/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 06:09:51,553 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 06:09:51,557 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 06:09:51,599 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 06:09:51,600 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 06:09:51,612 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 06:09:51,616 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 06:09:51,618 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 06:09:51,621 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 06:09:51,622 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 06:09:51,623 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 06:09:51,626 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 06:09:51,626 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 06:09:51,627 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 06:09:51,629 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 06:09:51,632 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 06:09:51,634 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 06:09:51,636 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 06:09:51,637 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 06:09:51,644 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 06:09:51,647 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 06:09:51,649 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 06:09:51,651 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 06:09:51,651 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 06:09:51,656 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 06:09:51,656 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 06:09:51,657 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 06:09:51,660 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 06:09:51,660 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 06:09:51,661 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 06:09:51,661 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 06:09:51,663 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 06:09:51,663 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 06:09:51,664 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 06:09:51,665 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 06:09:51,665 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 06:09:51,666 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 06:09:51,666 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 06:09:51,667 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 06:09:51,667 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 06:09:51,669 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 06:09:51,670 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 06:09:51,691 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 06:09:51,692 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 06:09:51,693 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 06:09:51,693 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 06:09:51,694 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 06:09:51,694 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 06:09:51,694 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 06:09:51,694 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 06:09:51,694 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 06:09:51,695 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 06:09:51,695 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 06:09:51,695 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 06:09:51,695 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 06:09:51,696 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 06:09:51,696 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 06:09:51,696 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 06:09:51,696 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 06:09:51,696 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 06:09:51,697 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 06:09:51,697 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 06:09:51,697 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 06:09:51,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 06:09:51,697 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 06:09:51,698 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 06:09:51,698 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 06:09:51,698 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 06:09:51,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 06:09:51,698 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 06:09:51,699 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 06:09:51,699 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; [2020-08-19 06:09:51,990 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 06:09:52,004 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 06:09:52,007 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 06:09:52,009 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 06:09:52,010 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 06:09:52,010 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-08-19 06:09:52,075 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79d4e9938/abfc82fef3ec481b9d979fd1ad77fa71/FLAGaa77e00c9 [2020-08-19 06:09:52,665 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 06:09:52,666 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-08-19 06:09:52,678 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79d4e9938/abfc82fef3ec481b9d979fd1ad77fa71/FLAGaa77e00c9 [2020-08-19 06:09:52,941 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79d4e9938/abfc82fef3ec481b9d979fd1ad77fa71 [2020-08-19 06:09:52,951 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 06:09:52,953 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 06:09:52,955 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 06:09:52,956 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 06:09:52,959 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 06:09:52,960 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:09:52" (1/1) ... [2020-08-19 06:09:52,964 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16e9c41e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:09:52, skipping insertion in model container [2020-08-19 06:09:52,964 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:09:52" (1/1) ... [2020-08-19 06:09:52,973 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 06:09:53,035 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 06:09:53,558 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:09:53,571 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 06:09:53,745 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:09:53,765 INFO L208 MainTranslator]: Completed translation [2020-08-19 06:09:53,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:09:53 WrapperNode [2020-08-19 06:09:53,765 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 06:09:53,766 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 06:09:53,766 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 06:09:53,766 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 06:09:53,781 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:09:53" (1/1) ... [2020-08-19 06:09:53,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:09:53" (1/1) ... [2020-08-19 06:09:53,798 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:09:53" (1/1) ... [2020-08-19 06:09:53,798 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:09:53" (1/1) ... [2020-08-19 06:09:53,824 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:09:53" (1/1) ... [2020-08-19 06:09:53,845 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:09:53" (1/1) ... [2020-08-19 