/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 00:45:32,779 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 00:45:32,782 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 00:45:32,826 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 00:45:32,827 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 00:45:32,834 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 00:45:32,836 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 00:45:32,840 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 00:45:32,842 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 00:45:32,845 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 00:45:32,847 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 00:45:32,848 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 00:45:32,848 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 00:45:32,852 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 00:45:32,854 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 00:45:32,855 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 00:45:32,857 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 00:45:32,858 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 00:45:32,860 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 00:45:32,868 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 00:45:32,871 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 00:45:32,872 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 00:45:32,873 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 00:45:32,873 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 00:45:32,886 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 00:45:32,886 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 00:45:32,887 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 00:45:32,892 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 00:45:32,892 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 00:45:32,893 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 00:45:32,893 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 00:45:32,897 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 00:45:32,898 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 00:45:32,899 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 00:45:32,900 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 00:45:32,900 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 00:45:32,900 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 00:45:32,901 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 00:45:32,905 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 00:45:32,906 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 00:45:32,907 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 00:45:32,909 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 [2020-08-22 00:45:32,951 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 00:45:32,951 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 00:45:32,952 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 00:45:32,953 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 00:45:32,953 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 00:45:32,953 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 00:45:32,953 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 00:45:32,954 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 00:45:32,955 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 00:45:32,955 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 00:45:32,956 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 00:45:32,956 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 00:45:32,956 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 00:45:32,957 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 00:45:32,957 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 00:45:32,957 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 00:45:32,958 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 00:45:32,958 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 00:45:32,958 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 00:45:32,958 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 00:45:32,959 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 00:45:32,959 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 00:45:32,959 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 00:45:32,959 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 00:45:32,960 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 00:45:32,960 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 00:45:32,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 00:45:32,960 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 00:45:32,960 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 00:45:32,961 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=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-08-22 00:45:33,292 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 00:45:33,305 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 00:45:33,309 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 00:45:33,311 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 00:45:33,311 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 00:45:33,312 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.UNBOUNDED.pals.c [2020-08-22 00:45:33,383 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/19a0334dc/768f28036d634c97873b78da43dba440/FLAGad16fb85b [2020-08-22 00:45:33,956 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 00:45:33,957 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.UNBOUNDED.pals.c [2020-08-22 00:45:33,970 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/19a0334dc/768f28036d634c97873b78da43dba440/FLAGad16fb85b [2020-08-22 00:45:34,266 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/19a0334dc/768f28036d634c97873b78da43dba440 [2020-08-22 00:45:34,278 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 00:45:34,280 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 00:45:34,283 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 00:45:34,284 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 00:45:34,288 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 00:45:34,289 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 12:45:34" (1/1) ... [2020-08-22 00:45:34,292 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@750e1b8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:45:34, skipping insertion in model container [2020-08-22 00:45:34,299 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 12:45:34" (1/1) ... [2020-08-22 00:45:34,308 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 00:45:34,366 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 00:45:34,749 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 00:45:34,758 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 00:45:34,849 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 00:45:34,871 INFO L208 MainTranslator]: Completed translation [2020-08-22 00:45:34,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:45:34 WrapperNode [2020-08-22 00:45:34,871 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 00:45:34,872 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 00:45:34,872 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 00:45:34,873 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 00:45:34,887 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:45:34" (1/1) ... [2020-08-22 00:45:34,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:45:34" (1/1) ... [2020-08-22 00:45:34,902 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:45:34" (1/1) ... [2020-08-22 00:45:34,902 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:45:34" (1/1) ... [2020-08-22 00:45:34,922 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:45:34" (1/1) ... [2020-08-22 00:45:34,936 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:45:34" (1/1) ... [2020-08-22 00:45:34,941 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:45:34" (1/1) ... [2020-08-22 00:45:34,948 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 00:45:34,948 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 00:45:34,948 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 00:45:34,949 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 00:45:34,950 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:45:34" (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 [2020-08-22 00:45:35,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 00:45:35,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 00:45:35,022 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 00:45:35,022 INFO L138 BoogieDeclarations]: Found implementation of procedure write_side1_failed_history [2020-08-22 00:45:35,023 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2020-08-22 00:45:35,023 INFO L138 BoogieDeclarations]: Found implementation of procedure write_side2_failed_history [2020-08-22 00:45:35,023 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2020-08-22 00:45:35,023 INFO L138 BoogieDeclarations]: Found implementation of procedure write_active_side_history [2020-08-22 00:45:35,023 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2020-08-22 00:45:35,023 INFO L138 BoogieDeclarations]: Found implementation of procedure write_manual_selection_history [2020-08-22 00:45:35,024 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2020-08-22 00:45:35,024 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-08-22 00:45:35,024 INFO L138 BoogieDeclarations]: Found implementation of procedure flip_the_side [2020-08-22 00:45:35,024 INFO L138 BoogieDeclarations]: Found implementation of procedure Console_task_each_pals_period [2020-08-22 00:45:35,024 INFO L138 BoogieDeclarations]: Found implementation of procedure Side1_activestandby_task_each_pals_period [2020-08-22 00:45:35,025 INFO L138 BoogieDeclarations]: Found