/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 -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 [2020-08-18 11:29:43,595 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 11:29:43,597 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 11:29:43,621 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 11:29:43,622 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 11:29:43,623 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 11:29:43,624 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 11:29:43,626 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 11:29:43,628 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 11:29:43,629 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 11:29:43,630 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 11:29:43,631 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 11:29:43,632 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 11:29:43,633 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 11:29:43,634 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 11:29:43,635 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 11:29:43,636 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 11:29:43,637 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 11:29:43,639 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 11:29:43,641 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 11:29:43,642 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 11:29:43,645 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 11:29:43,648 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 11:29:43,649 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 11:29:43,651 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 11:29:43,651 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 11:29:43,651 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 11:29:43,652 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 11:29:43,653 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 11:29:43,654 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 11:29:43,654 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 11:29:43,655 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 11:29:43,655 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 11:29:43,656 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 11:29:43,657 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 11:29:43,657 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 11:29:43,658 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 11:29:43,658 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 11:29:43,658 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 11:29:43,659 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 11:29:43,660 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 11:29:43,661 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 11:29:43,683 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 11:29:43,684 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 11:29:43,685 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 11:29:43,685 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 11:29:43,686 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 11:29:43,686 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 11:29:43,686 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 11:29:43,686 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 11:29:43,686 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 11:29:43,687 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 11:29:43,687 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 11:29:43,687 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 11:29:43,687 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 11:29:43,687 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 11:29:43,688 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 11:29:43,688 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 11:29:43,688 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 11:29:43,688 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 11:29:43,688 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 11:29:43,689 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 11:29:43,689 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 11:29:43,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 11:29:43,689 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 11:29:43,689 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 11:29:43,690 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 11:29:43,690 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 11:29:43,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 11:29:43,690 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 11:29:43,690 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 11:29:43,691 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 [2020-08-18 11:29:43,979 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 11:29:43,991 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 11:29:43,995 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 11:29:43,996 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 11:29:43,997 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 11:29:43,998 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.BOUNDED-10.pals.c [2020-08-18 11:29:44,079 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2e8aa6900/0a8c2d40a6c44ab59f6aa90ab32448e3/FLAGce1b0bf0b [2020-08-18 11:29:44,652 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 11:29:44,653 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.BOUNDED-10.pals.c [2020-08-18 11:29:44,666 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2e8aa6900/0a8c2d40a6c44ab59f6aa90ab32448e3/FLAGce1b0bf0b [2020-08-18 11:29:44,944 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2e8aa6900/0a8c2d40a6c44ab59f6aa90ab32448e3 [2020-08-18 11:29:44,954 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 11:29:44,956 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 11:29:44,958 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 11:29:44,958 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 11:29:44,962 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 11:29:44,963 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:29:44" (1/1) ... [2020-08-18 11:29:44,968 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b54cc27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:29:44, skipping insertion in model container [2020-08-18 11:29:44,968 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:29:44" (1/1) ... [2020-08-18 11:29:44,977 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 11:29:45,018 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 11:29:45,408 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 11:29:45,424 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 11:29:45,538 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 11:29:45,561 INFO L208 MainTranslator]: Completed translation [2020-08-18 11:29:45,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:29:45 WrapperNode [2020-08-18 11:29:45,561 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 11:29:45,562 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 11:29:45,562 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 11:29:45,563 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 11:29:45,574 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:29:45" (1/1) ... [2020-08-18 11:29:45,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:29:45" (1/1) ... [2020-08-18 11:29:45,597 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:29:45" (1/1) ... [2020-08-18 11:29:45,601 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:29:45" (1/1) ... [2020-08-18 11:29:45,636 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:29:45" (1/1) ... [2020-08-18 11:29:45,657 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:29:45" (1/1) ... [2020-08-18 11:29:45,662 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:29:45" (1/1) ... [2020-08-18 11:29:45,668 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 11:29:45,668 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 11:29:45,668 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 11:29:45,669 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 11:29:45,670 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:29:45" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 11:29:45,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 11:29:45,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 11:29:45,735 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 11:29:45,735 INFO L138 BoogieDeclarations]: Found implementation of procedure write_side1_failed_history [2020-08-18 11:29:45,735 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2020-08-18 11:29:45,735 INFO L138 BoogieDeclarations]: Found implementation of procedure write_side2_failed_history [2020-08-18 11:29:45,736 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2020-08-18 11:29:45,736 INFO L138 BoogieDeclarations]: Found implementation of procedure write_active_side_history [2020-08-18 11:29:45,736 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2020-08-18 11:29:45,736 INFO L138 BoogieDeclarations]: Found implementation of procedure write_manual_selection_history [2020-08-18 11:29:45,736 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2020-08-18 11:29:45,737 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-08-18 11:29:45,737 INFO L138 BoogieDeclarations]: Found implementation of procedure flip_the_side [2020-08-18 11:29:45,737 INFO L138 BoogieDeclarations]: Found implementation of procedure Console_task_each_pals_period [2020-08-18 11:29:45,737 INFO L138 BoogieDeclarations]: Found implementation of procedure Side1_activestandby_task_each_pals_period [2020-08-18 11:29:45,737 INFO L138 BoogieDeclarations]: Found implementation of procedure Side2_activestandby_task_each_pals_period [2020-08-18 11:29:45,738 INFO L138 BoogieDeclarations]: Found implementation of procedure Pendulum_prism_task_each_pals_period [2020-08-18 11:29:45,738 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-08-18 11:29:45,738 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 11:29:45,738 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-08-18 11:29:45,738 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 11:29:45,738 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-18 11:29:45,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-18 11:29:45,739 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-08-18 11:29:45,739 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-08-18 11:29:45,739 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-08-18 11:29:45,739 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 11:29:45,739 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 11:29:45,740 INFO L130 BoogieDeclarations]: Found specification of procedure write_side1_failed_history [2020-08-18 11:29:45,740 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2020-08-18 11:29:45,740 INFO L130 BoogieDeclarations]: Found specification of procedure write_side2_failed_history [2020-08-18 11:29:45,740 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2020-08-18 11:29:45,740 INFO L130 BoogieDeclarations]: Found specification of procedure write_active_side_history [2020-08-18 11:29:45,740 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2020-08-18 11:29:45,740 INFO L130 BoogieDeclarations]: Found specification of procedure write_manual_selection_history [2020-08-18 11:29:45,741 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2020-08-18 11:29:45,741 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-08-18 11:29:45,741 INFO L130 BoogieDeclarations]: Found specification of procedure flip_the_side [2020-08-18 11:29:45,741 INFO L130 BoogieDeclarations]: Found specification of procedure Console_task_each_pals_period [2020-08-18 11:29:45,741 INFO L130 BoogieDeclarations]: Found specification of procedure Side1_activestandby_task_each_pals_period [2020-08-18 11:29:45,742 INFO L130 BoogieDeclarations]: Found specification of procedure Side2_activestandby_task_each_pals_period [2020-08-18 11:29:45,742 INFO L130 BoogieDeclarations]: Found specification of procedure Pendulum_prism_task_each_pals_period [2020-08-18 11:29:45,742 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-08-18 11:29:45,742 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 11:29:45,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 11:29:45,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 11:29:46,658 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 11:29:46,658 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-18 11:29:46,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:29:46 BoogieIcfgContainer [2020-08-18 11:29:46,666 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 11:29:46,667 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 11:29:46,667 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 11:29:46,671 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 11:29:46,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 11:29:44" (1/3) ... [2020-08-18 11:29:46,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6720d15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:29:46, skipping insertion in model container [2020-08-18 11:29:46,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:29:45" (2/3) ... [2020-08-18 11:29:46,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6720d15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:29:46, skipping insertion in model container [2020-08-18 11:29:46,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:29:46" (3/3) ... [2020-08-18 11:29:46,675 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.1.ufo.BOUNDED-10.pals.c [2020-08-18 11:29:46,686 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 11:29:46,695 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 11:29:46,710 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 11:29:46,739 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 11:29:46,739 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 11:29:46,739 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 11:29:46,739 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 11:29:46,740 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 11:29:46,740 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 11:29:46,740 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 11:29:46,740 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 11:29:46,765 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states. [2020-08-18 11:29:46,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-08-18 11:29:46,777 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:29:46,778 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:29:46,779 INFO L427 AbstractCegarLoop]: === Iteration 1 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:29:46,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:29:46,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1541207534, now seen corresponding path program 1 times [2020-08-18 11:29:46,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:29:46,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [705653546] [2020-08-18 11:29:46,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:29:46,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:29:47,329 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-18 11:29:47,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:29:47,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:29:47,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:29:47,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:29:47,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 11:29:47,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:29:47,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:29:47,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:29:47,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:29:47,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:29:47,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 11:29:47,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:29:47,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:29:47,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:29:47,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 11:29:47,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:29:47,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:29:47,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:29:47,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:29:47,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [705653546] [2020-08-18 11:29:47,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:29:47,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 11:29:47,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851148230] [2020-08-18 11:29:47,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 11:29:47,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:29:47,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 11:29:47,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-08-18 11:29:47,745 INFO L87 Difference]: Start difference. First operand 243 states. Second operand 9 states. [2020-08-18 11:29:49,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:29:49,516 INFO L93 Difference]: Finished difference Result 463 states and 711 transitions. [2020-08-18 11:29:49,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 11:29:49,521 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 71 [2020-08-18 11:29:49,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:29:49,546 INFO L225 Difference]: With dead ends: 463 [2020-08-18 11:29:49,547 INFO L226 Difference]: Without dead ends: 238 [2020-08-18 11:29:49,554 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2020-08-18 11:29:49,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-08-18 11:29:49,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2020-08-18 11:29:49,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-08-18 11:29:49,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 343 transitions. [2020-08-18 11:29:49,645 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 343 transitions. Word has length 71 [2020-08-18 11:29:49,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:29:49,646 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 343 transitions. [2020-08-18 11:29:49,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 11:29:49,646 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 343 transitions. [2020-08-18 11:29:49,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-08-18 11:29:49,650 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:29:49,651 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:29:49,651 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 11:29:49,651 INFO L427 AbstractCegarLoop]: === Iteration 2 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:29:49,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:29:49,652 INFO L82 PathProgramCache]: Analyzing trace with hash -508602450, now seen corresponding path program 1 times [2020-08-18 11:29:49,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:29:49,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1630406558] [2020-08-18 11:29:49,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:29:49,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:29:49,901 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-18 11:29:49,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:29:49,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:29:49,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:29:49,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:29:49,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 