06:09:53,849 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:09:53" (1/1) ... [2020-08-19 06:09:53,861 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 06:09:53,862 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 06:09:53,862 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 06:09:53,862 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 06:09:53,863 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:09:53" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 06:09:53,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 06:09:53,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 06:09:53,969 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-19 06:09:53,970 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 06:09:53,970 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 06:09:53,970 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-19 06:09:53,971 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-19 06:09:53,971 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-08-19 06:09:53,972 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 06:09:53,972 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-19 06:09:53,973 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-08-19 06:09:53,973 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-08-19 06:09:53,973 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-08-19 06:09:53,973 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-08-19 06:09:53,974 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-08-19 06:09:53,975 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-08-19 06:09:53,975 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-08-19 06:09:53,975 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 06:09:53,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 06:09:53,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 06:09:55,439 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 06:09:55,439 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-19 06:09:55,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:09:55 BoogieIcfgContainer [2020-08-19 06:09:55,453 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 06:09:55,455 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 06:09:55,455 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 06:09:55,459 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 06:09:55,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 06:09:52" (1/3) ... [2020-08-19 06:09:55,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f52eac8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:09:55, skipping insertion in model container [2020-08-19 06:09:55,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:09:53" (2/3) ... [2020-08-19 06:09:55,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f52eac8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:09:55, skipping insertion in model container [2020-08-19 06:09:55,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:09:55" (3/3) ... [2020-08-19 06:09:55,464 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-08-19 06:09:55,475 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 06:09:55,488 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 06:09:55,502 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 06:09:55,527 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 06:09:55,527 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 06:09:55,527 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 06:09:55,527 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 06:09:55,527 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 06:09:55,528 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 06:09:55,528 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 06:09:55,528 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 06:09:55,550 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states. [2020-08-19 06:09:55,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-08-19 06:09:55,566 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:09:55,568 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] [2020-08-19 06:09:55,568 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:09:55,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:09:55,575 INFO L82 PathProgramCache]: Analyzing trace with hash -483172071, now seen corresponding path program 1 times [2020-08-19 06:09:55,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:09:55,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1626081929] [2020-08-19 06:09:55,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:09:55,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:56,554 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-08-19 06:09:56,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:09:56,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:56,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:09:56,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1626081929] [2020-08-19 06:09:56,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:09:56,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 06:09:56,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712565761] [2020-08-19 06:09:56,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 06:09:56,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:09:56,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 06:09:56,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 06:09:56,667 INFO L87 Difference]: Start difference. First operand 304 states. Second operand 4 states. [2020-08-19 06:09:56,983 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-08-19 06:09:58,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:09:58,577 INFO L93 Difference]: Finished difference Result 599 states and 1046 transitions. [2020-08-19 06:09:58,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 06:09:58,580 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2020-08-19 06:09:58,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:09:58,599 INFO L225 Difference]: With dead ends: 599 [2020-08-19 06:09:58,599 INFO L226 Difference]: Without dead ends: 487 [2020-08-19 06:09:58,603 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:09:58,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2020-08-19 06:09:58,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 485. [2020-08-19 06:09:58,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 485 states. [2020-08-19 06:09:58,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 724 transitions. [2020-08-19 06:09:58,708 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 724 transitions. Word has length 142 [2020-08-19 06:09:58,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:09:58,712 INFO L479 AbstractCegarLoop]: Abstraction has 485 states and 724 transitions. [2020-08-19 06:09:58,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 06:09:58,712 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 724 transitions. [2020-08-19 06:09:58,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-08-19 06:09:58,723 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:09:58,723 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] [2020-08-19 06:09:58,724 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 06:09:58,724 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:09:58,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:09:58,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1126069355, now seen corresponding path program 1 times [2020-08-19 06:09:58,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:09:58,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1751259965] [2020-08-19 06:09:58,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:09:58,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:59,180 