/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.BOUNDED-10.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 06:09:38,997 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 06:09:39,000 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 06:09:39,027 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 06:09:39,027 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 06:09:39,028 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 06:09:39,030 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 06:09:39,031 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 06:09:39,033 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 06:09:39,034 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 06:09:39,035 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 06:09:39,036 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 06:09:39,036 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 06:09:39,037 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 06:09:39,038 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 06:09:39,039 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 06:09:39,040 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 06:09:39,041 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 06:09:39,043 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 06:09:39,045 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 06:09:39,046 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 06:09:39,047 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 06:09:39,048 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 06:09:39,049 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 06:09:39,052 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 06:09:39,052 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 06:09:39,052 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 06:09:39,053 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 06:09:39,054 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 06:09:39,054 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 06:09:39,055 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 06:09:39,055 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 06:09:39,056 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 06:09:39,057 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 06:09:39,058 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 06:09:39,058 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 06:09:39,059 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 06:09:39,059 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 06:09:39,059 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 06:09:39,060 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 06:09:39,061 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 06:09:39,062 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 06:09:39,085 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 06:09:39,085 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 06:09:39,086 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 06:09:39,087 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 06:09:39,087 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 06:09:39,087 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 06:09:39,087 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 06:09:39,087 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 06:09:39,088 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 06:09:39,088 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 06:09:39,088 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 06:09:39,088 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 06:09:39,088 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 06:09:39,089 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 06:09:39,089 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 06:09:39,089 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 06:09:39,089 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 06:09:39,089 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 06:09:39,090 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 06:09:39,090 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 06:09:39,090 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 06:09:39,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 06:09:39,090 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 06:09:39,091 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 06:09:39,091 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 06:09:39,091 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 06:09:39,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 06:09:39,091 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 06:09:39,092 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 06:09:39,092 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; [2020-08-19 06:09:39,403 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 06:09:39,423 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 06:09:39,430 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 06:09:39,432 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 06:09:39,434 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 06:09:39,434 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.BOUNDED-10.pals.c [2020-08-19 06:09:39,512 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eff10ef1f/e828f76703bf406cb22bad5341657616/FLAGbafc02bb9 [2020-08-19 06:09:40,087 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 06:09:40,089 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.BOUNDED-10.pals.c [2020-08-19 06:09:40,101 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eff10ef1f/e828f76703bf406cb22bad5341657616/FLAGbafc02bb9 [2020-08-19 06:09:40,361 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eff10ef1f/e828f76703bf406cb22bad5341657616 [2020-08-19 06:09:40,369 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 06:09:40,371 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 06:09:40,372 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 06:09:40,372 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 06:09:40,376 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 06:09:40,377 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:09:40" (1/1) ... [2020-08-19 06:09:40,380 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67bb90ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:09:40, skipping insertion in model container [2020-08-19 06:09:40,380 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:09:40" (1/1) ... [2020-08-19 06:09:40,390 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 06:09:40,450 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 06:09:40,794 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:09:40,804 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 06:09:40,890 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:09:40,912 INFO L208 MainTranslator]: Completed translation [2020-08-19 06:09:40,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:09:40 WrapperNode [2020-08-19 06:09:40,912 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 06:09:40,913 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 06:09:40,913 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 06:09:40,913 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 06:09:40,923 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:09:40" (1/1) ... [2020-08-19 06:09:40,924 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:09:40" (1/1) ... [2020-08-19 06:09:40,938 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:09:40" (1/1) ... [2020-08-19 06:09:40,938 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:09:40" (1/1) ... [2020-08-19 06:09:40,957 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:09:40" (1/1) ... [2020-08-19 06:09:40,971 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:09:40" (1/1) ... [2020-08-19 06:09:40,976 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:09:40" (1/1) ... [2020-08-19 06:09:40,985 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 06:09:40,986 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 06:09:40,986 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 06:09:40,986 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 06:09:40,987 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:09:40" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 06:09:41,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 06:09:41,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 06:09:41,047 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-19 06:09:41,047 INFO L138 BoogieDeclarations]: Found implementation of procedure write_side1_failed_history [2020-08-19 06:09:41,048 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2020-08-19 06:09:41,048 INFO L138 BoogieDeclarations]: Found implementation of procedure write_side2_failed_history [2020-08-19 06:09:41,048 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2020-08-19 06:09:41,048 INFO L138 BoogieDeclarations]: Found implementation of procedure write_active_side_history [2020-08-19 06:09:41,048 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2020-08-19 06:09:41,048 INFO L138 BoogieDeclarations]: Found implementation of procedure write_manual_selection_history [2020-08-19 06:09:41,049 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2020-08-19 06:09:41,049 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-08-19 06:09:41,049 INFO L138 BoogieDeclarations]: Found implementation of procedure flip_the_side [2020-08-19 06:09:41,049 INFO L138 BoogieDeclarations]: Found implementation of procedure Console_task_each_pals_period [2020-08-19 06:09:41,049 INFO L138 BoogieDeclarations]: Found implementation of procedure Side1_activestandby_task_each_pals_period [2020-08-19 06:09:41,049 INFO L138 BoogieDeclarations]: Found implementation of procedure Side2_activestandby_task_each_pals_period [2020-08-19 06:09:41,050 INFO L138 BoogieDeclarations]: Found implementation of procedure Pendulum_prism_task_each_pals_period [2020-08-19 06:09:41,050 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-08-19 06:09:41,050 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 06:09:41,050 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-08-19 06:09:41,050 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 06:09:41,050 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-19 06:09:41,051 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-19 06:09:41,051 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-08-19 06:09:41,051 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-08-19 06:09:41,051 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-08-19 06:09:41,051 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 06:09:41,051 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-19 06:09:41,052 INFO L130 BoogieDeclarations]: Found specification of procedure write_side1_failed_history [2020-08-19 06:09:41,052 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2020-08-19 06:09:41,052 INFO L130 BoogieDeclarations]: Found specification of procedure write_side2_failed_history [2020-08-19 06:09:41,052 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2020-08-19 06:09:41,052 INFO L130 BoogieDeclarations]: Found specification of procedure write_active_side_history [2020-08-19 06:09:41,052 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2020-08-19 06:09:41,052 INFO L130 BoogieDeclarations]: Found specification of procedure write_manual_selection_history [2020-08-19 06:09:41,053 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2020-08-19 06:09:41,053 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-08-19 06:09:41,053 INFO L130 BoogieDeclarations]: Found specification of procedure flip_the_side [2020-08-19 06:09:41,053 INFO L130 BoogieDeclarations]: Found specification of procedure Console_task_each_pals_period [2020-08-19 06:09:41,053 INFO L130 BoogieDeclarations]: Found specification of procedure Side1_activestandby_task_each_pals_period [2020-08-19 06:09:41,053 INFO L130 BoogieDeclarations]: Found specification of procedure Side2_activestandby_task_each_pals_period [2020-08-19 06:09:41,054 INFO L130 BoogieDeclarations]: Found specification of procedure Pendulum_prism_task_each_pals_period [2020-08-19 06:09:41,054 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-08-19 06:09:41,054 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 06:09:41,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 06:09:41,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 06:09:41,977 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 06:09:41,978 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-19 06:09:41,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:09:41 BoogieIcfgContainer [2020-08-19 06:09:41,984 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 06:09:41,986 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 06:09:41,986 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 06:09:41,989 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 06:09:41,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 06:09:40" (1/3) ... [2020-08-19 06:09:41,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a659a92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:09:41, skipping insertion in model container [2020-08-19 06:09:41,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:09:40" (2/3) ... [2020-08-19 06:09:41,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a659a92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:09:41, skipping insertion in model container [2020-08-19 06:09:41,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:09:41" (3/3) ... [2020-08-19 06:09:41,993 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.1.ufo.BOUNDED-10.pals.c [2020-08-19 06:09:42,004 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 06:09:42,012 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 06:09:42,024 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 06:09:42,048 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 06:09:42,048 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 06:09:42,048 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 06:09:42,049 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 06:09:42,049 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 06:09:42,049 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 06:09:42,049 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 06:09:42,050 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 06:09:42,076 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states. [2020-08-19 06:09:42,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-08-19 06:09:42,088 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:09:42,089 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:09:42,090 INFO L427 AbstractCegarLoop]: === Iteration 1 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:09:42,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:09:42,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1541207534, now seen corresponding path program 1 times [2020-08-19 06:09:42,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:09:42,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1105509497] [2020-08-19 06:09:42,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:09:42,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:42,609 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-19 06:09:42,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:09:42,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:42,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:09:42,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:42,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 06:09:42,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:42,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:09:42,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:42,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:09:42,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:42,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 06:09:42,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:42,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:09:42,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:42,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 06:09:42,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:42,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:09:42,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:42,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:09:42,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1105509497] [2020-08-19 06:09:42,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:09:42,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 06:09:42,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446453298] [2020-08-19 06:09:42,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 06:09:42,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:09:42,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 06:09:42,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-08-19 06:09:42,896 INFO L87 Difference]: Start difference. First operand 243 states. Second operand 9 states. [2020-08-19 06:09:44,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:09:44,537 INFO L93 Difference]: Finished difference Result 463 states and 711 transitions. [2020-08-19 06:09:44,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 06:09:44,541 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 71 [2020-08-19 06:09:44,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:09:44,557 INFO L225 Difference]: With dead ends: 463 [2020-08-19 06:09:44,558 INFO L226 Difference]: Without dead ends: 238 [2020-08-19 06:09:44,571 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 [2020-08-19 06:09:44,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-08-19 06:09:44,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2020-08-19 06:09:44,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-08-19 06:09:44,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 343 transitions. [2020-08-19 06:09:44,665 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 343 transitions. Word has length 71 [2020-08-19 06:09:44,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:09:44,666 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 343 transitions. [2020-08-19 06:09:44,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 06:09:44,666 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 343 transitions. [2020-08-19 06:09:44,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-08-19 06:09:44,670 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:09:44,670 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:09:44,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 06:09:44,671 INFO L427 AbstractCegarLoop]: === Iteration 2 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:09:44,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:09:44,672 INFO L82 PathProgramCache]: Analyzing trace with hash -508602450, now seen corresponding path program 1 times [2020-08-19 06:09:44,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:09:44,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1784773924] [2020-08-19 06:09:44,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:09:44,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:44,925 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-19 06:09:44,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:09:44,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:44,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:09:44,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:44,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 