/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 15:10:16,619 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 15:10:16,624 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 15:10:16,666 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 15:10:16,667 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 15:10:16,676 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 15:10:16,678 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 15:10:16,682 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 15:10:16,685 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 15:10:16,688 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 15:10:16,689 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 15:10:16,690 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 15:10:16,690 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 15:10:16,693 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 15:10:16,695 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 15:10:16,697 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 15:10:16,699 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 15:10:16,700 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 15:10:16,702 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 15:10:16,710 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 15:10:16,712 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 15:10:16,713 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 15:10:16,714 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 15:10:16,715 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 15:10:16,727 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-24 15:10:16,736 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 15:10:16,738 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 15:10:16,739 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 15:10:16,740 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 15:10:16,783 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 15:10:16,783 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 15:10:16,785 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 15:10:16,785 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 15:10:16,786 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 15:10:16,786 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 15:10:16,786 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 15:10:16,786 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 15:10:16,787 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 15:10:16,787 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 15:10:16,788 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 15:10:16,788 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 15:10:16,788 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 15:10:16,789 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 15:10:16,789 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 15:10:16,789 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 15:10:16,789 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 15:10:16,789 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 15:10:16,790 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 15:10:16,790 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 15:10:16,790 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 15:10:16,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 15:10:16,790 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 15:10:16,791 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 15:10:16,791 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 15:10:16,791 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 15:10:16,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 15:10:16,791 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 15:10:16,792 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 15:10:16,792 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-09-24 15:10:17,263 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 15:10:17,282 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 15:10:17,286 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 15:10:17,288 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 15:10:17,288 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 15:10:17,289 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-24 15:10:17,365 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e0d67841/47e5f2c2707f4783bd0f7f401395a76a/FLAGbf2307b7c [2020-09-24 15:10:18,072 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 15:10:18,073 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-24 15:10:18,088 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e0d67841/47e5f2c2707f4783bd0f7f401395a76a/FLAGbf2307b7c [2020-09-24 15:10:18,274 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e0d67841/47e5f2c2707f4783bd0f7f401395a76a [2020-09-24 15:10:18,287 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 15:10:18,294 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 15:10:18,296 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 15:10:18,296 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 15:10:18,300 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 15:10:18,302 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:10:18" (1/1) ... [2020-09-24 15:10:18,306 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17866592 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:10:18, skipping insertion in model container [2020-09-24 15:10:18,307 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:10:18" (1/1) ... [2020-09-24 15:10:18,316 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 15:10:18,389 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 15:10:19,046 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:10:19,064 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 15:10:19,311 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:10:19,339 INFO L208 MainTranslator]: Completed