/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 02:07:19,214 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 02:07:19,217 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 02:07:19,259 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 02:07:19,259 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 02:07:19,260 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 02:07:19,262 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 02:07:19,263 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 02:07:19,265 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 02:07:19,266 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 02:07:19,267 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 02:07:19,268 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 02:07:19,268 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 02:07:19,269 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 02:07:19,270 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 02:07:19,271 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 02:07:19,272 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 02:07:19,272 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 02:07:19,274 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 02:07:19,276 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 02:07:19,277 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 02:07:19,278 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 02:07:19,279 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 02:07:19,279 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 02:07:19,282 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 02:07:19,282 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 02:07:19,282 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 02:07:19,283 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 02:07:19,283 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 02:07:19,284 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 02:07:19,284 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 02:07:19,285 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 02:07:19,286 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 02:07:19,286 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 02:07:19,287 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 02:07:19,287 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 02:07:19,288 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 02:07:19,288 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 02:07:19,288 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 02:07:19,289 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 02:07:19,290 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 02:07:19,291 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 [2020-08-19 02:07:19,313 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 02:07:19,313 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 02:07:19,314 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 02:07:19,314 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 02:07:19,315 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 02:07:19,315 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 02:07:19,315 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 02:07:19,315 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 02:07:19,315 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 02:07:19,316 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 02:07:19,316 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 02:07:19,316 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 02:07:19,316 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 02:07:19,316 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 02:07:19,317 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 02:07:19,317 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 02:07:19,317 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 02:07:19,317 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 02:07:19,317 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 02:07:19,318 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 02:07:19,318 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 02:07:19,318 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 02:07:19,318 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 02:07:19,318 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 02:07:19,319 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 02:07:19,319 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 02:07:19,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 02:07:19,319 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 02:07:19,319 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 02:07:19,320 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; [2020-08-19 02:07:19,642 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 02:07:19,661 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 02:07:19,667 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 02:07:19,669 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 02:07:19,669 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 02:07:19,670 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.UNBOUNDED.pals.c [2020-08-19 02:07:19,725 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/562553429/e7ec8b228da0440087a783f717c8ab23/FLAGa584cb8b0 [2020-08-19 02:07:20,221 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 02:07:20,222 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.UNBOUNDED.pals.c [2020-08-19 02:07:20,234 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/562553429/e7ec8b228da0440087a783f717c8ab23/FLAGa584cb8b0 [2020-08-19 02:07:20,590 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/562553429/e7ec8b228da0440087a783f717c8ab23 [2020-08-19 02:07:20,600 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 02:07:20,602 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 02:07:20,603 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 02:07:20,603 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 02:07:20,607 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 02:07:20,608 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:07:20" (1/1) ... [2020-08-19 02:07:20,611 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@461dafa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:07:20, skipping insertion in model container [2020-08-19 02:07:20,611 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:07:20" (1/1) ... [2020-08-19 02:07:20,620 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 02:07:20,674 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 02:07:21,046 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:07:21,059 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 02:07:21,126 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:07:21,158 INFO L208 MainTranslator]: Completed translation [2020-08-19 02:07:21,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:07:21 WrapperNode [2020-08-19 02:07:21,159 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 02:07:21,160 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 02:07:21,160 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 02:07:21,160 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 02:07:21,174 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:07:21" (1/1) ... [2020-08-19 02:07:21,174 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:07:21" (1/1) ... [2020-08-19 02:07:21,188 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:07:21" (1/1) ... [2020-08-19 02:07:21,188 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:07:21" (1/1) ... [2020-08-19 02:07:21,207 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:07:21" (1/1) ... [2020-08-19 02:07:21,221 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:07:21" (1/1) ... [2020-08-19 02:07:21,225 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:07:21" (1/1) ... [2020-08-19 02:07:21,231 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 02:07:21,232 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 02:07:21,232 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 02:07:21,232 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 02:07:21,233 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:07:21" (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 [2020-08-19 02:07:21,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 02:07:21,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 02:07:21,295 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-19 02:07:21,295 INFO L138 BoogieDeclarations]: Found implementation of procedure write_side1_failed_history [2020-08-19 02:07:21,295 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2020-08-19 02:07:21,295 INFO L138 BoogieDeclarations]: Found implementation of procedure write_side2_failed_history [2020-08-19 02:07:21,296 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2020-08-19 02:07:21,296 INFO L138 BoogieDeclarations]: Found implementation of procedure write_active_side_history [2020-08-19 02:07:21,296 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2020-08-19 02:07:21,296 INFO L138 BoogieDeclarations]: Found implementation of procedure write_manual_selection_history [2020-08-19 02:07:21,296 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2020-08-19 02:07:21,296 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-08-19 02:07:21,297 INFO L138 BoogieDeclarations]: Found implementation of procedure flip_the_side [2020-08-19 02:07:21,297 INFO L138 BoogieDeclarations]: Found implementation of procedure Console_task_each_pals_period [2020-08-19 02:07:21,297 INFO L138 BoogieDeclarations]: Found implementation of procedure Side1_activestandby_task_each_pals_period [2020-08-19 02:07:21,297 INFO L138 BoogieDeclarations]: Found implementation of procedure Side2_activestandby_task_each_pals_period [2020-08-19 02:07:21,297 INFO L138 BoogieDeclarations]: Found implementation of procedure Pendulum_prism_task_each_pals_period [2020-08-19 02:07:21,297 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-08-19 02:07:21,297 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 02:07:21,298 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-08-19 02:07:21,298 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 02:07:21,298 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-19 02:07:21,298 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-19 02:07:21,298 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-08-19 02:07:21,298 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-08-19 02:07:21,299 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-08-19 02:07:21,299 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 02:07:21,299 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-19 02:07:21,299 INFO L130 BoogieDeclarations]: Found specification of procedure write_side1_failed_history [2020-08-19 02:07:21,299 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2020-08-19 02:07:21,299 INFO L130 BoogieDeclarations]: Found specification of procedure write_side2_failed_history [2020-08-19 02:07:21,300 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2020-08-19 02:07:21,300 INFO L130 BoogieDeclarations]: Found specification of procedure write_active_side_history [2020-08-19 02:07:21,300 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2020-08-19 02:07:21,300 INFO L130 BoogieDeclarations]: Found specification of procedure write_manual_selection_history [2020-08-19 02:07:21,300 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2020-08-19 02:07:21,300 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-08-19 02:07:21,301 INFO L130 BoogieDeclarations]: Found specification of procedure flip_the_side [2020-08-19 02:07:21,301 INFO L130 BoogieDeclarations]: Found specification of procedure Console_task_each_pals_period [2020-08-19 02:07:21,301 INFO L130 BoogieDeclarations]: Found specification of procedure Side1_activestandby_task_each_pals_period [2020-08-19 02:07:21,301 INFO L130 BoogieDeclarations]: Found specification of procedure Side2_activestandby_task_each_pals_period [2020-08-19 02:07:21,301 INFO L130 BoogieDeclarations]: Found specification of procedure Pendulum_prism_task_each_pals_period [2020-08-19 02:07:21,301 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-08-19 02:07:21,302 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 02:07:21,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 02:07:21,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 02:07:22,098 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 02:07:22,098 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-19 02:07:22,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:07:22 BoogieIcfgContainer [2020-08-19 02:07:22,105 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 02:07:22,106 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 02:07:22,106 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 02:07:22,110 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 02:07:22,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 02:07:20" (1/3) ... [2020-08-19 02:07:22,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@470342e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:07:22, skipping insertion in model container [2020-08-19 02:07:22,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:07:21" (2/3) ... [2020-08-19 02:07:22,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@470342e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:07:22, skipping insertion in model container [2020-08-19 02:07:22,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:07:22" (3/3) ... [2020-08-19 02:07:22,114 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.1.ufo.UNBOUNDED.pals.c [2020-08-19 02:07:22,125 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 02:07:22,133 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 02:07:22,148 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 02:07:22,176 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 02:07:22,176 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 02:07:22,176 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 02:07:22,177 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 02:07:22,177 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 02:07:22,177 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 02:07:22,178 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 02:07:22,178 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 02:07:22,204 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states. [2020-08-19 02:07:22,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-08-19 02:07:22,215 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:07:22,216 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] [2020-08-19 02:07:22,217 INFO L427 AbstractCegarLoop]: === Iteration 1 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:07:22,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:07:22,224 INFO L82 PathProgramCache]: Analyzing trace with hash -1549655252, now seen corresponding path program 1 times [2020-08-19 02:07:22,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:07:22,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [563809140] [2020-08-19 02:07:22,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:07:22,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:22,777 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-19 02:07:22,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:07:22,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:22,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:07:22,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:22,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 02:07:22,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:22,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:07:22,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:22,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:07:22,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:22,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 02:07:22,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:22,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:07:22,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:22,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 02:07:22,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:22,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:07:22,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:23,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:07:23,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [563809140] [2020-08-19 02:07:23,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:07:23,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 02:07:23,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955680003] [2020-08-19 02:07:23,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 02:07:23,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:07:23,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 02:07:23,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-08-19 02:07:23,029 INFO L87 Difference]: Start difference. First operand 242 states. Second operand 9 states. [2020-08-19 02:07:24,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:07:24,536 INFO L93 Difference]: Finished difference Result 456 states and 705 transitions. [2020-08-19 02:07:24,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 02:07:24,538 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 71 [2020-08-19 02:07:24,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:07:24,552 INFO L225 Difference]: With dead ends: 456 [2020-08-19 02:07:24,553 INFO L226 Difference]: Without dead ends: 237 [2020-08-19 02:07:24,560 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2020-08-19 02:07:24,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-08-19 02:07:24,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2020-08-19 02:07:24,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-08-19 02:07:24,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 342 transitions. [2020-08-19 02:07:24,649 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 342 transitions. Word has length 71 [2020-08-19 02:07:24,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:07:24,650 INFO L479 AbstractCegarLoop]: Abstraction has 237 states and 342 transitions. [2020-08-19 02:07:24,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 02:07:24,650 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 342 transitions. [2020-08-19 02:07:24,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-08-19 02:07:24,654 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:07:24,655 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] [2020-08-19 02:07:24,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 02:07:24,656 INFO L427 AbstractCegarLoop]: === Iteration 2 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:07:24,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:07:24,657 INFO L82 PathProgramCache]: Analyzing trace with hash 695502060, now seen corresponding path program 1 times [2020-08-19 02:07:24,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:07:24,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [725547202] [2020-08-19 02:07:24,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:07:24,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:24,934 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-19 02:07:24,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:07:24,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:24,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:07:24,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:24,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 