06:09:44,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:44,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:09:45,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:45,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:09:45,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:45,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 06:09:45,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:45,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:09:45,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:45,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 06:09:45,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:45,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:09:45,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:45,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:09:45,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1784773924] [2020-08-19 06:09:45,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:09:45,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-19 06:09:45,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042824370] [2020-08-19 06:09:45,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-19 06:09:45,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:09:45,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-19 06:09:45,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-08-19 06:09:45,182 INFO L87 Difference]: Start difference. First operand 238 states and 343 transitions. Second operand 14 states. [2020-08-19 06:09:45,363 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-19 06:09:45,596 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-19 06:09:45,767 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-19 06:09:48,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:09:48,293 INFO L93 Difference]: Finished difference Result 467 states and 671 transitions. [2020-08-19 06:09:48,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-19 06:09:48,294 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 71 [2020-08-19 06:09:48,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:09:48,298 INFO L225 Difference]: With dead ends: 467 [2020-08-19 06:09:48,299 INFO L226 Difference]: Without dead ends: 248 [2020-08-19 06:09:48,301 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-08-19 06:09:48,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-08-19 06:09:48,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 238. [2020-08-19 06:09:48,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-08-19 06:09:48,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 331 transitions. [2020-08-19 06:09:48,340 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 331 transitions. Word has length 71 [2020-08-19 06:09:48,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:09:48,340 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 331 transitions. [2020-08-19 06:09:48,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-19 06:09:48,341 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 331 transitions. [2020-08-19 06:09:48,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-19 06:09:48,343 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:09:48,344 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:09:48,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 06:09:48,344 INFO L427 AbstractCegarLoop]: === Iteration 3 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:09:48,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:09:48,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1489036951, now seen corresponding path program 1 times [2020-08-19 06:09:48,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:09:48,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1885353668] [2020-08-19 06:09:48,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:09:48,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:48,615 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-19 06:09:48,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:09:48,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:48,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:09:48,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:48,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:09:48,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:48,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-19 06:09:48,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:48,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:09:48,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:48,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 06:09:48,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:48,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:09:48,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:48,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 06:09:48,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:48,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:09:48,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:48,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:09:48,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1885353668] [2020-08-19 06:09:48,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:09:48,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 06:09:48,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713193266] [2020-08-19 06:09:48,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 06:09:48,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:09:48,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 06:09:48,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-08-19 06:09:48,799 INFO L87 Difference]: Start difference. First operand 238 states and 331 transitions. Second operand 11 states. [2020-08-19 06:09:49,841 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-19 06:09:49,967 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-19 06:09:51,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:09:51,028 INFO L93 Difference]: Finished difference Result 456 states and 647 transitions. [2020-08-19 06:09:51,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 06:09:51,028 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 82 [2020-08-19 06:09:51,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:09:51,031 INFO L225 Difference]: With dead ends: 456 [2020-08-19 06:09:51,031 INFO L226 Difference]: Without dead ends: 242 [2020-08-19 06:09:51,033 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 [2020-08-19 06:09:51,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-08-19 06:09:51,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2020-08-19 06:09:51,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-08-19 06:09:51,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 334 transitions. [2020-08-19 06:09:51,073 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 334 transitions. Word has length 82 [2020-08-19 06:09:51,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:09:51,074 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 334 transitions. [2020-08-19 06:09:51,074 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 06:09:51,074 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 334 transitions. [2020-08-19 06:09:51,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-08-19 06:09:51,076 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:09:51,077 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:09:51,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 06:09:51,077 INFO L427 AbstractCegarLoop]: === Iteration 4 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:09:51,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:09:51,077 INFO L82 PathProgramCache]: Analyzing trace with hash -2124611218, now seen corresponding path program 1 times [2020-08-19 06:09:51,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:09:51,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1052578111] [2020-08-19 06:09:51,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:09:51,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:51,304 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-19 06:09:51,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:09:51,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:51,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:09:51,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:51,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:09:51,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:51,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-19 06:09:51,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:51,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:09:51,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:51,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 06:09:51,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:51,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:09:51,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:51,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 06:09:51,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:51,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:09:51,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:51,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-19 06:09:51,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:51,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:09:51,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:51,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-19 06:09:51,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:51,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-19 06:09:51,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:51,619 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-19 06:09:51,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1052578111] [2020-08-19 06:09:51,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:09:51,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-08-19 