/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 23:41:13,764 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 23:41:13,766 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 23:41:13,791 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 23:41:13,792 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 23:41:13,793 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 23:41:13,794 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 23:41:13,796 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 23:41:13,797 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 23:41:13,798 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 23:41:13,799 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 23:41:13,800 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 23:41:13,800 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 23:41:13,801 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 23:41:13,802 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 23:41:13,803 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 23:41:13,804 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 23:41:13,805 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 23:41:13,807 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 23:41:13,809 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 23:41:13,810 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 23:41:13,812 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 23:41:13,813 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 23:41:13,814 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 23:41:13,816 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 23:41:13,816 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 23:41:13,817 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 23:41:13,817 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 23:41:13,818 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 23:41:13,819 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 23:41:13,819 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 23:41:13,820 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 23:41:13,821 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 23:41:13,821 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 23:41:13,822 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 23:41:13,823 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 23:41:13,823 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 23:41:13,823 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 23:41:13,824 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 23:41:13,824 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 23:41:13,825 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 23:41:13,826 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 23:41:13,850 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 23:41:13,850 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 23:41:13,852 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 23:41:13,852 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 23:41:13,852 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 23:41:13,852 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 23:41:13,852 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 23:41:13,853 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 23:41:13,853 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 23:41:13,853 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 23:41:13,853 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 23:41:13,853 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 23:41:13,854 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 23:41:13,854 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 23:41:13,854 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 23:41:13,854 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 23:41:13,854 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 23:41:13,855 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 23:41:13,855 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 23:41:13,855 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 23:41:13,855 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 23:41:13,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 23:41:13,856 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 23:41:13,856 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 23:41:13,856 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 23:41:13,856 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 23:41:13,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 23:41:13,857 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 23:41:13,857 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 23:41:13,857 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; [2020-08-18 23:41:14,202 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 23:41:14,220 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 23:41:14,223 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 23:41:14,225 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 23:41:14,226 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 23:41:14,227 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.UNBOUNDED.pals.c [2020-08-18 23:41:14,316 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6713d3cd9/d0d1ae6997ac4c82a82a4914239b6e17/FLAGb5dfa68f5 [2020-08-18 23:41:14,860 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 23:41:14,861 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.UNBOUNDED.pals.c [2020-08-18 23:41:14,874 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6713d3cd9/d0d1ae6997ac4c82a82a4914239b6e17/FLAGb5dfa68f5 [2020-08-18 23:41:15,169 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6713d3cd9/d0d1ae6997ac4c82a82a4914239b6e17 [2020-08-18 23:41:15,178 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 23:41:15,179 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 23:41:15,180 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 23:41:15,180 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 23:41:15,184 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 23:41:15,185 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:41:15" (1/1) ... [2020-08-18 23:41:15,188 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@186d1561 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:41:15, skipping insertion in model container [2020-08-18 23:41:15,189 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:41:15" (1/1) ... [2020-08-18 23:41:15,197 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 23:41:15,263 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 23:41:15,607 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 23:41:15,617 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 23:41:15,830 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 23:41:15,852 INFO L208 MainTranslator]: Completed translation [2020-08-18 23:41:15,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:41:15 WrapperNode [2020-08-18 23:41:15,853 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 23:41:15,854 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 23:41:15,854 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 23:41:15,854 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 23:41:15,866 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:41:15" (1/1) ... [2020-08-18 23:41:15,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:41:15" (1/1) ... [2020-08-18 23:41:15,880 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:41:15" (1/1) ... [2020-08-18 23:41:15,881 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:41:15" (1/1) ... [2020-08-18 23:41:15,900 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:41:15" (1/1) ... [2020-08-18 23:41:15,914 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:41:15" (1/1) ... [2020-08-18 23:41:15,919 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:41:15" (1/1) ... [2020-08-18 23:41:15,925 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 23:41:15,926 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 23:41:15,926 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 23:41:15,926 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 23:41:15,927 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:41:15" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 23:41:15,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 23:41:15,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 23:41:15,993 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 23:41:15,993 INFO L138 BoogieDeclarations]: Found implementation of procedure write_side1_failed_history [2020-08-18 23:41:15,993 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2020-08-18 23:41:15,994 INFO L138 BoogieDeclarations]: Found implementation of procedure write_side2_failed_history [2020-08-18 23:41:15,994 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2020-08-18 23:41:15,994 INFO L138 BoogieDeclarations]: Found implementation of procedure write_active_side_history [2020-08-18 23:41:15,994 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2020-08-18 23:41:15,994 INFO L138 BoogieDeclarations]: Found implementation of procedure write_manual_selection_history [2020-08-18 23:41:15,994 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2020-08-18 23:41:15,995 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-08-18 23:41:15,995 INFO L138 BoogieDeclarations]: Found implementation of procedure flip_the_side [2020-08-18 23:41:15,995 INFO L138 BoogieDeclarations]: Found implementation of procedure Console_task_each_pals_period [2020-08-18 23:41:15,995 INFO L138 BoogieDeclarations]: Found implementation of procedure Side1_activestandby_task_each_pals_period [2020-08-18 23:41:15,996 INFO L138 BoogieDeclarations]: Found implementation of procedure