:28:33,983 INFO L93 Difference]: Finished difference Result 456 states and 647 transitions. [2020-08-21 13:28:33,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 13:28:33,984 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 82 [2020-08-21 13:28:33,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:28:33,987 INFO L225 Difference]: With dead ends: 456 [2020-08-21 13:28:33,987 INFO L226 Difference]: Without dead ends: 242 [2020-08-21 13:28:33,989 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=115, Invalid=227, Unknown=0, NotChecked=0, Total=342 [2020-08-21 13:28:33,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-08-21 13:28:34,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2020-08-21 13:28:34,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-08-21 13:28:34,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 334 transitions. [2020-08-21 13:28:34,021 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 334 transitions. Word has length 82 [2020-08-21 13:28:34,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:28:34,022 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 334 transitions. [2020-08-21 13:28:34,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 13:28:34,022 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 334 transitions. [2020-08-21 13:28:34,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-08-21 13:28:34,025 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:28:34,025 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:28:34,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 13:28:34,025 INFO L427 AbstractCegarLoop]: === Iteration 4 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:28:34,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:28:34,026 INFO L82 PathProgramCache]: Analyzing trace with hash -2124611218, now seen corresponding path program 1 times [2020-08-21 13:28:34,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:28:34,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1154694862] [2020-08-21 13:28:34,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:28:34,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:34,235 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-21 13:28:34,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:28:34,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:34,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:28:34,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:34,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:28:34,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:34,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 13:28:34,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:34,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:28:34,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:34,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 13:28:34,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:34,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:28:34,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:34,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 13:28:34,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:34,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:28:34,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:34,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 13:28:34,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:34,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:28:34,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:34,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-21 13:28:34,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:34,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-21 13:28:34,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:34,544 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-21 13:28:34,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1154694862] [2020-08-21 13:28:34,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:28:34,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-08-21 13:28:34,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398602691] [2020-08-21 13:28:34,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 13:28:34,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:28:34,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 13:28:34,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-08-21 13:28:34,549 INFO L87 Difference]: Start difference. First operand 242 states and 334 transitions. Second operand 16 states. [2020-08-21 13:28:34,727 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-21 13:28:35,969 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-08-21 13:28:36,548 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-21 13:28:38,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:28:38,245 INFO L93 Difference]: Finished difference Result 551 states and 760 transitions. [2020-08-21 13:28:38,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-21 13:28:38,245 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 104 [2020-08-21 13:28:38,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:28:38,250 INFO L225 Difference]: With dead ends: 551 [2020-08-21 13:28:38,250 INFO L226 Difference]: Without dead ends: 333 [2020-08-21 13:28:38,252 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=299, Invalid=891, Unknown=0, NotChecked=0, Total=1190 [2020-08-21 13:28:38,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2020-08-21 13:28:38,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 332. [2020-08-21 13:28:38,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2020-08-21 13:28:38,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 449 transitions. [2020-08-21 13:28:38,291 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 449 transitions. Word has length 104 [2020-08-21 13:28:38,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:28:38,292 INFO L479 AbstractCegarLoop]: Abstraction has 332 states and 449 transitions. [2020-08-21 13:28:38,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 13:28:38,292 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 449 transitions. [2020-08-21 13:28:38,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-08-21 13:28:38,295 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:28:38,295 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:28:38,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 13:28:38,296 INFO L427 AbstractCegarLoop]: === Iteration 5 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:28:38,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:28:38,296 INFO L82 PathProgramCache]: Analyzing trace with hash 1802435784, now seen corresponding path program 1 times [2020-08-21 13:28:38,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:28:38,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [314678749] [2020-08-21 13:28:38,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:28:38,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:38,502 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-21 13:28:38,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:28:38,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:38,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:28:38,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:38,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:28:38,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:38,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 13:28:38,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:38,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:28:38,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:38,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 13:28:38,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:38,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:28:38,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:38,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 13:28:38,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:38,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:28:38,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:38,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 13:28:38,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:38,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:28:38,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:38,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:28:38,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:38,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-21 13:28:38,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:38,792 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-21 13:28:38,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [314678749] [2020-08-21 13:28:38,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:28:38,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-08-21 13:28:38,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40534934] [2020-08-21 