/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 -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 15:00:22,715 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 15:00:22,717 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 15:00:22,736 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 15:00:22,736 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 15:00:22,738 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 15:00:22,740 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 15:00:22,750 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 15:00:22,753 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 15:00:22,756 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 15:00:22,758 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 15:00:22,760 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 15:00:22,760 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 15:00:22,762 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 15:00:22,764 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 15:00:22,765 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 15:00:22,767 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 15:00:22,768 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 15:00:22,769 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 15:00:22,774 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 15:00:22,778 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 15:00:22,782 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 15:00:22,783 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 15:00:22,784 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 15:00:22,786 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 15:00:22,791 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-17 15:00:22,792 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-17 15:00:22,793 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-17 15:00:22,793 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-17 15:00:22,794 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-17 15:00:22,795 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-17 15:00:22,796 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-17 15:00:22,796 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-17 15:00:22,796 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 15:00:22,797 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 15:00:22,798 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 15:00:22,799 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-17 15:00:22,821 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 15:00:22,822 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 15:00:22,823 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 15:00:22,823 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 15:00:22,823 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 15:00:22,823 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 15:00:22,824 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 15:00:22,824 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 15:00:22,824 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 15:00:22,824 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 15:00:22,824 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 15:00:22,824 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 15:00:22,825 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 15:00:22,825 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 15:00:22,825 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 15:00:22,825 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-17 15:00:22,825 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 15:00:22,826 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 15:00:22,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 15:00:22,826 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 15:00:22,826 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-17 15:00:22,826 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 15:00:22,827 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-17 15:00:23,108 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 15:00:23,125 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 15:00:23,128 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 15:00:23,129 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 15:00:23,129 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 15:00:23,130 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-07-17 15:00:23,190 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/748a48be3/875cf203ba6d4872bd2d9e6c677a3d22/FLAG1e6d98228 [2020-07-17 15:00:23,670 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 15:00:23,671 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-07-17 15:00:23,696 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/748a48be3/875cf203ba6d4872bd2d9e6c677a3d22/FLAG1e6d98228 [2020-07-17 15:00:24,006 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/748a48be3/875cf203ba6d4872bd2d9e6c677a3d22 [2020-07-17 15:00:24,014 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 15:00:24,016 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 15:00:24,017 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 15:00:24,018 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 15:00:24,021 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 15:00:24,022 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 03:00:24" (1/1) ... [2020-07-17 15:00:24,025 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b52318f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 03:00:24, skipping insertion in model container [2020-07-17 15:00:24,025 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 03:00:24" (1/1) ... [2020-07-17 15:00:24,032 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 15:00:24,086 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 15:00:24,642 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 15:00:24,653 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 15:00:24,824 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 15:00:24,842 INFO L208 MainTranslator]: Completed translation [2020-07-17 15:00:24,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 03:00:24 WrapperNode [2020-07-17 15:00:24,843 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 15:00:24,844 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 15:00:24,844 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 15:00:24,844 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 15:00:24,856 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 03:00:24" (1/1) ... [2020-07-17 15:00:24,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 03:00:24" (1/1) ... [2020-07-17 15:00:24,870 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 03:00:24" (1/1) ... [2020-07-17 15:00:24,870 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 03:00:24" (1/1) ... [2020-07-17 15:00:24,895 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 03:00:24" (1/1) ... [2020-07-17 15:00:24,917 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 03:00:24" (1/1) ... [2020-07-17 15:00:24,921 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 03:00:24" (1/1) ... [2020-07-17 15:00:24,928 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 15:00:24,928 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 15:00:24,928 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 15:00:24,928 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 15:00:24,929 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 03:00:24" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-07-17 15:00:25,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 15:00:25,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 15:00:25,007 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-17 