11:29:49,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:29:50,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:29:50,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:29:50,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:29:50,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:29:50,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 11:29:50,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:29:50,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:29:50,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:29:50,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 11:29:50,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:29:50,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:29:50,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:29:50,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:29:50,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1630406558] [2020-08-18 11:29:50,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:29:50,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-18 11:29:50,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421159820] [2020-08-18 11:29:50,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-18 11:29:50,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:29:50,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-18 11:29:50,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-08-18 11:29:50,228 INFO L87 Difference]: Start difference. First operand 238 states and 343 transitions. Second operand 14 states. [2020-08-18 11:29:50,400 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-18 11:29:50,612 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-18 11:29:50,768 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-18 11:29:53,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:29:53,299 INFO L93 Difference]: Finished difference Result 467 states and 671 transitions. [2020-08-18 11:29:53,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 11:29:53,300 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 71 [2020-08-18 11:29:53,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:29:53,306 INFO L225 Difference]: With dead ends: 467 [2020-08-18 11:29:53,306 INFO L226 Difference]: Without dead ends: 248 [2020-08-18 11:29:53,318 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-08-18 11:29:53,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-08-18 11:29:53,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 238. [2020-08-18 11:29:53,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-08-18 11:29:53,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 331 transitions. [2020-08-18 11:29:53,397 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 331 transitions. Word has length 71 [2020-08-18 11:29:53,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:29:53,398 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 331 transitions. [2020-08-18 11:29:53,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-18 11:29:53,398 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 331 transitions. [2020-08-18 11:29:53,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-18 11:29:53,410 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:29:53,411 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:29:53,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 11:29:53,411 INFO L427 AbstractCegarLoop]: === Iteration 3 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:29:53,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:29:53,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1489036951, now seen corresponding path program 1 times [2020-08-18 11:29:53,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:29:53,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1091100664] [2020-08-18 11:29:53,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:29:53,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:29:53,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:29:53,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:29:53,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:29:53,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:29:53,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 11:29:53,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:29:53,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 11:29:53,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:29:53,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:29:53,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:29:53,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 11:29:53,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:29:53,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:29:53,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:29:53,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 11:29:53,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:29:53,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:29:53,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:29:53,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:29:53,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1091100664] [2020-08-18 11:29:53,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:29:53,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 11:29:53,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162635127] [2020-08-18 11:29:53,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 11:29:53,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:29:53,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 11:29:53,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-08-18 11:29:53,853 INFO L87 Difference]: Start difference. First operand 238 states and 331 transitions. Second operand 11 states. [2020-08-18 11:29:54,829 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-18 11:29:54,959 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-18 11:29:56,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:29:56,057 INFO L93 Difference]: Finished difference Result 456 states and 647 transitions. [2020-08-18 11:29:56,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 11:29:56,058 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 82 [2020-08-18 11:29:56,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:29:56,062 INFO L225 Difference]: With dead ends: 456 [2020-08-18 11:29:56,062 INFO L226 Difference]: Without dead ends: 242 [2020-08-18 11:29:56,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=115, Invalid=227, Unknown=0, NotChecked=0, Total=342 [2020-08-18 11:29:56,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-08-18 11:29:56,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2020-08-18 11:29:56,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-08-18 11:29:56,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 334 transitions. [2020-08-18 11:29:56,101 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 334 transitions. Word has length 82 [2020-08-18 11:29:56,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:29:56,101 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 334 transitions. [2020-08-18 11:29:56,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 11:29:56,102 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 334 transitions. [2020-08-18 11:29:56,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-08-18 11:29:56,104 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:29:56,105 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:29:56,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 11:29:56,105 INFO L427 AbstractCegarLoop]: === Iteration 4 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:29:56,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:29:56,106 INFO L82 PathProgramCache]: Analyzing trace with hash -2124611218, now seen corresponding path program 1 times [2020-08-18 11:29:56,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:29:56,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1724312204] [2020-08-18 11:29:56,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:29:56,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:29:56,349 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-18 11:29:56,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:29:56,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:29:56,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:29:56,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:29:56,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 11:29:56,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:29:56,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 11:29:56,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:29:56,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:29:56,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:29:56,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 11:29:56,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:29:56,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:29:56,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:29:56,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 11:29:56,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:29:56,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:29:56,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:29:56,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 11:29:56,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:29:56,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:29:56,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:29:56,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-18 11:29:56,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:29:56,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 11:29:56,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:29:56,645 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 11:29:56,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1724312204] [2020-08-18 