/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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.BOUNDED-10.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 16:41:31,784 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 16:41:31,790 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 16:41:31,828 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 16:41:31,829 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 16:41:31,838 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 16:41:31,840 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 16:41:31,844 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 16:41:31,847 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 16:41:31,850 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 16:41:31,851 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 16:41:31,852 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 16:41:31,852 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 16:41:31,855 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 16:41:31,857 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 16:41:31,859 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 16:41:31,860 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 16:41:31,861 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 16:41:31,862 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 16:41:31,870 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 16:41:31,872 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 16:41:31,873 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 16:41:31,874 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 16:41:31,875 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 16:41:31,889 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 16:41:31,890 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 16:41:31,890 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 16:41:31,891 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 16:41:31,891 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 16:41:31,895 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 16:41:31,895 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 16:41:31,896 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 16:41:31,897 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 16:41:31,897 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 16:41:31,901 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 16:41:31,901 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 16:41:31,902 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 16:41:31,904 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 16:41:31,905 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 16:41:31,906 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 16:41:31,906 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 16:41:31,908 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 16:41:31,949 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 16:41:31,950 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 16:41:31,951 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 16:41:31,951 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 16:41:31,952 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 16:41:31,952 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 16:41:31,952 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 16:41:31,952 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 16:41:31,953 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 16:41:31,953 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 16:41:31,954 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 16:41:31,954 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 16:41:31,954 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 16:41:31,955 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 16:41:31,955 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 16:41:31,956 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 16:41:31,956 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 16:41:31,956 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 16:41:31,956 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 16:41:31,956 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 16:41:31,957 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 16:41:31,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 16:41:31,957 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 16:41:31,957 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 16:41:31,958 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 16:41:31,958 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 16:41:31,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 16:41:31,958 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 16:41:31,958 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 16:41:31,959 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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-08-21 16:41:32,233 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 16:41:32,245 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 16:41:32,248 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 16:41:32,250 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 16:41:32,250 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 16:41:32,251 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.BOUNDED-10.pals.c [2020-08-21 16:41:32,313 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f099c9392/74fe914cc67849b89fdfacf3f7246aaf/FLAGba9b8a4b0 [2020-08-21 16:41:32,856 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 16:41:32,857 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.BOUNDED-10.pals.c [2020-08-21 16:41:32,869 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f099c9392/74fe914cc67849b89fdfacf3f7246aaf/FLAGba9b8a4b0 [2020-08-21 16:41:33,163 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f099c9392/74fe914cc67849b89fdfacf3f7246aaf [2020-08-21 16:41:33,173 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 16:41:33,175 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 16:41:33,176 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 16:41:33,176 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 16:41:33,179 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 16:41:33,180 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:41:33" (1/1) ... [2020-08-21 16:41:33,183 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d5ae353 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:41:33, skipping insertion in model container [2020-08-21 16:41:33,184 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:41:33" (1/1) ... [2020-08-21 16:41:33,192 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 16:41:33,252 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 16:41:33,646 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:41:33,663 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 16:41:33,748 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:41:33,770 INFO L208 MainTranslator]: Completed translation [2020-08-21 16:41:33,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:41:33 WrapperNode [2020-08-21 16:41:33,770 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 16:41:33,771 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 16:41:33,771 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 16:41:33,771 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 16:41:33,782 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:41:33" (1/1) ... [2020-08-21 16:41:33,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:41:33" (1/1) ... [2020-08-21 16:41:33,797 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:41:33" (1/1) ... [2020-08-21 16:41:33,798 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:41:33" (1/1) ... [2020-08-21 16:41:33,818 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:41:33" (1/1) ... [2020-08-21 16:41:33,831 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:41:33" (1/1) ... [2020-08-21 16:41:33,836 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:41:33" (1/1) ... [2020-08-21 16:41:33,843 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 16:41:33,843 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 16:41:33,844 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 16:41:33,844 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 16:41:33,845 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:41:33" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 16:41:33,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 16:41:33,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 16:41:33,915 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 16:41:33,915 INFO L138 BoogieDeclarations]: Found implementation of procedure write_side1_failed_history [2020-08-21 16:41:33,915 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2020-08-21 16:41:33,915 INFO L138 BoogieDeclarations]: Found implementation of procedure write_side2_failed_history [2020-08-21 16:41:33,915 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2020-08-21 16:41:33,915 INFO L138 BoogieDeclarations]: Found implementation of procedure write_active_side_history [2020-08-21 16:41:33,916 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2020-08-21 16:41:33,916 INFO L138 BoogieDeclarations]: Found implementation of procedure write_manual_selection_history [2020-08-21 16:41:33,916 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2020-08-21 16:41:33,916 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-08-21 16:41:33,916 INFO L138 BoogieDeclarations]: Found implementation of procedure flip_the_side [2020-08-21 16:41:33,916 INFO L138 BoogieDeclarations]: Found implementation of procedure Console_task_each_pals_period [2020-08-21 16:41:33,917 INFO L138 BoogieDeclarations]: Found implementation of procedure Side1_activestandby_task_each_pals_period [2020-08-21 16:41:33,917 INFO L138 BoogieDeclarations]: Found implementation of procedure Side2_activestandby_task_each_pals_period [2020-08-21 16:41:33,917 INFO L138 BoogieDeclarations]: Found implementation of procedure Pendulum_prism_task_each_pals_period [2020-08-21 16:41:33,917 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-08-21 16:41:33,917 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 16:41:33,917 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-08-21 16:41:33,918 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 16:41:33,918 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-21 16:41:33,918 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-21 16:41:33,918 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-08-21 16:41:33,918 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-08-21 16:41:33,919 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-08-21 16:41:33,919 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 16:41:33,919 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 16:41:33,919 INFO L130 BoogieDeclarations]: Found specification of procedure write_side1_failed_history [2020-08-21 16:41:33,919 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2020-08-21 16:41:33,919 INFO L130 BoogieDeclarations]: Found specification of procedure write_side2_failed_history [2020-08-21 16:41:33,919 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2020-08-21 16:41:33,920 INFO L130 BoogieDeclarations]: Found specification of procedure write_active_side_history [2020-08-21 16:41:33,920 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2020-08-21 16:41:33,920 INFO L130 BoogieDeclarations]: Found specification of procedure write_manual_selection_history [2020-08-21 16:41:33,920 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2020-08-21 16:41:33,920 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-08-21 16:41:33,921 INFO L130 BoogieDeclarations]: Found specification of procedure flip_the_side [2020-08-21 16:41:33,921 INFO L130 BoogieDeclarations]: Found specification of procedure Console_task_each_pals_period [2020-08-21 16:41:33,921 INFO L130 BoogieDeclarations]: Found specification of procedure Side1_activestandby_task_each_pals_period [2020-08-21 16:41:33,921 INFO L130 BoogieDeclarations]: Found specification of procedure Side2_activestandby_task_each_pals_period [2020-08-21 16:41:33,921 INFO L130 BoogieDeclarations]: Found specification of procedure Pendulum_prism_task_each_pals_period [2020-08-21 16:41:33,921 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-08-21 16:41:33,921 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 16:41:33,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 16:41:33,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 16:41:34,797 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 16:41:34,798 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-21 16:41:34,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:41:34 BoogieIcfgContainer [2020-08-21 16:41:34,809 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 16:41:34,812 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 16:41:34,812 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 16:41:34,816 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 16:41:34,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 04:41:33" (1/3) ... [2020-08-21 16:41:34,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33c3b8f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:41:34, skipping insertion in model container [2020-08-21 16:41:34,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:41:33" (2/3) ... [2020-08-21 16:41:34,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33c3b8f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:41:34, skipping insertion in model container [2020-08-21 16:41:34,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:41:34" (3/3) ... [2020-08-21 16:41:34,822 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.1.ufo.BOUNDED-10.pals.c [2020-08-21 16:41:34,834 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 16:41:34,845 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 16:41:34,859 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 16:41:34,885 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 16:41:34,886 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 16:41:34,886 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 16:41:34,886 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 16:41:34,886 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 16:41:34,887 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 16:41:34,887 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 16:41:34,887 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 16:41:34,913 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states. [2020-08-21 16:41:34,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-08-21 16:41:34,924 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:41:34,925 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:41:34,926 INFO L427 AbstractCegarLoop]: === Iteration 1 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:41:34,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:41:34,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1541207534, now seen corresponding path program 1 times [2020-08-21 16:41:34,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:41:34,938 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [198565914] [2020-08-21 16:41:34,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:41:35,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:35,452 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-21 16:41:35,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:41:35,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:35,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:41:35,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:35,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 16:41:35,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:35,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:41:35,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:35,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:41:35,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:35,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 16:41:35,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:35,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:41:35,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:35,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 16:41:35,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:35,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:41:35,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:35,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:41:35,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [198565914] [2020-08-21 16:41:35,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:41:35,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 16:41:35,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385545040] [2020-08-21 16:41:35,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 16:41:35,743 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:41:35,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 16:41:35,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-08-21 16:41:35,761 INFO L87 Difference]: Start difference. First operand 243 states. Second operand 9 states. [2020-08-21 16:41:37,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:41:37,274 INFO L93 Difference]: Finished difference Result 463 states and 711 transitions. [2020-08-21 16:41:37,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 16:41:37,279 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 71 [2020-08-21 16:41:37,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:41:37,302 INFO L225 Difference]: With dead ends: 463 [2020-08-21 16:41:37,303 INFO L226 Difference]: Without dead ends: 238 [2020-08-21 16:41:37,314 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2020-08-21 16:41:37,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-08-21 16:41:37,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2020-08-21 16:41:37,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-08-21 16:41:37,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 343 transitions. [2020-08-21 16:41:37,433 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 343 transitions. Word has length 71 [2020-08-21 16:41:37,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:41:37,435 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 343 transitions. [2020-08-21 16:41:37,436 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 16:41:37,436 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 343 transitions. [2020-08-21 16:41:37,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-08-21 16:41:37,453 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:41:37,453 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:41:37,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 16:41:37,454 INFO L427 AbstractCegarLoop]: === Iteration 2 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:41:37,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:41:37,454 INFO L82 PathProgramCache]: Analyzing trace with hash -508602450, now seen corresponding path program 1 times [2020-08-21 16:41:37,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:41:37,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [828437635] [2020-08-21 16:41:37,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:41:37,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:37,694 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-21 16:41:37,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:41:37,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:37,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:41:37,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:37,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 