02:07:24,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:25,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:07:25,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:25,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:07:25,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:25,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 02:07:25,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:25,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:07:25,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:25,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 02:07:25,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:25,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:07:25,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:25,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:07:25,210 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [725547202] [2020-08-19 02:07:25,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:07:25,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-19 02:07:25,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012461096] [2020-08-19 02:07:25,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-19 02:07:25,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:07:25,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-19 02:07:25,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-08-19 02:07:25,218 INFO L87 Difference]: Start difference. First operand 237 states and 342 transitions. Second operand 14 states. [2020-08-19 02:07:25,387 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-19 02:07:25,636 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-19 02:07:25,802 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-19 02:07:28,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:07:28,093 INFO L93 Difference]: Finished difference Result 455 states and 653 transitions. [2020-08-19 02:07:28,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-19 02:07:28,094 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 71 [2020-08-19 02:07:28,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:07:28,100 INFO L225 Difference]: With dead ends: 455 [2020-08-19 02:07:28,100 INFO L226 Difference]: Without dead ends: 237 [2020-08-19 02:07:28,107 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 [2020-08-19 02:07:28,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-08-19 02:07:28,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2020-08-19 02:07:28,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-08-19 02:07:28,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 330 transitions. [2020-08-19 02:07:28,162 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 330 transitions. Word has length 71 [2020-08-19 02:07:28,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:07:28,163 INFO L479 AbstractCegarLoop]: Abstraction has 237 states and 330 transitions. [2020-08-19 02:07:28,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-19 02:07:28,163 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 330 transitions. [2020-08-19 02:07:28,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-19 02:07:28,166 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:07:28,167 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] [2020-08-19 02:07:28,167 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 02:07:28,167 INFO L427 AbstractCegarLoop]: === Iteration 3 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:07:28,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:07:28,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1333871800, now seen corresponding path program 1 times [2020-08-19 02:07:28,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:07:28,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [847261503] [2020-08-19 02:07:28,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:07:28,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:28,389 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-19 02:07:28,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:07:28,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:28,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:07:28,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:28,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:07:28,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:28,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-19 02:07:28,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:28,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:07:28,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:28,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 02:07:28,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:28,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:07:28,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:28,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 02:07:28,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:28,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:07:28,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:28,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:07:28,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [847261503] [2020-08-19 02:07:28,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:07:28,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 02:07:28,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948673945] [2020-08-19 02:07:28,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 02:07:28,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:07:28,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 02:07:28,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-08-19 02:07:28,579 INFO L87 Difference]: Start difference. First operand 237 states and 330 transitions. Second operand 11 states. [2020-08-19 02:07:29,506 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-19 02:07:29,644 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-19 02:07:30,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:07:30,761 INFO L93 Difference]: Finished difference Result 454 states and 645 transitions. [2020-08-19 02:07:30,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 02:07:30,761 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 82 [2020-08-19 02:07:30,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:07:30,764 INFO L225 Difference]: With dead ends: 454 [2020-08-19 02:07:30,764 INFO L226 Difference]: Without dead ends: 241 [2020-08-19 02:07:30,766 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 [2020-08-19 02:07:30,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-08-19 02:07:30,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2020-08-19 02:07:30,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-08-19 02:07:30,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 333 transitions. [2020-08-19 02:07:30,800 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 333 transitions. Word has length 82 [2020-08-19 02:07:30,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:07:30,801 INFO L479 AbstractCegarLoop]: Abstraction has 241 states and 333 transitions. [2020-08-19 02:07:30,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 02:07:30,801 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 333 transitions. [2020-08-19 02:07:30,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-08-19 02:07:30,804 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:07:30,804 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] [2020-08-19 02:07:30,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 02:07:30,805 INFO L427 AbstractCegarLoop]: === Iteration 4 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:07:30,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:07:30,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1250466386, now seen corresponding path program 1 times [2020-08-19 02:07:30,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:07:30,806 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1751184233] [2020-08-19 02:07:30,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:07:30,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:31,024 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-19 02:07:31,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:07:31,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:31,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:07:31,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:31,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:07:31,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:31,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-19 02:07:31,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:31,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:07:31,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:31,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 02:07:31,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:31,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:07:31,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:31,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 02:07:31,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:31,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:07:31,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:31,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-19 02:07:31,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:31,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:07:31,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:31,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-19 02:07:31,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:31,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-19 02:07:31,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:31,306 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-19 02:07:31,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1751184233] [2020-08-19 