implementation of procedure Side2_activestandby_task_each_pals_period [2020-08-22 00:45:35,025 INFO L138 BoogieDeclarations]: Found implementation of procedure Pendulum_prism_task_each_pals_period [2020-08-22 00:45:35,025 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-08-22 00:45:35,025 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 00:45:35,025 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-08-22 00:45:35,026 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 00:45:35,026 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-22 00:45:35,026 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-22 00:45:35,027 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-08-22 00:45:35,027 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-08-22 00:45:35,027 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-08-22 00:45:35,027 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 00:45:35,027 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 00:45:35,027 INFO L130 BoogieDeclarations]: Found specification of procedure write_side1_failed_history [2020-08-22 00:45:35,028 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2020-08-22 00:45:35,028 INFO L130 BoogieDeclarations]: Found specification of procedure write_side2_failed_history [2020-08-22 00:45:35,028 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2020-08-22 00:45:35,028 INFO L130 BoogieDeclarations]: Found specification of procedure write_active_side_history [2020-08-22 00:45:35,028 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2020-08-22 00:45:35,028 INFO L130 BoogieDeclarations]: Found specification of procedure write_manual_selection_history [2020-08-22 00:45:35,029 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2020-08-22 00:45:35,029 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-08-22 00:45:35,029 INFO L130 BoogieDeclarations]: Found specification of procedure flip_the_side [2020-08-22 00:45:35,029 INFO L130 BoogieDeclarations]: Found specification of procedure Console_task_each_pals_period [2020-08-22 00:45:35,029 INFO L130 BoogieDeclarations]: Found specification of procedure Side1_activestandby_task_each_pals_period [2020-08-22 00:45:35,029 INFO L130 BoogieDeclarations]: Found specification of procedure Side2_activestandby_task_each_pals_period [2020-08-22 00:45:35,030 INFO L130 BoogieDeclarations]: Found specification of procedure Pendulum_prism_task_each_pals_period [2020-08-22 00:45:35,030 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-08-22 00:45:35,030 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 00:45:35,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 00:45:35,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 00:45:35,843 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 00:45:35,843 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-22 00:45:35,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 12:45:35 BoogieIcfgContainer [2020-08-22 00:45:35,850 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 00:45:35,851 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 00:45:35,852 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 00:45:35,855 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 00:45:35,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 12:45:34" (1/3) ... [2020-08-22 00:45:35,856 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41538ab1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 12:45:35, skipping insertion in model container [2020-08-22 00:45:35,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:45:34" (2/3) ... [2020-08-22 00:45:35,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41538ab1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 12:45:35, skipping insertion in model container [2020-08-22 00:45:35,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 12:45:35" (3/3) ... [2020-08-22 00:45:35,859 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.1.ufo.UNBOUNDED.pals.c [2020-08-22 00:45:35,871 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 00:45:35,879 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 00:45:35,897 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 00:45:35,925 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 00:45:35,925 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 00:45:35,925 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 00:45:35,925 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 00:45:35,925 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 00:45:35,929 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 00:45:35,929 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 00:45:35,929 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 00:45:35,966 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states. [2020-08-22 00:45:35,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-08-22 00:45:35,985 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:45:35,986 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] [2020-08-22 00:45:35,987 INFO L427 AbstractCegarLoop]: === Iteration 1 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:45:35,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:45:35,995 INFO L82 PathProgramCache]: Analyzing trace with hash -1549655252, now seen corresponding path program 1 times [2020-08-22 00:45:36,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:45:36,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [466656177] [2020-08-22 00:45:36,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:45:36,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:36,565 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-22 00:45:36,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:45:36,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:36,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:45:36,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:36,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 00:45:36,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:36,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:45:36,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:36,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:45:36,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:36,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 00:45:36,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:36,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:45:36,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:36,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 00:45:36,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:36,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:45:36,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:36,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:45:36,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [466656177] [2020-08-22 00:45:36,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:45:36,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 00:45:36,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083206486] [2020-08-22 00:45:36,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 00:45:36,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:45:36,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 00:45:36,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-08-22 00:45:36,850 INFO L87 Difference]: Start difference. First operand 242 states. Second operand 9 states. [2020-08-22 00:45:38,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:45:38,407 INFO L93 Difference]: Finished difference Result 456 states and 705 transitions. [2020-08-22 00:45:38,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 00:45:38,412 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 71 [2020-08-22 00:45:38,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:45:38,449 INFO L225 Difference]: With dead ends: 456 [2020-08-22 00:45:38,449 INFO L226 Difference]: Without dead ends: 237 [2020-08-22 00:45:38,457 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 [2020-08-22 00:45:38,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-08-22 00:45:38,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2020-08-22 00:45:38,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-08-22 00:45:38,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 342 transitions. [2020-08-22 00:45:38,550 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 342 transitions. Word has length 71 [2020-08-22 00:45:38,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:45:38,551 INFO L479 AbstractCegarLoop]: Abstraction has 237 states and 342 transitions. [2020-08-22 00:45:38,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 00:45:38,551 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 342 transitions. [2020-08-22 00:45:38,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-08-22 00:45:38,556 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:45:38,556 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] [2020-08-22 00:45:38,556 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 00:45:38,557 INFO L427 AbstractCegarLoop]: === Iteration 2 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:45:38,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:45:38,557 INFO L82 PathProgramCache]: Analyzing trace with hash 695502060, now seen corresponding path program 1 times [2020-08-22 00:45:38,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:45:38,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [461168133] [2020-08-22 00:45:38,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:45:38,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:38,786 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-22 00:45:38,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:45:38,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:38,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:45:38,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:38,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 