06:09:51,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500588080] [2020-08-19 06:09:51,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-19 06:09:51,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:09:51,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-19 06:09:51,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-08-19 06:09:51,622 INFO L87 Difference]: Start difference. First operand 242 states and 334 transitions. Second operand 16 states. [2020-08-19 06:09:51,821 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-19 06:09:53,677 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-19 06:09:55,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:09:55,458 INFO L93 Difference]: Finished difference Result 551 states and 760 transitions. [2020-08-19 06:09:55,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-19 06:09:55,458 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 104 [2020-08-19 06:09:55,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:09:55,466 INFO L225 Difference]: With dead ends: 551 [2020-08-19 06:09:55,466 INFO L226 Difference]: Without dead ends: 333 [2020-08-19 06:09:55,469 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=299, Invalid=891, Unknown=0, NotChecked=0, Total=1190 [2020-08-19 06:09:55,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2020-08-19 06:09:55,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 332. [2020-08-19 06:09:55,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2020-08-19 06:09:55,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 449 transitions. [2020-08-19 06:09:55,539 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 449 transitions. Word has length 104 [2020-08-19 06:09:55,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:09:55,540 INFO L479 AbstractCegarLoop]: Abstraction has 332 states and 449 transitions. [2020-08-19 06:09:55,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-19 06:09:55,541 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 449 transitions. [2020-08-19 06:09:55,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-08-19 06:09:55,549 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:09:55,549 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:09:55,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 06:09:55,550 INFO L427 AbstractCegarLoop]: === Iteration 5 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:09:55,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:09:55,550 INFO L82 PathProgramCache]: Analyzing trace with hash 1802435784, now seen corresponding path program 1 times [2020-08-19 06:09:55,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:09:55,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1409811832] [2020-08-19 06:09:55,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:09:55,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:55,796 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-19 06:09:55,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:09:55,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:55,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:09:55,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:55,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:09:55,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:55,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-19 06:09:55,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:55,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:09:55,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:55,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 06:09:55,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:55,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:09:55,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:55,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 06:09:55,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:55,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:09:55,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:56,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-19 06:09:56,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:56,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:09:56,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:56,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:09:56,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:56,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-19 06:09:56,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:56,129 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-19 06:09:56,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1409811832] [2020-08-19 06:09:56,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:09:56,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-08-19 06:09:56,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732750636] [2020-08-19 06:09:56,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-19 06:09:56,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:09:56,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-19 06:09:56,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-08-19 06:09:56,133 INFO L87 Difference]: Start difference. First operand 332 states and 449 transitions. Second operand 16 states. [2020-08-19 06:09:56,328 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-19 06:09:58,006 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-19 06:09:59,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:09:59,890 INFO L93 Difference]: Finished difference Result 557 states and 768 transitions. [2020-08-19 06:09:59,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-19 06:09:59,896 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 105 [2020-08-19 06:09:59,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:09:59,900 INFO L225 Difference]: With dead ends: 557 [2020-08-19 06:09:59,900 INFO L226 Difference]: Without dead ends: 336 [2020-08-19 06:09:59,902 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=299, Invalid=891, Unknown=0, NotChecked=0, Total=1190 [2020-08-19 06:09:59,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2020-08-19 06:09:59,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 332. [2020-08-19 06:09:59,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2020-08-19 06:09:59,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 449 transitions. [2020-08-19 06:09:59,936 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 449 transitions. Word has length 105 [2020-08-19 06:09:59,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:09:59,936 INFO L479 AbstractCegarLoop]: Abstraction has 332 states and 449 transitions. [2020-08-19 06:09:59,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-19 06:09:59,937 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 449 transitions. [2020-08-19 06:09:59,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-08-19 06:09:59,938 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:09:59,939 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:09:59,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 06:09:59,939 INFO L427 AbstractCegarLoop]: === Iteration 6 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:09:59,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:09:59,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1848316150, now seen corresponding path program 1 times [2020-08-19 06:09:59,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:09:59,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [264524474] [2020-08-19 06:09:59,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:09:59,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:00,170 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-19 06:10:00,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:10:00,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:00,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:10:00,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:00,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:10:00,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:00,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-19 06:10:00,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:00,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:10:00,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:00,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 06:10:00,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:00,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:10:00,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:00,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 06:10:00,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:00,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:10:00,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:00,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-19 06:10:00,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:00,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:10:00,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:00,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 06:10:00,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:00,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-19 06:10:00,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:00,423 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-19 06:10:00,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [264524474] [2020-08-19 06:10:00,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:10:00,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 06:10:00,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002909064] [2020-08-19 06:10:00,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 06:10:00,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:10:00,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 06:10:00,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-08-19 06:10:00,429 INFO L87 Difference]: Start difference. First operand 332 states and 449 transitions. Second