13:28:38,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 13:28:38,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:28:38,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 13:28:38,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-08-21 13:28:38,795 INFO L87 Difference]: Start difference. First operand 332 states and 449 transitions. Second operand 16 states. [2020-08-21 13:28:38,999 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-21 13:28:40,665 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-21 13:28:42,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:28:42,428 INFO L93 Difference]: Finished difference Result 557 states and 768 transitions. [2020-08-21 13:28:42,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-21 13:28:42,429 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 105 [2020-08-21 13:28:42,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:28:42,432 INFO L225 Difference]: With dead ends: 557 [2020-08-21 13:28:42,433 INFO L226 Difference]: Without dead ends: 336 [2020-08-21 13:28:42,434 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=299, Invalid=891, Unknown=0, NotChecked=0, Total=1190 [2020-08-21 13:28:42,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2020-08-21 13:28:42,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 332. [2020-08-21 13:28:42,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2020-08-21 13:28:42,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 449 transitions. [2020-08-21 13:28:42,491 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 449 transitions. Word has length 105 [2020-08-21 13:28:42,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:28:42,492 INFO L479 AbstractCegarLoop]: Abstraction has 332 states and 449 transitions. [2020-08-21 13:28:42,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 13:28:42,492 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 449 transitions. [2020-08-21 13:28:42,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-08-21 13:28:42,494 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:28:42,494 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:28:42,495 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 13:28:42,495 INFO L427 AbstractCegarLoop]: === Iteration 6 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:28:42,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:28:42,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1848316150, now seen corresponding path program 1 times [2020-08-21 13:28:42,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:28:42,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1089397755] [2020-08-21 13:28:42,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:28:42,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:42,682 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-21 13:28:42,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:28:42,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:42,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:28:42,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:42,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:28:42,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:42,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 13:28:42,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:42,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:28:42,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:42,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 13:28:42,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:42,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:28:42,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:42,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 13:28:42,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:42,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:28:42,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:42,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 13:28:42,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:42,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:28:42,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:42,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 13:28:42,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:42,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-21 13:28:42,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:42,985 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-21 13:28:42,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1089397755] [2020-08-21 13:28:42,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:28:42,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 13:28:42,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471389869] [2020-08-21 13:28:42,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 13:28:42,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:28:42,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 13:28:42,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-08-21 13:28:42,991 INFO L87 Difference]: Start difference. First operand 332 states and 449 transitions. Second operand 12 states. [2020-08-21 13:28:43,695 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-21 13:28:46,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:28:46,424 INFO L93 Difference]: Finished difference Result 791 states and 1096 transitions. [2020-08-21 13:28:46,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-21 13:28:46,425 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 107 [2020-08-21 13:28:46,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:28:46,432 INFO L225 Difference]: With dead ends: 791 [2020-08-21 13:28:46,432 INFO L226 Difference]: Without dead ends: 570 [2020-08-21 13:28:46,434 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2020-08-21 13:28:46,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2020-08-21 13:28:46,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 552. [2020-08-21 13:28:46,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 552 states. [2020-08-21 13:28:46,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 760 transitions. [2020-08-21 13:28:46,504 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 760 transitions. Word has length 107 [2020-08-21 13:28:46,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:28:46,504 INFO L479 AbstractCegarLoop]: Abstraction has 552 states and 760 transitions. [2020-08-21 13:28:46,504 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 13:28:46,505 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 760 transitions. [2020-08-21 13:28:46,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-08-21 13:28:46,506 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:28:46,507 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:28:46,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 13:28:46,507 INFO L427 AbstractCegarLoop]: === Iteration 7 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:28:46,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:28:46,508 INFO L82 PathProgramCache]: Analyzing trace with hash -723997746, now seen corresponding path program 1 times [2020-08-21 13:28:46,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:28:46,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [514788762] [2020-08-21 13:28:46,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:28:46,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:46,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:28:46,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:46,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:28:46,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:46,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:28:46,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:46,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 13:28:46,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:46,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:28:46,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:46,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 13:28:46,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:46,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:28:46,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:46,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-21 13:28:46,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:46,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:28:46,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:46,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-21 13:28:46,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:46,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:28:46,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:46,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 13:28:46,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:46,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-21 13:28:46,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:46,908 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-21 