02:07:31,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:07:31,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-08-19 02:07:31,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050463283] [2020-08-19 02:07:31,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-19 02:07:31,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:07:31,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-19 02:07:31,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-08-19 02:07:31,309 INFO L87 Difference]: Start difference. First operand 241 states and 333 transitions. Second operand 16 states. [2020-08-19 02:07:31,501 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-19 02:07:33,338 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-19 02:07:35,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:07:35,068 INFO L93 Difference]: Finished difference Result 549 states and 758 transitions. [2020-08-19 02:07:35,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-19 02:07:35,070 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 104 [2020-08-19 02:07:35,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:07:35,075 INFO L225 Difference]: With dead ends: 549 [2020-08-19 02:07:35,075 INFO L226 Difference]: Without dead ends: 332 [2020-08-19 02:07:35,077 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 [2020-08-19 02:07:35,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2020-08-19 02:07:35,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 331. [2020-08-19 02:07:35,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2020-08-19 02:07:35,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 448 transitions. [2020-08-19 02:07:35,117 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 448 transitions. Word has length 104 [2020-08-19 02:07:35,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:07:35,118 INFO L479 AbstractCegarLoop]: Abstraction has 331 states and 448 transitions. [2020-08-19 02:07:35,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-19 02:07:35,118 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 448 transitions. [2020-08-19 02:07:35,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-08-19 02:07:35,121 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:07:35,121 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] [2020-08-19 02:07:35,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 02:07:35,122 INFO L427 AbstractCegarLoop]: === Iteration 5 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:07:35,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:07:35,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1479117531, now seen corresponding path program 1 times [2020-08-19 02:07:35,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:07:35,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [102753102] [2020-08-19 02:07:35,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:07:35,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:35,318 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-19 02:07:35,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:07:35,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:35,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:07:35,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:35,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:07:35,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:35,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-19 02:07:35,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:35,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:07:35,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:35,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 02:07:35,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:35,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:07:35,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:35,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 02:07:35,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:35,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:07:35,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:35,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-19 02:07:35,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:35,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:07:35,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:35,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:07:35,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:35,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-19 02:07:35,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:35,627 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-19 02:07:35,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [102753102] [2020-08-19 02:07:35,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:07:35,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-08-19 02:07:35,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810174426] [2020-08-19 02:07:35,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-19 02:07:35,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:07:35,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-19 02:07:35,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-08-19 02:07:35,630 INFO L87 Difference]: Start difference. First operand 331 states and 448 transitions. Second operand 16 states. [2020-08-19 02:07:35,825 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-19 02:07:37,159 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-08-19 02:07:37,622 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-19 02:07:39,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:07:39,339 INFO L93 Difference]: Finished difference Result 555 states and 766 transitions. [2020-08-19 02:07:39,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-19 02:07:39,340 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 105 [2020-08-19 02:07:39,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:07:39,342 INFO L225 Difference]: With dead ends: 555 [2020-08-19 02:07:39,343 INFO L226 Difference]: Without dead ends: 335 [2020-08-19 02:07:39,344 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 [2020-08-19 02:07:39,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-08-19 02:07:39,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 331. [2020-08-19 02:07:39,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2020-08-19 02:07:39,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 448 transitions. [2020-08-19 02:07:39,382 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 448 transitions. Word has length 105 [2020-08-19 02:07:39,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:07:39,382 INFO L479 AbstractCegarLoop]: Abstraction has 331 states and 448 transitions. [2020-08-19 02:07:39,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-19 02:07:39,383 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 448 transitions. [2020-08-19 02:07:39,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-08-19 02:07:39,384 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:07:39,385 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] [2020-08-19 02:07:39,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 02:07:39,385 INFO L427 AbstractCegarLoop]: === Iteration 6 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:07:39,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:07:39,386 INFO L82 PathProgramCache]: Analyzing trace with hash -717194829, now seen corresponding path program 1 times [2020-08-19 02:07:39,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:07:39,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [564062414] [2020-08-19 02:07:39,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:07:39,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:39,557 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-19 02:07:39,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:07:39,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:39,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:07:39,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:39,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:07:39,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:39,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-19 02:07:39,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:39,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:07:39,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:39,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 02:07:39,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:39,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:07:39,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:39,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 02:07:39,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:39,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:07:39,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:39,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-19 02:07:39,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:39,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:07:39,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:39,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 02:07:39,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:39,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-19 02:07:39,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:39,835 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-19 02:07:39,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [564062414] [2020-08-19 02:07:39,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:07:39,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 02:07:39,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607820066] [2020-08-19 02:07:39,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 02:07:39,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:07:39,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 02:07:39,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-08-19 