15:00:25,007 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 15:00:25,007 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 15:00:25,007 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-07-17 15:00:25,008 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-07-17 15:00:25,008 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-07-17 15:00:25,008 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-07-17 15:00:25,009 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-17 15:00:25,009 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-17 15:00:25,010 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-07-17 15:00:25,010 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-07-17 15:00:25,010 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-07-17 15:00:25,010 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-07-17 15:00:25,011 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-07-17 15:00:25,011 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-07-17 15:00:25,011 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-07-17 15:00:25,011 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 15:00:25,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 15:00:25,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 15:00:26,561 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 15:00:26,561 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-17 15:00:26,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 03:00:26 BoogieIcfgContainer [2020-07-17 15:00:26,572 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 15:00:26,573 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 15:00:26,573 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 15:00:26,577 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 15:00:26,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 03:00:24" (1/3) ... [2020-07-17 15:00:26,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f56f36c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 03:00:26, skipping insertion in model container [2020-07-17 15:00:26,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 03:00:24" (2/3) ... [2020-07-17 15:00:26,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f56f36c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 03:00:26, skipping insertion in model container [2020-07-17 15:00:26,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 03:00:26" (3/3) ... [2020-07-17 15:00:26,580 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-07-17 15:00:26,590 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-17 15:00:26,598 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 15:00:26,612 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 15:00:26,633 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 15:00:26,633 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 15:00:26,633 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-17 15:00:26,633 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 15:00:26,634 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 15:00:26,634 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 15:00:26,634 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 15:00:26,634 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 15:00:26,668 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states. [2020-07-17 15:00:26,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2020-07-17 15:00:26,702 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 15:00:26,704 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 15:00:26,705 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 15:00:26,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 15:00:26,711 INFO L82 PathProgramCache]: Analyzing trace with hash -361300248, now seen corresponding path program 1 times [2020-07-17 15:00:26,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 15:00:26,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [577587437] [2020-07-17 15:00:26,720 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 15:00:27,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:27,821 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-07-17 15:00:27,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:28,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 15:00:28,222 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 15:00:28,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [577587437] [2020-07-17 15:00:28,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 15:00:28,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-17 15:00:28,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972026494] [2020-07-17 15:00:28,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-17 15:00:28,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 15:00:28,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-17 15:00:28,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-17 15:00:28,257 INFO L87 Difference]: Start difference. First operand 813 states. Second operand 5 states. [2020-07-17 15:00:33,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 15:00:33,022 INFO L93 Difference]: Finished difference Result 2066 states and 2749 transitions. [2020-07-17 15:00:33,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-17 15:00:33,025 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 407 [2020-07-17 15:00:33,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 15:00:33,054 INFO L225 Difference]: With dead ends: 2066 [2020-07-17 15:00:33,055 INFO L226 Difference]: Without dead ends: 1236 [2020-07-17 15:00:33,063 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 193 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-17 15:00:33,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1236 states. [2020-07-17 15:00:33,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1236 to 1234. [2020-07-17 15:00:33,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1234 states. [2020-07-17 15:00:33,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 1502 transitions. [2020-07-17 15:00:33,225 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 1502 transitions. Word has length 407 [2020-07-17 15:00:33,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 15:00:33,227 INFO L479 AbstractCegarLoop]: Abstraction has 1234 states and 1502 transitions. [2020-07-17 15:00:33,227 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-17 15:00:33,227 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 1502 transitions. [2020-07-17 15:00:33,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2020-07-17 15:00:33,236 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 15:00:33,236 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 15:00:33,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 15:00:33,237 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 15:00:33,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 15:00:33,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1024696889, now seen corresponding path program 1 times [2020-07-17 15:00:33,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 15:00:33,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [946478670] [2020-07-17 15:00:33,238 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 15:00:33,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:33,623 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-07-17 15:00:33,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:33,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 15:00:33,789 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 15:00:33,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [946478670] [2020-07-17 15:00:33,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 15:00:33,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 15:00:33,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66650755] [2020-07-17 