translation [2020-09-24 15:10:19,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:10:19 WrapperNode [2020-09-24 15:10:19,339 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 15:10:19,340 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 15:10:19,341 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 15:10:19,341 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 15:10:19,365 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:10:19" (1/1) ... [2020-09-24 15:10:19,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:10:19" (1/1) ... [2020-09-24 15:10:19,412 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:10:19" (1/1) ... [2020-09-24 15:10:19,413 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:10:19" (1/1) ... [2020-09-24 15:10:19,478 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:10:19" (1/1) ... [2020-09-24 15:10:19,506 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:10:19" (1/1) ... [2020-09-24 15:10:19,512 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:10:19" (1/1) ... [2020-09-24 15:10:19,526 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 15:10:19,527 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 15:10:19,527 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 15:10:19,527 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 15:10:19,528 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:10:19" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 15:10:19,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 15:10:19,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 15:10:19,626 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 15:10:19,626 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 15:10:19,627 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 15:10:19,627 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-24 15:10:19,627 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-09-24 15:10:19,628 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-24 15:10:19,628 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-24 15:10:19,628 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 15:10:19,629 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 15:10:19,629 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-24 15:10:19,630 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-24 15:10:19,630 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-24 15:10:19,630 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-24 15:10:19,631 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-24 15:10:19,631 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-24 15:10:19,631 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-24 15:10:19,631 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 15:10:19,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 15:10:19,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 15:10:21,639 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 15:10:21,639 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 15:10:21,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:10:21 BoogieIcfgContainer [2020-09-24 15:10:21,655 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 15:10:21,656 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 15:10:21,656 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 15:10:21,660 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 15:10:21,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 03:10:18" (1/3) ... [2020-09-24 15:10:21,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76a2be39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:10:21, skipping insertion in model container [2020-09-24 15:10:21,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:10:19" (2/3) ... [2020-09-24 15:10:21,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76a2be39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:10:21, skipping insertion in model container [2020-09-24 15:10:21,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:10:21" (3/3) ... [2020-09-24 15:10:21,665 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-24 15:10:21,677 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 15:10:21,690 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-09-24 15:10:21,713 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-24 15:10:21,752 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 15:10:21,753 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 15:10:21,753 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 15:10:21,753 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 15:10:21,753 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 15:10:21,753 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 15:10:21,754 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 15:10:21,754 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 15:10:21,797 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states. [2020-09-24 15:10:21,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2020-09-24 15:10:21,838 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:10:21,840 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, 1] [2020-09-24 15:10:21,841 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:10:21,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:10:21,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1272027086, now seen corresponding path program 1 times [2020-09-24 15:10:21,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:10:21,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1051692475] [2020-09-24 15:10:21,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:10:22,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:23,079 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 15:10:23,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:10:23,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:23,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:10:23,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1051692475] [2020-09-24 