02:07:39,838 INFO L87 Difference]: Start difference. First operand 331 states and 448 transitions. Second operand 12 states. [2020-08-19 02:07:40,526 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-19 02:07:43,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:07:43,212 INFO L93 Difference]: Finished difference Result 788 states and 1093 transitions. [2020-08-19 02:07:43,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-19 02:07:43,212 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 107 [2020-08-19 02:07:43,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:07:43,218 INFO L225 Difference]: With dead ends: 788 [2020-08-19 02:07:43,219 INFO L226 Difference]: Without dead ends: 568 [2020-08-19 02:07:43,220 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 [2020-08-19 02:07:43,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2020-08-19 02:07:43,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 551. [2020-08-19 02:07:43,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 551 states. [2020-08-19 02:07:43,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 759 transitions. [2020-08-19 02:07:43,287 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 759 transitions. Word has length 107 [2020-08-19 02:07:43,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:07:43,288 INFO L479 AbstractCegarLoop]: Abstraction has 551 states and 759 transitions. [2020-08-19 02:07:43,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 02:07:43,288 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 759 transitions. [2020-08-19 02:07:43,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-19 02:07:43,290 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:07:43,290 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] [2020-08-19 02:07:43,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 02:07:43,290 INFO L427 AbstractCegarLoop]: === Iteration 7 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:07:43,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:07:43,291 INFO L82 PathProgramCache]: Analyzing trace with hash 654438841, now seen corresponding path program 1 times [2020-08-19 02:07:43,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:07:43,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [705546083] [2020-08-19 02:07:43,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:07:43,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:43,468 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-19 02:07:43,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:07:43,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:43,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:07:43,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:43,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:07:43,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:43,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-19 02:07:43,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:43,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:07:43,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:43,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 02:07:43,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:43,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:07:43,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:43,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 02:07:43,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:43,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:07:43,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:43,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-19 02:07:43,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:43,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:07:43,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:43,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 02:07:43,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:43,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-19 02:07:43,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:43,704 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-19 02:07:43,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [705546083] [2020-08-19 02:07:43,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:07:43,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 02:07:43,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119144593] [2020-08-19 02:07:43,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 02:07:43,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:07:43,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 02:07:43,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-08-19 02:07:43,707 INFO L87 Difference]: Start difference. First operand 551 states and 759 transitions. Second operand 12 states. [2020-08-19 02:07:44,734 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-19 02:07:47,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:07:47,213 INFO L93 Difference]: Finished difference Result 1308 states and 1846 transitions. [2020-08-19 02:07:47,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-19 02:07:47,213 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 108 [2020-08-19 02:07:47,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:07:47,225 INFO L225 Difference]: With dead ends: 1308 [2020-08-19 02:07:47,225 INFO L226 Difference]: Without dead ends: 911 [2020-08-19 02:07:47,228 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 [2020-08-19 02:07:47,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2020-08-19 02:07:47,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 905. [2020-08-19 02:07:47,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 905 states. [2020-08-19 02:07:47,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1266 transitions. [2020-08-19 02:07:47,362 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1266 transitions. Word has length 108 [2020-08-19 02:07:47,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:07:47,362 INFO L479 AbstractCegarLoop]: Abstraction has 905 states and 1266 transitions. [2020-08-19 02:07:47,362 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 02:07:47,363 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1266 transitions. [2020-08-19 02:07:47,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-08-19 02:07:47,366 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:07:47,367 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] [2020-08-19 02:07:47,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 02:07:47,367 INFO L427 AbstractCegarLoop]: === Iteration 8 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:07:47,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:07:47,367 INFO L82 PathProgramCache]: Analyzing trace with hash 925446042, now seen corresponding path program 1 times [2020-08-19 02:07:47,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:07:47,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2002934639] [2020-08-19 02:07:47,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:07:47,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:47,566 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-19 02:07:47,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:07:47,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:47,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:07:47,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:47,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:07:47,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:47,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-19 02:07:47,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:47,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:07:47,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:47,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 02:07:47,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:47,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:07:47,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:47,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 02:07:47,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:47,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:07:47,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:47,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-19 02:07:47,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:47,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:07:47,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:47,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 02:07:47,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:47,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-19 02:07:47,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:47,806 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-19 02:07:47,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2002934639] [2020-08-19 02:07:47,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:07:47,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 02:07:47,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110576592] [2020-08-19 02:07:47,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 02:07:47,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:07:47,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 02:07:47,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-08-19 02:07:47,809 INFO L87 Difference]: Start difference. First operand 905 states and 1266 transitions. Second operand 12 states. [2020-08-19 02:07:47,973 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-19 02:07:51,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:07:51,240 INFO L93 Difference]: Finished difference Result 1649 states and 2335 transitions. [2020-08-19 02:07:51,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-19 02:07:51,242 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 109 [2020-08-19 02:07:51,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:07:51,248 