15:00:33,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 15:00:33,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 15:00:33,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 15:00:33,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 15:00:33,793 INFO L87 Difference]: Start difference. First operand 1234 states and 1502 transitions. Second operand 4 states. [2020-07-17 15:00:38,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 15:00:38,090 INFO L93 Difference]: Finished difference Result 3323 states and 4103 transitions. [2020-07-17 15:00:38,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 15:00:38,091 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 408 [2020-07-17 15:00:38,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 15:00:38,103 INFO L225 Difference]: With dead ends: 3323 [2020-07-17 15:00:38,104 INFO L226 Difference]: Without dead ends: 2294 [2020-07-17 15:00:38,108 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 248 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 15:00:38,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2294 states. [2020-07-17 15:00:38,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2294 to 1236. [2020-07-17 15:00:38,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1236 states. [2020-07-17 15:00:38,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 1504 transitions. [2020-07-17 15:00:38,213 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 1504 transitions. Word has length 408 [2020-07-17 15:00:38,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 15:00:38,215 INFO L479 AbstractCegarLoop]: Abstraction has 1236 states and 1504 transitions. [2020-07-17 15:00:38,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 15:00:38,216 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 1504 transitions. [2020-07-17 15:00:38,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2020-07-17 15:00:38,225 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 15:00:38,226 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 15:00:38,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 15:00:38,227 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 15:00:38,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 15:00:38,227 INFO L82 PathProgramCache]: Analyzing trace with hash -2025918869, now seen corresponding path program 1 times [2020-07-17 15:00:38,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 15:00:38,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [147271944] [2020-07-17 15:00:38,229 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 15:00:38,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:38,723 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-07-17 15:00:38,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:39,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 15:00:39,069 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 15:00:39,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [147271944] [2020-07-17 15:00:39,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 15:00:39,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 15:00:39,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677151414] [2020-07-17 15:00:39,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 15:00:39,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 15:00:39,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 15:00:39,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 15:00:39,082 INFO L87 Difference]: Start difference. First operand 1236 states and 1504 transitions. Second operand 4 states. [2020-07-17 15:00:42,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 15:00:42,861 INFO L93 Difference]: Finished difference Result 3066 states and 3785 transitions. [2020-07-17 15:00:42,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 15:00:42,862 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 409 [2020-07-17 15:00:42,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 15:00:42,874 INFO L225 Difference]: With dead ends: 3066 [2020-07-17 15:00:42,874 INFO L226 Difference]: Without dead ends: 2242 [2020-07-17 15:00:42,876 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 182 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 15:00:42,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2242 states. [2020-07-17 15:00:43,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2242 to 2240. [2020-07-17 15:00:43,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2240 states. [2020-07-17 15:00:43,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2240 states to 2240 states and 2743 transitions. [2020-07-17 15:00:43,027 INFO L78 Accepts]: Start accepts. Automaton has 2240 states and 2743 transitions. Word has length 409 [2020-07-17 15:00:43,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 15:00:43,028 INFO L479 AbstractCegarLoop]: Abstraction has 2240 states and 2743 transitions. [2020-07-17 15:00:43,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 15:00:43,028 INFO L276 IsEmpty]: Start isEmpty. Operand 2240 states and 2743 transitions. [2020-07-17 15:00:43,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2020-07-17 15:00:43,041 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 15:00:43,041 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 15:00:43,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-17 15:00:43,042 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 15:00:43,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 15:00:43,042 INFO L82 PathProgramCache]: Analyzing trace with hash 611806955, now seen corresponding path program 1 times [2020-07-17 15:00:43,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 15:00:43,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1951612017] [2020-07-17 15:00:43,044 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 15:00:43,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:43,515 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-07-17 15:00:43,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:43,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 15:00:43,786 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 15:00:43,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1951612017] [2020-07-17 15:00:43,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 15:00:43,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-17 15:00:43,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674200212] [2020-07-17 15:00:43,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-17 15:00:43,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 15:00:43,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-17 15:00:43,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-17 15:00:43,790 INFO L87 Difference]: Start difference. First operand 2240 states and 2743 transitions. Second operand 5 states. [2020-07-17 15:00:47,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 15:00:47,434 INFO L93 Difference]: Finished difference Result 5988 states and 7386 transitions. [2020-07-17 15:00:47,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-17 15:00:47,434 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 409 [2020-07-17 15:00:47,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 15:00:47,451 INFO L225 Difference]: With dead ends: 5988 [2020-07-17 15:00:47,451 INFO L226 Difference]: Without dead ends: 3924 [2020-07-17 15:00:47,456 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 192 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-17 15:00:47,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3924 states. [2020-07-17 15:00:47,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3924 to 3922. [2020-07-17 15:00:47,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3922 states. [2020-07-17 15:00:47,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3922 