15:10:23,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:10:23,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 15:10:23,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527335473] [2020-09-24 15:10:23,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 15:10:23,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:10:23,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 15:10:23,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 15:10:23,543 INFO L87 Difference]: Start difference. First operand 1123 states. Second operand 4 states. [2020-09-24 15:10:28,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:10:28,030 INFO L93 Difference]: Finished difference Result 1830 states and 2374 transitions. [2020-09-24 15:10:28,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 15:10:28,033 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 414 [2020-09-24 15:10:28,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:10:28,073 INFO L225 Difference]: With dead ends: 1830 [2020-09-24 15:10:28,074 INFO L226 Difference]: Without dead ends: 1312 [2020-09-24 15:10:28,088 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 15:10:28,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1312 states. [2020-09-24 15:10:28,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1312 to 1303. [2020-09-24 15:10:28,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1303 states. [2020-09-24 15:10:28,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1303 states to 1303 states and 1563 transitions. [2020-09-24 15:10:28,229 INFO L78 Accepts]: Start accepts. Automaton has 1303 states and 1563 transitions. Word has length 414 [2020-09-24 15:10:28,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:10:28,231 INFO L479 AbstractCegarLoop]: Abstraction has 1303 states and 1563 transitions. [2020-09-24 15:10:28,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 15:10:28,232 INFO L276 IsEmpty]: Start isEmpty. Operand 1303 states and 1563 transitions. [2020-09-24 15:10:28,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2020-09-24 15:10:28,242 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:10:28,243 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, 1] [2020-09-24 15:10:28,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 15:10:28,243 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:10:28,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:10:28,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1791071559, now seen corresponding path program 1 times [2020-09-24 15:10:28,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:10:28,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [404922590] [2020-09-24 15:10:28,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:10:28,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:28,811 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 15:10:28,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:10:28,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:29,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:10:29,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [404922590] [2020-09-24 15:10:29,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:10:29,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 15:10:29,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719600811] [2020-09-24 15:10:29,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 15:10:29,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:10:29,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 15:10:29,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 15:10:29,060 INFO L87 Difference]: Start difference. First operand 1303 states and 1563 transitions. Second operand 5 states. [2020-09-24 15:10:35,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:10:35,115 INFO L93 Difference]: Finished difference Result 3495 states and 4246 transitions. [2020-09-24 15:10:35,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 15:10:35,116 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 414 [2020-09-24 15:10:35,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:10:35,136 INFO L225 Difference]: With dead ends: 3495 [2020-09-24 15:10:35,136 INFO L226 Difference]: Without dead ends: 2370 [2020-09-24 15:10:35,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 15:10:35,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2370 states. [2020-09-24 15:10:35,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2370 to 2245. [2020-09-24 15:10:35,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2245 states. [2020-09-24 15:10:35,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2245 states to 2245 states and 2728 transitions. [2020-09-24 15:10:35,253 INFO L78 Accepts]: Start accepts. Automaton has 2245 states and 2728 transitions. Word has length 414 [2020-09-24 15:10:35,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:10:35,256 INFO L479 AbstractCegarLoop]: Abstraction has 2245 states and 2728 transitions. [2020-09-24 15:10:35,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 15:10:35,256 INFO L276 IsEmpty]: Start isEmpty. Operand 2245 states and 2728 transitions. [2020-09-24 15:10:35,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2020-09-24 15:10:35,262 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:10:35,262 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, 1, 1] [2020-09-24 15:10:35,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 15:10:35,263 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:10:35,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:10:35,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1512250717, now seen corresponding path program 1 times [2020-09-24 15:10:35,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:10:35,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1385789670] [2020-09-24 15:10:35,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:10:35,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:35,695 