13:28:46,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [514788762] [2020-08-21 13:28:46,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:28:46,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 13:28:46,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168793984] [2020-08-21 13:28:46,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 13:28:46,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:28:46,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 13:28:46,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-08-21 13:28:46,912 INFO L87 Difference]: Start difference. First operand 552 states and 760 transitions. Second operand 12 states. [2020-08-21 13:28:47,067 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-21 13:28:50,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:28:50,315 INFO L93 Difference]: Finished difference Result 968 states and 1350 transitions. [2020-08-21 13:28:50,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-21 13:28:50,315 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 109 [2020-08-21 13:28:50,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:28:50,320 INFO L225 Difference]: With dead ends: 968 [2020-08-21 13:28:50,320 INFO L226 Difference]: Without dead ends: 570 [2020-08-21 13:28:50,322 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2020-08-21 13:28:50,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2020-08-21 13:28:50,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 552. [2020-08-21 13:28:50,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 552 states. [2020-08-21 13:28:50,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 758 transitions. [2020-08-21 13:28:50,381 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 758 transitions. Word has length 109 [2020-08-21 13:28:50,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:28:50,381 INFO L479 AbstractCegarLoop]: Abstraction has 552 states and 758 transitions. [2020-08-21 13:28:50,381 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 13:28:50,381 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 758 transitions. [2020-08-21 13:28:50,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-21 13:28:50,383 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:28:50,383 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:28:50,383 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 13:28:50,384 INFO L427 AbstractCegarLoop]: === Iteration 8 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:28:50,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:28:50,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1067489879, now seen corresponding path program 1 times [2020-08-21 13:28:50,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:28:50,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2003847969] [2020-08-21 13:28:50,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:28:50,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:50,553 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-21 13:28:50,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:28:50,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:50,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:28:50,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:50,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:28:50,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:50,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 13:28:50,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:50,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:28:50,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:50,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 13:28:50,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:50,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:28:50,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:50,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 13:28:50,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:50,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:28:50,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:50,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 13:28:50,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:50,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:28:50,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:50,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 13:28:50,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:50,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-21 13:28:50,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:50,772 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-21 13:28:50,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2003847969] [2020-08-21 13:28:50,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:28:50,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 13:28:50,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374370272] [2020-08-21 13:28:50,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 13:28:50,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:28:50,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 13:28:50,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-08-21 13:28:50,774 INFO L87 Difference]: Start difference. First operand 552 states and 758 transitions. Second operand 12 states. [2020-08-21 13:28:51,820 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-21 13:28:54,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:28:54,336 INFO L93 Difference]: Finished difference Result 1311 states and 1841 transitions. [2020-08-21 13:28:54,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-21 13:28:54,338 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 108 [2020-08-21 13:28:54,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:28:54,344 INFO L225 Difference]: With dead ends: 1311 [2020-08-21 13:28:54,345 INFO L226 Difference]: Without dead ends: 913 [2020-08-21 13:28:54,347 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2020-08-21 13:28:54,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2020-08-21 13:28:54,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 907. [2020-08-21 13:28:54,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 907 states. [2020-08-21 13:28:54,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 1263 transitions. [2020-08-21 13:28:54,453 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 1263 transitions. Word has length 108 [2020-08-21 13:28:54,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:28:54,454 INFO L479 AbstractCegarLoop]: Abstraction has 907 states and 1263 transitions. [2020-08-21 13:28:54,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 13:28:54,454 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 1263 transitions. [2020-08-21 13:28:54,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-21 13:28:54,456 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:28:54,456 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:28:54,457 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 13:28:54,457 INFO L427 AbstractCegarLoop]: === Iteration 9 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:28:54,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:28:54,457 INFO L82 PathProgramCache]: Analyzing trace with hash -212373799, now seen corresponding path program 1 times [2020-08-21 13:28:54,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:28:54,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [961382374] [2020-08-21 13:28:54,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:28:54,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:54,700 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-21 13:28:54,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:28:54,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:54,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:28:54,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:54,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:28:54,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:54,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 13:28:54,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:54,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:28:54,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:54,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 13:28:54,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:54,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:28:54,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:54,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 13:28:54,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:54,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:28:54,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:54,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 13:28:54,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:54,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:28:54,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:54,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 