00:45:38,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:38,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:45:38,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:38,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:45:38,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:38,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 00:45:38,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:38,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:45:38,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:38,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 00:45:38,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:39,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:45:39,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:39,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:45:39,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [461168133] [2020-08-22 00:45:39,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:45:39,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-22 00:45:39,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172793003] [2020-08-22 00:45:39,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 00:45:39,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:45:39,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 00:45:39,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-08-22 00:45:39,055 INFO L87 Difference]: Start difference. First operand 237 states and 342 transitions. Second operand 14 states. [2020-08-22 00:45:39,250 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-22 00:45:39,630 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-22 00:45:42,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:45:42,087 INFO L93 Difference]: Finished difference Result 455 states and 653 transitions. [2020-08-22 00:45:42,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 00:45:42,095 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 71 [2020-08-22 00:45:42,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:45:42,100 INFO L225 Difference]: With dead ends: 455 [2020-08-22 00:45:42,100 INFO L226 Difference]: Without dead ends: 237 [2020-08-22 00:45:42,110 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-08-22 00:45:42,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-08-22 00:45:42,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2020-08-22 00:45:42,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-08-22 00:45:42,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 330 transitions. [2020-08-22 00:45:42,175 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 330 transitions. Word has length 71 [2020-08-22 00:45:42,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:45:42,175 INFO L479 AbstractCegarLoop]: Abstraction has 237 states and 330 transitions. [2020-08-22 00:45:42,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 00:45:42,176 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 330 transitions. [2020-08-22 00:45:42,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-22 00:45:42,182 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:45:42,183 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] [2020-08-22 00:45:42,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 00:45:42,183 INFO L427 AbstractCegarLoop]: === Iteration 3 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:45:42,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:45:42,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1333871800, now seen corresponding path program 1 times [2020-08-22 00:45:42,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:45:42,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1905499402] [2020-08-22 00:45:42,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:45:42,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:42,429 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-22 00:45:42,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:45:42,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:42,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:45:42,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:42,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 00:45:42,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:42,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 00:45:42,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:42,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:45:42,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:42,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 00:45:42,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:42,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:45:42,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:42,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-22 00:45:42,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:42,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:45:42,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:42,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:45:42,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1905499402] [2020-08-22 00:45:42,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:45:42,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 00:45:42,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797773894] [2020-08-22 00:45:42,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 00:45:42,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:45:42,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 00:45:42,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-08-22 00:45:42,606 INFO L87 Difference]: Start difference. First operand 237 states and 330 transitions. Second operand 11 states. [2020-08-22 00:45:43,497 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-22 00:45:43,624 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-22 00:45:44,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:45:44,683 INFO L93 Difference]: Finished difference Result 454 states and 645 transitions. [2020-08-22 00:45:44,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 00:45:44,684 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 82 [2020-08-22 00:45:44,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:45:44,688 INFO L225 Difference]: With dead ends: 454 [2020-08-22 00:45:44,689 INFO L226 Difference]: Without dead ends: 241 [2020-08-22 00:45:44,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=115, Invalid=227, Unknown=0, NotChecked=0, Total=342 [2020-08-22 00:45:44,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-08-22 00:45:44,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2020-08-22 00:45:44,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-08-22 00:45:44,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 333 transitions. [2020-08-22 00:45:44,722 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 333 transitions. Word has length 82 [2020-08-22 00:45:44,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:45:44,723 INFO L479 AbstractCegarLoop]: Abstraction has 241 states and 333 transitions. [2020-08-22 00:45:44,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 00:45:44,723 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 333 transitions. [2020-08-22 00:45:44,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-08-22 00:45:44,726 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:45:44,726 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] [2020-08-22 00:45:44,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 00:45:44,726 INFO L427 AbstractCegarLoop]: === Iteration 4 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:45:44,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:45:44,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1250466386, now seen corresponding path program 1 times [2020-08-22 00:45:44,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:45:44,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [72509385] [2020-08-22 00:45:44,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:45:44,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:44,951 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-22 00:45:44,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:45:44,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:44,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:45:44,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:44,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 00:45:44,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:44,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 00:45:44,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:45,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:45:45,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:45,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 00:45:45,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:45,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:45:45,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:45,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-22 00:45:45,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:45,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:45:45,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:45,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-22 00:45:45,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:45,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:45:45,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:45,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 00:45:45,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:45,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 00:45:45,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:45,327 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-22 00:45:45,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [72509385] [2020-08-22 