11:29:56,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:29:56,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-08-18 11:29:56,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124716868] [2020-08-18 11:29:56,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 11:29:56,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:29:56,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 11:29:56,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-08-18 11:29:56,648 INFO L87 Difference]: Start difference. First operand 242 states and 334 transitions. Second operand 16 states. [2020-08-18 11:29:56,826 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-18 11:29:58,734 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-18 11:30:00,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:30:00,580 INFO L93 Difference]: Finished difference Result 551 states and 760 transitions. [2020-08-18 11:30:00,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-18 11:30:00,581 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 104 [2020-08-18 11:30:00,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:30:00,586 INFO L225 Difference]: With dead ends: 551 [2020-08-18 11:30:00,587 INFO L226 Difference]: Without dead ends: 333 [2020-08-18 11:30:00,589 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=299, Invalid=891, Unknown=0, NotChecked=0, Total=1190 [2020-08-18 11:30:00,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2020-08-18 11:30:00,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 332. [2020-08-18 11:30:00,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2020-08-18 11:30:00,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 449 transitions. [2020-08-18 11:30:00,634 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 449 transitions. Word has length 104 [2020-08-18 11:30:00,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:30:00,635 INFO L479 AbstractCegarLoop]: Abstraction has 332 states and 449 transitions. [2020-08-18 11:30:00,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 11:30:00,635 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 449 transitions. [2020-08-18 11:30:00,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-08-18 11:30:00,638 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:30:00,638 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:30:00,638 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 11:30:00,638 INFO L427 AbstractCegarLoop]: === Iteration 5 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:30:00,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:30:00,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1802435784, now seen corresponding path program 1 times [2020-08-18 11:30:00,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:30:00,639 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [922624021] [2020-08-18 11:30:00,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:30:00,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:00,884 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-18 11:30:00,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:30:00,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:00,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:30:00,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:00,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 11:30:00,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:00,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 11:30:00,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:00,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:30:00,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:00,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 11:30:01,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:01,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:30:01,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:01,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 11:30:01,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:01,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:30:01,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:01,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 11:30:01,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:01,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:30:01,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:01,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:30:01,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:01,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-18 11:30:01,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:01,233 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 11:30:01,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [922624021] [2020-08-18 11:30:01,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:30:01,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-08-18 11:30:01,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577804205] [2020-08-18 11:30:01,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 11:30:01,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:30:01,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 11:30:01,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-08-18 11:30:01,236 INFO L87 Difference]: Start difference. First operand 332 states and 449 transitions. Second operand 16 states. [2020-08-18 11:30:01,409 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-18 11:30:03,059 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-08-18 11:30:03,257 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-18 11:30:05,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:30:05,181 INFO L93 Difference]: Finished difference Result 557 states and 768 transitions. [2020-08-18 11:30:05,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-18 11:30:05,182 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 105 [2020-08-18 11:30:05,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:30:05,185 INFO L225 Difference]: With dead ends: 557 [2020-08-18 11:30:05,186 INFO L226 Difference]: Without dead ends: 336 [2020-08-18 11:30:05,187 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=299, Invalid=891, Unknown=0, NotChecked=0, Total=1190 [2020-08-18 11:30:05,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2020-08-18 11:30:05,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 332. [2020-08-18 11:30:05,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2020-08-18 11:30:05,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 449 transitions. [2020-08-18 11:30:05,227 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 449 transitions. Word has length 105 [2020-08-18 11:30:05,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:30:05,227 INFO L479 AbstractCegarLoop]: Abstraction has 332 states and 449 transitions. [2020-08-18 11:30:05,228 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 11:30:05,228 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 449 transitions. [2020-08-18 11:30:05,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-08-18 11:30:05,229 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:30:05,229 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:30:05,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 11:30:05,230 INFO L427 AbstractCegarLoop]: === Iteration 6 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:30:05,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:30:05,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1848316150, now seen corresponding path program 1 times [2020-08-18 11:30:05,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:30:05,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669279270] [2020-08-18 11:30:05,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:30:05,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:05,435 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-18 11:30:05,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:30:05,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:05,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:30:05,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:05,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 11:30:05,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:05,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 11:30:05,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:05,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:30:05,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:05,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 11:30:05,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:05,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:30:05,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:05,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 11:30:05,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:05,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:30:05,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:05,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 11:30:05,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:05,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:30:05,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:05,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 11:30:05,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:05,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 11:30:05,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:05,719 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 11:30:05,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1669279270] [2020-08-18 11:30:05,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:30:05,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 11:30:05,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035449743] [2020-08-18 11:30:05,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 11:30:05,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:30:05,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 