13:28:54,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:54,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-21 13:28:54,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:54,944 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-21 13:28:54,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [961382374] [2020-08-21 13:28:54,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:28:54,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-21 13:28:54,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737398558] [2020-08-21 13:28:54,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 13:28:54,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:28:54,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 13:28:54,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-21 13:28:54,948 INFO L87 Difference]: Start difference. First operand 907 states and 1263 transitions. Second operand 13 states. [2020-08-21 13:28:56,374 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-21 13:28:56,504 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-21 13:28:57,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:28:57,383 INFO L93 Difference]: Finished difference Result 1662 states and 2348 transitions. [2020-08-21 13:28:57,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 13:28:57,388 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 108 [2020-08-21 13:28:57,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:28:57,393 INFO L225 Difference]: With dead ends: 1662 [2020-08-21 13:28:57,394 INFO L226 Difference]: Without dead ends: 927 [2020-08-21 13:28:57,398 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2020-08-21 13:28:57,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2020-08-21 13:28:57,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 927. [2020-08-21 13:28:57,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 927 states. [2020-08-21 13:28:57,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 1279 transitions. [2020-08-21 13:28:57,497 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 1279 transitions. Word has length 108 [2020-08-21 13:28:57,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:28:57,498 INFO L479 AbstractCegarLoop]: Abstraction has 927 states and 1279 transitions. [2020-08-21 13:28:57,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 13:28:57,498 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 1279 transitions. [2020-08-21 13:28:57,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-08-21 13:28:57,500 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:28:57,500 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:28:57,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 13:28:57,501 INFO L427 AbstractCegarLoop]: === Iteration 10 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:28:57,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:28:57,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1747753163, now seen corresponding path program 1 times [2020-08-21 13:28:57,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:28:57,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1214368628] [2020-08-21 13:28:57,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:28:57,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:57,703 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-21 13:28:57,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:28:57,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:57,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:28:57,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:57,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:28:57,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:57,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 13:28:57,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:57,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:28:57,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:57,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 13:28:57,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:57,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:28:57,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:57,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 13:28:57,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:57,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:28:57,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:57,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 13:28:57,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:57,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:28:57,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:57,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 13:28:57,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:57,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-21 13:28:57,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:57,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-21 13:28:57,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:28:57,998 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-21 13:28:57,999 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1214368628] [2020-08-21 13:28:57,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:28:58,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-21 13:28:58,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329160776] [2020-08-21 13:28:58,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 13:28:58,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:28:58,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 13:28:58,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-21 13:28:58,002 INFO L87 Difference]: Start difference. First operand 927 states and 1279 transitions. Second operand 13 states. [2020-08-21 13:28:59,403 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-21 13:28:59,582 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-21 13:29:00,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:29:00,435 INFO L93 Difference]: Finished difference Result 1702 states and 2392 transitions. [2020-08-21 13:29:00,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 13:29:00,435 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 116 [2020-08-21 13:29:00,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:29:00,442 INFO L225 Difference]: With dead ends: 1702 [2020-08-21 13:29:00,442 INFO L226 Difference]: Without dead ends: 947 [2020-08-21 13:29:00,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2020-08-21 13:29:00,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2020-08-21 13:29:00,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 947. [2020-08-21 13:29:00,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 947 states. [2020-08-21 13:29:00,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 947 states to 947 states and 1295 transitions. [2020-08-21 13:29:00,543 INFO L78 Accepts]: Start accepts. Automaton has 947 states and 1295 transitions. Word has length 116 [2020-08-21 13:29:00,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:29:00,544 INFO L479 AbstractCegarLoop]: Abstraction has 947 states and 1295 transitions. [2020-08-21 13:29:00,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 13:29:00,544 INFO L276 IsEmpty]: Start isEmpty. Operand 947 states and 1295 transitions. [2020-08-21 13:29:00,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-08-21 13:29:00,546 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:29:00,547 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:29:00,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 13:29:00,547 INFO L427 AbstractCegarLoop]: === Iteration 11 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:29:00,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:29:00,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1289634625, now seen corresponding path program 1 times [2020-08-21 13:29:00,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:29:00,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [982742061] [2020-08-21 13:29:00,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:29:00,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:00,758 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-21 13:29:00,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:29:00,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:00,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:29:00,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:00,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:29:00,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:00,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 13:29:00,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:00,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:29:00,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:00,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 