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 15:10:35,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:10:35,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:35,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:10:35,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1385789670] [2020-09-24 15:10:35,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:10:35,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 15:10:35,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026700838] [2020-09-24 15:10:35,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 15:10:35,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:10:35,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 15:10:35,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 15:10:35,850 INFO L87 Difference]: Start difference. First operand 2245 states and 2728 transitions. Second operand 4 states. [2020-09-24 15:10:39,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:10:39,742 INFO L93 Difference]: Finished difference Result 6342 states and 7767 transitions. [2020-09-24 15:10:39,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 15:10:39,746 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 415 [2020-09-24 15:10:39,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:10:39,767 INFO L225 Difference]: With dead ends: 6342 [2020-09-24 15:10:39,767 INFO L226 Difference]: Without dead ends: 4309 [2020-09-24 15:10:39,772 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 15:10:39,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4309 states. [2020-09-24 15:10:39,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4309 to 2247. [2020-09-24 15:10:39,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2247 states. [2020-09-24 15:10:39,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2247 states to 2247 states and 2730 transitions. [2020-09-24 15:10:39,870 INFO L78 Accepts]: Start accepts. Automaton has 2247 states and 2730 transitions. Word has length 415 [2020-09-24 15:10:39,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:10:39,871 INFO L479 AbstractCegarLoop]: Abstraction has 2247 states and 2730 transitions. [2020-09-24 15:10:39,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 15:10:39,871 INFO L276 IsEmpty]: Start isEmpty. Operand 2247 states and 2730 transitions. [2020-09-24 15:10:39,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2020-09-24 15:10:39,876 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:10:39,877 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, 1, 1, 1] [2020-09-24 15:10:39,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 15:10:39,877 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:10:39,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:10:39,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1261271917, now seen corresponding path program 1 times [2020-09-24 15:10:39,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:10:39,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [455703536] [2020-09-24 15:10:39,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:10:40,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:40,460 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 15:10:40,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:10:40,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:40,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:10:40,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [455703536] [2020-09-24 15:10:40,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:10:40,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 15:10:40,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765719309] [2020-09-24 15:10:40,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 15:10:40,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:10:40,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 15:10:40,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 15:10:40,644 INFO L87 Difference]: Start difference. First operand 2247 states and 2730 transitions. Second operand 5 states. [2020-09-24 15:10:46,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:10:46,428 INFO L93 Difference]: Finished difference Result 6213 states and 7598 transitions. [2020-09-24 15:10:46,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 15:10:46,429 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 416 [2020-09-24 15:10:46,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:10:46,449 INFO L225 Difference]: With dead ends: 6213 [2020-09-24 15:10:46,449 INFO L226 Difference]: Without dead ends: 4181 [2020-09-24 15:10:46,454 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 15:10:46,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4181 states. [2020-09-24 15:10:46,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4181 to 4056. [2020-09-24 15:10:46,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4056 states. [2020-09-24 15:10:46,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4056 states to 4056 states and 4953 transitions. [2020-09-24 15:10:46,586 INFO L78 Accepts]: Start accepts. Automaton has 4056 states and 4953 transitions. Word has length 416 [2020-09-24 15:10:46,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:10:46,587 INFO L479 AbstractCegarLoop]: Abstraction has 4056 states and 4953 transitions. [2020-09-24 15:10:46,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 15:10:46,587 INFO L276 IsEmpty]: Start isEmpty. Operand 4056 states and 4953 transitions. [2020-09-24 15:10:46,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2020-09-24 15:10:46,595 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:10:46,596 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, 1, 1, 1, 1] [2020-09-24 15:10:46,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 15:10:46,596 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:10:46,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:10:46,597 INFO L82 