operand 12 states. [2020-08-19 06:10:01,127 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-19 06:10:04,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:10:04,000 INFO L93 Difference]: Finished difference Result 791 states and 1096 transitions. [2020-08-19 06:10:04,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-19 06:10:04,001 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 107 [2020-08-19 06:10:04,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:10:04,006 INFO L225 Difference]: With dead ends: 791 [2020-08-19 06:10:04,007 INFO L226 Difference]: Without dead ends: 570 [2020-08-19 06:10:04,009 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 [2020-08-19 06:10:04,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2020-08-19 06:10:04,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 552. [2020-08-19 06:10:04,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 552 states. [2020-08-19 06:10:04,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 760 transitions. [2020-08-19 06:10:04,103 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 760 transitions. Word has length 107 [2020-08-19 06:10:04,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:10:04,104 INFO L479 AbstractCegarLoop]: Abstraction has 552 states and 760 transitions. [2020-08-19 06:10:04,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 06:10:04,104 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 760 transitions. [2020-08-19 06:10:04,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-08-19 06:10:04,106 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:10:04,106 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:10:04,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 06:10:04,107 INFO L427 AbstractCegarLoop]: === Iteration 7 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:10:04,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:10:04,107 INFO L82 PathProgramCache]: Analyzing trace with hash -723997746, now seen corresponding path program 1 times [2020-08-19 06:10:04,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:10:04,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [967857947] [2020-08-19 06:10:04,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:10:04,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:04,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:10:04,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:04,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:10:04,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:04,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:10:04,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:04,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-19 06:10:04,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:04,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:10:04,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:04,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 06:10:04,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:04,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:10:04,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:04,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-19 06:10:04,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:04,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:10:04,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:04,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-19 06:10:04,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:04,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:10:04,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:04,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 06:10:04,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:04,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-19 06:10:04,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:04,489 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-19 06:10:04,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [967857947] [2020-08-19 06:10:04,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:10:04,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 06:10:04,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875357757] [2020-08-19 06:10:04,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 06:10:04,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:10:04,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 06:10:04,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-08-19 06:10:04,492 INFO L87 Difference]: Start difference. First operand 552 states and 760 transitions. Second operand 12 states. [2020-08-19 06:10:04,704 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-19 06:10:08,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:10:08,321 INFO L93 Difference]: Finished difference Result 968 states and 1350 transitions. [2020-08-19 06:10:08,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-19 06:10:08,322 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 109 [2020-08-19 06:10:08,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:10:08,328 INFO L225 Difference]: With dead ends: 968 [2020-08-19 06:10:08,328 INFO L226 Difference]: Without dead ends: 570 [2020-08-19 06:10:08,330 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2020-08-19 06:10:08,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2020-08-19 06:10:08,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 552. [2020-08-19 06:10:08,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 552 states. [2020-08-19 06:10:08,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 758 transitions. [2020-08-19 06:10:08,391 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 758 transitions. Word has length 109 [2020-08-19 06:10:08,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:10:08,392 INFO L479 AbstractCegarLoop]: Abstraction has 552 states and 758 transitions. [2020-08-19 06:10:08,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 06:10:08,392 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 758 transitions. [2020-08-19 06:10:08,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-19 06:10:08,393 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:10:08,394 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:10:08,394 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 06:10:08,394 INFO L427 AbstractCegarLoop]: === Iteration 8 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:10:08,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:10:08,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1067489879, now seen corresponding path program 1 times [2020-08-19 06:10:08,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:10:08,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [544678275] [2020-08-19 06:10:08,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:10:08,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:08,613 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-19 06:10:08,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:10:08,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:08,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:10:08,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:08,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:10:08,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:08,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-19 06:10:08,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:08,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:10:08,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:08,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 06:10:08,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:08,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:10:08,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:08,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 06:10:08,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:08,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:10:08,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:08,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-19 06:10:08,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:08,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:10:08,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:08,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 06:10:08,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:08,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-19 06:10:08,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:08,934 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-19 06:10:08,935 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [544678275] [2020-08-19 06:10:08,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:10:08,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 06:10:08,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824931779] [2020-08-19 06:10:08,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 06:10:08,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:10:08,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 06:10:08,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-08-19 06:10:08,937 INFO L87 Difference]: Start difference. First operand 552 states and 758 transitions. Second operand 12 states. [2020-08-19 06:10:10,184 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-19 06:10:12,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:10:12,833 INFO L93 Difference]: Finished difference Result 1311 states and 1841 transitions. [2020-08-19 06:10:12,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-19 06:10:12,838 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 108 [2020-08-19 06:10:12,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:10:12,845 INFO L225 Difference]: With dead ends: 1311 [2020-08-19 06:10:12,845 INFO L226 Difference]: Without dead ends: 913 [2020-08-19 06:10:12,848 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2020-08-19 