16:41:37,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:37,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:41:37,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:37,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:41:37,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:37,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 16:41:37,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:37,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:41:37,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:37,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 16:41:37,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:37,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:41:37,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:37,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:41:37,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [828437635] [2020-08-21 16:41:37,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:41:37,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-21 16:41:37,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794714918] [2020-08-21 16:41:37,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-21 16:41:37,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:41:37,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-21 16:41:37,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-08-21 16:41:37,935 INFO L87 Difference]: Start difference. First operand 238 states and 343 transitions. Second operand 14 states. [2020-08-21 16:41:38,114 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-21 16:41:38,377 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-21 16:41:38,533 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-21 16:41:41,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:41:41,111 INFO L93 Difference]: Finished difference Result 467 states and 671 transitions. [2020-08-21 16:41:41,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 16:41:41,112 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 71 [2020-08-21 16:41:41,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:41:41,121 INFO L225 Difference]: With dead ends: 467 [2020-08-21 16:41:41,121 INFO L226 Difference]: Without dead ends: 248 [2020-08-21 16:41:41,128 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-08-21 16:41:41,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-08-21 16:41:41,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 238. [2020-08-21 16:41:41,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-08-21 16:41:41,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 331 transitions. [2020-08-21 16:41:41,199 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 331 transitions. Word has length 71 [2020-08-21 16:41:41,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:41:41,199 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 331 transitions. [2020-08-21 16:41:41,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-21 16:41:41,200 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 331 transitions. [2020-08-21 16:41:41,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-21 16:41:41,202 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:41:41,202 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:41:41,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 16:41:41,202 INFO L427 AbstractCegarLoop]: === Iteration 3 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:41:41,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:41:41,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1489036951, now seen corresponding path program 1 times [2020-08-21 16:41:41,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:41:41,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1265776821] [2020-08-21 16:41:41,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:41:41,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:41,476 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-21 16:41:41,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:41:41,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:41,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:41:41,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:41,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:41:41,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:41,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 16:41:41,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:41,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:41:41,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:41,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 16:41:41,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:41,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:41:41,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:41,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 16:41:41,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:41,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:41:41,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:41,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:41:41,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1265776821] [2020-08-21 16:41:41,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:41:41,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 16:41:41,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412340259] [2020-08-21 16:41:41,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 16:41:41,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:41:41,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 16:41:41,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-08-21 16:41:41,687 INFO L87 Difference]: Start difference. First operand 238 states and 331 transitions. Second operand 11 states. [2020-08-21 16:41:42,689 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-21 16:41:42,822 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-21 16:41:43,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:41:43,945 INFO L93 Difference]: Finished difference Result 456 states and 647 transitions. [2020-08-21 16:41:43,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 16:41:43,946 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 82 [2020-08-21 16:41:43,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:41:43,949 INFO L225 Difference]: With dead ends: 456 [2020-08-21 16:41:43,949 INFO L226 Difference]: Without dead ends: 242 [2020-08-21 16:41:43,951 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=115, Invalid=227, Unknown=0, NotChecked=0, Total=342 [2020-08-21 16:41:43,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-08-21 16:41:43,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2020-08-21 16:41:43,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-08-21 16:41:43,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 334 transitions. [2020-08-21 16:41:43,988 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 334 transitions. Word has length 82 [2020-08-21 16:41:43,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:41:43,989 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 334 transitions. [2020-08-21 16:41:43,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 16:41:43,989 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 334 transitions. [2020-08-21 16:41:43,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-08-21 16:41:43,991 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:41:43,992 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:41:43,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 16:41:43,992 INFO L427 AbstractCegarLoop]: === Iteration 4 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:41:43,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:41:43,993 INFO L82 PathProgramCache]: Analyzing trace with hash -2124611218, now seen corresponding path program 1 times [2020-08-21 16:41:43,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:41:43,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [286896440] [2020-08-21 16:41:43,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:41:44,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:44,224 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-21 16:41:44,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:41:44,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:44,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:41:44,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:44,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:41:44,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:44,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 16:41:44,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:44,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:41:44,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:44,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 16:41:44,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:44,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:41:44,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:44,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 16:41:44,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:44,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:41:44,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:44,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 16:41:44,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:44,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:41:44,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:44,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-21 16:41:44,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:44,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-21 16:41:44,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:44,572 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-21 16:41:44,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [286896440] [2020-08-21 16:41:44,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:41:44,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-08-21 