00:45:45,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:45:45,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-08-22 00:45:45,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989712672] [2020-08-22 00:45:45,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-22 00:45:45,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:45:45,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-22 00:45:45,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-08-22 00:45:45,330 INFO L87 Difference]: Start difference. First operand 241 states and 333 transitions. Second operand 16 states. [2020-08-22 00:45:45,499 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-22 00:45:47,372 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-22 00:45:49,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:45:49,266 INFO L93 Difference]: Finished difference Result 549 states and 758 transitions. [2020-08-22 00:45:49,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-22 00:45:49,267 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 104 [2020-08-22 00:45:49,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:45:49,272 INFO L225 Difference]: With dead ends: 549 [2020-08-22 00:45:49,273 INFO L226 Difference]: Without dead ends: 332 [2020-08-22 00:45:49,274 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 [2020-08-22 00:45:49,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2020-08-22 00:45:49,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 331. [2020-08-22 00:45:49,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2020-08-22 00:45:49,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 448 transitions. [2020-08-22 00:45:49,317 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 448 transitions. Word has length 104 [2020-08-22 00:45:49,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:45:49,318 INFO L479 AbstractCegarLoop]: Abstraction has 331 states and 448 transitions. [2020-08-22 00:45:49,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-22 00:45:49,318 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 448 transitions. [2020-08-22 00:45:49,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-08-22 00:45:49,320 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:45:49,320 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] [2020-08-22 00:45:49,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 00:45:49,321 INFO L427 AbstractCegarLoop]: === Iteration 5 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:45:49,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:45:49,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1479117531, now seen corresponding path program 1 times [2020-08-22 00:45:49,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:45:49,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1456820088] [2020-08-22 00:45:49,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:45:49,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:49,524 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-22 00:45:49,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:45:49,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:49,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:45:49,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:49,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 00:45:49,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:49,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 00:45:49,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:49,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:45:49,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:49,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 00:45:49,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:49,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:45:49,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:49,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-22 00:45:49,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:49,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:45:49,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:49,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-22 00:45:49,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:49,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:45:49,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:49,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:45:49,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:49,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-22 00:45:49,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:49,819 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-22 00:45:49,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1456820088] [2020-08-22 00:45:49,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:45:49,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-08-22 00:45:49,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861737365] [2020-08-22 00:45:49,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-22 00:45:49,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:45:49,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-22 00:45:49,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-08-22 00:45:49,823 INFO L87 Difference]: Start difference. First operand 331 states and 448 transitions. Second operand 16 states. [2020-08-22 00:45:50,038 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-22 00:45:51,700 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-22 00:45:53,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:45:53,551 INFO L93 Difference]: Finished difference Result 555 states and 766 transitions. [2020-08-22 00:45:53,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-22 00:45:53,551 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 105 [2020-08-22 00:45:53,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:45:53,555 INFO L225 Difference]: With dead ends: 555 [2020-08-22 00:45:53,556 INFO L226 Difference]: Without dead ends: 335 [2020-08-22 00:45:53,558 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=299, Invalid=891, Unknown=0, NotChecked=0, Total=1190 [2020-08-22 00:45:53,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-08-22 00:45:53,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 331. [2020-08-22 00:45:53,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2020-08-22 00:45:53,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 448 transitions. [2020-08-22 00:45:53,618 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 448 transitions. Word has length 105 [2020-08-22 00:45:53,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:45:53,619 INFO L479 AbstractCegarLoop]: Abstraction has 331 states and 448 transitions. [2020-08-22 00:45:53,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-22 00:45:53,619 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 448 transitions. [2020-08-22 00:45:53,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-08-22 00:45:53,620 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:45:53,621 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] [2020-08-22 00:45:53,621 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 00:45:53,621 INFO L427 AbstractCegarLoop]: === Iteration 6 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:45:53,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:45:53,622 INFO L82 PathProgramCache]: Analyzing trace with hash -717194829, now seen corresponding path program 1 times [2020-08-22 00:45:53,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:45:53,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [990298220] [2020-08-22 00:45:53,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:45:53,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:53,822 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-22 00:45:53,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:45:53,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:53,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:45:53,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:53,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 00:45:53,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:53,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 00:45:53,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:53,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:45:53,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:53,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 00:45:53,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:53,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:45:53,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:54,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-22 00:45:54,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:54,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:45:54,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:54,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-22 00:45:54,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:54,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:45:54,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:54,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 00:45:54,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:54,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 00:45:54,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:54,129 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-22 00:45:54,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [990298220] [2020-08-22 00:45:54,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:45:54,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 00:45:54,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118168106] [2020-08-22 00:45:54,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 00:45:54,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:45:54,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 