states to 3922 states and 4795 transitions. [2020-07-17 15:00:47,781 INFO L78 Accepts]: Start accepts. Automaton has 3922 states and 4795 transitions. Word has length 409 [2020-07-17 15:00:47,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 15:00:47,782 INFO L479 AbstractCegarLoop]: Abstraction has 3922 states and 4795 transitions. [2020-07-17 15:00:47,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-17 15:00:47,782 INFO L276 IsEmpty]: Start isEmpty. Operand 3922 states and 4795 transitions. [2020-07-17 15:00:47,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2020-07-17 15:00:47,790 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 15:00:47,791 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 15:00:47,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-17 15:00:47,791 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 15:00:47,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 15:00:47,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1169505706, now seen corresponding path program 1 times [2020-07-17 15:00:47,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 15:00:47,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [560849208] [2020-07-17 15:00:47,794 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 15:00:47,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:48,264 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-07-17 15:00:48,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:48,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 15:00:48,518 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 15:00:48,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [560849208] [2020-07-17 15:00:48,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 15:00:48,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-17 15:00:48,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587590500] [2020-07-17 15:00:48,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-17 15:00:48,520 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 15:00:48,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-17 15:00:48,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-17 15:00:48,520 INFO L87 Difference]: Start difference. First operand 3922 states and 4795 transitions. Second operand 5 states. [2020-07-17 15:00:52,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 15:00:52,292 INFO L93 Difference]: Finished difference Result 11041 states and 13536 transitions. [2020-07-17 15:00:52,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-17 15:00:52,293 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 409 [2020-07-17 15:00:52,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 15:00:52,324 INFO L225 Difference]: With dead ends: 11041 [2020-07-17 15:00:52,324 INFO L226 Difference]: Without dead ends: 7370 [2020-07-17 15:00:52,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 188 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-17 15:00:52,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7370 states. [2020-07-17 15:00:52,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7370 to 7368. [2020-07-17 15:00:52,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7368 states. [2020-07-17 15:00:52,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7368 states to 7368 states and 8968 transitions. [2020-07-17 15:00:52,940 INFO L78 Accepts]: Start accepts. Automaton has 7368 states and 8968 transitions. Word has length 409 [2020-07-17 15:00:52,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 15:00:52,940 INFO L479 AbstractCegarLoop]: Abstraction has 7368 states and 8968 transitions. [2020-07-17 15:00:52,941 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-17 15:00:52,941 INFO L276 IsEmpty]: Start isEmpty. Operand 7368 states and 8968 transitions. [2020-07-17 15:00:52,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2020-07-17 15:00:52,954 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 15:00:52,954 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 15:00:52,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-17 15:00:52,955 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 15:00:52,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 15:00:52,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1907351519, now seen corresponding path program 1 times [2020-07-17 15:00:52,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 15:00:52,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [821896442] [2020-07-17 15:00:52,956 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 15:00:53,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:53,279 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-07-17 15:00:53,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:53,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 15:00:53,492 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 15:00:53,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [821896442] [2020-07-17 15:00:53,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 15:00:53,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 15:00:53,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978511145] [2020-07-17 15:00:53,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 15:00:53,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 15:00:53,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 15:00:53,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 15:00:53,497 INFO L87 Difference]: Start difference. First operand 7368 states and 8968 transitions. Second operand 4 states. [2020-07-17 15:00:58,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 15:00:58,001 INFO L93 Difference]: Finished difference Result 21537 states and 26256 transitions. [2020-07-17 15:00:58,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 15:00:58,002 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 410 [2020-07-17 15:00:58,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 15:00:58,065 INFO L225 Difference]: With dead ends: 21537 [2020-07-17 15:00:58,066 INFO L226 Difference]: Without dead ends: 14470 [2020-07-17 15:00:58,083 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 242 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 15:00:58,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14470 states. [2020-07-17 15:00:58,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14470 to 7378. [2020-07-17 15:00:58,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7378 states. [2020-07-17 15:00:58,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7378 states to 7378 states and 8978 transitions. [2020-07-17 15:00:58,752 INFO L78 Accepts]: Start accepts. Automaton has 7378 states and 8978 transitions. Word has length 410 [2020-07-17 15:00:58,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 15:00:58,753 INFO L479 AbstractCegarLoop]: Abstraction has 7378 states and 8978 transitions. [2020-07-17 15:00:58,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 15:00:58,753 INFO L276 IsEmpty]: Start isEmpty. Operand 7378 states and 8978 transitions. [2020-07-17 15:00:58,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2020-07-17 15:00:58,767 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 15:00:58,767 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 15:00:58,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-17 15:00:58,767 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 15:00:58,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 15:00:58,768 INFO L82 PathProgramCache]: Analyzing trace with hash 663980441, now seen corresponding path program 1 times [2020-07-17 15:00:58,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 15:00:58,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [731259075] [2020-07-17 15:00:58,769 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 