06:10:12,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2020-08-19 06:10:12,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 907. [2020-08-19 06:10:12,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 907 states. [2020-08-19 06:10:12,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 1263 transitions. [2020-08-19 06:10:12,944 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 1263 transitions. Word has length 108 [2020-08-19 06:10:12,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:10:12,944 INFO L479 AbstractCegarLoop]: Abstraction has 907 states and 1263 transitions. [2020-08-19 06:10:12,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 06:10:12,945 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 1263 transitions. [2020-08-19 06:10:12,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-19 06:10:12,947 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:10:12,947 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] [2020-08-19 06:10:12,947 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 06:10:12,947 INFO L427 AbstractCegarLoop]: === Iteration 9 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:10:12,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:10:12,948 INFO L82 PathProgramCache]: Analyzing trace with hash -212373799, now seen corresponding path program 1 times [2020-08-19 06:10:12,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:10:12,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2109509622] [2020-08-19 06:10:12,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:10:12,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:13,135 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-19 06:10:13,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:10:13,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:13,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:10:13,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:13,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:10:13,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:13,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-19 06:10:13,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:13,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:10:13,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:13,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 06:10:13,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:13,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:10:13,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:13,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 06:10:13,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:13,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:10:13,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:13,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-19 06:10:13,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:13,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:10:13,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:13,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 06:10:13,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:13,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-19 06:10:13,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:13,475 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-19 06:10:13,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2109509622] [2020-08-19 06:10:13,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:10:13,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-19 06:10:13,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718305887] [2020-08-19 06:10:13,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 06:10:13,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:10:13,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 06:10:13,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-19 06:10:13,478 INFO L87 Difference]: Start difference. First operand 907 states and 1263 transitions. Second operand 13 states. [2020-08-19 06:10:14,862 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-19 06:10:14,996 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-19 06:10:16,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:10:16,010 INFO L93 Difference]: Finished difference Result 1662 states and 2348 transitions. [2020-08-19 06:10:16,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 06:10:16,011 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 108 [2020-08-19 06:10:16,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:10:16,017 INFO L225 Difference]: With dead ends: 1662 [2020-08-19 06:10:16,017 INFO L226 Difference]: Without dead ends: 927 [2020-08-19 06:10:16,021 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2020-08-19 06:10:16,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2020-08-19 06:10:16,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 927. [2020-08-19 06:10:16,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 927 states. [2020-08-19 06:10:16,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 1279 transitions. [2020-08-19 06:10:16,113 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 1279 transitions. Word has length 108 [2020-08-19 06:10:16,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:10:16,113 INFO L479 AbstractCegarLoop]: Abstraction has 927 states and 1279 transitions. [2020-08-19 06:10:16,113 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 06:10:16,113 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 1279 transitions. [2020-08-19 06:10:16,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-08-19 06:10:16,115 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:10:16,116 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:10:16,116 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 06:10:16,116 INFO L427 AbstractCegarLoop]: === Iteration 10 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:10:16,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:10:16,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1747753163, now seen corresponding path program 1 times [2020-08-19 06:10:16,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:10:16,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1542100404] [2020-08-19 06:10:16,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:10:16,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:16,323 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-19 06:10:16,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:10:16,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:16,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:10:16,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:16,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:10:16,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:16,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-19 06:10:16,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:16,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:10:16,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:16,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 06:10:16,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:16,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:10:16,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:16,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 06:10:16,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:16,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:10:16,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:16,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-19 06:10:16,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:16,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:10:16,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:16,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 06:10:16,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:16,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-19 06:10:16,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:16,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-19 06:10:16,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:16,639 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-19 06:10:16,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1542100404] [2020-08-19 06:10:16,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:10:16,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-19 06:10:16,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187498879] [2020-08-19 06:10:16,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 06:10:16,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:10:16,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 06:10:16,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-19 06:10:16,644 INFO L87 Difference]: Start difference. First operand 927 states and 1279 transitions. Second operand 13 states. [2020-08-19 06:10:18,398 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-19 06:10:18,593 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-19 06:10:19,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:10:19,504 INFO L93 Difference]: Finished difference Result 1702 states and 2392 transitions. [2020-08-19 06:10:19,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 06:10:19,504 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 116 [2020-08-19 06:10:19,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:10:19,511 INFO L225 Difference]: With dead ends: 1702 [2020-08-19 06:10:19,511 INFO L226 Difference]: Without dead ends: 947 [2020-08-19 06:10:19,515 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2020-08-19 06:10:19,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2020-08-19 06:10:19,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 947. [2020-08-19 06:10:19,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 947 states. [2020-08-19 06:10:19,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 947 states to 947 states and 1295 transitions. [2020-08-19 06:10:19,613 INFO L78 