Side2_activestandby_task_each_pals_period [2020-08-18 23:41:15,996 INFO L138 BoogieDeclarations]: Found implementation of procedure Pendulum_prism_task_each_pals_period [2020-08-18 23:41:15,996 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-08-18 23:41:15,996 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 23:41:15,997 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-08-18 23:41:15,997 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 23:41:15,997 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-18 23:41:15,997 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-18 23:41:15,997 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-08-18 23:41:15,998 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-08-18 23:41:15,998 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-08-18 23:41:15,999 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 23:41:15,999 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 23:41:15,999 INFO L130 BoogieDeclarations]: Found specification of procedure write_side1_failed_history [2020-08-18 23:41:15,999 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2020-08-18 23:41:16,000 INFO L130 BoogieDeclarations]: Found specification of procedure write_side2_failed_history [2020-08-18 23:41:16,000 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2020-08-18 23:41:16,000 INFO L130 BoogieDeclarations]: Found specification of procedure write_active_side_history [2020-08-18 23:41:16,000 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2020-08-18 23:41:16,000 INFO L130 BoogieDeclarations]: Found specification of procedure write_manual_selection_history [2020-08-18 23:41:16,000 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2020-08-18 23:41:16,001 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-08-18 23:41:16,001 INFO L130 BoogieDeclarations]: Found specification of procedure flip_the_side [2020-08-18 23:41:16,001 INFO L130 BoogieDeclarations]: Found specification of procedure Console_task_each_pals_period [2020-08-18 23:41:16,001 INFO L130 BoogieDeclarations]: Found specification of procedure Side1_activestandby_task_each_pals_period [2020-08-18 23:41:16,001 INFO L130 BoogieDeclarations]: Found specification of procedure Side2_activestandby_task_each_pals_period [2020-08-18 23:41:16,001 INFO L130 BoogieDeclarations]: Found specification of procedure Pendulum_prism_task_each_pals_period [2020-08-18 23:41:16,002 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-08-18 23:41:16,002 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 23:41:16,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 23:41:16,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 23:41:16,836 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 23:41:16,836 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-18 23:41:16,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:41:16 BoogieIcfgContainer [2020-08-18 23:41:16,843 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 23:41:16,845 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 23:41:16,845 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 23:41:16,848 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 23:41:16,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 11:41:15" (1/3) ... [2020-08-18 23:41:16,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43698e25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:41:16, skipping insertion in model container [2020-08-18 23:41:16,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:41:15" (2/3) ... [2020-08-18 23:41:16,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43698e25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:41:16, skipping insertion in model container [2020-08-18 23:41:16,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:41:16" (3/3) ... [2020-08-18 23:41:16,853 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.1.ufo.UNBOUNDED.pals.c [2020-08-18 23:41:16,866 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 23:41:16,876 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 23:41:16,891 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 23:41:16,920 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 23:41:16,920 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 23:41:16,921 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 23:41:16,921 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 23:41:16,921 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 23:41:16,921 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 23:41:16,922 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 23:41:16,922 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 23:41:16,953 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states. [2020-08-18 23:41:16,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-08-18 23:41:16,965 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:41:16,966 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] [2020-08-18 23:41:16,967 INFO L427 AbstractCegarLoop]: === Iteration 1 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:41:16,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:41:16,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1549655252, now seen corresponding path program 1 times [2020-08-18 23:41:16,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:41:16,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [355368309] [2020-08-18 23:41:16,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:41:17,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:17,580 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-18 23:41:17,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:41:17,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:17,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:41:17,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:17,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 23:41:17,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:17,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:41:17,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:17,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:17,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:17,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 23:41:17,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:17,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:17,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:17,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 23:41:17,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:17,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:17,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:17,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:41:17,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [355368309] [2020-08-18 23:41:17,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:41:17,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 23:41:17,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141322543] [2020-08-18 23:41:17,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 23:41:17,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:41:17,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 23:41:17,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-08-18 23:41:17,970 INFO L87 Difference]: Start difference. First operand 242 states. Second operand 9 states. [2020-08-18 23:41:19,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:41:19,614 INFO L93 Difference]: Finished difference Result 456 states and 705 transitions. [2020-08-18 23:41:19,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 23:41:19,616 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 71 [2020-08-18 23:41:19,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:41:19,631 INFO L225 Difference]: With dead ends: 456 [2020-08-18 23:41:19,631 INFO L226 Difference]: Without dead ends: 237 [2020-08-18 23:41:19,640 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 [2020-08-18 23:41:19,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-08-18 23:41:19,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2020-08-18 23:41:19,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-08-18 23:41:19,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 342 transitions. [2020-08-18 23:41:19,761 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 342 transitions. Word has length 71 [2020-08-18 23:41:19,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:41:19,762 INFO L479 AbstractCegarLoop]: Abstraction has 237 states and 342 transitions. [2020-08-18 23:41:19,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 23:41:19,762 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 342 transitions. [2020-08-18 23:41:19,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-08-18 23:41:19,766 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:41:19,766 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:41:19,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 23:41:19,767 INFO L427 AbstractCegarLoop]: === Iteration 2 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:41:19,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:41:19,767 INFO L82 PathProgramCache]: Analyzing trace with hash 695502060, now seen corresponding path program 1 times [2020-08-18 23:41:19,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:41:19,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2011019404] [2020-08-18 23:41:19,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:41:19,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:19,995 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-18 23:41:19,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:41:20,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:20,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:41:20,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:20,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 