16:41:44,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548736049] [2020-08-21 16:41:44,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 16:41:44,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:41:44,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 16:41:44,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-08-21 16:41:44,576 INFO L87 Difference]: Start difference. First operand 242 states and 334 transitions. Second operand 16 states. [2020-08-21 16:41:44,765 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-21 16:41:46,693 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-21 16:41:48,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:41:48,507 INFO L93 Difference]: Finished difference Result 551 states and 760 transitions. [2020-08-21 16:41:48,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-21 16:41:48,508 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 104 [2020-08-21 16:41:48,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:41:48,514 INFO L225 Difference]: With dead ends: 551 [2020-08-21 16:41:48,514 INFO L226 Difference]: Without dead ends: 333 [2020-08-21 16:41:48,516 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=299, Invalid=891, Unknown=0, NotChecked=0, Total=1190 [2020-08-21 16:41:48,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2020-08-21 16:41:48,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 332. [2020-08-21 16:41:48,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2020-08-21 16:41:48,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 449 transitions. [2020-08-21 16:41:48,558 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 449 transitions. Word has length 104 [2020-08-21 16:41:48,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:41:48,559 INFO L479 AbstractCegarLoop]: Abstraction has 332 states and 449 transitions. [2020-08-21 16:41:48,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 16:41:48,559 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 449 transitions. [2020-08-21 16:41:48,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-08-21 16:41:48,561 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:41:48,561 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:41:48,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 16:41:48,562 INFO L427 AbstractCegarLoop]: === Iteration 5 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:41:48,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:41:48,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1802435784, now seen corresponding path program 1 times [2020-08-21 16:41:48,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:41:48,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [999983693] [2020-08-21 16:41:48,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:41:48,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:48,741 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-21 16:41:48,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:41:48,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:48,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:41:48,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:48,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:41:48,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:48,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 16:41:48,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:48,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:41:48,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:48,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 16:41:48,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:48,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:41:48,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:48,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 16:41:48,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:48,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:41:48,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:48,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 16:41:48,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:48,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:41:48,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:49,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:41:49,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:49,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-21 16:41:49,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:49,071 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-21 16:41:49,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [999983693] [2020-08-21 16:41:49,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:41:49,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-08-21 16:41:49,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307478758] [2020-08-21 16:41:49,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 16:41:49,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:41:49,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 16:41:49,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-08-21 16:41:49,075 INFO L87 Difference]: Start difference. First operand 332 states and 449 transitions. Second operand 16 states. [2020-08-21 16:41:49,250 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-21 16:41:50,989 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-21 16:41:52,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:41:52,919 INFO L93 Difference]: Finished difference Result 557 states and 768 transitions. [2020-08-21 16:41:52,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-21 16:41:52,919 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 105 [2020-08-21 16:41:52,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:41:52,924 INFO L225 Difference]: With dead ends: 557 [2020-08-21 16:41:52,924 INFO L226 Difference]: Without dead ends: 336 [2020-08-21 16:41:52,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=299, Invalid=891, Unknown=0, NotChecked=0, Total=1190 [2020-08-21 16:41:52,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2020-08-21 16:41:52,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 332. [2020-08-21 16:41:52,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2020-08-21 16:41:52,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 449 transitions. [2020-08-21 16:41:52,962 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 449 transitions. Word has length 105 [2020-08-21 16:41:52,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:41:52,963 INFO L479 AbstractCegarLoop]: Abstraction has 332 states and 449 transitions. [2020-08-21 16:41:52,963 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 16:41:52,963 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 449 transitions. [2020-08-21 16:41:52,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-08-21 16:41:52,965 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:41:52,965 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:41:52,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 16:41:52,966 INFO L427 AbstractCegarLoop]: === Iteration 6 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:41:52,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:41:52,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1848316150, now seen corresponding path program 1 times [2020-08-21 16:41:52,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:41:52,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1148491157] [2020-08-21 16:41:52,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:41:52,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:53,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:41:53,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:53,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:41:53,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:53,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:41:53,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:53,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 16:41:53,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:53,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:41:53,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:53,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 16:41:53,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:53,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:41:53,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:53,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 16:41:53,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:53,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:41:53,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:53,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 16:41:53,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:53,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:41:53,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:53,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 16:41:53,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:53,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-21 16:41:53,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:53,433 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-21 16:41:53,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1148491157] [2020-08-21 16:41:53,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:41:53,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 16:41:53,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404236773] [2020-08-21 16:41:53,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 16:41:53,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:41:53,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 16:41:53,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-08-21 16:41:53,438 INFO L87 Difference]: Start difference. First operand 332 states and 449 transitions. Second operand 12 states. [2020-08-21 16:41:54,185 