00:45:54,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-08-22 00:45:54,134 INFO L87 Difference]: Start difference. First operand 331 states and 448 transitions. Second operand 12 states. [2020-08-22 00:45:54,905 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-22 00:45:57,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:45:57,673 INFO L93 Difference]: Finished difference Result 788 states and 1093 transitions. [2020-08-22 00:45:57,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-22 00:45:57,674 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 107 [2020-08-22 00:45:57,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:45:57,679 INFO L225 Difference]: With dead ends: 788 [2020-08-22 00:45:57,679 INFO L226 Difference]: Without dead ends: 568 [2020-08-22 00:45:57,681 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 [2020-08-22 00:45:57,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2020-08-22 00:45:57,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 551. [2020-08-22 00:45:57,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 551 states. [2020-08-22 00:45:57,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 759 transitions. [2020-08-22 00:45:57,747 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 759 transitions. Word has length 107 [2020-08-22 00:45:57,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:45:57,748 INFO L479 AbstractCegarLoop]: Abstraction has 551 states and 759 transitions. [2020-08-22 00:45:57,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 00:45:57,748 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 759 transitions. [2020-08-22 00:45:57,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-22 00:45:57,750 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:45:57,750 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] [2020-08-22 00:45:57,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 00:45:57,751 INFO L427 AbstractCegarLoop]: === Iteration 7 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:45:57,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:45:57,751 INFO L82 PathProgramCache]: Analyzing trace with hash 654438841, now seen corresponding path program 1 times [2020-08-22 00:45:57,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:45:57,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1286380187] [2020-08-22 00:45:57,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:45:57,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:57,920 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-22 00:45:57,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:45:57,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:57,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:45:57,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:57,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 00:45:57,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:57,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 00:45:57,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:57,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:45:57,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:58,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 00:45:58,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:58,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:45:58,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:58,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-22 00:45:58,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:58,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:45:58,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:58,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-22 00:45:58,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:58,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:45:58,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:58,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 00:45:58,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:58,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-22 00:45:58,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:58,141 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-22 00:45:58,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1286380187] [2020-08-22 00:45:58,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:45:58,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 00:45:58,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200830039] [2020-08-22 00:45:58,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 00:45:58,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:45:58,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 00:45:58,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-08-22 00:45:58,144 INFO L87 Difference]: Start difference. First operand 551 states and 759 transitions. Second operand 12 states. [2020-08-22 00:45:59,218 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-22 00:46:01,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:46:01,795 INFO L93 Difference]: Finished difference Result 1308 states and 1846 transitions. [2020-08-22 00:46:01,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-22 00:46:01,796 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 108 [2020-08-22 00:46:01,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:46:01,807 INFO L225 Difference]: With dead ends: 1308 [2020-08-22 00:46:01,807 INFO L226 Difference]: Without dead ends: 911 [2020-08-22 00:46:01,812 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 [2020-08-22 00:46:01,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2020-08-22 00:46:01,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 905. [2020-08-22 00:46:01,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 905 states. [2020-08-22 00:46:01,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1266 transitions. [2020-08-22 00:46:01,944 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1266 transitions. Word has length 108 [2020-08-22 00:46:01,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:46:01,945 INFO L479 AbstractCegarLoop]: Abstraction has 905 states and 1266 transitions. [2020-08-22 00:46:01,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 00:46:01,945 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1266 transitions. [2020-08-22 00:46:01,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-08-22 00:46:01,947 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:46:01,947 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] [2020-08-22 00:46:01,947 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 00:46:01,948 INFO L427 AbstractCegarLoop]: === Iteration 8 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:46:01,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:46:01,948 INFO L82 PathProgramCache]: Analyzing trace with hash 925446042, now seen corresponding path program 1 times [2020-08-22 00:46:01,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:46:01,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1621248235] [2020-08-22 00:46:01,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:46:01,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:02,129 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-22 00:46:02,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:46:02,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:02,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:46:02,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:02,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 00:46:02,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:02,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 00:46:02,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:02,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:46:02,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:02,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 00:46:02,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:02,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:46:02,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:02,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-22 00:46:02,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:02,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:46:02,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:02,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-22 00:46:02,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:02,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:46:02,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:02,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 00:46:02,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:02,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-22 00:46:02,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:02,413 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-22 00:46:02,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1621248235] [2020-08-22 00:46:02,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:46:02,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 00:46:02,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189772303] [2020-08-22 00:46:02,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 00:46:02,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:46:02,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 00:46:02,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-08-22 00:46:02,418 INFO L87 Difference]: Start difference. First operand 905 states and 1266 transitions. Second operand 12 states. [2020-08-22 00:46:02,604 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-22 00:46:05,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:46:05,859 INFO L93 Difference]: Finished difference Result 1649 states and 2335 transitions. [2020-08-22 00:46:05,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-22 00:46:05,860 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 