Accepts]: Start accepts. Automaton has 947 states and 1295 transitions. Word has length 116 [2020-08-19 06:10:19,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:10:19,613 INFO L479 AbstractCegarLoop]: Abstraction has 947 states and 1295 transitions. [2020-08-19 06:10:19,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 06:10:19,614 INFO L276 IsEmpty]: Start isEmpty. Operand 947 states and 1295 transitions. [2020-08-19 06:10:19,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-08-19 06:10:19,616 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:10:19,616 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:10:19,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 06:10:19,617 INFO L427 AbstractCegarLoop]: === Iteration 11 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:10:19,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:10:19,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1289634625, now seen corresponding path program 1 times [2020-08-19 06:10:19,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:10:19,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1350713769] [2020-08-19 06:10:19,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:10:19,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:19,825 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-19 06:10:19,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:10:19,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:19,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:10:19,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:19,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:10:19,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:19,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-19 06:10:19,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:19,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:10:19,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:19,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 06:10:19,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:19,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:10:19,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:19,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 06:10:19,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:19,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:10:19,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:20,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-19 06:10:20,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:20,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:10:20,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:20,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 06:10:20,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:20,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-19 06:10:20,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:20,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-19 06:10:20,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:20,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-19 06:10:20,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:20,072 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-19 06:10:20,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1350713769] [2020-08-19 06:10:20,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:10:20,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-19 06:10:20,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736367348] [2020-08-19 06:10:20,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 06:10:20,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:10:20,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 06:10:20,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-19 06:10:20,075 INFO L87 Difference]: Start difference. First operand 947 states and 1295 transitions. Second operand 13 states. [2020-08-19 06:10:21,683 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-19 06:10:21,832 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-19 06:10:22,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:10:22,605 INFO L93 Difference]: Finished difference Result 1738 states and 2408 transitions. [2020-08-19 06:10:22,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 06:10:22,606 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 124 [2020-08-19 06:10:22,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:10:22,613 INFO L225 Difference]: With dead ends: 1738 [2020-08-19 06:10:22,613 INFO L226 Difference]: Without dead ends: 963 [2020-08-19 06:10:22,617 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2020-08-19 06:10:22,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2020-08-19 06:10:22,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 963. [2020-08-19 06:10:22,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 963 states. [2020-08-19 06:10:22,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1307 transitions. [2020-08-19 06:10:22,722 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1307 transitions. Word has length 124 [2020-08-19 06:10:22,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:10:22,722 INFO L479 AbstractCegarLoop]: Abstraction has 963 states and 1307 transitions. [2020-08-19 06:10:22,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 06:10:22,723 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1307 transitions. [2020-08-19 06:10:22,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-08-19 06:10:22,727 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:10:22,727 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:10:22,727 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 06:10:22,728 INFO L427 AbstractCegarLoop]: === Iteration 12 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:10:22,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:10:22,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1471497757, now seen corresponding path program 1 times [2020-08-19 06:10:22,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:10:22,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1485681895] [2020-08-19 06:10:22,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:10:22,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:23,005 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-19 06:10:23,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:10:23,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:23,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:10:23,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:23,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:10:23,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:23,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-19 06:10:23,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:23,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:10:23,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:23,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 06:10:23,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:23,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:10:23,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:23,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 06:10:23,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:23,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:10:23,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:23,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-19 06:10:23,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:23,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:10:23,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:23,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 06:10:23,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:23,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-19 06:10:23,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:23,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-19 06:10:23,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:23,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-19 06:10:23,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:23,403 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-19 06:10:23,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1485681895] [2020-08-19 06:10:23,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:10:23,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-08-19 06:10:23,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868605511] [2020-08-19 06:10:23,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-19 06:10:23,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:10:23,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-19 06:10:23,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2020-08-19 06:10:23,407 INFO L87 Difference]: Start difference. First operand 963 states and 1307 transitions. Second operand 18 states. [2020-08-19 06:10:23,847 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 133 [2020-08-19 06:10:24,098 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-08-19 06:10:24,538 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-08-19 06:10:25,916 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-19 06:10:26,075 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-19 06:10:26,239 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-19 06:10:27,813 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-08-19 06:10:27,968 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-19 06:10:30,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:10:30,058 INFO L93 Difference]: Finished difference Result 2594 states and 3626 transitions. [2020-08-19 06:10:30,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-19 06:10:30,059 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 124 [2020-08-19 06:10:30,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:10:30,069 INFO L225 Difference]: With dead ends: 2594 [2020-08-19 06:10:30,070 INFO L226 Difference]: Without dead ends: 