23:41:20,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:20,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:41:20,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:20,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:20,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:20,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 23:41:20,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:20,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:20,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:20,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 23:41:20,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:20,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:20,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:20,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:41:20,236 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2011019404] [2020-08-18 23:41:20,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:41:20,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-18 23:41:20,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790532381] [2020-08-18 23:41:20,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-18 23:41:20,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:41:20,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-18 23:41:20,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-08-18 23:41:20,240 INFO L87 Difference]: Start difference. First operand 237 states and 342 transitions. Second operand 14 states. [2020-08-18 23:41:20,427 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-18 23:41:20,654 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-18 23:41:20,825 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-18 23:41:23,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:41:23,182 INFO L93 Difference]: Finished difference Result 455 states and 653 transitions. [2020-08-18 23:41:23,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 23:41:23,183 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 71 [2020-08-18 23:41:23,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:41:23,186 INFO L225 Difference]: With dead ends: 455 [2020-08-18 23:41:23,189 INFO L226 Difference]: Without dead ends: 237 [2020-08-18 23:41:23,193 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 [2020-08-18 23:41:23,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-08-18 23:41:23,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2020-08-18 23:41:23,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-08-18 23:41:23,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 330 transitions. [2020-08-18 23:41:23,263 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 330 transitions. Word has length 71 [2020-08-18 23:41:23,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:41:23,264 INFO L479 AbstractCegarLoop]: Abstraction has 237 states and 330 transitions. [2020-08-18 23:41:23,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-18 23:41:23,264 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 330 transitions. [2020-08-18 23:41:23,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-18 23:41:23,269 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:41:23,270 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] [2020-08-18 23:41:23,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 23:41:23,270 INFO L427 AbstractCegarLoop]: === Iteration 3 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:41:23,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:41:23,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1333871800, now seen corresponding path program 1 times [2020-08-18 23:41:23,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:41:23,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [342403484] [2020-08-18 23:41:23,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:41:23,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:23,475 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-18 23:41:23,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:41:23,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:23,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:41:23,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:23,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:41:23,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:23,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 23:41:23,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:23,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:23,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:23,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 23:41:23,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:23,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:23,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:23,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 23:41:23,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:23,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:23,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:23,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:41:23,644 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [342403484] [2020-08-18 23:41:23,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:41:23,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 23:41:23,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201309713] [2020-08-18 23:41:23,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 23:41:23,645 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:41:23,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 23:41:23,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-08-18 23:41:23,646 INFO L87 Difference]: Start difference. First operand 237 states and 330 transitions. Second operand 11 states. [2020-08-18 23:41:24,503 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-18 23:41:24,641 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-18 23:41:25,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:41:25,804 INFO L93 Difference]: Finished difference Result 454 states and 645 transitions. [2020-08-18 23:41:25,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 23:41:25,805 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 82 [2020-08-18 23:41:25,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:41:25,809 INFO L225 Difference]: With dead ends: 454 [2020-08-18 23:41:25,809 INFO L226 Difference]: Without dead ends: 241 [2020-08-18 23:41:25,810 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=115, Invalid=227, Unknown=0, NotChecked=0, Total=342 [2020-08-18 23:41:25,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-08-18 23:41:25,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2020-08-18 23:41:25,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-08-18 23:41:25,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 333 transitions. [2020-08-18 23:41:25,842 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 333 transitions. Word has length 82 [2020-08-18 23:41:25,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:41:25,843 INFO L479 AbstractCegarLoop]: Abstraction has 241 states and 333 transitions. [2020-08-18 23:41:25,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 23:41:25,843 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 333 transitions. [2020-08-18 23:41:25,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-08-18 23:41:25,845 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:41:25,846 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] [2020-08-18 23:41:25,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 23:41:25,846 INFO L427 AbstractCegarLoop]: === Iteration 4 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:41:25,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:41:25,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1250466386, now seen corresponding path program 1 times [2020-08-18 23:41:25,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:41:25,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [32982175] [2020-08-18 23:41:25,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:41:25,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:26,103 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-18 23:41:26,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:41:26,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:26,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:41:26,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:26,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:41:26,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:26,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 23:41:26,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:26,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:26,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:26,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 23:41:26,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:26,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:26,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:26,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 23:41:26,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:26,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:26,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:26,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 23:41:26,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:26,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:26,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:26,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-18 23:41:26,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:26,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 23:41:26,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:26,421 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 