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-08-19 06:09:59,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:09:59,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:59,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:09:59,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1751259965] [2020-08-19 06:09:59,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:09:59,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 06:09:59,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778455142] [2020-08-19 06:09:59,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 06:09:59,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:09:59,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 06:09:59,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 06:09:59,223 INFO L87 Difference]: Start difference. First operand 485 states and 724 transitions. Second operand 4 states. [2020-08-19 06:09:59,438 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-08-19 06:10:00,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:10:00,785 INFO L93 Difference]: Finished difference Result 1027 states and 1575 transitions. [2020-08-19 06:10:00,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 06:10:00,786 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2020-08-19 06:10:00,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:10:00,793 INFO L225 Difference]: With dead ends: 1027 [2020-08-19 06:10:00,793 INFO L226 Difference]: Without dead ends: 845 [2020-08-19 06:10:00,796 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:10:00,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2020-08-19 06:10:00,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 843. [2020-08-19 06:10:00,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 843 states. [2020-08-19 06:10:00,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1268 transitions. [2020-08-19 06:10:00,846 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1268 transitions. Word has length 142 [2020-08-19 06:10:00,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:10:00,847 INFO L479 AbstractCegarLoop]: Abstraction has 843 states and 1268 transitions. [2020-08-19 06:10:00,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 06:10:00,847 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1268 transitions. [2020-08-19 06:10:00,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-08-19 06:10:00,849 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:10:00,850 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] [2020-08-19 06:10:00,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 06:10:00,850 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:10:00,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:10:00,851 INFO L82 PathProgramCache]: Analyzing trace with hash 229473698, now seen corresponding path program 1 times [2020-08-19 06:10:00,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:10:00,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1028504147] [2020-08-19 06:10:00,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:10:00,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:01,338 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-08-19 06:10:01,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:10:01,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:01,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:10:01,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1028504147] [2020-08-19 06:10:01,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:10:01,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 06:10:01,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953574018] [2020-08-19 06:10:01,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 06:10:01,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:10:01,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 06:10:01,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:10:01,388 INFO L87 Difference]: Start difference. First operand 843 states and 1268 transitions. Second operand 5 states. [2020-08-19 06:10:03,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:10:03,854 INFO L93 Difference]: Finished difference Result 2459 states and 3695 transitions. [2020-08-19 06:10:03,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 06:10:03,855 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-08-19 06:10:03,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:10:03,864 INFO L225 Difference]: With dead ends: 2459 [2020-08-19 06:10:03,864 INFO L226 Difference]: Without dead ends: 1629 [2020-08-19 06:10:03,868 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 [2020-08-19 06:10:03,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1629 states. [2020-08-19 06:10:03,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629 to 1627. [2020-08-19 06:10:03,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1627 states. [2020-08-19 06:10:03,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1627 states to 1627 states and 2425 transitions. [2020-08-19 06:10:03,966 INFO L78 Accepts]: Start accepts. Automaton has 1627 states and 2425 transitions. Word has length 142 [2020-08-19 06:10:03,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:10:03,967 INFO L479 AbstractCegarLoop]: Abstraction has 1627 states and 2425 transitions. [2020-08-19 06:10:03,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 06:10:03,967 INFO L276 IsEmpty]: Start isEmpty. Operand 1627 states and 2425 transitions. [2020-08-19 06:10:03,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-19 06:10:03,972 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:10:03,972 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] [2020-08-19 06:10:03,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 06:10:03,973 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:10:03,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:10:03,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1866532876, now seen corresponding path program 1 times [2020-08-19 06:10:03,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:10:03,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [219019625] [2020-08-19 06:10:03,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:10:04,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:04,405 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-08-19 06:10:04,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:10:04,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:04,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:10:04,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [219019625] [2020-08-19 06:10:04,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:10:04,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 06:10:04,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866226653] [2020-08-19 06:10:04,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 06:10:04,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:10:04,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 06:10:04,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 06:10:04,439 INFO L87 Difference]: Start difference. First operand 1627 states and 2425 transitions. Second operand 4 states. [2020-08-19 06:10:06,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:10:06,392 INFO L93 Difference]: Finished difference Result 4835 states and 7205 transitions. [2020-08-19 06:10:06,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 06:10:06,393 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-08-19 06:10:06,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:10:06,410 INFO L225 Difference]: With dead ends: 4835 [2020-08-19 06:10:06,410 INFO L226 Difference]: Without dead ends: 3240 [2020-08-19 06:10:06,414 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 [2020-08-19 