11:30:05,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-08-18 11:30:05,723 INFO L87 Difference]: Start difference. First operand 332 states and 449 transitions. Second operand 12 states. [2020-08-18 11:30:06,482 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-18 11:30:09,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:30:09,385 INFO L93 Difference]: Finished difference Result 791 states and 1096 transitions. [2020-08-18 11:30:09,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-18 11:30:09,386 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 107 [2020-08-18 11:30:09,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:30:09,393 INFO L225 Difference]: With dead ends: 791 [2020-08-18 11:30:09,393 INFO L226 Difference]: Without dead ends: 570 [2020-08-18 11:30:09,395 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2020-08-18 11:30:09,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2020-08-18 11:30:09,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 552. [2020-08-18 11:30:09,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 552 states. [2020-08-18 11:30:09,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 760 transitions. [2020-08-18 11:30:09,470 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 760 transitions. Word has length 107 [2020-08-18 11:30:09,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:30:09,470 INFO L479 AbstractCegarLoop]: Abstraction has 552 states and 760 transitions. [2020-08-18 11:30:09,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 11:30:09,471 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 760 transitions. [2020-08-18 11:30:09,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-08-18 11:30:09,473 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:30:09,473 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:30:09,473 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 11:30:09,474 INFO L427 AbstractCegarLoop]: === Iteration 7 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:30:09,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:30:09,474 INFO L82 PathProgramCache]: Analyzing trace with hash -723997746, now seen corresponding path program 1 times [2020-08-18 11:30:09,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:30:09,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2131623132] [2020-08-18 11:30:09,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:30:09,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:09,655 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-18 11:30:09,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:30:09,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:09,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:30:09,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:09,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 11:30:09,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:09,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 11:30:09,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:09,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:30:09,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:09,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 11:30:09,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:09,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:30:09,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:09,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-18 11:30:09,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:09,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:30:09,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:09,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-18 11:30:09,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:09,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:30:09,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:09,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 11:30:09,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:09,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-18 11:30:09,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:09,915 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 11:30:09,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2131623132] [2020-08-18 11:30:09,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:30:09,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 11:30:09,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302785033] [2020-08-18 11:30:09,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 11:30:09,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:30:09,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 11:30:09,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-08-18 11:30:09,942 INFO L87 Difference]: Start difference. First operand 552 states and 760 transitions. Second operand 12 states. [2020-08-18 11:30:10,103 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-18 11:30:13,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:30:13,807 INFO L93 Difference]: Finished difference Result 968 states and 1350 transitions. [2020-08-18 11:30:13,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-18 11:30:13,808 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 109 [2020-08-18 11:30:13,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:30:13,813 INFO L225 Difference]: With dead ends: 968 [2020-08-18 11:30:13,813 INFO L226 Difference]: Without dead ends: 570 [2020-08-18 11:30:13,816 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2020-08-18 11:30:13,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2020-08-18 11:30:13,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 552. [2020-08-18 11:30:13,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 552 states. [2020-08-18 11:30:13,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 758 transitions. [2020-08-18 11:30:13,885 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 758 transitions. Word has length 109 [2020-08-18 11:30:13,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:30:13,885 INFO L479 AbstractCegarLoop]: Abstraction has 552 states and 758 transitions. [2020-08-18 11:30:13,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 11:30:13,885 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 758 transitions. [2020-08-18 11:30:13,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-18 11:30:13,887 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:30:13,887 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:30:13,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 11:30:13,888 INFO L427 AbstractCegarLoop]: === Iteration 8 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:30:13,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:30:13,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1067489879, now seen corresponding path program 1 times [2020-08-18 11:30:13,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:30:13,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [875933420] [2020-08-18 11:30:13,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:30:13,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:14,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:30:14,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:14,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:30:14,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:14,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 11:30:14,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:14,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 11:30:14,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:14,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:30:14,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:14,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 11:30:14,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:14,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:30:14,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:14,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 11:30:14,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:14,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:30:14,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:14,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 11:30:14,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:14,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:30:14,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:14,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 11:30:14,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:14,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 11:30:14,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:14,315 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 11:30:14,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [875933420] [2020-08-18 11:30:14,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:30:14,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 11:30:14,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661392591] [2020-08-18 11:30:14,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 11:30:14,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:30:14,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 11:30:14,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-08-18 11:30:14,318 INFO L87 Difference]: Start difference. First operand 552 states and 758 transitions. Second operand 12 states. [2020-08-18 11:30:15,386 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-18 11:30:17,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:30:17,842 INFO L93 Difference]: Finished difference Result 1311 states and 1841 transitions. [2020-08-18 11:30:17,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-18 11:30:17,844 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 108 [2020-08-18 11:30:17,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:30:17,851 INFO L225 Difference]: With dead ends: 1311 [2020-08-18 11:30:17,852 INFO L226 Difference]: Without dead