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-21 16:41:57,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:41:57,080 INFO L93 Difference]: Finished difference Result 791 states and 1096 transitions. [2020-08-21 16:41:57,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-21 16:41:57,081 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 107 [2020-08-21 16:41:57,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:41:57,086 INFO L225 Difference]: With dead ends: 791 [2020-08-21 16:41:57,086 INFO L226 Difference]: Without dead ends: 570 [2020-08-21 16:41:57,088 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2020-08-21 16:41:57,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2020-08-21 16:41:57,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 552. [2020-08-21 16:41:57,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 552 states. [2020-08-21 16:41:57,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 760 transitions. [2020-08-21 16:41:57,159 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 760 transitions. Word has length 107 [2020-08-21 16:41:57,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:41:57,160 INFO L479 AbstractCegarLoop]: Abstraction has 552 states and 760 transitions. [2020-08-21 16:41:57,160 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 16:41:57,160 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 760 transitions. [2020-08-21 16:41:57,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-08-21 16:41:57,162 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:41:57,163 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:41:57,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 16:41:57,163 INFO L427 AbstractCegarLoop]: === Iteration 7 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:41:57,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:41:57,164 INFO L82 PathProgramCache]: Analyzing trace with hash -723997746, now seen corresponding path program 1 times [2020-08-21 16:41:57,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:41:57,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [475775381] [2020-08-21 16:41:57,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:41:57,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:57,362 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-21 16:41:57,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:41:57,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:57,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:41:57,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:57,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:41:57,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:57,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 16:41:57,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:57,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:41:57,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:57,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 16:41:57,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:57,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:41:57,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:57,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-21 16:41:57,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:57,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:41:57,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:57,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-21 16:41:57,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:57,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:41:57,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:57,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 16:41:57,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:57,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-21 16:41:57,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:57,600 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-21 16:41:57,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [475775381] [2020-08-21 16:41:57,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:41:57,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 16:41:57,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669128215] [2020-08-21 16:41:57,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 16:41:57,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:41:57,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 16:41:57,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-08-21 16:41:57,603 INFO L87 Difference]: Start difference. First operand 552 states and 760 transitions. Second operand 12 states. [2020-08-21 16:41:57,758 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-21 16:42:01,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:42:01,177 INFO L93 Difference]: Finished difference Result 968 states and 1350 transitions. [2020-08-21 16:42:01,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-21 16:42:01,178 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 109 [2020-08-21 16:42:01,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:42:01,183 INFO L225 Difference]: With dead ends: 968 [2020-08-21 16:42:01,184 INFO L226 Difference]: Without dead ends: 570 [2020-08-21 16:42:01,186 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2020-08-21 16:42:01,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2020-08-21 16:42:01,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 552. [2020-08-21 16:42:01,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 552 states. [2020-08-21 16:42:01,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 758 transitions. [2020-08-21 16:42:01,247 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 758 transitions. Word has length 109 [2020-08-21 16:42:01,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:42:01,248 INFO L479 AbstractCegarLoop]: Abstraction has 552 states and 758 transitions. [2020-08-21 16:42:01,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 16:42:01,248 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 758 transitions. [2020-08-21 16:42:01,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-21 16:42:01,250 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:42:01,250 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:42:01,250 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 16:42:01,250 INFO L427 AbstractCegarLoop]: === Iteration 8 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:42:01,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:42:01,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1067489879, now seen corresponding path program 1 times [2020-08-21 16:42:01,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:42:01,251 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1562289859] [2020-08-21 16:42:01,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:42:01,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:01,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:42:01,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:01,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:42:01,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:01,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:42:01,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:01,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 16:42:01,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:01,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:42:01,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:01,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 16:42:01,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:01,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:42:01,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:01,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 16:42:01,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:01,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:42:01,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:01,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 16:42:01,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:01,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:42:01,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:01,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 16:42:01,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:01,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-21 16:42:01,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:01,676 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-21 16:42:01,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1562289859] [2020-08-21 16:42:01,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:42:01,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 16:42:01,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922769144] [2020-08-21 16:42:01,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 16:42:01,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:42:01,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 16:42:01,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-08-21 16:42:01,678 INFO L87 Difference]: Start difference. First operand 552 states and 758 transitions. Second operand 12 states. [2020-08-21 16:42:02,784 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-21 16:42:05,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:42:05,295 INFO L93 Difference]: Finished difference Result 1311 states and 1841 transitions. [2020-08-21 16:42:05,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-21 16:42:05,296 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 108 [2020-08-21 16:42:05,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:42:05,302 INFO L225 Difference]: With dead ends: 1311 [2020-08-21 16:42:05,302 INFO L226 Difference]: Without dead ends: 913 [2020-08-21 16:42:05,305 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2020-08-21 16:42:05,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2020-08-21 16:42:05,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 