109 [2020-08-22 00:46:05,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:46:05,867 INFO L225 Difference]: With dead ends: 1649 [2020-08-22 00:46:05,867 INFO L226 Difference]: Without dead ends: 916 [2020-08-22 00:46:05,871 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2020-08-22 00:46:05,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2020-08-22 00:46:05,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 910. [2020-08-22 00:46:05,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 910 states. [2020-08-22 00:46:05,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1268 transitions. [2020-08-22 00:46:05,979 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1268 transitions. Word has length 109 [2020-08-22 00:46:05,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:46:05,979 INFO L479 AbstractCegarLoop]: Abstraction has 910 states and 1268 transitions. [2020-08-22 00:46:05,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 00:46:05,980 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1268 transitions. [2020-08-22 00:46:05,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-22 00:46:05,982 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:46:05,982 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] [2020-08-22 00:46:05,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 00:46:05,982 INFO L427 AbstractCegarLoop]: === Iteration 9 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:46:05,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:46:05,983 INFO L82 PathProgramCache]: Analyzing trace with hash -625424837, now seen corresponding path program 1 times [2020-08-22 00:46:05,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:46:05,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1782839929] [2020-08-22 00:46:05,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:46:06,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:06,173 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-22 00:46:06,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:46:06,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:06,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:46:06,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:06,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 00:46:06,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:06,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 00:46:06,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:06,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:46:06,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:06,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 00:46:06,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:06,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:46:06,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:06,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-22 00:46:06,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:06,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:46:06,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:06,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-22 00:46:06,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:06,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:46:06,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:06,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 00:46:06,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:06,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-22 00:46:06,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:06,382 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-22 00:46:06,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1782839929] [2020-08-22 00:46:06,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:46:06,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-22 00:46:06,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781083136] [2020-08-22 00:46:06,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 00:46:06,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:46:06,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 00:46:06,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-22 00:46:06,385 INFO L87 Difference]: Start difference. First operand 910 states and 1268 transitions. Second operand 13 states. [2020-08-22 00:46:07,723 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-22 00:46:07,845 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-22 00:46:08,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:46:08,683 INFO L93 Difference]: Finished difference Result 1663 states and 2354 transitions. [2020-08-22 00:46:08,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 00:46:08,689 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 108 [2020-08-22 00:46:08,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:46:08,695 INFO L225 Difference]: With dead ends: 1663 [2020-08-22 00:46:08,696 INFO L226 Difference]: Without dead ends: 930 [2020-08-22 00:46:08,700 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2020-08-22 00:46:08,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2020-08-22 00:46:08,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 930. [2020-08-22 00:46:08,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 930 states. [2020-08-22 00:46:08,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 930 states to 930 states and 1284 transitions. [2020-08-22 00:46:08,800 INFO L78 Accepts]: Start accepts. Automaton has 930 states and 1284 transitions. Word has length 108 [2020-08-22 00:46:08,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:46:08,801 INFO L479 AbstractCegarLoop]: Abstraction has 930 states and 1284 transitions. [2020-08-22 00:46:08,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 00:46:08,801 INFO L276 IsEmpty]: Start isEmpty. Operand 930 states and 1284 transitions. [2020-08-22 00:46:08,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-08-22 00:46:08,805 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:46:08,806 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] [2020-08-22 00:46:08,806 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 00:46:08,806 INFO L427 AbstractCegarLoop]: === Iteration 10 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:46:08,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:46:08,806 INFO L82 PathProgramCache]: Analyzing trace with hash 442586826, now seen corresponding path program 1 times [2020-08-22 00:46:08,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:46:08,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [266301209] [2020-08-22 00:46:08,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:46:08,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:09,095 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-22 00:46:09,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:46:09,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:09,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:46:09,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:09,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 00:46:09,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:09,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 00:46:09,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:09,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:46:09,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:09,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 00:46:09,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:09,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:46:09,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:09,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-22 00:46:09,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:09,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:46:09,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:09,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-22 00:46:09,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:09,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:46:09,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:09,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 00:46:09,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:09,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-22 00:46:09,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:09,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 00:46:09,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:09,343 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-22 00:46:09,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [266301209] [2020-08-22 00:46:09,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:46:09,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 00:46:09,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055446247] [2020-08-22 00:46:09,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 00:46:09,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:46:09,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 00:46:09,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-08-22 00:46:09,346 INFO L87 Difference]: Start difference. First operand 930 states and 1284 transitions. Second operand 12 states. [2020-08-22 00:46:09,526 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-22 00:46:12,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:46:12,810 INFO L93 Difference]: Finished difference Result 1715 states and 2391 transitions. [2020-08-22 00:46:12,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-22 00:46:12,811 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 117 [2020-08-22 00:46:12,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:46:12,817 INFO L225 Difference]: With dead ends: 1715 [2020-08-22 00:46:12,817 INFO L226 Difference]: Without dead ends: 962 [2020-08-22 00:46:12,821 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 [2020-08-22 