15:00:58,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:59,053 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-07-17 15:00:59,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:59,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 15:00:59,225 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 15:00:59,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [731259075] [2020-07-17 15:00:59,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 15:00:59,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 15:00:59,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70583381] [2020-07-17 15:00:59,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 15:00:59,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 15:00:59,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 15:00:59,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 15:00:59,228 INFO L87 Difference]: Start difference. First operand 7378 states and 8978 transitions. Second operand 4 states. [2020-07-17 15:01:03,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 15:01:03,804 INFO L93 Difference]: Finished difference Result 20111 states and 24532 transitions. [2020-07-17 15:01:03,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 15:01:03,805 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 411 [2020-07-17 15:01:03,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 15:01:03,838 INFO L225 Difference]: With dead ends: 20111 [2020-07-17 15:01:03,838 INFO L226 Difference]: Without dead ends: 14049 [2020-07-17 15:01:03,852 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 183 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 15:01:03,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14049 states. [2020-07-17 15:01:04,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14049 to 14047. [2020-07-17 15:01:04,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14047 states. [2020-07-17 15:01:04,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14047 states to 14047 states and 16994 transitions. [2020-07-17 15:01:04,977 INFO L78 Accepts]: Start accepts. Automaton has 14047 states and 16994 transitions. Word has length 411 [2020-07-17 15:01:04,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 15:01:04,978 INFO L479 AbstractCegarLoop]: Abstraction has 14047 states and 16994 transitions. [2020-07-17 15:01:04,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 15:01:04,978 INFO L276 IsEmpty]: Start isEmpty. Operand 14047 states and 16994 transitions. [2020-07-17 15:01:04,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2020-07-17 15:01:04,998 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 15:01:04,998 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 15:01:04,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-17 15:01:04,999 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 15:01:04,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 15:01:04,999 INFO L82 PathProgramCache]: Analyzing trace with hash 928410137, now seen corresponding path program 1 times [2020-07-17 15:01:05,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 15:01:05,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [557544798] [2020-07-17 15:01:05,000 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 15:01:05,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:05,299 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-07-17 15:01:05,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:05,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 15:01:05,460 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 15:01:05,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [557544798] [2020-07-17 15:01:05,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 15:01:05,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-17 15:01:05,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391265239] [2020-07-17 15:01:05,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-17 15:01:05,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 15:01:05,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-17 15:01:05,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-17 15:01:05,462 INFO L87 Difference]: Start difference. First operand 14047 states and 16994 transitions. Second operand 5 states. [2020-07-17 15:01:11,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 15:01:11,202 INFO L93 Difference]: Finished difference Result 39701 states and 48051 transitions. [2020-07-17 15:01:11,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-17 15:01:11,203 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 411 [2020-07-17 15:01:11,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 15:01:11,247 INFO L225 Difference]: With dead ends: 39701 [2020-07-17 15:01:11,247 INFO L226 Difference]: Without dead ends: 25931 [2020-07-17 15:01:11,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 187 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-17 15:01:11,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25931 states. [2020-07-17 15:01:13,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25931 to 25929. [2020-07-17 15:01:13,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25929 states. [2020-07-17 15:01:13,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25929 states to 25929 states and 31173 transitions. [2020-07-17 15:01:13,411 INFO L78 Accepts]: Start accepts. Automaton has 25929 states and 31173 transitions. Word has length 411 [2020-07-17 15:01:13,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 15:01:13,411 INFO L479 AbstractCegarLoop]: Abstraction has 25929 states and 31173 transitions. [2020-07-17 15:01:13,411 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-17 15:01:13,411 INFO L276 IsEmpty]: Start isEmpty. Operand 25929 states and 31173 transitions. [2020-07-17 15:01:13,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2020-07-17 15:01:13,444 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 15:01:13,444 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 15:01:13,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-17 15:01:13,445 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 15:01:13,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 15:01:13,445 INFO L82 PathProgramCache]: Analyzing trace with hash -1625460964, now seen corresponding path program 1 times [2020-07-17 15:01:13,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 15:01:13,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1806342580] [2020-07-17 15:01:13,446 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 15:01:13,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:13,754 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-07-17 15:01:13,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:13,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 15:01:13,944 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 15:01:13,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1806342580] [2020-07-17 15:01:13,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 15:01:13,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-17 15:01:13,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509053269] [2020-07-17 15:01:13,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-17 15:01:13,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 15:01:13,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-17 15:01:13,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-17 15:01:13,947 INFO L87 Difference]: Start difference. First operand 25929 states and 31173 transitions. Second operand 5 states. [2020-07-17 15:01:19,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 15:01:19,975 INFO L93 Difference]: Finished difference Result 52188 states and 62704 transitions. [2020-07-17 15:01:19,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-17 15:01:19,976 