23:41:26,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [32982175] [2020-08-18 23:41:26,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:41:26,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-08-18 23:41:26,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195971764] [2020-08-18 23:41:26,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 23:41:26,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:41:26,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 23:41:26,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-08-18 23:41:26,424 INFO L87 Difference]: Start difference. First operand 241 states and 333 transitions. Second operand 16 states. [2020-08-18 23:41:26,593 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-18 23:41:28,451 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-18 23:41:30,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:41:30,225 INFO L93 Difference]: Finished difference Result 549 states and 758 transitions. [2020-08-18 23:41:30,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-18 23:41:30,226 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 104 [2020-08-18 23:41:30,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:41:30,231 INFO L225 Difference]: With dead ends: 549 [2020-08-18 23:41:30,232 INFO L226 Difference]: Without dead ends: 332 [2020-08-18 23:41:30,234 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=299, Invalid=891, Unknown=0, NotChecked=0, Total=1190 [2020-08-18 23:41:30,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2020-08-18 23:41:30,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 331. [2020-08-18 23:41:30,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2020-08-18 23:41:30,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 448 transitions. [2020-08-18 23:41:30,266 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 448 transitions. Word has length 104 [2020-08-18 23:41:30,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:41:30,267 INFO L479 AbstractCegarLoop]: Abstraction has 331 states and 448 transitions. [2020-08-18 23:41:30,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 23:41:30,267 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 448 transitions. [2020-08-18 23:41:30,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-08-18 23:41:30,269 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:41:30,269 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] [2020-08-18 23:41:30,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 23:41:30,270 INFO L427 AbstractCegarLoop]: === Iteration 5 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:41:30,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:41:30,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1479117531, now seen corresponding path program 1 times [2020-08-18 23:41:30,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:41:30,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1348384980] [2020-08-18 23:41:30,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:41:30,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:30,466 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-18 23:41:30,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:41:30,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:30,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:41:30,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:30,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:41:30,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:30,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 23:41:30,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:30,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:30,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:30,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 23:41:30,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:30,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:30,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:30,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 23:41:30,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:30,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:30,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:30,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 23:41:30,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:30,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:30,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:30,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:41:30,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:30,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-18 23:41:30,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:30,793 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 23:41:30,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1348384980] [2020-08-18 23:41:30,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:41:30,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-08-18 23:41:30,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214988323] [2020-08-18 23:41:30,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 23:41:30,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:41:30,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 23:41:30,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-08-18 23:41:30,797 INFO L87 Difference]: Start difference. First operand 331 states and 448 transitions. Second operand 16 states. [2020-08-18 23:41:30,967 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-18 23:41:32,734 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-18 23:41:34,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:41:34,550 INFO L93 Difference]: Finished difference Result 555 states and 766 transitions. [2020-08-18 23:41:34,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-18 23:41:34,550 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 105 [2020-08-18 23:41:34,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:41:34,554 INFO L225 Difference]: With dead ends: 555 [2020-08-18 23:41:34,554 INFO L226 Difference]: Without dead ends: 335 [2020-08-18 23:41:34,556 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=299, Invalid=891, Unknown=0, NotChecked=0, Total=1190 [2020-08-18 23:41:34,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-08-18 23:41:34,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 331. [2020-08-18 23:41:34,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2020-08-18 23:41:34,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 448 transitions. [2020-08-18 23:41:34,594 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 448 transitions. Word has length 105 [2020-08-18 23:41:34,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:41:34,594 INFO L479 AbstractCegarLoop]: Abstraction has 331 states and 448 transitions. [2020-08-18 23:41:34,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 23:41:34,595 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 448 transitions. [2020-08-18 23:41:34,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-08-18 23:41:34,596 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:41:34,596 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] [2020-08-18 23:41:34,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 23:41:34,597 INFO L427 AbstractCegarLoop]: === Iteration 6 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:41:34,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:41:34,597 INFO L82 PathProgramCache]: Analyzing trace with hash -717194829, now seen corresponding path program 1 times [2020-08-18 23:41:34,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:41:34,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [130079265] [2020-08-18 23:41:34,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:41:34,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:34,767 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-18 23:41:34,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:41:34,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:34,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:41:34,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:34,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:41:34,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:34,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 23:41:34,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:34,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:34,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:34,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 23:41:34,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:34,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:34,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:34,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 23:41:34,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:34,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:34,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:34,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 23:41:34,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:34,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:34,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:35,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 23:41:35,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:35,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 23:41:35,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:35,057 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 23:41:35,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [130079265] [2020-08-18 23:41:35,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:41:35,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 23:41:35,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833217765] [2020-08-18 23:41:35,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 