ends: 913 [2020-08-18 11:30:17,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2020-08-18 11:30:17,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2020-08-18 11:30:17,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 907. [2020-08-18 11:30:17,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 907 states. [2020-08-18 11:30:17,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 1263 transitions. [2020-08-18 11:30:17,977 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 1263 transitions. Word has length 108 [2020-08-18 11:30:17,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:30:17,978 INFO L479 AbstractCegarLoop]: Abstraction has 907 states and 1263 transitions. [2020-08-18 11:30:17,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 11:30:17,978 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 1263 transitions. [2020-08-18 11:30:17,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-18 11:30:17,980 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:30:17,981 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:30:17,981 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 11:30:17,981 INFO L427 AbstractCegarLoop]: === Iteration 9 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:30:17,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:30:17,981 INFO L82 PathProgramCache]: Analyzing trace with hash -212373799, now seen corresponding path program 1 times [2020-08-18 11:30:17,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:30:17,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [796069420] [2020-08-18 11:30:17,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:30:18,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:18,192 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-18 11:30:18,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:30:18,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:18,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:30:18,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:18,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 11:30:18,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:18,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 11:30:18,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:18,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:30:18,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:18,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 11:30:18,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:18,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:30:18,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:18,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 11:30:18,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:18,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:30:18,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:18,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 11:30:18,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:18,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:30:18,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:18,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 11:30:18,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:18,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 11:30:18,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:18,402 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 11:30:18,402 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [796069420] [2020-08-18 11:30:18,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:30:18,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-18 11:30:18,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342815863] [2020-08-18 11:30:18,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 11:30:18,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:30:18,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 11:30:18,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-18 11:30:18,404 INFO L87 Difference]: Start difference. First operand 907 states and 1263 transitions. Second operand 13 states. [2020-08-18 11:30:19,979 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-18 11:30:20,112 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-18 11:30:21,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:30:21,115 INFO L93 Difference]: Finished difference Result 1662 states and 2348 transitions. [2020-08-18 11:30:21,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 11:30:21,116 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 108 [2020-08-18 11:30:21,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:30:21,122 INFO L225 Difference]: With dead ends: 1662 [2020-08-18 11:30:21,123 INFO L226 Difference]: Without dead ends: 927 [2020-08-18 11:30:21,126 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2020-08-18 11:30:21,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2020-08-18 11:30:21,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 927. [2020-08-18 11:30:21,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 927 states. [2020-08-18 11:30:21,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 1279 transitions. [2020-08-18 11:30:21,228 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 1279 transitions. Word has length 108 [2020-08-18 11:30:21,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:30:21,228 INFO L479 AbstractCegarLoop]: Abstraction has 927 states and 1279 transitions. [2020-08-18 11:30:21,228 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 11:30:21,229 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 1279 transitions. [2020-08-18 11:30:21,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-08-18 11:30:21,231 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:30:21,231 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:30:21,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 11:30:21,231 INFO L427 AbstractCegarLoop]: === Iteration 10 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:30:21,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:30:21,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1747753163, now seen corresponding path program 1 times [2020-08-18 11:30:21,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:30:21,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1718421960] [2020-08-18 11:30:21,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:30:21,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:21,457 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-18 11:30:21,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:30:21,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:21,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:30:21,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:21,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 11:30:21,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:21,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 11:30:21,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:21,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:30:21,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:21,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 11:30:21,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:21,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:30:21,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:21,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 11:30:21,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:21,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:30:21,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:21,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 11:30:21,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:21,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:30:21,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:21,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 11:30:21,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:21,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 11:30:21,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:21,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 11:30:21,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:21,669 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 11:30:21,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1718421960] [2020-08-18 11:30:21,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:30:21,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-18 11:30:21,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144204795] [2020-08-18 11:30:21,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 11:30:21,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:30:21,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 11:30:21,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-18 11:30:21,672 INFO L87 Difference]: Start difference. First operand 927 states and 1279 transitions. Second operand 13 states. [2020-08-18 11:30:23,063 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-18 11:30:23,219 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-18 11:30:24,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:30:24,125 INFO L93 Difference]: Finished difference Result 1702 states and 2392 transitions. [2020-08-18 11:30:24,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 11:30:24,125 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 116 [2020-08-18 11:30:24,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:30:24,132 INFO L225 Difference]: With dead ends: 1702 [2020-08-18 11:30:24,133 INFO L226 Difference]: Without dead ends: 947 [2020-08-18 11:30:24,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2020-08-18 11:30:24,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2020-08-18 11:30:24,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 947. [2020-08-18 11:30:24,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 947 states. [2020-08-18 11:30:24,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 947 