INFO L225 Difference]: With dead ends: 1649 [2020-08-19 02:07:51,249 INFO L226 Difference]: Without dead ends: 916 [2020-08-19 02:07:51,252 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2020-08-19 02:07:51,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2020-08-19 02:07:51,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 910. [2020-08-19 02:07:51,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 910 states. [2020-08-19 02:07:51,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1268 transitions. [2020-08-19 02:07:51,350 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1268 transitions. Word has length 109 [2020-08-19 02:07:51,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:07:51,351 INFO L479 AbstractCegarLoop]: Abstraction has 910 states and 1268 transitions. [2020-08-19 02:07:51,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 02:07:51,351 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1268 transitions. [2020-08-19 02:07:51,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-19 02:07:51,354 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:07:51,354 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] [2020-08-19 02:07:51,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 02:07:51,355 INFO L427 AbstractCegarLoop]: === Iteration 9 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:07:51,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:07:51,355 INFO L82 PathProgramCache]: Analyzing trace with hash -625424837, now seen corresponding path program 1 times [2020-08-19 02:07:51,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:07:51,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1195895766] [2020-08-19 02:07:51,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:07:51,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:51,579 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-19 02:07:51,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:07:51,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:51,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:07:51,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:51,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:07:51,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:51,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-19 02:07:51,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:51,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:07:51,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:51,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 02:07:51,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:51,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:07:51,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:51,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 02:07:51,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:51,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:07:51,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:51,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-19 02:07:51,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:51,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:07:51,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:51,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 02:07:51,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:51,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-19 02:07:51,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:51,784 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-19 02:07:51,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1195895766] [2020-08-19 02:07:51,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:07:51,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-19 02:07:51,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709738642] [2020-08-19 02:07:51,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 02:07:51,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:07:51,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 02:07:51,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-19 02:07:51,787 INFO L87 Difference]: Start difference. First operand 910 states and 1268 transitions. Second operand 13 states. [2020-08-19 02:07:53,121 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-19 02:07:53,245 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-19 02:07:54,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:07:54,159 INFO L93 Difference]: Finished difference Result 1663 states and 2354 transitions. [2020-08-19 02:07:54,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 02:07:54,160 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 108 [2020-08-19 02:07:54,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:07:54,167 INFO L225 Difference]: With dead ends: 1663 [2020-08-19 02:07:54,167 INFO L226 Difference]: Without dead ends: 930 [2020-08-19 02:07:54,171 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2020-08-19 02:07:54,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2020-08-19 02:07:54,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 930. [2020-08-19 02:07:54,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 930 states. [2020-08-19 02:07:54,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 930 states to 930 states and 1284 transitions. [2020-08-19 02:07:54,274 INFO L78 Accepts]: Start accepts. Automaton has 930 states and 1284 transitions. Word has length 108 [2020-08-19 02:07:54,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:07:54,275 INFO L479 AbstractCegarLoop]: Abstraction has 930 states and 1284 transitions. [2020-08-19 02:07:54,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 02:07:54,275 INFO L276 IsEmpty]: Start isEmpty. Operand 930 states and 1284 transitions. [2020-08-19 02:07:54,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-08-19 02:07:54,279 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:07:54,279 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] [2020-08-19 02:07:54,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 02:07:54,280 INFO L427 AbstractCegarLoop]: === Iteration 10 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:07:54,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:07:54,280 INFO L82 PathProgramCache]: Analyzing trace with hash 442586826, now seen corresponding path program 1 times [2020-08-19 02:07:54,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:07:54,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [242796579] [2020-08-19 02:07:54,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:07:54,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:54,519 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-19 02:07:54,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:07:54,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:54,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:07:54,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:54,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:07:54,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:54,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-19 02:07:54,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:54,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:07:54,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:54,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 02:07:54,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:54,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:07:54,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:54,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-19 02:07:54,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:54,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:07:54,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:54,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-19 02:07:54,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:54,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:07:54,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:54,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 02:07:54,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:54,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-19 02:07:54,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:54,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-19 02:07:54,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:54,747 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-19 02:07:54,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [242796579] [2020-08-19 02:07:54,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:07:54,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 02:07:54,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819776844] [2020-08-19 02:07:54,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 02:07:54,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:07:54,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 02:07:54,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-08-19 02:07:54,749 INFO L87 Difference]: Start difference. First operand 930 states and 1284 transitions. Second operand 12 states. [2020-08-19 02:07:54,994 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-19 02:07:58,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:07:58,627 INFO L93 Difference]: Finished difference Result 1715 states and 2391 transitions. [2020-08-19 02:07:58,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-19 02:07:58,628 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 117 [2020-08-19 02:07:58,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:07:58,635 INFO L225 Difference]: With dead ends: 1715 [2020-08-19 02:07:58,635 INFO L226 Difference]: Without dead ends: 962 [2020-08-19 02:07:58,638 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2020-08-19 02:07:58,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2020-08-19 02:07:58,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 