23:41:35,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:41:35,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 23:41:35,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-08-18 23:41:35,060 INFO L87 Difference]: Start difference. First operand 331 states and 448 transitions. Second operand 12 states. [2020-08-18 23:41:35,869 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-18 23:41:38,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:41:38,616 INFO L93 Difference]: Finished difference Result 788 states and 1093 transitions. [2020-08-18 23:41:38,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-18 23:41:38,617 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 107 [2020-08-18 23:41:38,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:41:38,622 INFO L225 Difference]: With dead ends: 788 [2020-08-18 23:41:38,622 INFO L226 Difference]: Without dead ends: 568 [2020-08-18 23:41:38,624 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 [2020-08-18 23:41:38,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2020-08-18 23:41:38,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 551. [2020-08-18 23:41:38,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 551 states. [2020-08-18 23:41:38,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 759 transitions. [2020-08-18 23:41:38,699 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 759 transitions. Word has length 107 [2020-08-18 23:41:38,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:41:38,699 INFO L479 AbstractCegarLoop]: Abstraction has 551 states and 759 transitions. [2020-08-18 23:41:38,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 23:41:38,700 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 759 transitions. [2020-08-18 23:41:38,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-18 23:41:38,702 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:41:38,702 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] [2020-08-18 23:41:38,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 23:41:38,702 INFO L427 AbstractCegarLoop]: === Iteration 7 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:41:38,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:41:38,703 INFO L82 PathProgramCache]: Analyzing trace with hash 654438841, now seen corresponding path program 1 times [2020-08-18 23:41:38,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:41:38,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [148219392] [2020-08-18 23:41:38,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:41:38,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:38,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:41:38,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:38,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:41:38,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:38,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:41:38,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:38,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 23:41:38,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:38,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:38,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:38,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 23:41:38,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:39,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:39,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:39,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 23:41:39,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:39,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:39,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:39,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 23:41:39,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:39,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:39,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:39,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 23:41:39,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:39,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 23:41:39,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:39,135 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 23:41:39,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [148219392] [2020-08-18 23:41:39,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:41:39,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 23:41:39,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620759048] [2020-08-18 23:41:39,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 23:41:39,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:41:39,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 23:41:39,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-08-18 23:41:39,152 INFO L87 Difference]: Start difference. First operand 551 states and 759 transitions. Second operand 12 states. [2020-08-18 23:41:40,150 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-18 23:41:42,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:41:42,817 INFO L93 Difference]: Finished difference Result 1308 states and 1846 transitions. [2020-08-18 23:41:42,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-18 23:41:42,817 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 108 [2020-08-18 23:41:42,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:41:42,829 INFO L225 Difference]: With dead ends: 1308 [2020-08-18 23:41:42,829 INFO L226 Difference]: Without dead ends: 911 [2020-08-18 23:41:42,833 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 [2020-08-18 23:41:42,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2020-08-18 23:41:42,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 905. [2020-08-18 23:41:42,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 905 states. [2020-08-18 23:41:42,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1266 transitions. [2020-08-18 23:41:42,960 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1266 transitions. Word has length 108 [2020-08-18 23:41:42,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:41:42,961 INFO L479 AbstractCegarLoop]: Abstraction has 905 states and 1266 transitions. [2020-08-18 23:41:42,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 23:41:42,961 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1266 transitions. [2020-08-18 23:41:42,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-08-18 23:41:42,963 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:41:42,963 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] [2020-08-18 23:41:42,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 23:41:42,964 INFO L427 AbstractCegarLoop]: === Iteration 8 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:41:42,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:41:42,964 INFO L82 PathProgramCache]: Analyzing trace with hash 925446042, now seen corresponding path program 1 times [2020-08-18 23:41:42,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:41:42,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2095421766] [2020-08-18 23:41:42,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:41:42,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:43,137 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-18 23:41:43,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:41:43,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:43,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:41:43,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:43,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:41:43,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:43,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 23:41:43,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:43,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:43,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:43,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 23:41:43,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:43,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:43,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:43,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 23:41:43,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:43,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:43,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:43,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-18 23:41:43,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:43,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:43,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:43,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 23:41:43,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:43,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-18 23:41:43,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:43,374 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 23:41:43,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2095421766] [2020-08-18 23:41:43,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:41:43,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 23:41:43,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087389422] [2020-08-18 23:41:43,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 23:41:43,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:41:43,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 23:41:43,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-08-18 23:41:43,377 INFO L87 Difference]: Start difference. First operand 905 states and 1266 transitions. Second operand 12 states. [2020-08-18 23:41:43,593 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-18 23:41:47,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:41:47,108 INFO L93 Difference]: Finished difference Result 1649 states and 2335 transitions. [2020-08-18 23:41:47,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-18 23:41:47,109 