00:46:12,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2020-08-22 00:46:12,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 930. [2020-08-22 00:46:12,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 930 states. [2020-08-22 00:46:12,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 930 states to 930 states and 1280 transitions. [2020-08-22 00:46:12,927 INFO L78 Accepts]: Start accepts. Automaton has 930 states and 1280 transitions. Word has length 117 [2020-08-22 00:46:12,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:46:12,928 INFO L479 AbstractCegarLoop]: Abstraction has 930 states and 1280 transitions. [2020-08-22 00:46:12,928 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 00:46:12,929 INFO L276 IsEmpty]: Start isEmpty. Operand 930 states and 1280 transitions. [2020-08-22 00:46:12,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-08-22 00:46:12,931 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:46:12,932 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] [2020-08-22 00:46:12,932 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 00:46:12,932 INFO L427 AbstractCegarLoop]: === Iteration 11 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:46:12,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:46:12,933 INFO L82 PathProgramCache]: Analyzing trace with hash -208311273, now seen corresponding path program 1 times [2020-08-22 00:46:12,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:46:12,934 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [304123723] [2020-08-22 00:46:12,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:46:12,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:13,157 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-22 00:46:13,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:46:13,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:13,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:46:13,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:13,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 00:46:13,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:13,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 00:46:13,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:13,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:46:13,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:13,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 00:46:13,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:13,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:46:13,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:13,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-22 00:46:13,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:13,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:46:13,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:13,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-22 00:46:13,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:13,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:46:13,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:13,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 00:46:13,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:13,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-22 00:46:13,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:13,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 00:46:13,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:13,400 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-22 00:46:13,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [304123723] [2020-08-22 00:46:13,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:46:13,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-22 00:46:13,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691189967] [2020-08-22 00:46:13,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 00:46:13,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:46:13,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 00:46:13,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-22 00:46:13,403 INFO L87 Difference]: Start difference. First operand 930 states and 1280 transitions. Second operand 13 states. [2020-08-22 00:46:14,750 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-22 00:46:14,888 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-22 00:46:15,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:46:15,770 INFO L93 Difference]: Finished difference Result 1703 states and 2388 transitions. [2020-08-22 00:46:15,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 00:46:15,770 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 116 [2020-08-22 00:46:15,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:46:15,777 INFO L225 Difference]: With dead ends: 1703 [2020-08-22 00:46:15,777 INFO L226 Difference]: Without dead ends: 950 [2020-08-22 00:46:15,781 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2020-08-22 00:46:15,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2020-08-22 00:46:15,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 950. [2020-08-22 00:46:15,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 950 states. [2020-08-22 00:46:15,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1296 transitions. [2020-08-22 00:46:15,877 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1296 transitions. Word has length 116 [2020-08-22 00:46:15,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:46:15,878 INFO L479 AbstractCegarLoop]: Abstraction has 950 states and 1296 transitions. [2020-08-22 00:46:15,878 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 00:46:15,878 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1296 transitions. [2020-08-22 00:46:15,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-08-22 00:46:15,880 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:46:15,880 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] [2020-08-22 00:46:15,880 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 00:46:15,881 INFO L427 AbstractCegarLoop]: === Iteration 12 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:46:15,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:46:15,881 INFO L82 PathProgramCache]: Analyzing trace with hash -2072056031, now seen corresponding path program 1 times [2020-08-22 00:46:15,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:46:15,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1429304478] [2020-08-22 00:46:15,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:46:15,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:16,052 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-22 00:46:16,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:46:16,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:16,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:46:16,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:16,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 00:46:16,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:16,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 00:46:16,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:16,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:46:16,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:16,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 00:46:16,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:16,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:46:16,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:16,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-22 00:46:16,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:16,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:46:16,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:16,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-22 00:46:16,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:16,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:46:16,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:16,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 00:46:16,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:16,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-22 00:46:16,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:16,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 00:46:16,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:16,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-22 00:46:16,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:16,289 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-22 00:46:16,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1429304478] [2020-08-22 00:46:16,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:46:16,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-22 00:46:16,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925944295] [2020-08-22 00:46:16,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 00:46:16,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:46:16,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 00:46:16,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-22 00:46:16,293 INFO L87 Difference]: Start difference. First operand 950 states and 1296 transitions. Second operand 13 states. [2020-08-22 00:46:17,687 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-22 00:46:17,813 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-22 00:46:18,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:46:18,488 INFO L93 Difference]: Finished difference Result 1739 states and 2404 transitions. [2020-08-22 00:46:18,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 00:46:18,488 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 124 [2020-08-22 00:46:18,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:46:18,495 INFO L225 Difference]: With dead ends: 1739 [2020-08-22 00:46:18,495 INFO L226 Difference]: Without dead ends: 966 [2020-08-22 00:46:18,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2020-08-22 00:46:18,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2020-08-22 