PathProgramCache]: Analyzing trace with hash 263200131, now seen corresponding path program 1 times [2020-09-24 15:10:46,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:10:46,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [777140372] [2020-09-24 15:10:46,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:10:46,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:47,004 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 15:10:47,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:10:47,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:47,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:10:47,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [777140372] [2020-09-24 15:10:47,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:10:47,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 15:10:47,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849680335] [2020-09-24 15:10:47,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 15:10:47,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:10:47,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 15:10:47,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 15:10:47,154 INFO L87 Difference]: Start difference. First operand 4056 states and 4953 transitions. Second operand 4 states. [2020-09-24 15:10:51,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:10:51,100 INFO L93 Difference]: Finished difference Result 11712 states and 14359 transitions. [2020-09-24 15:10:51,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 15:10:51,102 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 417 [2020-09-24 15:10:51,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:10:51,136 INFO L225 Difference]: With dead ends: 11712 [2020-09-24 15:10:51,137 INFO L226 Difference]: Without dead ends: 7891 [2020-09-24 15:10:51,146 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 15:10:51,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7891 states. [2020-09-24 15:10:51,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7891 to 4060. [2020-09-24 15:10:51,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4060 states. [2020-09-24 15:10:51,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4060 states to 4060 states and 4957 transitions. [2020-09-24 15:10:51,306 INFO L78 Accepts]: Start accepts. Automaton has 4060 states and 4957 transitions. Word has length 417 [2020-09-24 15:10:51,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:10:51,307 INFO L479 AbstractCegarLoop]: Abstraction has 4060 states and 4957 transitions. [2020-09-24 15:10:51,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 15:10:51,307 INFO L276 IsEmpty]: Start isEmpty. Operand 4060 states and 4957 transitions. [2020-09-24 15:10:51,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2020-09-24 15:10:51,318 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:10:51,319 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, 1, 1, 1, 1, 1] [2020-09-24 15:10:51,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 15:10:51,320 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:10:51,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:10:51,320 INFO L82 PathProgramCache]: Analyzing trace with hash 916031609, now seen corresponding path program 1 times [2020-09-24 15:10:51,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:10:51,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1105884208] [2020-09-24 15:10:51,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:10:51,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:51,918 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 15:10:51,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:10:51,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:52,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:10:52,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1105884208] [2020-09-24 15:10:52,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:10:52,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 15:10:52,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079908312] [2020-09-24 15:10:52,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 15:10:52,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:10:52,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 15:10:52,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 15:10:52,113 INFO L87 Difference]: Start difference. First operand 4060 states and 4957 transitions. Second operand 5 states. [2020-09-24 15:10:57,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:10:57,893 INFO L93 Difference]: Finished difference Result 11494 states and 14077 transitions. [2020-09-24 15:10:57,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 15:10:57,894 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 418 [2020-09-24 15:10:57,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:10:57,921 INFO L225 Difference]: With dead ends: 11494 [2020-09-24 15:10:57,922 INFO L226 Difference]: Without dead ends: 7675 [2020-09-24 15:10:57,931 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 15:10:57,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7675 states. [2020-09-24 15:10:58,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7675 to 7550. [2020-09-24 15:10:58,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7550 states. [2020-09-24 15:10:58,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7550 states to 7550 states and 9213 transitions. [2020-09-24 15:10:58,201 INFO L78 Accepts]: Start accepts. Automaton has 7550 states and 9213 transitions. Word has length 418 [2020-09-24 15:10:58,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:10:58,201 INFO L479 AbstractCegarLoop]: Abstraction has 7550 states and 9213 transitions. [2020-09-24 15:10:58,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 15:10:58,202 INFO L276 IsEmpty]: Start isEmpty. Operand 7550 states and 9213 transitions. [2020-09-24 15:10:58,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2020-09-24 