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 109 [2020-08-18 23:41:47,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:41:47,115 INFO L225 Difference]: With dead ends: 1649 [2020-08-18 23:41:47,116 INFO L226 Difference]: Without dead ends: 916 [2020-08-18 23:41:47,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2020-08-18 23:41:47,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2020-08-18 23:41:47,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 910. [2020-08-18 23:41:47,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 910 states. [2020-08-18 23:41:47,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1268 transitions. [2020-08-18 23:41:47,230 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1268 transitions. Word has length 109 [2020-08-18 23:41:47,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:41:47,231 INFO L479 AbstractCegarLoop]: Abstraction has 910 states and 1268 transitions. [2020-08-18 23:41:47,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 23:41:47,231 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1268 transitions. [2020-08-18 23:41:47,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-18 23:41:47,233 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:41:47,233 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] [2020-08-18 23:41:47,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 23:41:47,233 INFO L427 AbstractCegarLoop]: === Iteration 9 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:41:47,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:41:47,234 INFO L82 PathProgramCache]: Analyzing trace with hash -625424837, now seen corresponding path program 1 times [2020-08-18 23:41:47,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:41:47,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2096286663] [2020-08-18 23:41:47,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:41:47,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:47,419 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-18 23:41:47,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:41:47,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:47,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:41:47,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:47,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:41:47,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:47,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 23:41:47,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:47,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:47,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:47,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 23:41:47,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:47,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:47,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:47,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 23:41:47,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:47,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:47,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:47,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 23:41:47,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:47,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:47,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:47,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 23:41:47,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:47,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 23:41:47,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:47,626 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 23:41:47,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2096286663] [2020-08-18 23:41:47,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:41:47,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-18 23:41:47,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104377821] [2020-08-18 23:41:47,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 23:41:47,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:41:47,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 23:41:47,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-18 23:41:47,628 INFO L87 Difference]: Start difference. First operand 910 states and 1268 transitions. Second operand 13 states. [2020-08-18 23:41:49,280 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-18 23:41:49,403 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-18 23:41:50,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:41:50,243 INFO L93 Difference]: Finished difference Result 1663 states and 2354 transitions. [2020-08-18 23:41:50,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 23:41:50,243 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 108 [2020-08-18 23:41:50,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:41:50,249 INFO L225 Difference]: With dead ends: 1663 [2020-08-18 23:41:50,250 INFO L226 Difference]: Without dead ends: 930 [2020-08-18 23:41:50,254 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2020-08-18 23:41:50,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2020-08-18 23:41:50,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 930. [2020-08-18 23:41:50,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 930 states. [2020-08-18 23:41:50,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 930 states to 930 states and 1284 transitions. [2020-08-18 23:41:50,352 INFO L78 Accepts]: Start accepts. Automaton has 930 states and 1284 transitions. Word has length 108 [2020-08-18 23:41:50,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:41:50,353 INFO L479 AbstractCegarLoop]: Abstraction has 930 states and 1284 transitions. [2020-08-18 23:41:50,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 23:41:50,353 INFO L276 IsEmpty]: Start isEmpty. Operand 930 states and 1284 transitions. [2020-08-18 23:41:50,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-08-18 23:41:50,355 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:41:50,356 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:41:50,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 23:41:50,356 INFO L427 AbstractCegarLoop]: === Iteration 10 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:41:50,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:41:50,356 INFO L82 PathProgramCache]: Analyzing trace with hash 442586826, now seen corresponding path program 1 times [2020-08-18 23:41:50,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:41:50,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [262475119] [2020-08-18 23:41:50,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:41:50,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:50,528 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-18 23:41:50,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:41:50,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:50,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:41:50,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:50,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:41:50,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:50,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 23:41:50,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:50,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:50,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:50,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 23:41:50,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:50,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:50,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:50,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-18 23:41:50,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:50,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:50,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:50,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-18 23:41:50,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:50,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:50,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:50,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 23:41:50,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:50,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-18 23:41:50,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:50,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 23:41:50,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:50,878 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 23:41:50,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [262475119] [2020-08-18 23:41:50,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:41:50,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 23:41:50,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540364897] [2020-08-18 23:41:50,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 23:41:50,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:41:50,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 23:41:50,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-08-18 23:41:50,880 INFO L87 Difference]: Start difference. First operand 930 states and 1284 transitions. Second operand 12 states. [2020-08-18 23:41:51,090 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-18 23:41:54,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:41:54,487 INFO L93 Difference]: Finished difference Result 1715 states and 2391 transitions. [2020-08-18 23:41:54,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-18 23:41:54,488 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 117 [2020-08-18 23:41:54,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:41:54,494 INFO L225 Difference]: With dead ends: 1715 [2020-08-18 23:41:54,494 INFO L226 Difference]: Without dead ends: 962 [2020-08-18 23:41:54,498 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2020-08-18 