13:29:00,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:00,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:29:00,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:00,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 13:29:00,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:00,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:29:00,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:00,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 13:29:00,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:00,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:29:00,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:00,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 13:29:00,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:00,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-21 13:29:00,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:00,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-21 13:29:00,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:00,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-21 13:29:00,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:00,984 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-21 13:29:00,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [982742061] [2020-08-21 13:29:00,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:29:00,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-21 13:29:00,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676448003] [2020-08-21 13:29:00,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 13:29:00,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:29:00,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 13:29:00,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-21 13:29:00,987 INFO L87 Difference]: Start difference. First operand 947 states and 1295 transitions. Second operand 13 states. [2020-08-21 13:29:02,436 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-21 13:29:02,570 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-21 13:29:03,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:29:03,270 INFO L93 Difference]: Finished difference Result 1738 states and 2408 transitions. [2020-08-21 13:29:03,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 13:29:03,271 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 124 [2020-08-21 13:29:03,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:29:03,277 INFO L225 Difference]: With dead ends: 1738 [2020-08-21 13:29:03,278 INFO L226 Difference]: Without dead ends: 963 [2020-08-21 13:29:03,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2020-08-21 13:29:03,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2020-08-21 13:29:03,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 963. [2020-08-21 13:29:03,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 963 states. [2020-08-21 13:29:03,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1307 transitions. [2020-08-21 13:29:03,396 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1307 transitions. Word has length 124 [2020-08-21 13:29:03,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:29:03,396 INFO L479 AbstractCegarLoop]: Abstraction has 963 states and 1307 transitions. [2020-08-21 13:29:03,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 13:29:03,397 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1307 transitions. [2020-08-21 13:29:03,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-08-21 13:29:03,399 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:29:03,399 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:29:03,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 13:29:03,400 INFO L427 AbstractCegarLoop]: === Iteration 12 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:29:03,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:29:03,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1471497757, now seen corresponding path program 1 times [2020-08-21 13:29:03,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:29:03,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1607812287] [2020-08-21 13:29:03,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:29:03,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:03,626 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-21 13:29:03,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:29:03,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:03,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:29:03,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:03,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:29:03,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:03,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 13:29:03,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:03,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:29:03,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:03,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 13:29:03,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:03,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:29:03,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:03,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 13:29:03,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:03,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:29:03,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:03,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 13:29:03,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:03,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:29:03,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:03,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 13:29:03,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:03,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-21 13:29:03,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:03,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-21 13:29:03,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:03,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-21 13:29:03,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:03,952 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-21 13:29:03,952 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1607812287] [2020-08-21 13:29:03,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:29:03,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-08-21 13:29:03,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332224309] [2020-08-21 13:29:03,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-21 13:29:03,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:29:03,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-21 13:29:03,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2020-08-21 13:29:03,954 INFO L87 Difference]: Start difference. First operand 963 states and 1307 transitions. Second operand 18 states. [2020-08-21 13:29:04,309 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 133 [2020-08-21 13:29:04,534 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-08-21 13:29:05,097 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-08-21 13:29:06,530 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-21 13:29:06,676 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-21 13:29:06,827 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-21 13:29:08,388 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-08-21 13:29:08,575 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-21 13:29:10,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:29:10,545 INFO L93 Difference]: Finished difference Result 2594 states and 3626 transitions. [2020-08-21 13:29:10,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-21 13:29:10,546 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 124 [2020-08-21 13:29:10,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:29:10,556 INFO L225 Difference]: With dead ends: 2594 [2020-08-21 13:29:10,556 INFO L226 Difference]: Without dead ends: 1791 [2020-08-21 13:29:10,560 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=410, Invalid=1230, Unknown=0, NotChecked=0, Total=1640 [2020-08-21 13:29:10,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1791 states. [2020-08-21 13:29:10,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1791 to 1549. [2020-08-21 13:29:10,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1549 states. [2020-08-21 13:29:10,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1549 states to 1549 states and 2123 transitions. [2020-08-21 13:29:10,781 INFO L78 Accepts]: Start accepts. Automaton has 1549 states and 2123 transitions. Word has length 124 [2020-08-21 13:29:10,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:29:10,781 INFO L479 AbstractCegarLoop]: Abstraction has 1549 states and 2123 transitions. [2020-08-21 13:29:10,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-21 13:29:10,782 INFO L276 IsEmpty]: Start isEmpty. Operand 1549 states and 2123 transitions. [2020-08-21 13:29:10,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-08-21 13:29:10,784 