930. [2020-08-19 02:07:58,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 930 states. [2020-08-19 02:07:58,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 930 states to 930 states and 1280 transitions. [2020-08-19 02:07:58,728 INFO L78 Accepts]: Start accepts. Automaton has 930 states and 1280 transitions. Word has length 117 [2020-08-19 02:07:58,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:07:58,729 INFO L479 AbstractCegarLoop]: Abstraction has 930 states and 1280 transitions. [2020-08-19 02:07:58,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 02:07:58,729 INFO L276 IsEmpty]: Start isEmpty. Operand 930 states and 1280 transitions. [2020-08-19 02:07:58,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-08-19 02:07:58,731 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:07:58,731 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] [2020-08-19 02:07:58,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 02:07:58,732 INFO L427 AbstractCegarLoop]: === Iteration 11 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:07:58,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:07:58,732 INFO L82 PathProgramCache]: Analyzing trace with hash -208311273, now seen corresponding path program 1 times [2020-08-19 02:07:58,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:07:58,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1100267892] [2020-08-19 02:07:58,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:07:58,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:58,916 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-19 02:07:58,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:07:58,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:58,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:07:58,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:58,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:07:58,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:58,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-19 02:07:58,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:58,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:07:58,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:58,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 02:07:58,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:59,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:07:59,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:59,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 02:07:59,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:59,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:07:59,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:59,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-19 02:07:59,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:59,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:07:59,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:59,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 02:07:59,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:59,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-19 02:07:59,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:59,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-19 02:07:59,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:07:59,124 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-19 02:07:59,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1100267892] [2020-08-19 02:07:59,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:07:59,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-19 02:07:59,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902244579] [2020-08-19 02:07:59,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 02:07:59,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:07:59,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 02:07:59,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-19 02:07:59,128 INFO L87 Difference]: Start difference. First operand 930 states and 1280 transitions. Second operand 13 states. [2020-08-19 02:08:00,540 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-19 02:08:00,673 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-19 02:08:01,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:08:01,519 INFO L93 Difference]: Finished difference Result 1703 states and 2388 transitions. [2020-08-19 02:08:01,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 02:08:01,520 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 116 [2020-08-19 02:08:01,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:08:01,527 INFO L225 Difference]: With dead ends: 1703 [2020-08-19 02:08:01,527 INFO L226 Difference]: Without dead ends: 950 [2020-08-19 02:08:01,531 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2020-08-19 02:08:01,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2020-08-19 02:08:01,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 950. [2020-08-19 02:08:01,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 950 states. [2020-08-19 02:08:01,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1296 transitions. [2020-08-19 02:08:01,625 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1296 transitions. Word has length 116 [2020-08-19 02:08:01,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:08:01,626 INFO L479 AbstractCegarLoop]: Abstraction has 950 states and 1296 transitions. [2020-08-19 02:08:01,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 02:08:01,626 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1296 transitions. [2020-08-19 02:08:01,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-08-19 02:08:01,628 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:08:01,628 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] [2020-08-19 02:08:01,628 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 02:08:01,628 INFO L427 AbstractCegarLoop]: === Iteration 12 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:08:01,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:08:01,629 INFO L82 PathProgramCache]: Analyzing trace with hash -2072056031, now seen corresponding path program 1 times [2020-08-19 02:08:01,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:08:01,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1077450727] [2020-08-19 02:08:01,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:08:01,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:08:01,801 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-19 02:08:01,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:08:01,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:08:01,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:08:01,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:08:01,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:08:01,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:08:01,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-19 02:08:01,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:08:01,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:08:01,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:08:01,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 02:08:01,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:08:01,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:08:01,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:08:01,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 02:08:01,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:08:01,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:08:01,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:08:01,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-19 02:08:01,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:08:01,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:08:01,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:08:02,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 02:08:02,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:08:02,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-19 02:08:02,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:08:02,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-19 02:08:02,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:08:02,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-19 02:08:02,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:08:02,056 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-19 02:08:02,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1077450727] [2020-08-19 02:08:02,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:08:02,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-19 02:08:02,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337742569] [2020-08-19 02:08:02,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 02:08:02,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:08:02,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 02:08:02,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-19 02:08:02,064 INFO L87 Difference]: Start difference. First operand 950 states and 1296 transitions. Second operand 13 states. [2020-08-19 02:08:03,750 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-19 02:08:03,886 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-19 02:08:04,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:08:04,608 INFO L93 Difference]: Finished difference Result 1739 states and 2404 transitions. [2020-08-19 02:08:04,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 02:08:04,608 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 124 [2020-08-19 02:08:04,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:08:04,614 INFO L225 Difference]: With dead ends: 1739 [2020-08-19 02:08:04,614 INFO L226 Difference]: Without dead ends: 966 [2020-08-19 02:08:04,618 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2020-08-19 02:08:04,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2020-08-19 02:08:04,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 