907. [2020-08-21 16:42:05,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 907 states. [2020-08-21 16:42:05,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 1263 transitions. [2020-08-21 16:42:05,399 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 1263 transitions. Word has length 108 [2020-08-21 16:42:05,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:42:05,400 INFO L479 AbstractCegarLoop]: Abstraction has 907 states and 1263 transitions. [2020-08-21 16:42:05,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 16:42:05,400 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 1263 transitions. [2020-08-21 16:42:05,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-21 16:42:05,401 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:42:05,402 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:42:05,402 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 16:42:05,402 INFO L427 AbstractCegarLoop]: === Iteration 9 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:42:05,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:42:05,403 INFO L82 PathProgramCache]: Analyzing trace with hash -212373799, now seen corresponding path program 1 times [2020-08-21 16:42:05,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:42:05,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [719960759] [2020-08-21 16:42:05,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:42:05,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:05,615 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-21 16:42:05,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:42:05,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:05,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:42:05,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:05,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:42:05,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:05,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 16:42:05,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:05,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:42:05,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:05,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 16:42:05,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:05,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:42:05,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:05,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 16:42:05,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:05,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:42:05,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:05,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 16:42:05,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:05,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:42:05,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:05,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 16:42:05,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:05,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-21 16:42:05,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:05,951 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-21 16:42:05,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [719960759] [2020-08-21 16:42:05,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:42:05,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-21 16:42:05,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845828203] [2020-08-21 16:42:05,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 16:42:05,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:42:05,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 16:42:05,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-21 16:42:05,954 INFO L87 Difference]: Start difference. First operand 907 states and 1263 transitions. Second operand 13 states. [2020-08-21 16:42:07,382 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-21 16:42:07,513 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-21 16:42:08,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:42:08,519 INFO L93 Difference]: Finished difference Result 1662 states and 2348 transitions. [2020-08-21 16:42:08,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 16:42:08,520 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 108 [2020-08-21 16:42:08,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:42:08,527 INFO L225 Difference]: With dead ends: 1662 [2020-08-21 16:42:08,528 INFO L226 Difference]: Without dead ends: 927 [2020-08-21 16:42:08,531 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2020-08-21 16:42:08,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2020-08-21 16:42:08,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 927. [2020-08-21 16:42:08,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 927 states. [2020-08-21 16:42:08,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 1279 transitions. [2020-08-21 16:42:08,630 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 1279 transitions. Word has length 108 [2020-08-21 16:42:08,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:42:08,630 INFO L479 AbstractCegarLoop]: Abstraction has 927 states and 1279 transitions. [2020-08-21 16:42:08,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 16:42:08,630 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 1279 transitions. [2020-08-21 16:42:08,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-08-21 16:42:08,632 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:42:08,633 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:42:08,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 16:42:08,633 INFO L427 AbstractCegarLoop]: === Iteration 10 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:42:08,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:42:08,634 INFO L82 PathProgramCache]: Analyzing trace with hash -1747753163, now seen corresponding path program 1 times [2020-08-21 16:42:08,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:42:08,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1182819497] [2020-08-21 16:42:08,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:42:08,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:08,816 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-21 16:42:08,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:42:08,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:08,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:42:08,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:08,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:42:08,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:08,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 16:42:08,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:08,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:42:08,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:08,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 16:42:08,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:08,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:42:08,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:08,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 16:42:08,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:08,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:42:08,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:09,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 16:42:09,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:09,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:42:09,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:09,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 16:42:09,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:09,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-21 16:42:09,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:09,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-21 16:42:09,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:09,089 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-21 16:42:09,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1182819497] [2020-08-21 16:42:09,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:42:09,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-21 16:42:09,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747010584] [2020-08-21 16:42:09,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 16:42:09,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:42:09,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 16:42:09,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-21 16:42:09,093 INFO L87 Difference]: Start difference. First operand 927 states and 1279 transitions. Second operand 13 states. [2020-08-21 16:42:10,678 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-21 16:42:10,805 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-21 16:42:11,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:42:11,681 INFO L93 Difference]: Finished difference Result 1702 states and 2392 transitions. [2020-08-21 16:42:11,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 16:42:11,682 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 116 [2020-08-21 16:42:11,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:42:11,688 INFO L225 Difference]: With dead ends: 1702 [2020-08-21 16:42:11,688 INFO L226 Difference]: Without dead ends: 947 [2020-08-21 16:42:11,692 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2020-08-21 16:42:11,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2020-08-21 16:42:11,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 947. [2020-08-21 16:42:11,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 947 states. [2020-08-21 16:42:11,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 947 states to 947 states and 1295 transitions. [2020-08-21 16:42:11,788 INFO L78 Accepts]: Start accepts. Automaton has 947 states and 1295 transitions. Word has length 116 [2020-08-21 16:42:11,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:42:11,788 