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:29:10,784 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:29:10,784 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 13:29:10,784 INFO L427 AbstractCegarLoop]: === Iteration 13 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:29:10,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:29:10,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1891846081, now seen corresponding path program 1 times [2020-08-21 13:29:10,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:29:10,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1507982963] [2020-08-21 13:29:10,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:29:10,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:10,962 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-21 13:29:10,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:29:10,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:10,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:29:10,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:10,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:29:10,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:10,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 13:29:10,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:11,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:29:11,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:11,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 13:29:11,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:11,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:29:11,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:11,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 13:29:11,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:11,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:29:11,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:11,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 13:29:11,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:11,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:29:11,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:11,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 13:29:11,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:11,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-21 13:29:11,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:11,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-21 13:29:11,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:11,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-21 13:29:11,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:11,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-21 13:29:11,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:11,269 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-08-21 13:29:11,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1507982963] [2020-08-21 13:29:11,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:29:11,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-21 13:29:11,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553161042] [2020-08-21 13:29:11,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 13:29:11,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:29:11,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 13:29:11,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-21 13:29:11,272 INFO L87 Difference]: Start difference. First operand 1549 states and 2123 transitions. Second operand 13 states. [2020-08-21 13:29:13,002 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-21 13:29:13,118 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-21 13:29:14,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:29:14,081 INFO L93 Difference]: Finished difference Result 2816 states and 3937 transitions. [2020-08-21 13:29:14,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 13:29:14,081 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 131 [2020-08-21 13:29:14,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:29:14,093 INFO L225 Difference]: With dead ends: 2816 [2020-08-21 13:29:14,093 INFO L226 Difference]: Without dead ends: 1589 [2020-08-21 13:29:14,099 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2020-08-21 13:29:14,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1589 states. [2020-08-21 13:29:14,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1589 to 1589. [2020-08-21 13:29:14,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1589 states. [2020-08-21 13:29:14,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1589 states to 1589 states and 2155 transitions. [2020-08-21 13:29:14,370 INFO L78 Accepts]: Start accepts. Automaton has 1589 states and 2155 transitions. Word has length 131 [2020-08-21 13:29:14,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:29:14,371 INFO L479 AbstractCegarLoop]: Abstraction has 1589 states and 2155 transitions. [2020-08-21 13:29:14,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 13:29:14,371 INFO L276 IsEmpty]: Start isEmpty. Operand 1589 states and 2155 transitions. [2020-08-21 13:29:14,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-08-21 13:29:14,374 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:29:14,375 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:29:14,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-21 13:29:14,375 INFO L427 AbstractCegarLoop]: === Iteration 14 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:29:14,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:29:14,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1235243833, now seen corresponding path program 1 times [2020-08-21 13:29:14,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:29:14,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1034047827] [2020-08-21 13:29:14,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:29:14,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:14,621 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-21 13:29:14,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:29:14,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:14,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:29:14,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:14,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:29:14,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:14,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 13:29:14,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:14,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:29:14,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:14,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 13:29:14,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:14,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:29:14,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:14,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 13:29:14,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:14,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:29:14,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:14,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-21 13:29:14,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:14,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:29:14,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:14,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 13:29:14,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:14,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-21 13:29:14,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:14,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-21 13:29:14,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:14,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-08-21 13:29:14,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:14,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-21 13:29:14,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:14,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-21 13:29:14,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:14,950 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-08-21 13:29:14,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1034047827] [2020-08-21 13:29:14,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:29:14,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 13:29:14,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932894839] [2020-08-21 13:29:14,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 13:29:14,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:29:14,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 13:29:14,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-08-21 13:29:14,953 INFO L87 Difference]: Start difference. First operand 1589 states and 2155 transitions. Second operand 12 states. [2020-08-21 13:29:15,173 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-21 13:29:16,704 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-08-21 13:29:16,864 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 95