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 411 [2020-07-17 15:01:19,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 15:01:20,001 INFO L225 Difference]: With dead ends: 52188 [2020-07-17 15:01:20,002 INFO L226 Difference]: Without dead ends: 27013 [2020-07-17 15:01:20,049 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 183 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-17 15:01:20,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27013 states. [2020-07-17 15:01:22,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27013 to 26483. [2020-07-17 15:01:22,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26483 states. [2020-07-17 15:01:22,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26483 states to 26483 states and 31774 transitions. [2020-07-17 15:01:22,917 INFO L78 Accepts]: Start accepts. Automaton has 26483 states and 31774 transitions. Word has length 411 [2020-07-17 15:01:22,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 15:01:22,917 INFO L479 AbstractCegarLoop]: Abstraction has 26483 states and 31774 transitions. [2020-07-17 15:01:22,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-17 15:01:22,917 INFO L276 IsEmpty]: Start isEmpty. Operand 26483 states and 31774 transitions. [2020-07-17 15:01:22,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2020-07-17 15:01:22,940 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 15:01:22,940 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 15:01:22,941 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-17 15:01:22,941 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 15:01:22,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 15:01:22,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1241105107, now seen corresponding path program 1 times [2020-07-17 15:01:22,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 15:01:22,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [993799493] [2020-07-17 15:01:22,942 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 15:01:23,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:23,289 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-07-17 15:01:23,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:23,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 15:01:23,407 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 15:01:23,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [993799493] [2020-07-17 15:01:23,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 15:01:23,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 15:01:23,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291850485] [2020-07-17 15:01:23,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 15:01:23,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 15:01:23,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 15:01:23,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 15:01:23,410 INFO L87 Difference]: Start difference. First operand 26483 states and 31774 transitions. Second operand 4 states. [2020-07-17 15:01:31,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 15:01:31,364 INFO L93 Difference]: Finished difference Result 76419 states and 91852 transitions. [2020-07-17 15:01:31,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 15:01:31,365 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 412 [2020-07-17 15:01:31,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 15:01:31,419 INFO L225 Difference]: With dead ends: 76419 [2020-07-17 15:01:31,419 INFO L226 Difference]: Without dead ends: 52157 [2020-07-17 15:01:31,451 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 236 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 15:01:31,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52157 states. [2020-07-17 15:01:34,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52157 to 26523. [2020-07-17 15:01:34,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26523 states. [2020-07-17 15:01:34,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26523 states to 26523 states and 31814 transitions. [2020-07-17 15:01:34,259 INFO L78 Accepts]: Start accepts. Automaton has 26523 states and 31814 transitions. Word has length 412 [2020-07-17 15:01:34,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 15:01:34,259 INFO L479 AbstractCegarLoop]: Abstraction has 26523 states and 31814 transitions. [2020-07-17 15:01:34,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 15:01:34,259 INFO L276 IsEmpty]: Start isEmpty. Operand 26523 states and 31814 transitions. [2020-07-17 15:01:34,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2020-07-17 15:01:34,277 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 15:01:34,277 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 15:01:34,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-17 15:01:34,277 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 15:01:34,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 15:01:34,278 INFO L82 PathProgramCache]: Analyzing trace with hash -926381921, now seen corresponding path program 1 times [2020-07-17 15:01:34,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 15:01:34,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1887088651] [2020-07-17 15:01:34,278 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 15:01:34,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:34,619 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-07-17 15:01:34,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:35,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 15:01:35,625 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 15:01:35,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1887088651] [2020-07-17 15:01:35,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 15:01:35,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-17 15:01:35,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818123290] [2020-07-17 15:01:35,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-17 15:01:35,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 15:01:35,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-17 15:01:35,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-17 15:01:35,627 INFO L87 Difference]: Start difference. First operand 26523 states and 31814 transitions. Second operand 5 states. [2020-07-17 15:01:42,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 15:01:42,113 INFO L93 Difference]: Finished difference Result 54399 states and 65120 transitions. [2020-07-17 15:01:42,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-17 15:01:42,114 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 413 [2020-07-17 15:01:42,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 15:01:42,146 INFO L225 Difference]: With dead ends: 54399 [2020-07-17 15:01:42,147 INFO L226 Difference]: Without dead ends: 28497 [2020-07-17 15:01:42,171 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 182 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-17 15:01:42,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28497 states. [2020-07-17 15:01:44,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28497 to 27671. [2020-07-17 15:01:44,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27671 states. [2020-07-17 15:01:44,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27671 states to 27671 states and 33036 transitions. [2020-07-17 15:01:44,877 INFO L78 Accepts]: Start accepts. Automaton has 27671 states and 33036 transitions. Word has length 413 [2020-07-17 15:01:44,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 15:01:44,877 INFO L479 AbstractCegarLoop]: Abstraction has 27671 states and 33036 transitions. [2020-07-17 15:01:44,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-17 15:01:44,877 INFO L276 IsEmpty]: Start isEmpty. Operand 27671 states and 33036 transitions. [2020-07-17 