1791 [2020-08-19 06:10:30,073 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=410, Invalid=1230, Unknown=0, NotChecked=0, Total=1640 [2020-08-19 06:10:30,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1791 states. [2020-08-19 06:10:30,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1791 to 1549. [2020-08-19 06:10:30,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1549 states. [2020-08-19 06:10:30,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1549 states to 1549 states and 2123 transitions. [2020-08-19 06:10:30,245 INFO L78 Accepts]: Start accepts. Automaton has 1549 states and 2123 transitions. Word has length 124 [2020-08-19 06:10:30,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:10:30,246 INFO L479 AbstractCegarLoop]: Abstraction has 1549 states and 2123 transitions. [2020-08-19 06:10:30,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-19 06:10:30,246 INFO L276 IsEmpty]: Start isEmpty. Operand 1549 states and 2123 transitions. [2020-08-19 06:10:30,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-08-19 06:10:30,249 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:10:30,249 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:10:30,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 06:10:30,249 INFO L427 AbstractCegarLoop]: === Iteration 13 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:10:30,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:10:30,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1891846081, now seen corresponding path program 1 times [2020-08-19 06:10:30,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:10:30,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2000840624] [2020-08-19 06:10:30,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:10:30,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:30,442 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-19 06:10:30,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:10:30,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:30,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:10:30,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:30,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:10:30,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:30,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-19 06:10:30,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:30,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:10:30,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:30,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 06:10:30,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:30,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:10:30,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:30,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 06:10:30,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:30,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:10:30,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:30,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-19 06:10:30,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:30,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:10:30,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:30,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 06:10:30,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:30,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-19 06:10:30,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:30,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-19 06:10:30,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:30,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-19 06:10:30,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:30,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-19 06:10:30,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:30,709 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-08-19 06:10:30,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2000840624] [2020-08-19 06:10:30,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:10:30,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-19 06:10:30,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122366701] [2020-08-19 06:10:30,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 06:10:30,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:10:30,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 06:10:30,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-19 06:10:30,713 INFO L87 Difference]: Start difference. First operand 1549 states and 2123 transitions. Second operand 13 states. [2020-08-19 06:10:32,164 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-19 06:10:32,298 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-19 06:10:33,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:10:33,329 INFO L93 Difference]: Finished difference Result 2816 states and 3937 transitions. [2020-08-19 06:10:33,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 06:10:33,330 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 131 [2020-08-19 06:10:33,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:10:33,345 INFO L225 Difference]: With dead ends: 2816 [2020-08-19 06:10:33,345 INFO L226 Difference]: Without dead ends: 1589 [2020-08-19 06:10:33,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2020-08-19 06:10:33,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1589 states. [2020-08-19 06:10:33,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1589 to 1589. [2020-08-19 06:10:33,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1589 states. [2020-08-19 06:10:33,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1589 states to 1589 states and 2155 transitions. [2020-08-19 06:10:33,650 INFO L78 Accepts]: Start accepts. Automaton has 1589 states and 2155 transitions. Word has length 131 [2020-08-19 06:10:33,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:10:33,651 INFO L479 AbstractCegarLoop]: Abstraction has 1589 states and 2155 transitions. [2020-08-19 06:10:33,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 06:10:33,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1589 states and 2155 transitions. [2020-08-19 06:10:33,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-08-19 06:10:33,655 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:10:33,655 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:10:33,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-19 06:10:33,656 INFO L427 AbstractCegarLoop]: === Iteration 14 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:10:33,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:10:33,656 INFO L82 PathProgramCache]: Analyzing trace with hash -1235243833, now seen corresponding path program 1 times [2020-08-19 06:10:33,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:10:33,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1814963236] [2020-08-19 06:10:33,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:10:33,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:33,940 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-19 06:10:33,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:10:33,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:33,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:10:33,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:34,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:10:34,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:34,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-19 06:10:34,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:34,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:10:34,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:34,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 06:10:34,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:34,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:10:34,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:34,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 06:10:34,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:34,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:10:34,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:34,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-19 06:10:34,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:34,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:10:34,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:34,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 06:10:34,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:34,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-19 06:10:34,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:34,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-19 06:10:34,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:34,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-08-19 06:10:34,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:34,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-19 06:10:34,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:34,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-19 06:10:34,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:34,387 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-08-19 06:10:34,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1814963236] [2020-08-19 06:10:34,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:10:34,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 06:10:34,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356628508] [2020-08-19 06:10:34,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 06:10:34,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:10:34,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 06:10:34,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-08-19 06:10:34,390 INFO L87 Difference]: Start difference. First operand 1589 states and 2155 transitions. Second operand 12 states. [2020-08-19 06:10:34,619 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 134