states to 947 states and 1295 transitions. [2020-08-18 11:30:24,237 INFO L78 Accepts]: Start accepts. Automaton has 947 states and 1295 transitions. Word has length 116 [2020-08-18 11:30:24,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:30:24,237 INFO L479 AbstractCegarLoop]: Abstraction has 947 states and 1295 transitions. [2020-08-18 11:30:24,238 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 11:30:24,238 INFO L276 IsEmpty]: Start isEmpty. Operand 947 states and 1295 transitions. [2020-08-18 11:30:24,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-08-18 11:30:24,242 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:30:24,242 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:30:24,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 11:30:24,243 INFO L427 AbstractCegarLoop]: === Iteration 11 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:30:24,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:30:24,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1289634625, now seen corresponding path program 1 times [2020-08-18 11:30:24,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:30:24,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1661952523] [2020-08-18 11:30:24,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:30:24,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:24,446 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-18 11:30:24,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:30:24,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:24,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:30:24,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:24,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 11:30:24,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:24,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 11:30:24,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:24,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:30:24,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:24,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 11:30:24,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:24,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:30:24,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:24,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 11:30:24,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:24,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:30:24,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:24,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 11:30:24,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:24,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:30:24,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:24,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 11:30:24,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:24,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 11:30:24,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:24,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 11:30:24,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:24,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-18 11:30:24,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:24,661 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 11:30:24,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1661952523] [2020-08-18 11:30:24,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:30:24,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-18 11:30:24,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203071013] [2020-08-18 11:30:24,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 11:30:24,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:30:24,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 11:30:24,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-18 11:30:24,665 INFO L87 Difference]: Start difference. First operand 947 states and 1295 transitions. Second operand 13 states. [2020-08-18 11:30:26,341 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-18 11:30:26,474 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-18 11:30:27,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:30:27,180 INFO L93 Difference]: Finished difference Result 1738 states and 2408 transitions. [2020-08-18 11:30:27,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 11:30:27,181 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 124 [2020-08-18 11:30:27,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:30:27,186 INFO L225 Difference]: With dead ends: 1738 [2020-08-18 11:30:27,187 INFO L226 Difference]: Without dead ends: 963 [2020-08-18 11:30:27,191 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2020-08-18 11:30:27,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2020-08-18 11:30:27,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 963. [2020-08-18 11:30:27,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 963 states. [2020-08-18 11:30:27,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1307 transitions. [2020-08-18 11:30:27,288 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1307 transitions. Word has length 124 [2020-08-18 11:30:27,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:30:27,289 INFO L479 AbstractCegarLoop]: Abstraction has 963 states and 1307 transitions. [2020-08-18 11:30:27,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 11:30:27,289 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1307 transitions. [2020-08-18 11:30:27,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-08-18 11:30:27,291 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:30:27,291 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:30:27,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 11:30:27,292 INFO L427 AbstractCegarLoop]: === Iteration 12 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:30:27,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:30:27,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1471497757, now seen corresponding path program 1 times [2020-08-18 11:30:27,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:30:27,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626111292] [2020-08-18 11:30:27,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:30:27,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:27,480 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-18 11:30:27,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:30:27,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:27,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:30:27,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:27,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 11:30:27,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:27,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 11:30:27,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:27,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:30:27,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:27,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 11:30:27,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:27,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:30:27,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:27,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 11:30:27,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:27,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:30:27,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:27,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 11:30:27,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:27,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:30:27,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:27,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 11:30:27,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:27,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 11:30:27,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:27,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 11:30:27,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:27,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-18 11:30:27,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:27,855 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 11:30:27,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626111292] [2020-08-18 11:30:27,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:30:27,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-08-18 11:30:27,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999919778] [2020-08-18 11:30:27,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-18 11:30:27,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:30:27,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-18 11:30:27,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2020-08-18 11:30:27,861 INFO L87 Difference]: Start difference. First operand 963 states and 1307 transitions. Second operand 18 states. [2020-08-18 11:30:28,246 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 133 [2020-08-18 11:30:28,513 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-08-18 11:30:29,029 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-08-18 11:30:30,327 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-18 11:30:30,486 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-18 11:30:30,630 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-18 11:30:32,260 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-08-18 11:30:32,417 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-18 11:30:34,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:30:34,548 INFO L93 Difference]: Finished difference Result 2594 states and 3626 transitions. [2020-08-18 11:30:34,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-18 11:30:34,549 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 124 [2020-08-18 11:30:34,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:30:34,560 INFO L225 Difference]: With dead ends: 2594 [2020-08-18 