15:10:58,214 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:10:58,215 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, 1, 1, 1, 1, 1, 1] [2020-09-24 15:10:58,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 15:10:58,215 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:10:58,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:10:58,216 INFO L82 PathProgramCache]: Analyzing trace with hash 890115339, now seen corresponding path program 1 times [2020-09-24 15:10:58,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:10:58,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [241080969] [2020-09-24 15:10:58,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:10:58,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:58,575 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 15:10:58,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:10:58,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:58,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:10:58,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [241080969] [2020-09-24 15:10:58,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:10:58,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 15:10:58,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861113411] [2020-09-24 15:10:58,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 15:10:58,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:10:58,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 15:10:58,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 15:10:58,710 INFO L87 Difference]: Start difference. First operand 7550 states and 9213 transitions. Second operand 4 states. [2020-09-24 15:11:02,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:11:02,906 INFO L93 Difference]: Finished difference Result 21732 states and 26587 transitions. [2020-09-24 15:11:02,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 15:11:02,907 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 419 [2020-09-24 15:11:02,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:11:02,937 INFO L225 Difference]: With dead ends: 21732 [2020-09-24 15:11:02,938 INFO L226 Difference]: Without dead ends: 14783 [2020-09-24 15:11:02,953 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 15:11:02,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14783 states. [2020-09-24 15:11:03,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14783 to 7558. [2020-09-24 15:11:03,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7558 states. [2020-09-24 15:11:03,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7558 states to 7558 states and 9221 transitions. [2020-09-24 15:11:03,234 INFO L78 Accepts]: Start accepts. Automaton has 7558 states and 9221 transitions. Word has length 419 [2020-09-24 15:11:03,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:11:03,235 INFO L479 AbstractCegarLoop]: Abstraction has 7558 states and 9221 transitions. [2020-09-24 15:11:03,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 15:11:03,235 INFO L276 IsEmpty]: Start isEmpty. Operand 7558 states and 9221 transitions. [2020-09-24 15:11:03,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2020-09-24 15:11:03,248 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:11:03,248 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, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:11:03,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 15:11:03,249 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:11:03,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:11:03,249 INFO L82 PathProgramCache]: Analyzing trace with hash -759078947, now seen corresponding path program 1 times [2020-09-24 15:11:03,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:11:03,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1048488089] [2020-09-24 15:11:03,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:11:03,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 15:11:03,469 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 15:11:03,470 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 15:11:03,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 15:11:03,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 03:11:03 BoogieIcfgContainer [2020-09-24 15:11:03,561 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 15:11:03,570 INFO L168 Benchmark]: Toolchain (without parser) took 45275.26 ms. Allocated memory was 148.9 MB in the beginning and 815.3 MB in the end (delta: 666.4 MB). Free memory was 103.3 MB in the beginning and 698.0 MB in the end (delta: -594.8 MB). Peak memory consumption was 689.4 MB. Max. memory is 7.1 GB. [2020-09-24 15:11:03,571 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 148.9 MB. Free memory was 123.4 MB in the beginning and 123.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 15:11:03,573 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1044.48 ms. Allocated memory was 148.9 MB in the beginning and 205.5 MB in the end (delta: 56.6 MB). Free memory was 102.6 MB in the beginning and 163.6 MB in the end (delta: -61.0 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2020-09-24 15:11:03,574 INFO L168 Benchmark]: Boogie Preprocessor took 185.89 ms. Allocated memory is still 205.5 MB. Free memory was 163.6 MB in the beginning and 158.8 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. [2020-09-24 15:11:03,574 INFO L168 Benchmark]: RCFGBuilder took 2128.25 ms. Allocated memory was 205.5 MB in the beginning and 246.4 MB in the end (delta: 40.9 MB). Free memory was 158.8 MB in the beginning and 197.4 MB in the end (delta: -38.6 MB). Peak memory consumption was 104.0 MB. Max. memory is 7.1 GB. [2020-09-24 15:11:03,578 INFO L168 Benchmark]: TraceAbstraction took 41905.32 ms. Allocated memory was 246.4 MB in the beginning and 815.3 MB in the end (delta: 568.9 MB). Free memory was 195.6 MB in the beginning and 698.0 MB in the end (delta: -502.4 MB). Peak memory consumption was 684.3 MB. Max. memory is 7.1 GB. [2020-09-24 15:11:03,590 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 148.9 MB. Free memory was 123.4 MB in the beginning and 123.