966. [2020-08-19 02:08:04,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 966 states. [2020-08-19 02:08:04,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1308 transitions. [2020-08-19 02:08:04,720 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1308 transitions. Word has length 124 [2020-08-19 02:08:04,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:08:04,720 INFO L479 AbstractCegarLoop]: Abstraction has 966 states and 1308 transitions. [2020-08-19 02:08:04,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 02:08:04,720 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1308 transitions. [2020-08-19 02:08:04,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-08-19 02:08:04,722 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:08:04,723 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] [2020-08-19 02:08:04,723 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 02:08:04,723 INFO L427 AbstractCegarLoop]: === Iteration 13 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:08:04,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:08:04,723 INFO L82 PathProgramCache]: Analyzing trace with hash 689076351, now seen corresponding path program 1 times [2020-08-19 02:08:04,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:08:04,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [845882540] [2020-08-19 02:08:04,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:08:04,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:08:04,932 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-19 02:08:04,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:08:04,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:08:04,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:08:04,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:08:04,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:08:04,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:08:04,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-19 02:08:04,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:08:05,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:08:05,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:08:05,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 02:08:05,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:08:05,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:08:05,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:08:05,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 02:08:05,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:08:05,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:08:05,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:08:05,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-19 02:08:05,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:08:05,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:08:05,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:08:05,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 02:08:05,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:08:05,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-19 02:08:05,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:08:05,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-19 02:08:05,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:08:05,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-19 02:08:05,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:08:05,366 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-19 02:08:05,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [845882540] [2020-08-19 02:08:05,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:08:05,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-08-19 02:08:05,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036488076] [2020-08-19 02:08:05,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-19 02:08:05,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:08:05,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-19 02:08:05,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2020-08-19 02:08:05,370 INFO L87 Difference]: Start difference. First operand 966 states and 1308 transitions. Second operand 18 states. [2020-08-19 02:08:05,804 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 133 [2020-08-19 02:08:06,053 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-08-19 02:08:06,569 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-08-19 02:08:08,025 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-19 02:08:08,189 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-19 02:08:08,362 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-19 02:08:09,916 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-08-19 02:08:10,062 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-19 02:08:12,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:08:12,531 INFO L93 Difference]: Finished difference Result 2593 states and 3617 transitions. [2020-08-19 02:08:12,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-19 02:08:12,532 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 124 [2020-08-19 02:08:12,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:08:12,551 INFO L225 Difference]: With dead ends: 2593 [2020-08-19 02:08:12,551 INFO L226 Difference]: Without dead ends: 1792 [2020-08-19 02:08:12,557 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 [2020-08-19 02:08:12,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1792 states. [2020-08-19 02:08:12,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1792 to 1552. [2020-08-19 02:08:12,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1552 states. [2020-08-19 02:08:12,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1552 states to 1552 states and 2122 transitions. [2020-08-19 02:08:12,839 INFO L78 Accepts]: Start accepts. Automaton has 1552 states and 2122 transitions. Word has length 124 [2020-08-19 02:08:12,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:08:12,840 INFO L479 AbstractCegarLoop]: Abstraction has 1552 states and 2122 transitions. [2020-08-19 02:08:12,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-19 02:08:12,840 INFO L276 IsEmpty]: Start isEmpty. Operand 1552 states and 2122 transitions. [2020-08-19 02:08:12,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-08-19 02:08:12,843 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:08:12,843 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] [2020-08-19 02:08:12,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-19 02:08:12,844 INFO L427 AbstractCegarLoop]: === Iteration 14 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:08:12,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:08:12,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1938608124, now seen corresponding path program 1 times [2020-08-19 02:08:12,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:08:12,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [262723715] [2020-08-19 02:08:12,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:08:12,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:08:13,190 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-19 02:08:13,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:08:13,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:08:13,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:08:13,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:08:13,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:08:13,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:08:13,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-19 02:08:13,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:08:13,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:08:13,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:08:13,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 02:08:13,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:08:13,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:08:13,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:08:13,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 02:08:13,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:08:13,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:08:13,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:08:13,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-19 02:08:13,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:08:13,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:08:13,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:08:13,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 02:08:13,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:08:13,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-19 02:08:13,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:08:13,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-19 02:08:13,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:08:13,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-19 02:08:13,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:08:13,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-19 02:08:13,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:08:13,524 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-08-19 02:08:13,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [262723715] [2020-08-19 02:08:13,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:08:13,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-19 02:08:13,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061132147] [2020-08-19 02:08:13,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 02:08:13,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:08:13,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 02:08:13,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-19 02:08:13,529 INFO L87 Difference]: Start difference. First operand 1552 states and 2122 transitions. Second operand 13 states. [2020-08-19 02:08:15,040 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 91