06:10:06,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3240 states. [2020-08-19 06:10:06,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3240 to 1629. [2020-08-19 06:10:06,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1629 states. [2020-08-19 06:10:06,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1629 states to 1629 states and 2427 transitions. [2020-08-19 06:10:06,531 INFO L78 Accepts]: Start accepts. Automaton has 1629 states and 2427 transitions. Word has length 143 [2020-08-19 06:10:06,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:10:06,531 INFO L479 AbstractCegarLoop]: Abstraction has 1629 states and 2427 transitions. [2020-08-19 06:10:06,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 06:10:06,531 INFO L276 IsEmpty]: Start isEmpty. Operand 1629 states and 2427 transitions. [2020-08-19 06:10:06,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-08-19 06:10:06,535 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:10:06,535 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] [2020-08-19 06:10:06,535 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 06:10:06,536 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:10:06,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:10:06,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1747112419, now seen corresponding path program 1 times [2020-08-19 06:10:06,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:10:06,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [78742729] [2020-08-19 06:10:06,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:10:06,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:06,926 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-08-19 06:10:06,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:10:06,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:06,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:10:06,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [78742729] [2020-08-19 06:10:06,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:10:06,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 06:10:06,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696362921] [2020-08-19 06:10:06,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 06:10:06,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:10:06,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 06:10:06,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:10:06,993 INFO L87 Difference]: Start difference. First operand 1629 states and 2427 transitions. Second operand 5 states. [2020-08-19 06:10:09,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:10:09,729 INFO L93 Difference]: Finished difference Result 4735 states and 7041 transitions. [2020-08-19 06:10:09,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 06:10:09,730 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2020-08-19 06:10:09,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:10:09,746 INFO L225 Difference]: With dead ends: 4735 [2020-08-19 06:10:09,746 INFO L226 Difference]: Without dead ends: 3140 [2020-08-19 06:10:09,751 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 [2020-08-19 06:10:09,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3140 states. [2020-08-19 06:10:09,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3140 to 3138. [2020-08-19 06:10:09,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3138 states. [2020-08-19 06:10:09,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3138 states to 3138 states and 4626 transitions. [2020-08-19 06:10:09,941 INFO L78 Accepts]: Start accepts. Automaton has 3138 states and 4626 transitions. Word has length 144 [2020-08-19 06:10:09,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:10:09,942 INFO L479 AbstractCegarLoop]: Abstraction has 3138 states and 4626 transitions. [2020-08-19 06:10:09,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 06:10:09,942 INFO L276 IsEmpty]: Start isEmpty. Operand 3138 states and 4626 transitions. [2020-08-19 06:10:09,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-08-19 06:10:09,947 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:10:09,948 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] [2020-08-19 06:10:09,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 06:10:09,948 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:10:09,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:10:09,948 INFO L82 PathProgramCache]: Analyzing trace with hash 470263341, now seen corresponding path program 1 times [2020-08-19 06:10:09,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:10:09,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1666605602] [2020-08-19 06:10:09,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:10:09,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:10,240 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-08-19 06:10:10,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:10:10,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:10,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:10:10,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1666605602] [2020-08-19 06:10:10,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:10:10,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 06:10:10,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776334221] [2020-08-19 06:10:10,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 06:10:10,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:10:10,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 06:10:10,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 06:10:10,291 INFO L87 Difference]: Start difference. First operand 3138 states and 4626 transitions. Second operand 4 states. [2020-08-19 06:10:12,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:10:12,806 INFO L93 Difference]: Finished difference Result 9330 states and 13750 transitions. [2020-08-19 06:10:12,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 06:10:12,806 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 145 [2020-08-19 06:10:12,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:10:12,836 INFO L225 Difference]: With dead ends: 9330 [2020-08-19 06:10:12,836 INFO L226 Difference]: Without dead ends: 6240 [2020-08-19 06:10:12,843 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 [2020-08-19 06:10:12,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6240 states. [2020-08-19 06:10:13,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6240 to 3142. [2020-08-19 06:10:13,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3142 states. [2020-08-19 06:10:13,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3142 states to 3142 states and 4630 transitions. [2020-08-19 06:10:13,035 INFO L78 Accepts]: Start accepts. Automaton has 3142 states and 4630 transitions. Word has length 145 [2020-08-19 06:10:13,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:10:13,036 INFO L479 AbstractCegarLoop]: Abstraction has 3142 states and 4630 transitions. [2020-08-19 06:10:13,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 06:10:13,036 INFO L276 IsEmpty]: Start isEmpty. Operand 3142 states and 4630 transitions. [2020-08-19 06:10:13,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-19 06:10:13,042 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:10:13,043 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] [2020-08-19 06:10:13,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 06:10:13,043 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:10:13,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:10:13,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1966669402, now seen corresponding path program 1 times [2020-08-19 06:10:13,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:10:13,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [897161087] [2020-08-19 