11:30:34,561 INFO L226 Difference]: Without dead ends: 1791 [2020-08-18 11:30:34,565 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 [2020-08-18 11:30:34,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1791 states. [2020-08-18 11:30:34,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1791 to 1549. [2020-08-18 11:30:34,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1549 states. [2020-08-18 11:30:34,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1549 states to 1549 states and 2123 transitions. [2020-08-18 11:30:34,783 INFO L78 Accepts]: Start accepts. Automaton has 1549 states and 2123 transitions. Word has length 124 [2020-08-18 11:30:34,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:30:34,786 INFO L479 AbstractCegarLoop]: Abstraction has 1549 states and 2123 transitions. [2020-08-18 11:30:34,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-18 11:30:34,786 INFO L276 IsEmpty]: Start isEmpty. Operand 1549 states and 2123 transitions. [2020-08-18 11:30:34,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-08-18 11:30:34,789 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:30:34,789 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:30:34,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 11:30:34,789 INFO L427 AbstractCegarLoop]: === Iteration 13 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:30:34,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:30:34,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1891846081, now seen corresponding path program 1 times [2020-08-18 11:30:34,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:30:34,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1780783796] [2020-08-18 11:30:34,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:30:34,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:34,993 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-18 11:30:34,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:30:34,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:35,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:30:35,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:35,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 11:30:35,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:35,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 11:30:35,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:35,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:30:35,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:35,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 11:30:35,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:35,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:30:35,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:35,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 11:30:35,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:35,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:30:35,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:35,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 11:30:35,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:35,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:30:35,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:35,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 11:30:35,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:35,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 11:30:35,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:35,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 11:30:35,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:35,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-18 11:30:35,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:35,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-18 11:30:35,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:35,218 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-08-18 11:30:35,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1780783796] [2020-08-18 11:30:35,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:30:35,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-18 11:30:35,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762703952] [2020-08-18 11:30:35,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 11:30:35,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:30:35,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 11:30:35,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-18 11:30:35,222 INFO L87 Difference]: Start difference. First operand 1549 states and 2123 transitions. Second operand 13 states. [2020-08-18 11:30:36,716 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-18 11:30:36,851 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-18 11:30:37,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:30:37,814 INFO L93 Difference]: Finished difference Result 2816 states and 3937 transitions. [2020-08-18 11:30:37,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 11:30:37,815 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 131 [2020-08-18 11:30:37,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:30:37,829 INFO L225 Difference]: With dead ends: 2816 [2020-08-18 11:30:37,829 INFO L226 Difference]: Without dead ends: 1589 [2020-08-18 11:30:37,840 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 [2020-08-18 11:30:37,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1589 states. [2020-08-18 11:30:38,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1589 to 1589. [2020-08-18 11:30:38,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1589 states. [2020-08-18 11:30:38,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1589 states to 1589 states and 2155 transitions. [2020-08-18 11:30:38,125 INFO L78 Accepts]: Start accepts. Automaton has 1589 states and 2155 transitions. Word has length 131 [2020-08-18 11:30:38,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:30:38,128 INFO L479 AbstractCegarLoop]: Abstraction has 1589 states and 2155 transitions. [2020-08-18 11:30:38,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 11:30:38,128 INFO L276 IsEmpty]: Start isEmpty. Operand 1589 states and 2155 transitions. [2020-08-18 11:30:38,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-08-18 11:30:38,133 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:30:38,134 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] [2020-08-18 11:30:38,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-18 11:30:38,134 INFO L427 AbstractCegarLoop]: === Iteration 14 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:30:38,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:30:38,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1235243833, now seen corresponding path program 1 times [2020-08-18 11:30:38,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:30:38,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [898183175] [2020-08-18 11:30:38,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:30:38,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:38,394 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-18 11:30:38,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:30:38,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:38,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:30:38,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:38,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 11:30:38,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:38,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 11:30:38,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:38,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:30:38,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:38,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 11:30:38,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:38,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:30:38,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:38,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 11:30:38,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:38,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:30:38,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:38,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-18 11:30:38,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:38,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:30:38,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:38,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 11:30:38,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:38,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-18 11:30:38,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:38,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 11:30:38,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:38,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-08-18 11:30:38,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:38,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-18 11:30:38,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:38,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-18 11:30:38,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:38,765 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-08-18 11:30:38,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [898183175] [2020-08-18 11:30:38,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:30:38,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 11:30:38,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937759569] [2020-08-18 11:30:38,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 11:30:38,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:30:38,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 11:30:38,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-08-18 11:30:38,769 INFO L87 Difference]: Start difference. First operand 1589 states and 2155 transitions. Second operand 12 states. [2020-08-18 11:30:38,991 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 134