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1044.48 ms. Allocated memory was 148.9 MB in the beginning and 205.5 MB in the end (delta: 56.6 MB). Free memory was 102.6 MB in the beginning and 163.6 MB in the end (delta: -61.0 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 185.89 ms. Allocated memory is still 205.5 MB. Free memory was 163.6 MB in the beginning and 158.8 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 2128.25 ms. Allocated memory was 205.5 MB in the beginning and 246.4 MB in the end (delta: 40.9 MB). Free memory was 158.8 MB in the beginning and 197.4 MB in the end (delta: -38.6 MB). Peak memory consumption was 104.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 41905.32 ms. Allocated memory was 246.4 MB in the beginning and 815.3 MB in the end (delta: 568.9 MB). Free memory was 195.6 MB in the beginning and 698.0 MB in the end (delta: -502.4 MB). Peak memory consumption was 684.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 814]: 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_2816; [L73] int __return_2785; [L74] int __return_2726; [L75] int __return_2692; [L76] int __return_2315; [L77] int __return_2587; [L78] int __return_2553; [L79] int __return_2473; [L80] int __return_2205; [L83] int main__c1; [L84] int main__i2; [L85] main__c1 = 0 [L86] ep12 = __VERIFIER_nondet_bool() [L87] ep13 = __VERIFIER_nondet_bool() [L88] ep21 = __VERIFIER_nondet_bool() [L89] ep23 = __VERIFIER_nondet_bool() [L90] ep31 = __VERIFIER_nondet_bool() [L91] ep32 = __VERIFIER_nondet_bool() [L92] id1 = __VERIFIER_nondet_char() [L93] r1 = __VERIFIER_nondet_uchar() [L94] st1 = __VERIFIER_nondet_char() [L95] nl1 = __VERIFIER_nondet_char() [L96] m1 = __VERIFIER_nondet_char() [L97] max1 = __VERIFIER_nondet_char() [L98] mode1 = __VERIFIER_nondet_bool() [L99] id2 = __VERIFIER_nondet_char() [L100] r2 = __VERIFIER_nondet_uchar() [L101] st2 = __VERIFIER_nondet_char() [L102] nl2 = __VERIFIER_nondet_char() [L103] m2 = __VERIFIER_nondet_char() [L104] max2 = __VERIFIER_nondet_char() [L105] mode2 = __VERIFIER_nondet_bool() [L106] id3 = __VERIFIER_nondet_char() [L107] r3 = __VERIFIER_nondet_uchar() [L108] st3 = __VERIFIER_nondet_char() [L109] nl3 = __VERIFIER_nondet_char() [L110] m3 = __VERIFIER_nondet_char() [L111] max3 = __VERIFIER_nondet_char() [L112] mode3 = __VERIFIER_nondet_bool() [L114] _Bool init__r121; [L115] _Bool init__r131; [L116] _Bool init__r211; [L117] _Bool init__r231; [L118] _Bool init__r311; [L119] _Bool init__r321; [L120] _Bool init__r122; [L121] int init__tmp; [L122] _Bool init__r132; [L123] int init__tmp___0; [L124] _Bool init__r212; [L125] int init__tmp___1; [L126] _Bool init__r232; [L127] int init__tmp___2; [L128] _Bool init__r312; [L129] int init__tmp___3; [L130] _Bool init__r322; [L131] int init__tmp___4; [L132] int init__tmp___5; [L133] init__r121 = ep12 [L134] init__r131 = ep13 [L135] init__r211 = ep21 [L136] init__r231 = ep23 [L137] init__r311 = ep31 [L138] init__r321 = ep32 [L139] COND FALSE !(!(init__r121 == 0)) [L2956] COND FALSE !(!(init__r131 == 0)) [L2972] init__tmp = 0 [L143] init__r122 = (_Bool)init__tmp [L144] COND FALSE !(!(init__r131 == 0)) [L2933] COND FALSE !(!(init__r121 == 0)) [L2949] init__tmp___0 = 0 [L148] init__r132 = (_Bool)init__tmp___0 [L149] COND FALSE !(!(init__r211 == 0)) [L2910] COND FALSE !(!(init__r231 == 0)) [L2926] init__tmp___1 = 0 [L153] init__r212 = (_Bool)init__tmp___1 [L154] COND FALSE !(!(init__r231 == 0)) [L2887] COND FALSE !(!(init__r211 == 0)) [L2903] init__tmp___2 = 0 [L158] init__r232 = (_Bool)init__tmp___2 [L159] COND FALSE !(!(init__r311 == 0)) [L2864] COND FALSE !(!(init__r321 == 0)) [L2880] init__tmp___3 = 0 [L163] init__r312 = (_Bool)init__tmp___3 [L164] COND FALSE !(!(init__r321 == 0)) [L2841] COND FALSE !(!(init__r311 == 0)) [L2857] init__tmp___4 = 0 [L168] init__r322 = (_Bool)init__tmp___4 [L169] COND TRUE ((int)id1) != ((int)id2) [L171] COND TRUE ((int)id1) != ((int)id3) [L173] COND TRUE ((int)id2) != ((int)id3) [L175] COND TRUE ((int)id1) >= 0 [L177] COND TRUE ((int)id2) >= 0 [L179] COND TRUE ((int)id3) >= 0 [L181] COND TRUE ((int)r1) == 0 [L183] COND TRUE ((int)r2) == 0 [L185] COND TRUE ((int)r3) == 0 [L187] COND TRUE ((int)max1) == ((int)id1) [L189] COND TRUE ((int)max2) == ((int)id2) [L191] COND TRUE ((int)max3) == ((int)id3) [L193] COND TRUE ((int)st1) == 0 [L195] COND TRUE ((int)st2) == 0 [L197] COND TRUE ((int)st3) == 0 [L199] COND TRUE ((int)nl1) == 0 [L201] COND TRUE ((int)nl2) == 0 [L203] COND TRUE ((int)nl3) == 0 [L205] COND TRUE ((int)mode1) == 0 [L207] COND TRUE ((int)mode2) == 0 [L209] COND TRUE ((int)mode3) == 0 [L211] init__tmp___5 = 1 [L212] __return_1718 = init__tmp___5 [L213] main__i2 = __return_1718 [L214] COND TRUE main__i2 != 0 [L216] p12_old = nomsg [L217] p12_new = nomsg [L218] p13_old = nomsg [L219] p13_new = nomsg [L220] p21_old = nomsg [L221] p21_new = nomsg [L222] p23_old = nomsg [L223] p23_new = nomsg [L224] p31_old = nomsg [L225] p31_new = nomsg [L226] p32_old = nomsg [L227] p32_new = nomsg [L228] main__i2 = 0 [L230] COND FALSE !(!(mode1 == 0)) [L236] COND TRUE ((int)r1) < 2 [L238] COND FALSE !(!(ep12 == 0)) [L249] COND FALSE !(!(ep13 == 0)) [L260] mode1 = 1 [L262] COND FALSE !(!(mode2 == 0)) [L268] COND TRUE ((int)r2) < 2 [L270] COND FALSE !(!(ep21 == 0)) [L281] COND FALSE !(!(ep23 == 0)) [L292] mode2 = 1 [L294] COND FALSE !(!(mode3 == 0)) [L300] COND TRUE ((int)r3) < 2 [L302] COND FALSE !(!(ep31 == 0)) [L313] COND FALSE !(!(ep32 == 0)) [L324] mode3 = 1 [L325] p12_old = p12_new [L326] p12_new = nomsg [L327] p13_old = p13_new [L328] p13_new = nomsg [L329] p21_old = p21_new [L330] p21_new = nomsg [L331] p23_old = p23_new [L332] p23_new = nomsg [L333] p31_old = p31_new [L334] p31_new = nomsg [L335] p32_old = p32_new [L336] p32_new = nomsg [L338] int check__tmp; [L339] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L341] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L343] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L345] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L347] COND FALSE !