INFO L479 AbstractCegarLoop]: Abstraction has 947 states and 1295 transitions. [2020-08-21 16:42:11,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 16:42:11,789 INFO L276 IsEmpty]: Start isEmpty. Operand 947 states and 1295 transitions. [2020-08-21 16:42:11,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-08-21 16:42:11,791 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:42:11,791 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:42:11,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 16:42:11,792 INFO L427 AbstractCegarLoop]: === Iteration 11 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:42:11,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:42:11,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1289634625, now seen corresponding path program 1 times [2020-08-21 16:42:11,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:42:11,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [270159105] [2020-08-21 16:42:11,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:42:11,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:11,987 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-21 16:42:11,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:42:11,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:11,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:42:11,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:11,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:42:11,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:12,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 16:42:12,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:12,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:42:12,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:12,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 16:42:12,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:12,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:42:12,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:12,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 16:42:12,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:12,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:42:12,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:12,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 16:42:12,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:12,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:42:12,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:12,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 16:42:12,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:12,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-21 16:42:12,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:12,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-21 16:42:12,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:12,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-21 16:42:12,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:12,223 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-21 16:42:12,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [270159105] [2020-08-21 16:42:12,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:42:12,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-21 16:42:12,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367265767] [2020-08-21 16:42:12,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 16:42:12,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:42:12,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 16:42:12,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-21 16:42:12,226 INFO L87 Difference]: Start difference. First operand 947 states and 1295 transitions. Second operand 13 states. [2020-08-21 16:42:13,765 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-21 16:42:13,908 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-21 16:42:14,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:42:14,631 INFO L93 Difference]: Finished difference Result 1738 states and 2408 transitions. [2020-08-21 16:42:14,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 16:42:14,632 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 124 [2020-08-21 16:42:14,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:42:14,638 INFO L225 Difference]: With dead ends: 1738 [2020-08-21 16:42:14,639 INFO L226 Difference]: Without dead ends: 963 [2020-08-21 16:42:14,643 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2020-08-21 16:42:14,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2020-08-21 16:42:14,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 963. [2020-08-21 16:42:14,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 963 states. [2020-08-21 16:42:14,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1307 transitions. [2020-08-21 16:42:14,761 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1307 transitions. Word has length 124 [2020-08-21 16:42:14,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:42:14,761 INFO L479 AbstractCegarLoop]: Abstraction has 963 states and 1307 transitions. [2020-08-21 16:42:14,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 16:42:14,762 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1307 transitions. [2020-08-21 16:42:14,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-08-21 16:42:14,765 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:42:14,765 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:42:14,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 16:42:14,766 INFO L427 AbstractCegarLoop]: === Iteration 12 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:42:14,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:42:14,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1471497757, now seen corresponding path program 1 times [2020-08-21 16:42:14,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:42:14,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1987011076] [2020-08-21 16:42:14,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:42:14,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:15,024 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-21 16:42:15,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:42:15,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:15,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:42:15,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:15,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:42:15,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:15,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 16:42:15,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:15,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:42:15,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:15,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 16:42:15,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:15,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:42:15,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:15,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 16:42:15,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:15,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:42:15,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:15,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 16:42:15,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:15,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:42:15,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:15,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 16:42:15,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:15,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-21 16:42:15,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:15,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-21 16:42:15,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:15,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-21 16:42:15,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:15,464 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-21 16:42:15,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1987011076] [2020-08-21 16:42:15,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:42:15,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-08-21 16:42:15,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238156187] [2020-08-21 16:42:15,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-21 16:42:15,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:42:15,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-21 16:42:15,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2020-08-21 16:42:15,469 INFO L87 Difference]: Start difference. First operand 963 states and 1307 transitions. Second operand 18 states. [2020-08-21 16:42:15,910 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 133 [2020-08-21 16:42:16,149 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-08-21 16:42:16,678 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-08-21 16:42:18,041 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-21 16:42:18,201 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-21 16:42:18,356 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-21 16:42:19,993 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-08-21 16:42:20,149 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-21 16:42:22,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:42:22,323 INFO L93 Difference]: Finished difference Result 2594 states and 3626 transitions. [2020-08-21 16:42:22,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-21 16:42:22,324 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 124 [2020-08-21 16:42:22,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:42:22,334 INFO L225 Difference]: With dead ends: 2594 [2020-08-21 16:42:22,334 INFO L226 Difference]: Without dead ends: 1791 [2020-08-21 16:42:22,338 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=410, Invalid=1230, Unknown=0, NotChecked=0, Total=1640 [2020-08-21 