06:10:13,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:10:13,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:13,290 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-08-19 06:10:13,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:10:13,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:13,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:10:13,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [897161087] [2020-08-19 06:10:13,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:10:13,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 06:10:13,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657030660] [2020-08-19 06:10:13,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 06:10:13,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:10:13,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 06:10:13,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 06:10:13,333 INFO L87 Difference]: Start difference. First operand 3142 states and 4630 transitions. Second operand 4 states. [2020-08-19 06:10:15,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:10:15,606 INFO L93 Difference]: Finished difference Result 8922 states and 13174 transitions. [2020-08-19 06:10:15,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 06:10:15,607 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2020-08-19 06:10:15,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:10:15,634 INFO L225 Difference]: With dead ends: 8922 [2020-08-19 06:10:15,634 INFO L226 Difference]: Without dead ends: 6068 [2020-08-19 06:10:15,643 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 06:10:15,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6068 states. [2020-08-19 06:10:16,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6068 to 6066. [2020-08-19 06:10:16,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6066 states. [2020-08-19 06:10:16,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6066 states to 6066 states and 8848 transitions. [2020-08-19 06:10:16,039 INFO L78 Accepts]: Start accepts. Automaton has 6066 states and 8848 transitions. Word has length 146 [2020-08-19 06:10:16,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:10:16,039 INFO L479 AbstractCegarLoop]: Abstraction has 6066 states and 8848 transitions. [2020-08-19 06:10:16,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 06:10:16,039 INFO L276 IsEmpty]: Start isEmpty. Operand 6066 states and 8848 transitions. [2020-08-19 06:10:16,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-19 06:10:16,052 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:10:16,052 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] [2020-08-19 06:10:16,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 06:10:16,053 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:10:16,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:10:16,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1533440317, now seen corresponding path program 1 times [2020-08-19 06:10:16,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:10:16,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [195263740] [2020-08-19 06:10:16,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:10:16,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:16,463 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-08-19 06:10:16,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:10:16,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:16,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:10:16,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [195263740] [2020-08-19 06:10:16,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:10:16,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 06:10:16,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155151164] [2020-08-19 06:10:16,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 06:10:16,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:10:16,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 06:10:16,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:10:16,523 INFO L87 Difference]: Start difference. First operand 6066 states and 8848 transitions. Second operand 5 states. [2020-08-19 06:10:18,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:10:18,195 INFO L93 Difference]: Finished difference Result 12466 states and 18074 transitions. [2020-08-19 06:10:18,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 06:10:18,196 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-08-19 06:10:18,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:10:18,222 INFO L225 Difference]: With dead ends: 12466 [2020-08-19 06:10:18,223 INFO L226 Difference]: Without dead ends: 6280 [2020-08-19 06:10:18,235 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 [2020-08-19 06:10:18,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6280 states. [2020-08-19 06:10:18,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6280 to 6278. [2020-08-19 06:10:18,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6278 states. [2020-08-19 06:10:18,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6278 states to 6278 states and 9022 transitions. [2020-08-19 06:10:18,538 INFO L78 Accepts]: Start accepts. Automaton has 6278 states and 9022 transitions. Word has length 146 [2020-08-19 06:10:18,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:10:18,538 INFO L479 AbstractCegarLoop]: Abstraction has 6278 states and 9022 transitions. [2020-08-19 06:10:18,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 06:10:18,538 INFO L276 IsEmpty]: Start isEmpty. Operand 6278 states and 9022 transitions. [2020-08-19 06:10:18,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-19 06:10:18,547 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:10:18,548 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] [2020-08-19 06:10:18,548 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 06:10:18,548 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:10:18,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:10:18,548 INFO L82 PathProgramCache]: Analyzing trace with hash -400414044, now seen corresponding path program 1 times [2020-08-19 06:10:18,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:10:18,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1642450514] [2020-08-19 06:10:18,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:10:18,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:19,041 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-08-19 06:10:19,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:10:19,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:19,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:10:19,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1642450514] [2020-08-19 06:10:19,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:10:19,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 06:10:19,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726943311] [2020-08-19 06:10:19,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 06:10:19,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:10:19,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 06:10:19,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:10:19,088 INFO L87 Difference]: Start difference. First operand 6278 states and 9022 transitions. Second operand 5 states. [2020-08-19 06:10:21,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:10:21,320 INFO L93 Difference]: Finished difference Result 9166 states and 13176 transitions. [2020-08-19 06:10:21,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 06:10:21,321 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-08-19 06:10:21,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:10:21,333 INFO L225 Difference]: With dead ends: 9166 [2020-08-19 06:10:21,333 INFO L226 Difference]: Without dead ends: 6280 [2020-08-19 06:10:21,339 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 [2020-08-19 06:10:21,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6280 states. [2020-08-19 06:10:21,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6280 to 6066. [2020-08-19 06:10:21,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6066 states. [2020-08-19 06:10:21,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6066 states to 6066 states and 8760 transitions. [2020-08-19 06:10:21,590 INFO L78 Accepts]: Start accepts. Automaton has 6066 states and 8760 transitions. Word has length 146 [2020-08-19 06:10:21,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:10:21,591 INFO L479 AbstractCegarLoop]: Abstraction has 6066 states and 8760 transitions. [2020-08-19 06:10:21,591 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 06:10:21,591 INFO L276 IsEmpty]: Start isEmpty. Operand 6066 states and 8760 transitions. [2020-08-19 06:10:21,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-19 06:10:21,600 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:10:21,600 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] [2020-08-19 06:10:21,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 06:10:21,601 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:10:21,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:10:21,601 INFO L82 PathProgramCache]: Analyzing trace with hash -946102129, now seen corresponding path program 1 times [2020-08-19 06:10:21,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:10:21,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1468550990] [2020-08-19 06:10:21,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:10:21,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:21,872 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-08-19 06:10:21,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:10:21,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:21,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:10:21,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1468550990] [2020-08-19 06:10:21,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:10:21,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 06:10:21,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180372846] [2020-08-19 06:10:21,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 06:10:21,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:10:21,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 06:10:21,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 06:10:21,930 INFO L87 Difference]: Start difference. First operand 6066 states and 8760 transitions. Second operand 4 states. [2020-08-19 06:10:24,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:10:24,119 INFO L93 Difference]: Finished difference Result 14910 states and 21518 transitions. [2020-08-19 06:10:24,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 06:10:24,120 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2020-08-19 06:10:24,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:10:24,147 INFO L225 Difference]: With dead ends: 14910 [2020-08-19 06:10:24,147 INFO L226 Difference]: Without dead ends: 12024 [2020-08-19 06:10:24,155 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 [2020-08-19 06:10:24,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12024 states. [2020-08-19 06:10:24,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12024 to 6074. [2020-08-19 06:10:24,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6074 states. [2020-08-19 06:10:24,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6074 states to 6074 states and 8768 transitions. [2020-08-19 06:10:24,541 INFO L78 Accepts]: Start accepts. Automaton has 6074 states and 8768 transitions. Word has length 147 [2020-08-19 06:10:24,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:10:24,542 INFO L479 AbstractCegarLoop]: Abstraction has 6074 states and 8768 transitions. [2020-08-19 06:10:24,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 06:10:24,542 INFO L276 IsEmpty]: Start isEmpty. Operand 6074 states and 8768 transitions. [2020-08-19 06:10:24,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-08-19 06:10:24,550 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:10:24,550 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] [2020-08-19 06:10:24,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 06:10:24,550 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:10:24,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:10:24,551 INFO L82 PathProgramCache]: Analyzing trace with hash 585736260, now seen corresponding path program 1 times [2020-08-19 06:10:24,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:10:24,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [316925210] [2020-08-19 06:10:24,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:10:24,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:24,941 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-08-19 06:10:24,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:10:24,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:10:24,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:10:24,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [316925210] [2020-08-19 06:10:24,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:10:24,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 06:10:24,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29599704] [2020-08-19 06:10:24,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 06:10:24,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:10:24,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 06:10:24,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:10:24,991 INFO L87 Difference]: Start difference. First operand 6074 states and 8768 transitions. Second operand 5 states. [2020-08-19 06:10:27,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:10:27,556 INFO L93 Difference]: Finished difference Result 17704 states and 25485 transitions. [2020-08-19 06:10:27,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 06:10:27,556 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-08-19 06:10:27,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:10:27,580 INFO L225 Difference]: With dead ends: 17704 [2020-08-19 06:10:27,581 INFO L226 Difference]: Without dead ends: 11677 [2020-08-19 06:10:27,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 06:10:27,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11677 states. [2020-08-19 06:10:28,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11677 to 11675. [2020-08-19 06:10:28,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11675 states. [2020-08-19 06:10:28,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11675 states to 11675 states and 16612 transitions. [2020-08-19 06:10:28,209 INFO L78 Accepts]: Start accepts. Automaton has 11675 states and 16612 transitions. Word has length 148 [2020-08-19 06:10:28,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:10:28,210 INFO L479 AbstractCegarLoop]: Abstraction has 11675 states and 16612 transitions. [2020-08-19 06:10:28,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 06:10:28,210 INFO L276 IsEmpty]: Start isEmpty. Operand 11675 states and 16612 transitions. [2020-08-19 06:10:28,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-08-19 06:10:28,223 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:10:28,223 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] [2020-08-19 06:10:28,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 06:10:28,224 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:10:28,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:10:28,224 INFO L82 PathProgramCache]: Analyzing trace with hash -1497708571, now seen corresponding path program 1 times [2020-08-19 06:10:28,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:10:28,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [291173886] [2020-08-19 06:10:28,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:10:28,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 06:10:28,290 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 06:10:28,291 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 06:10:28,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 06:10:28,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 06:10:28 BoogieIcfgContainer [2020-08-19 06:10:28,340 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 06:10:28,342 INFO L168 Benchmark]: Toolchain (without parser) took 35388.74 ms. Allocated memory was 147.8 MB in the beginning and 784.9 MB in the end (delta: 637.0 MB). Free memory was 102.7 MB in the beginning and 88.6 MB in the end (delta: 14.1 MB). Peak memory consumption was 651.1 MB. Max. memory is 7.1 GB. [2020-08-19 06:10:28,342 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 06:10:28,343 INFO L168 Benchmark]: CACSL2BoogieTranslator took 810.50 ms. Allocated memory was 147.8 MB in the beginning and 205.5 MB in the end (delta: 57.7 MB). Free memory was 102.5 MB in the beginning and 169.5 MB in the end (delta: -67.0 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2020-08-19 06:10:28,344 INFO L168 Benchmark]: Boogie Preprocessor took 95.29 ms. Allocated memory is still 205.5 MB. Free memory was 169.5 MB in the beginning and 165.3 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-08-19 06:10:28,344 INFO L168 Benchmark]: RCFGBuilder took 1591.14 ms. Allocated memory was 205.5 MB in the beginning and 235.4 MB in the end (delta: 29.9 MB). Free memory was 165.3 MB in the beginning and 150.8 MB in the end (delta: 14.5 MB). Peak memory consumption was 77.7 MB. Max. memory is 7.1 GB. [2020-08-19 06:10:28,345 INFO L168 Benchmark]: TraceAbstraction took 32885.23 ms. Allocated memory was 235.4 MB in the beginning and 784.9 MB in the end (delta: 549.5 MB). Free memory was 150.8 MB in the beginning and 88.6 MB in the end (delta: 62.1 MB). Peak memory consumption was 611.6 MB. Max. memory is 7.1 GB. [2020-08-19 06:10:28,348 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 810.50 ms. Allocated memory was 147.8 MB in the beginning and 205.5 MB in the end (delta: 57.7 MB). Free memory was 102.5 MB in the beginning and 169.5 MB in the end (delta: -67.0 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 95.29 ms. Allocated memory is still 205.5 MB. Free memory was 169.5 MB in the beginning and 165.3 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1591.14 ms. Allocated memory was 205.5 MB in the beginning and 235.4 MB in the end (delta: 29.9 MB). Free memory was 165.3 MB in the beginning and 150.8 MB in the end (delta: 14.5 MB). Peak memory consumption was 77.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 32885.23 ms. Allocated memory was 235.4 MB in the beginning and 784.9 MB in the end (delta: 549.5 MB). Free memory was 150.8 MB in the beginning and 88.6 MB in the end (delta: 62.1 MB). Peak memory consumption was 611.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 813]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1] int __return_main; [L14] msg_t nomsg = (msg_t )-1; [L15] port_t p12 = 0; [L16] char p12_old = '\x0'; [L17] char p12_new = '\x0'; [L18] _Bool ep12 = 0; [L19] port_t p13 = 0; [L20] char p13_old = '\x0'; [L21] char p13_new = '\x0'; [L22] _Bool ep13 = 0; [L23] port_t p21 = 0; [L24] char p21_old = '\x0'; [L25] char p21_new = '\x0'; [L26] _Bool ep21 = 0; [L27] port_t p23 = 0; [L28] char p23_old = '\x0'; [L29] char p23_new = '\x0'; [L30] _Bool ep23 = 0; [L31] port_t p31 = 0; [L32] char p31_old = '\x0'; [L33] char p31_new = '\x0'; [L34] _Bool ep31 = 0; [L35] port_t p32 = 0; [L36] char p32_old = '\x0'; [L37] char p32_new = '\x0'; [L38] _Bool ep32 = 0; [L39] char id1 = '\x0'; [L40] char r1 = '\x0'; [L41] char st1 = '\x0'; [L42] char nl1 = '\x0'; [L43] char m1 = '\x0'; [L44] char max1 = '\x0'; [L45] _Bool mode1 = 0; [L46] char id2 = '\x0'; [L47] char r2 = '\x0'; [L48] char st2 = '\x0'; [L49] char nl2 = '\x0'; [L50] char m2 = '\x0'; [L51] char max2 = '\x0'; [L52] _Bool mode2 = 0; [L53] char id3 = '\x0'; [L54] char r3 = '\x0'; [L55] char st3 = '\x0'; [L56] char nl3 = '\x0'; [L57] char m3 = '\x0'; [L58] char max3 = '\x0'; [L59] _Bool mode3 = 0; [L63] void (*nodes[3])() = { &node1, &node2, &node3 }; [L67] int __return_1708; [L68] int __return_1836; [L69] int __return_1954; [L70] int __return_2075; [L71] int __return_2198; [L72] int __tmp_2199_0; [L73] int __return_2307; [L74] int __return_2212; [L77] int main__c1; [L78] int main__i2; [L79] main__c1 = 0 [L80] ep12 = __VERIFIER_nondet_bool() [L81] ep13 = __VERIFIER_nondet_bool() [L82] ep21 = __VERIFIER_nondet_bool() [L83] ep23 = __VERIFIER_nondet_bool() [L84] ep31 = __VERIFIER_nondet_bool() [L85] ep32 = __VERIFIER_nondet_bool() [L86] id1 = __VERIFIER_nondet_char() [L87] r1 = __VERIFIER_nondet_char() [L88] st1 = __VERIFIER_nondet_char() [L89] nl1 = __VERIFIER_nondet_char() [L90] m1 = __VERIFIER_nondet_char() [L91] max1 = __VERIFIER_nondet_char() [L92] mode1 = __VERIFIER_nondet_bool() [L93] id2 = __VERIFIER_nondet_char() [L94] r2 = __VERIFIER_nondet_char() [L95] st2 = __VERIFIER_nondet_char() [L96] nl2 = __VERIFIER_nondet_char() [L97] m2 = __VERIFIER_nondet_char() [L98] max2 = __VERIFIER_nondet_char() [L99] mode2 = __VERIFIER_nondet_bool() [L100] id3 = __VERIFIER_nondet_char() [L101] r3 = __VERIFIER_nondet_char() [L102] st3 = __VERIFIER_nondet_char() [L103] nl3 = __VERIFIER_nondet_char() [L104] m3 = __VERIFIER_nondet_char() [L105] max3 = __VERIFIER_nondet_char() [L106] mode3 = __VERIFIER_nondet_bool() [L108] _Bool init__r121; [L109] _Bool init__r131; [L110] _Bool init__r211; [L111] _Bool init__r231; [L112] _Bool init__r311; [L113] _Bool init__r321; [L114] _Bool init__r122; [L115] int init__tmp; [L116] _Bool init__r132; [L117] int init__tmp___0; [L118] _Bool init__r212; [L119] int init__tmp___1; [L120] _Bool init__r232; [L121] int init__tmp___2; [L122] _Bool init__r312; [L123] int init__tmp___3; [L124] _Bool init__r322; [L125] int init__tmp___4; [L126] int init__tmp___5; [L127] init__r121 = ep12 [L128] init__r131 = ep13 [L129] init__r211 = ep21 [L130] init__r231 = ep23 [L131] init__r311 = ep31 [L132] init__r321 = ep32 [L133] COND FALSE !(!(init__r121 == 0)) [L2223] COND FALSE !(!(init__r131 == 0)) [L2239] init__tmp = 0 [L137] init__r122 = (_Bool)init__tmp [L138] COND FALSE !(!(init__r131 == 0)) [L2200] COND FALSE !(!(init__r121 == 0)) [L2216] init__tmp___0 = 0 [L142] init__r132 = (_Bool)init__tmp___0 [L143] COND FALSE !(!(init__r211 == 0)) [L2177] COND FALSE !(!(init__r231 == 0)) [L2193] init__tmp___1 = 0 [L147] init__r212 = (_Bool)init__tmp___1 [L148] COND FALSE !(!(init__r231 == 0)) [L2154] COND FALSE !(!(init__r211 == 0)) [L2170] init__tmp___2 = 0 [L152] init__r232 = (_Bool)init__tmp___2 [L153] COND FALSE !(!(init__r311 == 0)) [L2131] COND FALSE !(!(init__r321 == 0)) [L2147] init__tmp___3 = 0 [L157] init__r312 = (_Bool)init__tmp___3 [L158] COND FALSE !(!(init__r321 == 0)) [L2108] COND FALSE !(!