15:01:44,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2020-07-17 15:01:44,894 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 15:01:44,894 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 15:01:44,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-17 15:01:44,894 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 15:01:44,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 15:01:44,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1894567110, now seen corresponding path program 1 times [2020-07-17 15:01:44,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 15:01:44,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1971052939] [2020-07-17 15:01:44,895 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 15:01:44,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 15:01:45,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 15:01:45,626 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 15:01:45,627 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-17 15:01:45,627 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-17 15:01:45,628 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-07-17 15:01:45,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 03:01:45 BoogieIcfgContainer [2020-07-17 15:01:45,677 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 15:01:45,678 INFO L168 Benchmark]: Toolchain (without parser) took 81663.15 ms. Allocated memory was 138.4 MB in the beginning and 2.9 GB in the end (delta: 2.8 GB). Free memory was 102.2 MB in the beginning and 1.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2020-07-17 15:01:45,679 INFO L168 Benchmark]: CDTParser took 0.85 ms. Allocated memory is still 138.4 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-17 15:01:45,680 INFO L168 Benchmark]: CACSL2BoogieTranslator took 825.83 ms. Allocated memory was 138.4 MB in the beginning and 203.4 MB in the end (delta: 65.0 MB). Free memory was 101.7 MB in the beginning and 169.5 MB in the end (delta: -67.8 MB). Peak memory consumption was 33.9 MB. Max. memory is 7.1 GB. [2020-07-17 15:01:45,680 INFO L168 Benchmark]: Boogie Preprocessor took 84.17 ms. Allocated memory is still 203.4 MB. Free memory was 169.5 MB in the beginning and 165.2 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. [2020-07-17 15:01:45,681 INFO L168 Benchmark]: RCFGBuilder took 1643.92 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 165.2 MB in the beginning and 130.6 MB in the end (delta: 34.6 MB). Peak memory consumption was 83.1 MB. Max. memory is 7.1 GB. [2020-07-17 15:01:45,682 INFO L168 Benchmark]: TraceAbstraction took 79103.36 ms. Allocated memory was 235.9 MB in the beginning and 2.9 GB in the end (delta: 2.7 GB). Free memory was 130.6 MB in the beginning and 1.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2020-07-17 15:01:45,685 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.85 ms. Allocated memory is still 138.4 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 825.83 ms. Allocated memory was 138.4 MB in the beginning and 203.4 MB in the end (delta: 65.0 MB). Free memory was 101.7 MB in the beginning and 169.5 MB in the end (delta: -67.8 MB). Peak memory consumption was 33.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 84.17 ms. Allocated memory is still 203.4 MB. Free memory was 169.5 MB in the beginning and 165.2 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1643.92 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 165.2 MB in the beginning and 130.6 MB in the end (delta: 34.6 MB). Peak memory consumption was 83.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 79103.36 ms. Allocated memory was 235.9 MB in the beginning and 2.9 GB in the end (delta: 2.7 GB). Free memory was 130.6 MB in the beginning and 1.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 832]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1] int __return_main; [L15] msg_t nomsg = (msg_t )-1; [L16] port_t p12 = 0; [L17] char p12_old = '\x0'; [L18] char p12_new = '\x0'; [L19] _Bool ep12 = 0; [L20] port_t p13 = 0; [L21] char p13_old = '\x0'; [L22] char p13_new = '\x0'; [L23] _Bool ep13 = 0; [L24] port_t p21 = 0; [L25] char p21_old = '\x0'; [L26] char p21_new = '\x0'; [L27] _Bool ep21 = 0; [L28] port_t p23 = 0; [L29] char p23_old = '\x0'; [L30] char p23_new = '\x0'; [L31] _Bool ep23 = 0; [L32] port_t p31 = 0; [L33] char p31_old = '\x0'; [L34] char p31_new = '\x0'; [L35] _Bool ep31 = 0; [L36] port_t p32 = 0; [L37] char p32_old = '\x0'; [L38] char p32_new = '\x0'; [L39] _Bool ep32 = 0; [L40] char id1 = '\x0'; [L41] unsigned char r1 = '\x0'; [L42] char st1 = '\x0'; [L43] char nl1 = '\x0'; [L44] char m1 = '\x0'; [L45] char max1 = '\x0'; [L46] _Bool mode1 = 0; [L47] char id2 = '\x0'; [L48] unsigned char r2 = '\x0'; [L49] char st2 = '\x0'; [L50] char nl2 = '\x0'; [L51] char m2 = '\x0'; [L52] char max2 = '\x0'; [L53] _Bool mode2 = 0; [L54] char id3 = '\x0'; [L55] unsigned char r3 = '\x0'; [L56] char st3 = '\x0'; [L57] char nl3 = '\x0'; [L58] char m3 = '\x0'; [L59] char max3 = '\x0'; [L60] _Bool mode3 = 0; [L64] void (*nodes[3])() = { &node1, &node2, &node3 }; [L68] int __return_1718; [L69] int __return_1846; [L70] int __return_1964; [L71] int __return_2082; [L72] int __return_2205; [L73] int __return_2315; [L76] int main__c1; [L77] int main__i2; [L78] main__c1 = 0 [L79] ep12 = __VERIFIER_nondet_bool() [L80] ep13 = __VERIFIER_nondet_bool() [L81] ep21 = __VERIFIER_nondet_bool() [L82] ep23 = __VERIFIER_nondet_bool() [L83] ep31 = __VERIFIER_nondet_bool() [L84] ep32 = __VERIFIER_nondet_bool() [L85] id1 = __VERIFIER_nondet_char() [L86] r1 = __VERIFIER_nondet_uchar() [L87] st1 = __VERIFIER_nondet_char() [L88] nl1 = __VERIFIER_nondet_char() [L89] m1 = __VERIFIER_nondet_char() [L90] max1 = __VERIFIER_nondet_char() [L91] mode1 = __VERIFIER_nondet_bool() [L92] id2 = __VERIFIER_nondet_char() [L93] r2 = __VERIFIER_nondet_uchar() [L94] st2 = __VERIFIER_nondet_char() [L95] nl2 = __VERIFIER_nondet_char() [L96] m2 = __VERIFIER_nondet_char() [L97] max2 = __VERIFIER_nondet_char() [L98] mode2 = __VERIFIER_nondet_bool() [L99] id3 = __VERIFIER_nondet_char() [L100] r3 = __VERIFIER_nondet_uchar() [L101] st3 = __VERIFIER_nondet_char() [L102] nl3 = __VERIFIER_nondet_char() [L103] m3 = __VERIFIER_nondet_char() [L104] max3 = __VERIFIER_nondet_char() [L105] mode3 = __VERIFIER_nondet_bool() [L107] _Bool init__r121; [L108] _Bool init__r131; [L109] _Bool init__r211; [L110] _Bool init__r231; [L111] _Bool init__r311; [L112] _Bool init__r321; [L113] _Bool init__r122; [L114] int init__tmp; [L115] _Bool init__r132; [L116] int init__tmp___0; [L117] _Bool init__r212; [L118] int init__tmp___1; [L119] _Bool init__r232; [L120] int init__tmp___2; [L121] _Bool init__r312; [L122] int init__tmp___3; [L123] _Bool init__r322; [L124] int init__tmp___4; [L125] int init__tmp___5; [L126] init__r121 = ep12 [L127] init__r131 = ep13 [L128] init__r211 = ep21 [L129] init__r231 = ep23 [L130] init__r311 = ep31 [L131] init__r321 = ep32 [L132] COND FALSE !(!(init__r121 == 0)) [L2244] COND FALSE !(!(init__r131 == 0)) [L2260] init__tmp = 0 [L136] init__r122 = (_Bool)init__tmp [L137] COND FALSE !(!(init__r131 == 0)) [L2221] COND FALSE !(!(init__r121 == 0)) [L2237] init__tmp___0 = 0 [L141] init__r132 = (_Bool)init__tmp___0 [L142] COND FALSE !(!(init__r211 == 0)) [L2198] COND FALSE !(!(init__r231 == 0)) [L2214] init__tmp___1 = 0 [L146] init__r212 = (_Bool)init__tmp___1 [L147] COND FALSE !(!(init__r231 == 0)) [L2175] COND FALSE !(!(init__r211 == 0)) [L2191] init__tmp___2 = 0 [L151] init__r232 = (_Bool)init__tmp___2 [L152] COND FALSE !(!(init__r311 == 0)) [L2152] COND FALSE !(!(init__r321 == 0)) [L2168] init__tmp___3 = 0 [L156] init__r312 = (_Bool)init__tmp___3 [L157] COND FALSE !(!(init__r321 == 0)) [L2129] COND FALSE !(!