16:42:22,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1791 states. [2020-08-21 16:42:22,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1791 to 1549. [2020-08-21 16:42:22,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1549 states. [2020-08-21 16:42:22,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1549 states to 1549 states and 2123 transitions. [2020-08-21 16:42:22,535 INFO L78 Accepts]: Start accepts. Automaton has 1549 states and 2123 transitions. Word has length 124 [2020-08-21 16:42:22,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:42:22,536 INFO L479 AbstractCegarLoop]: Abstraction has 1549 states and 2123 transitions. [2020-08-21 16:42:22,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-21 16:42:22,536 INFO L276 IsEmpty]: Start isEmpty. Operand 1549 states and 2123 transitions. [2020-08-21 16:42:22,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-08-21 16:42:22,539 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:42:22,539 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:42:22,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 16:42:22,540 INFO L427 AbstractCegarLoop]: === Iteration 13 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:42:22,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:42:22,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1891846081, now seen corresponding path program 1 times [2020-08-21 16:42:22,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:42:22,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2082319365] [2020-08-21 16:42:22,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:42:22,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:22,840 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-21 16:42:22,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:42:22,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:22,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:42:22,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:22,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:42:22,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:22,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 16:42:22,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:22,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:42:22,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:22,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 16:42:22,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:22,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:42:22,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:22,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 16:42:22,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:22,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:42:22,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:23,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 16:42:23,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:23,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:42:23,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:23,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 16:42:23,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:23,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-21 16:42:23,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:23,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-21 16:42:23,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:23,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-21 16:42:23,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:23,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-21 16:42:23,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:23,069 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-08-21 16:42:23,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2082319365] [2020-08-21 16:42:23,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:42:23,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-21 16:42:23,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629586902] [2020-08-21 16:42:23,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 16:42:23,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:42:23,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 16:42:23,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-21 16:42:23,071 INFO L87 Difference]: Start difference. First operand 1549 states and 2123 transitions. Second operand 13 states. [2020-08-21 16:42:24,566 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-21 16:42:24,701 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-21 16:42:25,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:42:25,663 INFO L93 Difference]: Finished difference Result 2816 states and 3937 transitions. [2020-08-21 16:42:25,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 16:42:25,664 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 131 [2020-08-21 16:42:25,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:42:25,677 INFO L225 Difference]: With dead ends: 2816 [2020-08-21 16:42:25,678 INFO L226 Difference]: Without dead ends: 1589 [2020-08-21 16:42:25,689 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2020-08-21 16:42:25,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1589 states. [2020-08-21 16:42:25,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1589 to 1589. [2020-08-21 16:42:25,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1589 states. [2020-08-21 16:42:25,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1589 states to 1589 states and 2155 transitions. [2020-08-21 16:42:25,968 INFO L78 Accepts]: Start accepts. Automaton has 1589 states and 2155 transitions. Word has length 131 [2020-08-21 16:42:25,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:42:25,969 INFO L479 AbstractCegarLoop]: Abstraction has 1589 states and 2155 transitions. [2020-08-21 16:42:25,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 16:42:25,970 INFO L276 IsEmpty]: Start isEmpty. Operand 1589 states and 2155 transitions. [2020-08-21 16:42:25,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-08-21 16:42:25,973 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:42:25,974 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:42:25,974 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-21 16:42:25,974 INFO L427 AbstractCegarLoop]: === Iteration 14 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:42:25,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:42:25,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1235243833, now seen corresponding path program 1 times [2020-08-21 16:42:25,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:42:25,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1200872590] [2020-08-21 16:42:25,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:42:26,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:26,249 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-21 16:42:26,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:42:26,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:26,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:42:26,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:26,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:42:26,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:26,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 16:42:26,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:26,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:42:26,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:26,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 16:42:26,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:26,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:42:26,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:26,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 16:42:26,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:26,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:42:26,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:26,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-21 16:42:26,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:26,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:42:26,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:26,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 16:42:26,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:26,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-21 16:42:26,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:26,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-21 16:42:26,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:26,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-08-21 16:42:26,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:26,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-21 16:42:26,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:26,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-21 16:42:26,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:42:26,597 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-08-21 16:42:26,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1200872590] [2020-08-21 16:42:26,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:42:26,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 16:42:26,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185900977] [2020-08-21 16:42:26,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 16:42:26,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:42:26,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 16:42:26,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-08-21 16:42:26,601 INFO L87 Difference]: Start difference. First operand 1589 states and 2155 transitions. Second operand 12 states. [2020-08-21 16:42:26,801 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-21 16:42:28,295 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-08-21 16:42:28,516 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-08-21 16:42:28,902 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 86