(init__r311 == 0)) [L2124] init__tmp___4 = 0 [L162] init__r322 = (_Bool)init__tmp___4 [L163] COND TRUE ((int)id1) != ((int)id2) [L165] COND TRUE ((int)id1) != ((int)id3) [L167] COND TRUE ((int)id2) != ((int)id3) [L169] COND TRUE ((int)id1) >= 0 [L171] COND TRUE ((int)id2) >= 0 [L173] COND TRUE ((int)id3) >= 0 [L175] COND TRUE ((int)r1) == 0 [L177] COND TRUE ((int)r2) == 0 [L179] COND TRUE ((int)r3) == 0 [L181] COND TRUE ((int)max1) == ((int)id1) [L183] COND TRUE ((int)max2) == ((int)id2) [L185] COND TRUE ((int)max3) == ((int)id3) [L187] COND TRUE ((int)st1) == 0 [L189] COND TRUE ((int)st2) == 0 [L191] COND TRUE ((int)st3) == 0 [L193] COND TRUE ((int)nl1) == 0 [L195] COND TRUE ((int)nl2) == 0 [L197] COND TRUE ((int)nl3) == 0 [L199] COND TRUE ((int)mode1) == 0 [L201] COND TRUE ((int)mode2) == 0 [L203] COND TRUE ((int)mode3) == 0 [L205] init__tmp___5 = 1 [L206] __return_1708 = init__tmp___5 [L207] main__i2 = __return_1708 [L208] COND TRUE main__i2 != 0 [L210] p12_old = nomsg [L211] p12_new = nomsg [L212] p13_old = nomsg [L213] p13_new = nomsg [L214] p21_old = nomsg [L215] p21_new = nomsg [L216] p23_old = nomsg [L217] p23_new = nomsg [L218] p31_old = nomsg [L219] p31_new = nomsg [L220] p32_old = nomsg [L221] p32_new = nomsg [L222] main__i2 = 0 [L223] COND TRUE main__i2 < 6 [L226] COND FALSE !(!(mode1 == 0)) [L232] COND TRUE ((int)r1) < 2 [L234] COND FALSE !(!(ep12 == 0)) [L245] COND FALSE !(!(ep13 == 0)) [L256] mode1 = 1 [L258] COND FALSE !(!(mode2 == 0)) [L264] COND TRUE ((int)r2) < 2 [L266] COND FALSE !(!(ep21 == 0)) [L277] COND FALSE !(!(ep23 == 0)) [L288] mode2 = 1 [L290] COND FALSE !(!(mode3 == 0)) [L296] COND TRUE ((int)r3) < 2 [L298] COND FALSE !(!(ep31 == 0)) [L309] COND FALSE !(!(ep32 == 0)) [L320] mode3 = 1 [L321] p12_old = p12_new [L322] p12_new = nomsg [L323] p13_old = p13_new [L324] p13_new = nomsg [L325] p21_old = p21_new [L326] p21_new = nomsg [L327] p23_old = p23_new [L328] p23_new = nomsg [L329] p31_old = p31_new [L330] p31_new = nomsg [L331] p32_old = p32_new [L332] p32_new = nomsg [L334] int check__tmp; [L335] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L337] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L339] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L341] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L343] COND FALSE !(((int)r1) >= 2) [L349] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L351] COND TRUE ((int)r1) < 2 [L353] COND FALSE !(((int)r1) >= 2) [L359] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L361] COND TRUE ((int)r1) < 2 [L363] check__tmp = 1 [L364] __return_1836 = check__tmp [L365] main__c1 = __return_1836 [L367] _Bool __tmp_1; [L368] __tmp_1 = main__c1 [L369] _Bool assert__arg; [L370] assert__arg = __tmp_1 [L371] COND FALSE !(assert__arg == 0) [L377] int main____CPAchecker_TMP_0 = main__i2; [L378] main__i2 = main__i2 + 1 [L379] COND TRUE main__i2 < 6 [L382] COND TRUE !(mode1 == 0) [L384] r1 = (char)(((int)r1) + 1) [L385] COND FALSE !(!(ep21 == 0)) [L393] COND FALSE !(!(ep31 == 0)) [L401] COND FALSE !(((int)r1) == 2) [L407] mode1 = 0 [L409] COND TRUE !(mode2 == 0) [L411] r2 = (char)(((int)r2) + 1) [L412] COND FALSE !(!(ep12 == 0)) [L420] COND FALSE !(!(ep32 == 0)) [L428] COND FALSE !(((int)r2) == 2) [L434] mode2 = 0 [L436] COND TRUE !(mode3 == 0) [L438] r3 = (char)(((int)r3) + 1) [L439] COND FALSE !(!(ep13 == 0)) [L447] COND FALSE !(!(ep23 == 0)) [L455] COND FALSE !(((int)r3) == 2) [L461] mode3 = 0 [L462] p12_old = p12_new [L463] p12_new = nomsg [L464] p13_old = p13_new [L465] p13_new = nomsg [L466] p21_old = p21_new [L467] p21_new = nomsg [L468] p23_old = p23_new [L469] p23_new = nomsg [L470] p31_old = p31_new [L471] p31_new = nomsg [L472] p32_old = p32_new [L473] p32_new = nomsg [L475] int check__tmp; [L476] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L478] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L480] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L482] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L484] COND FALSE !(((int)r1) >= 2) [L490] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L492] COND TRUE ((int)r1) < 2 [L494] COND FALSE !(((int)r1) >= 2) [L500] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L502] COND TRUE ((int)r1) < 2 [L504] check__tmp = 1 [L505] __return_1954 = check__tmp [L506] main__c1 = __return_1954 [L508] _Bool __tmp_2; [L509] __tmp_2 = main__c1 [L510] _Bool assert__arg; [L511] assert__arg = __tmp_2 [L512] COND FALSE !(assert__arg == 0) [L518] int main____CPAchecker_TMP_0 = main__i2; [L519] main__i2 = main__i2 + 1 [L520] COND TRUE main__i2 < 6 [L523] COND FALSE !(!(mode1 == 0)) [L529] COND TRUE ((int)r1) < 2 [L531] COND FALSE !(!(ep12 == 0)) [L542] COND FALSE !(!(ep13 == 0)) [L553] mode1 = 1 [L555] COND FALSE !(!(mode2 == 0)) [L561] COND TRUE ((int)r2) < 2 [L563] COND FALSE !(!(ep21 == 0)) [L574] COND FALSE !(!(ep23 == 0)) [L585] mode2 = 1 [L587] COND FALSE !(!(mode3 == 0)) [L593] COND TRUE ((int)r3) < 2 [L595] COND FALSE !(!(ep31 == 0)) [L606] COND FALSE !(!(ep32 == 0)) [L617] mode3 = 1 [L618] p12_old = p12_new [L619] p12_new = nomsg [L620] p13_old = p13_new [L621] p13_new = nomsg [L622] p21_old = p21_new [L623] p21_new = nomsg [L624] p23_old = p23_new [L625] p23_new = nomsg [L626] p31_old = p31_new [L627] p31_new = nomsg [L628] p32_old = p32_new [L629] p32_new = nomsg [L631] int check__tmp; [L632] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L634] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L636] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L638] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L640] COND FALSE !(((int)r1) >= 2) [L646] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L648] COND TRUE ((int)r1) < 2 [L650] COND FALSE !(((int)r1) >= 2) [L656] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L658] COND TRUE ((int)r1) < 2 [L660] check__tmp = 1 [L661] __return_2075 = check__tmp [L662] main__c1 = __return_2075 [L664] _Bool __tmp_3; [L665] __tmp_3 = main__c1 [L666] _Bool assert__arg; [L667] assert__arg = __tmp_3 [L668] COND FALSE !(assert__arg == 0) [L674] int main____CPAchecker_TMP_0 = main__i2; [L675] main__i2 = main__i2 + 1 [L676] COND TRUE main__i2 < 6 [L679] COND TRUE !(mode1 == 0) [L681] r1 = (char)(((int)r1) + 1) [L682] COND FALSE !(!(ep21 == 0)) [L690] COND FALSE !(!(ep31 == 0)) [L698] COND TRUE ((int)r1) == 2 [L700] COND TRUE ((int)max1) == ((int)id1) [L702] st1 = 1 [L704] mode1 = 0 [L706] COND TRUE !(mode2 == 0) [L708] r2 = (char)(((int)r2) + 1) [L709] COND FALSE !(!(ep12 == 0)) [L717] COND FALSE !(!(ep32 == 0)) [L725] COND TRUE ((int)r2) == 2 [L727] COND TRUE ((int)max2) == ((int)id2) [L729] st2 = 1 [L731] mode2 = 0 [L733] COND TRUE !(mode3 == 0) [L735] r3 = (char)(((int)r3) + 1) [L736] COND FALSE !(!(ep13 == 0)) [L744] COND FALSE !(!(ep23 == 0)) [L752] COND TRUE ((int)r3) == 2 [L754] COND TRUE ((int)max3) == ((int)id3) [L756] st3 = 1 [L758] mode3 = 0 [L759] p12_old = p12_new [L760] p12_new = nomsg [L761] p13_old = p13_new [L762] p13_new = nomsg [L763] p21_old = p21_new [L764] p21_new = nomsg [L765] p23_old = p23_new [L766] p23_new = nomsg [L767] p31_old = p31_new [L768] p31_new = nomsg [L769] p32_old = p32_new [L770] p32_new = nomsg [L772] int check__tmp; [L773] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) <= 1) [L1398] check__tmp = 0 [L801] __return_2198 = check__tmp [L802] main__c1 = __return_2198 [L803] __tmp_2199_0 = main____CPAchecker_TMP_0 [L805] main____CPAchecker_TMP_0 = __tmp_2199_0 [L807] _Bool __tmp_4; [L808] __tmp_4 = main__c1 [L809] _Bool assert__arg; [L810] assert__arg = __tmp_4 [L811] COND TRUE assert__arg == 0 [L813] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 308 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 32.7s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 24.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7042 SDtfs, 6766 SDslu, 4400 SDs, 0 SdLazy, 7530 SolverSat, 90 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11675occurred 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: 2.6s AutomataMinimizationTime, 11 MinimizatonAttempts, 10887 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 1739 NumberOfCodeBlocks, 1739 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1580 ConstructedInterpolants, 0 QuantifiedInterpolants, 798711 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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...