(init__r311 == 0)) [L2145] init__tmp___4 = 0 [L161] init__r322 = (_Bool)init__tmp___4 [L162] COND TRUE ((int)id1) != ((int)id2) [L164] COND TRUE ((int)id1) != ((int)id3) [L166] COND TRUE ((int)id2) != ((int)id3) [L168] COND TRUE ((int)id1) >= 0 [L170] COND TRUE ((int)id2) >= 0 [L172] COND TRUE ((int)id3) >= 0 [L174] COND TRUE ((int)r1) == 0 [L176] COND TRUE ((int)r2) == 0 [L178] COND TRUE ((int)r3) == 0 [L180] COND TRUE ((int)max1) == ((int)id1) [L182] COND TRUE ((int)max2) == ((int)id2) [L184] COND TRUE ((int)max3) == ((int)id3) [L186] COND TRUE ((int)st1) == 0 [L188] COND TRUE ((int)st2) == 0 [L190] COND TRUE ((int)st3) == 0 [L192] COND TRUE ((int)nl1) == 0 [L194] COND TRUE ((int)nl2) == 0 [L196] COND TRUE ((int)nl3) == 0 [L198] COND TRUE ((int)mode1) == 0 [L200] COND TRUE ((int)mode2) == 0 [L202] COND TRUE ((int)mode3) == 0 [L204] init__tmp___5 = 1 [L205] __return_1718 = init__tmp___5 [L206] main__i2 = __return_1718 [L207] COND TRUE main__i2 != 0 [L209] p12_old = nomsg [L210] p12_new = nomsg [L211] p13_old = nomsg [L212] p13_new = nomsg [L213] p21_old = nomsg [L214] p21_new = nomsg [L215] p23_old = nomsg [L216] p23_new = nomsg [L217] p31_old = nomsg [L218] p31_new = nomsg [L219] p32_old = nomsg [L220] p32_new = nomsg [L221] main__i2 = 0 [L223] COND FALSE !(!(mode1 == 0)) [L229] COND TRUE ((int)r1) < 2 [L231] COND FALSE !(!(ep12 == 0)) [L242] COND FALSE !(!(ep13 == 0)) [L253] mode1 = 1 [L255] COND FALSE !(!(mode2 == 0)) [L261] COND TRUE ((int)r2) < 2 [L263] COND FALSE !(!(ep21 == 0)) [L274] COND FALSE !(!(ep23 == 0)) [L285] mode2 = 1 [L287] COND FALSE !(!(mode3 == 0)) [L293] COND TRUE ((int)r3) < 2 [L295] COND FALSE !(!(ep31 == 0)) [L306] COND FALSE !(!(ep32 == 0)) [L317] mode3 = 1 [L318] p12_old = p12_new [L319] p12_new = nomsg [L320] p13_old = p13_new [L321] p13_new = nomsg [L322] p21_old = p21_new [L323] p21_new = nomsg [L324] p23_old = p23_new [L325] p23_new = nomsg [L326] p31_old = p31_new [L327] p31_new = nomsg [L328] p32_old = p32_new [L329] p32_new = nomsg [L331] int check__tmp; [L332] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L334] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L336] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L338] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L340] COND FALSE !(((int)r1) >= 2) [L346] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L348] COND TRUE ((int)r1) < 2 [L350] COND FALSE !(((int)r1) >= 2) [L356] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L358] COND TRUE ((int)r1) < 2 [L360] check__tmp = 1 [L361] __return_1846 = check__tmp [L362] main__c1 = __return_1846 [L364] _Bool __tmp_1; [L365] __tmp_1 = main__c1 [L366] _Bool assert__arg; [L367] assert__arg = __tmp_1 [L368] COND FALSE !(assert__arg == 0) [L375] COND TRUE !(mode1 == 0) [L377] COND FALSE !(r1 == 255) [L383] r1 = r1 + 1 [L384] COND FALSE !(!(ep21 == 0)) [L392] COND FALSE !(!(ep31 == 0)) [L400] COND FALSE !(((int)r1) == 2) [L406] mode1 = 0 [L408] COND TRUE !(mode2 == 0) [L410] COND FALSE !(r2 == 255) [L416] r2 = r2 + 1 [L417] COND FALSE !(!(ep12 == 0)) [L425] COND FALSE !(!(ep32 == 0)) [L433] COND FALSE !(((int)r2) == 2) [L439] mode2 = 0 [L441] COND TRUE !(mode3 == 0) [L443] COND FALSE !(r3 == 255) [L449] r3 = r3 + 1 [L450] COND FALSE !(!(ep13 == 0)) [L458] COND FALSE !(!(ep23 == 0)) [L466] COND FALSE !(((int)r3) == 2) [L472] mode3 = 0 [L473] p12_old = p12_new [L474] p12_new = nomsg [L475] p13_old = p13_new [L476] p13_new = nomsg [L477] p21_old = p21_new [L478] p21_new = nomsg [L479] p23_old = p23_new [L480] p23_new = nomsg [L481] p31_old = p31_new [L482] p31_new = nomsg [L483] p32_old = p32_new [L484] p32_new = nomsg [L486] int check__tmp; [L487] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L489] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L491] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L493] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L495] COND FALSE !(((int)r1) >= 2) [L501] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L503] COND TRUE ((int)r1) < 2 [L505] COND FALSE !(((int)r1) >= 2) [L511] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L513] COND TRUE ((int)r1) < 2 [L515] check__tmp = 1 [L516] __return_1964 = check__tmp [L517] main__c1 = __return_1964 [L519] _Bool __tmp_2; [L520] __tmp_2 = main__c1 [L521] _Bool assert__arg; [L522] assert__arg = __tmp_2 [L523] COND FALSE !(assert__arg == 0) [L530] COND FALSE !(!(mode1 == 0)) [L536] COND TRUE ((int)r1) < 2 [L538] COND FALSE !(!(ep12 == 0)) [L549] COND FALSE !(!(ep13 == 0)) [L560] mode1 = 1 [L562] COND FALSE !(!(mode2 == 0)) [L568] COND TRUE ((int)r2) < 2 [L570] COND FALSE !(!(ep21 == 0)) [L581] COND FALSE !(!(ep23 == 0)) [L592] mode2 = 1 [L594] COND FALSE !(!(mode3 == 0)) [L600] COND TRUE ((int)r3) < 2 [L602] COND FALSE !(!(ep31 == 0)) [L613] COND FALSE !(!(ep32 == 0)) [L624] mode3 = 1 [L625] p12_old = p12_new [L626] p12_new = nomsg [L627] p13_old = p13_new [L628] p13_new = nomsg [L629] p21_old = p21_new [L630] p21_new = nomsg [L631] p23_old = p23_new [L632] p23_new = nomsg [L633] p31_old = p31_new [L634] p31_new = nomsg [L635] p32_old = p32_new [L636] p32_new = nomsg [L638] int check__tmp; [L639] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L641] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L643] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L645] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L647] COND FALSE !(((int)r1) >= 2) [L653] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L655] COND TRUE ((int)r1) < 2 [L657] COND FALSE !(((int)r1) >= 2) [L663] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L665] COND TRUE ((int)r1) < 2 [L667] check__tmp = 1 [L668] __return_2082 = check__tmp [L669] main__c1 = __return_2082 [L671] _Bool __tmp_3; [L672] __tmp_3 = main__c1 [L673] _Bool assert__arg; [L674] assert__arg = __tmp_3 [L675] COND FALSE !(assert__arg == 0) [L682] COND TRUE !(mode1 == 0) [L684] COND FALSE !(r1 == 255) [L690] r1 = r1 + 1 [L691] COND FALSE !(!(ep21 == 0)) [L699] COND FALSE !(!(ep31 == 0)) [L707] COND TRUE ((int)r1) == 2 [L709] COND TRUE ((int)max1) == ((int)id1) [L711] st1 = 1 [L713] mode1 = 0 [L715] COND TRUE !(mode2 == 0) [L717] COND FALSE !(r2 == 255) [L723] r2 = r2 + 1 [L724] COND FALSE !(!(ep12 == 0)) [L732] COND FALSE !(!(ep32 == 0)) [L740] COND TRUE ((int)r2) == 2 [L742] COND TRUE ((int)max2) == ((int)id2) [L744] st2 = 1 [L746] mode2 = 0 [L748] COND TRUE !(mode3 == 0) [L750] COND FALSE !(r3 == 255) [L756] r3 = r3 + 1 [L757] COND FALSE !(!(ep13 == 0)) [L765] COND FALSE !(!(ep23 == 0)) [L773] COND TRUE ((int)r3) == 2 [L775] COND TRUE ((int)max3) == ((int)id3) [L777] st3 = 1 [L779] mode3 = 0 [L780] p12_old = p12_new [L781] p12_new = nomsg [L782] p13_old = p13_new [L783] p13_new = nomsg [L784] p21_old = p21_new [L785] p21_new = nomsg [L786] p23_old = p23_new [L787] p23_new = nomsg [L788] p31_old = p31_new [L789] p31_new = nomsg [L790] p32_old = p32_new [L791] p32_new = nomsg [L793] int check__tmp; [L794] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) <= 1) [L1433] check__tmp = 0 [L822] __return_2205 = check__tmp [L823] main__c1 = __return_2205 [L826] _Bool __tmp_4; [L827] __tmp_4 = main__c1 [L828] _Bool assert__arg; [L829] assert__arg = __tmp_4 [L830] COND TRUE assert__arg == 0 [L832] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 818 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 78.9s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 56.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 16035 SDtfs, 12055 SDslu, 9973 SDs, 0 SdLazy, 16465 SolverSat, 117 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 30.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2261 GetRequests, 2216 SyntacticMatches, 11 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27671occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 13.6s AutomataMinimizationTime, 11 MinimizatonAttempts, 35152 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...