23:41:54,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2020-08-18 23:41:54,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 930. [2020-08-18 23:41:54,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 930 states. [2020-08-18 23:41:54,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 930 states to 930 states and 1280 transitions. [2020-08-18 23:41:54,598 INFO L78 Accepts]: Start accepts. Automaton has 930 states and 1280 transitions. Word has length 117 [2020-08-18 23:41:54,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:41:54,598 INFO L479 AbstractCegarLoop]: Abstraction has 930 states and 1280 transitions. [2020-08-18 23:41:54,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 23:41:54,598 INFO L276 IsEmpty]: Start isEmpty. Operand 930 states and 1280 transitions. [2020-08-18 23:41:54,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-08-18 23:41:54,601 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:41:54,601 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] [2020-08-18 23:41:54,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 23:41:54,601 INFO L427 AbstractCegarLoop]: === Iteration 11 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:41:54,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:41:54,602 INFO L82 PathProgramCache]: Analyzing trace with hash -208311273, now seen corresponding path program 1 times [2020-08-18 23:41:54,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:41:54,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [178267319] [2020-08-18 23:41:54,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:41:54,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:54,853 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-18 23:41:54,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:41:54,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:54,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:41:54,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:54,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:41:54,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:54,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 23:41:54,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:54,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:54,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:54,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 23:41:54,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:54,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:54,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:55,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 23:41:55,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:55,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:55,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:55,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 23:41:55,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:55,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:55,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:55,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 23:41:55,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:55,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 23:41:55,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:55,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 23:41:55,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:55,111 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 23:41:55,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [178267319] [2020-08-18 23:41:55,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:41:55,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-18 23:41:55,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843306615] [2020-08-18 23:41:55,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 23:41:55,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:41:55,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 23:41:55,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-18 23:41:55,115 INFO L87 Difference]: Start difference. First operand 930 states and 1280 transitions. Second operand 13 states. [2020-08-18 23:41:56,573 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-18 23:41:56,709 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-18 23:41:57,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:41:57,614 INFO L93 Difference]: Finished difference Result 1703 states and 2388 transitions. [2020-08-18 23:41:57,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 23:41:57,615 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 116 [2020-08-18 23:41:57,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:41:57,622 INFO L225 Difference]: With dead ends: 1703 [2020-08-18 23:41:57,623 INFO L226 Difference]: Without dead ends: 950 [2020-08-18 23:41:57,626 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2020-08-18 23:41:57,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2020-08-18 23:41:57,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 950. [2020-08-18 23:41:57,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 950 states. [2020-08-18 23:41:57,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1296 transitions. [2020-08-18 23:41:57,722 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1296 transitions. Word has length 116 [2020-08-18 23:41:57,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:41:57,723 INFO L479 AbstractCegarLoop]: Abstraction has 950 states and 1296 transitions. [2020-08-18 23:41:57,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 23:41:57,723 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1296 transitions. [2020-08-18 23:41:57,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-08-18 23:41:57,725 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:41:57,725 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] [2020-08-18 23:41:57,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 23:41:57,726 INFO L427 AbstractCegarLoop]: === Iteration 12 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:41:57,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:41:57,726 INFO L82 PathProgramCache]: Analyzing trace with hash -2072056031, now seen corresponding path program 1 times [2020-08-18 23:41:57,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:41:57,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1904046170] [2020-08-18 23:41:57,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:41:57,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:57,930 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-18 23:41:57,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:41:57,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:57,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:41:57,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:57,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:41:57,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:57,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 23:41:57,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:57,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:57,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:58,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 23:41:58,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:58,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:58,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:58,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 23:41:58,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:58,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:58,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:58,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 23:41:58,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:58,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:58,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:58,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 23:41:58,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:58,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 23:41:58,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:58,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 23:41:58,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:58,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-18 23:41:58,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:58,165 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 23:41:58,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1904046170] [2020-08-18 23:41:58,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:41:58,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-18 23:41:58,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272563911] [2020-08-18 23:41:58,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 23:41:58,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:41:58,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 23:41:58,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-18 23:41:58,169 INFO L87 Difference]: Start difference. First operand 950 states and 1296 transitions. Second operand 13 states. [2020-08-18 23:41:59,794 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-18 23:41:59,934 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-18 23:42:00,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:42:00,692 INFO L93 Difference]: Finished difference Result 1739 states and 2404 transitions. [2020-08-18 23:42:00,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 23:42:00,693 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 124 [2020-08-18 23:42:00,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:42:00,699 INFO L225 Difference]: With dead ends: 1739 [2020-08-18 23:42:00,699 INFO L226 Difference]: Without dead ends: 966 [2020-08-18 23:42:00,703 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2020-08-18 23:42:00,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2020-08-18 