(((int)r1) >= 2) [L353] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L355] COND TRUE ((int)r1) < 2 [L357] COND FALSE !(((int)r1) >= 2) [L363] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L365] COND TRUE ((int)r1) < 2 [L367] check__tmp = 1 [L368] __return_1846 = check__tmp [L369] main__c1 = __return_1846 [L371] _Bool __tmp_1; [L372] __tmp_1 = main__c1 [L373] _Bool assert__arg; [L374] assert__arg = __tmp_1 [L375] COND FALSE !(assert__arg == 0) [L382] COND TRUE !(mode1 == 0) [L384] COND FALSE !(r1 == 255) [L390] r1 = r1 + 1 [L391] COND FALSE !(!(ep21 == 0)) [L399] COND FALSE !(!(ep31 == 0)) [L407] COND FALSE !(((int)r1) == 2) [L413] mode1 = 0 [L415] COND TRUE !(mode2 == 0) [L417] COND FALSE !(r2 == 255) [L423] r2 = r2 + 1 [L424] COND FALSE !(!(ep12 == 0)) [L432] COND FALSE !(!(ep32 == 0)) [L440] COND FALSE !(((int)r2) == 2) [L446] mode2 = 0 [L448] COND TRUE !(mode3 == 0) [L450] COND FALSE !(r3 == 255) [L456] r3 = r3 + 1 [L457] COND FALSE !(!(ep13 == 0)) [L465] COND FALSE !(!(ep23 == 0)) [L473] COND FALSE !(((int)r3) == 2) [L479] mode3 = 0 [L480] p12_old = p12_new [L481] p12_new = nomsg [L482] p13_old = p13_new [L483] p13_new = nomsg [L484] p21_old = p21_new [L485] p21_new = nomsg [L486] p23_old = p23_new [L487] p23_new = nomsg [L488] p31_old = p31_new [L489] p31_new = nomsg [L490] p32_old = p32_new [L491] p32_new = nomsg [L493] int check__tmp; [L494] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L496] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L498] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L500] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L502] COND FALSE !(((int)r1) >= 2) [L508] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L510] COND TRUE ((int)r1) < 2 [L512] COND FALSE !(((int)r1) >= 2) [L518] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L520] COND TRUE ((int)r1) < 2 [L522] check__tmp = 1 [L523] __return_1964 = check__tmp [L524] main__c1 = __return_1964 [L526] _Bool __tmp_2; [L527] __tmp_2 = main__c1 [L528] _Bool assert__arg; [L529] assert__arg = __tmp_2 [L530] COND FALSE !(assert__arg == 0) [L537] COND FALSE !(!(mode1 == 0)) [L543] COND TRUE ((int)r1) < 2 [L545] COND FALSE !(!(ep12 == 0)) [L556] COND FALSE !(!(ep13 == 0)) [L567] mode1 = 1 [L569] COND FALSE !(!(mode2 == 0)) [L575] COND TRUE ((int)r2) < 2 [L577] COND FALSE !(!(ep21 == 0)) [L588] COND FALSE !(!(ep23 == 0)) [L599] mode2 = 1 [L601] COND FALSE !(!(mode3 == 0)) [L607] COND TRUE ((int)r3) < 2 [L609] COND FALSE !(!(ep31 == 0)) [L620] COND FALSE !(!(ep32 == 0)) [L631] mode3 = 1 [L632] p12_old = p12_new [L633] p12_new = nomsg [L634] p13_old = p13_new [L635] p13_new = nomsg [L636] p21_old = p21_new [L637] p21_new = nomsg [L638] p23_old = p23_new [L639] p23_new = nomsg [L640] p31_old = p31_new [L641] p31_new = nomsg [L642] p32_old = p32_new [L643] p32_new = nomsg [L645] int check__tmp; [L646] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L648] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L650] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L652] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L654] COND FALSE !(((int)r1) >= 2) [L660] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L662] COND TRUE ((int)r1) < 2 [L664] COND FALSE !(((int)r1) >= 2) [L670] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L672] COND TRUE ((int)r1) < 2 [L674] check__tmp = 1 [L675] __return_2082 = check__tmp [L676] main__c1 = __return_2082 [L678] _Bool __tmp_3; [L679] __tmp_3 = main__c1 [L680] _Bool assert__arg; [L681] assert__arg = __tmp_3 [L682] COND FALSE !(assert__arg == 0) [L689] COND TRUE !(mode1 == 0) [L691] COND FALSE !(r1 == 255) [L697] r1 = r1 + 1 [L698] COND FALSE !(!(ep21 == 0)) [L706] COND FALSE !(!(ep31 == 0)) [L714] COND TRUE ((int)r1) == 2 [L716] COND TRUE ((int)max1) == ((int)id1) [L718] st1 = 1 [L719] mode1 = 0 [L721] COND TRUE !(mode2 == 0) [L723] COND FALSE !(r2 == 255) [L729] r2 = r2 + 1 [L730] COND FALSE !(!(ep12 == 0)) [L738] COND FALSE !(!(ep32 == 0)) [L746] COND TRUE ((int)r2) == 2 [L748] COND TRUE ((int)max2) == ((int)id2) [L750] st2 = 1 [L751] mode2 = 0 [L753] COND TRUE !(mode3 == 0) [L755] COND FALSE !(r3 == 255) [L761] r3 = r3 + 1 [L762] COND FALSE !(!(ep13 == 0)) [L770] COND FALSE !(!(ep23 == 0)) [L778] COND TRUE ((int)r3) == 2 [L780] COND TRUE ((int)max3) == ((int)id3) [L782] st3 = 1 [L783] mode3 = 0 [L784] p12_old = p12_new [L785] p12_new = nomsg [L786] p13_old = p13_new [L787] p13_new = nomsg [L788] p21_old = p21_new [L789] p21_new = nomsg [L790] p23_old = p23_new [L791] p23_new = nomsg [L792] p31_old = p31_new [L793] p31_new = nomsg [L794] p32_old = p32_new [L795] p32_new = nomsg [L797] int check__tmp; [L798] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) <= 1) [L804] check__tmp = 0 [L805] __return_2816 = check__tmp [L806] main__c1 = __return_2816 [L808] _Bool __tmp_4; [L809] __tmp_4 = main__c1 [L810] _Bool assert__arg; [L811] assert__arg = __tmp_4 [L812] COND TRUE assert__arg == 0 [L814] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 1128 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 41.7s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 34.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10906 SDtfs, 9444 SDslu, 8034 SDs, 0 SdLazy, 11224 SolverSat, 62 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 27.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7558occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 13502 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 3333 NumberOfCodeBlocks, 3333 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 2906 ConstructedInterpolants, 0 QuantifiedInterpolants, 2521486 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, 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...