00:46:18,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 966. [2020-08-22 00:46:18,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 966 states. [2020-08-22 00:46:18,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1308 transitions. [2020-08-22 00:46:18,602 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1308 transitions. Word has length 124 [2020-08-22 00:46:18,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:46:18,603 INFO L479 AbstractCegarLoop]: Abstraction has 966 states and 1308 transitions. [2020-08-22 00:46:18,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 00:46:18,603 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1308 transitions. [2020-08-22 00:46:18,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-08-22 00:46:18,605 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:46:18,605 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] [2020-08-22 00:46:18,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 00:46:18,606 INFO L427 AbstractCegarLoop]: === Iteration 13 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:46:18,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:46:18,606 INFO L82 PathProgramCache]: Analyzing trace with hash 689076351, now seen corresponding path program 1 times [2020-08-22 00:46:18,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:46:18,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [56624603] [2020-08-22 00:46:18,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:46:18,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:18,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:46:18,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:18,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:46:18,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:18,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 00:46:18,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:18,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 00:46:18,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:18,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:46:18,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:18,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 00:46:18,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:18,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:46:18,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:18,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-22 00:46:18,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:18,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:46:18,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:19,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-22 00:46:19,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:19,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:46:19,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:19,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 00:46:19,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:19,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-22 00:46:19,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:19,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 00:46:19,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:19,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-22 00:46:19,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:19,122 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-22 00:46:19,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [56624603] [2020-08-22 00:46:19,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:46:19,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-08-22 00:46:19,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722497082] [2020-08-22 00:46:19,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-22 00:46:19,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:46:19,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-22 00:46:19,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2020-08-22 00:46:19,126 INFO L87 Difference]: Start difference. First operand 966 states and 1308 transitions. Second operand 18 states. [2020-08-22 00:46:19,466 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 133 [2020-08-22 00:46:19,663 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-08-22 00:46:20,072 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-08-22 00:46:21,448 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-22 00:46:21,592 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-22 00:46:21,728 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-22 00:46:23,222 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-08-22 00:46:23,370 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-22 00:46:25,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:46:25,810 INFO L93 Difference]: Finished difference Result 2593 states and 3617 transitions. [2020-08-22 00:46:25,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-22 00:46:25,811 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 124 [2020-08-22 00:46:25,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:46:25,828 INFO L225 Difference]: With dead ends: 2593 [2020-08-22 00:46:25,828 INFO L226 Difference]: Without dead ends: 1792 [2020-08-22 00:46:25,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=410, Invalid=1230, Unknown=0, NotChecked=0, Total=1640 [2020-08-22 00:46:25,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1792 states. [2020-08-22 00:46:26,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1792 to 1552. [2020-08-22 00:46:26,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1552 states. [2020-08-22 00:46:26,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1552 states to 1552 states and 2122 transitions. [2020-08-22 00:46:26,121 INFO L78 Accepts]: Start accepts. Automaton has 1552 states and 2122 transitions. Word has length 124 [2020-08-22 00:46:26,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:46:26,124 INFO L479 AbstractCegarLoop]: Abstraction has 1552 states and 2122 transitions. [2020-08-22 00:46:26,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-22 00:46:26,125 INFO L276 IsEmpty]: Start isEmpty. Operand 1552 states and 2122 transitions. [2020-08-22 00:46:26,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-08-22 00:46:26,129 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:46:26,129 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] [2020-08-22 00:46:26,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-22 00:46:26,130 INFO L427 AbstractCegarLoop]: === Iteration 14 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:46:26,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:46:26,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1938608124, now seen corresponding path program 1 times [2020-08-22 00:46:26,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:46:26,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [568364277] [2020-08-22 00:46:26,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:46:26,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:26,437 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-22 00:46:26,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:46:26,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:26,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:46:26,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:26,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 00:46:26,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:26,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 00:46:26,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:26,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:46:26,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:26,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 00:46:26,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:26,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:46:26,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:26,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-22 00:46:26,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:26,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:46:26,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:26,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-22 00:46:26,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:26,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:46:26,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:26,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 00:46:26,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:26,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-22 00:46:26,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:26,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 00:46:26,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:26,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-22 00:46:26,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:26,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 00:46:26,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:26,779 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-08-22 00:46:26,780 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [568364277] [2020-08-22 00:46:26,780 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:46:26,781 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-22 00:46:26,781 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954054302] [2020-08-22 00:46:26,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 00:46:26,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:46:26,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 00:46:26,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-22 00:46:26,783 INFO L87 Difference]: Start difference. First operand 1552 states and 2122 transitions. Second operand 13 states. [2020-08-22 00:46:27,732 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 73