23:42:00,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 966. [2020-08-18 23:42:00,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 966 states. [2020-08-18 23:42:00,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1308 transitions. [2020-08-18 23:42:00,810 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1308 transitions. Word has length 124 [2020-08-18 23:42:00,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:42:00,811 INFO L479 AbstractCegarLoop]: Abstraction has 966 states and 1308 transitions. [2020-08-18 23:42:00,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 23:42:00,811 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1308 transitions. [2020-08-18 23:42:00,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-08-18 23:42:00,814 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:42:00,814 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] [2020-08-18 23:42:00,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 23:42:00,815 INFO L427 AbstractCegarLoop]: === Iteration 13 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:42:00,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:42:00,815 INFO L82 PathProgramCache]: Analyzing trace with hash 689076351, now seen corresponding path program 1 times [2020-08-18 23:42:00,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:42:00,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1646402070] [2020-08-18 23:42:00,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:42:00,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:01,052 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-18 23:42:01,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:42:01,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:01,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:42:01,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:01,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:42:01,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:01,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 23:42:01,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:01,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:42:01,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:01,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 23:42:01,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:01,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:42:01,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:01,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 23:42:01,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:01,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:42:01,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:01,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 23:42:01,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:01,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:42:01,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:01,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 23:42:01,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:01,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 23:42:01,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:01,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 23:42:01,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:01,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-18 23:42:01,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:01,378 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 23:42:01,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1646402070] [2020-08-18 23:42:01,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:42:01,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-08-18 23:42:01,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244338946] [2020-08-18 23:42:01,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-18 23:42:01,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:42:01,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-18 23:42:01,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2020-08-18 23:42:01,381 INFO L87 Difference]: Start difference. First operand 966 states and 1308 transitions. Second operand 18 states. [2020-08-18 23:42:01,777 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 133 [2020-08-18 23:42:01,940 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-08-18 23:42:02,348 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-08-18 23:42:03,839 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-18 23:42:04,014 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-18 23:42:04,158 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-18 23:42:05,750 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-08-18 23:42:05,922 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-18 23:42:08,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:42:08,327 INFO L93 Difference]: Finished difference Result 2593 states and 3617 transitions. [2020-08-18 23:42:08,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-18 23:42:08,328 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 124 [2020-08-18 23:42:08,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:42:08,349 INFO L225 Difference]: With dead ends: 2593 [2020-08-18 23:42:08,349 INFO L226 Difference]: Without dead ends: 1792 [2020-08-18 23:42:08,355 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=410, Invalid=1230, Unknown=0, NotChecked=0, Total=1640 [2020-08-18 23:42:08,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1792 states. [2020-08-18 23:42:08,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1792 to 1552. [2020-08-18 23:42:08,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1552 states. [2020-08-18 23:42:08,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1552 states to 1552 states and 2122 transitions. [2020-08-18 23:42:08,636 INFO L78 Accepts]: Start accepts. Automaton has 1552 states and 2122 transitions. Word has length 124 [2020-08-18 23:42:08,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:42:08,637 INFO L479 AbstractCegarLoop]: Abstraction has 1552 states and 2122 transitions. [2020-08-18 23:42:08,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-18 23:42:08,638 INFO L276 IsEmpty]: Start isEmpty. Operand 1552 states and 2122 transitions. [2020-08-18 23:42:08,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-08-18 23:42:08,642 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:42:08,642 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] [2020-08-18 23:42:08,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-18 23:42:08,643 INFO L427 AbstractCegarLoop]: === Iteration 14 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:42:08,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:42:08,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1938608124, now seen corresponding path program 1 times [2020-08-18 23:42:08,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:42:08,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [870453233] [2020-08-18 23:42:08,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:42:08,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:08,924 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-18 23:42:08,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:42:08,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:08,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:42:08,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:08,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:42:08,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:08,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 23:42:08,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:08,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:42:08,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:09,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 23:42:09,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:09,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:42:09,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:09,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 23:42:09,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:09,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:42:09,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:09,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 23:42:09,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:09,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:42:09,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:09,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 23:42:09,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:09,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 23:42:09,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:09,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 23:42:09,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:09,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-18 23:42:09,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:09,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-18 23:42:09,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:09,243 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-08-18 23:42:09,244 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [870453233] [2020-08-18 23:42:09,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:42:09,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-18 23:42:09,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154304164] [2020-08-18 23:42:09,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 23:42:09,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:42:09,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 23:42:09,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-18 23:42:09,247 INFO L87 Difference]: Start difference. First operand 1552 states and 2122 transitions. Second operand 13 states.