/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-89f541c [2020-08-27 22:01:48,775 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-27 22:01:48,779 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-27 22:01:48,828 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-27 22:01:48,828 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-27 22:01:48,839 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-27 22:01:48,841 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-27 22:01:48,846 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-27 22:01:48,849 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-27 22:01:48,853 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-27 22:01:48,854 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-27 22:01:48,855 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-27 22:01:48,855 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-27 22:01:48,859 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-27 22:01:48,862 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-27 22:01:48,864 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-27 22:01:48,866 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-27 22:01:48,868 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-27 22:01:48,870 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-27 22:01:48,880 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-27 22:01:48,882 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-27 22:01:48,884 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-27 22:01:48,885 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-27 22:01:48,886 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-27 22:01:48,889 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-27 22:01:48,901 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-27 22:01:48,902 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-27 22:01:48,904 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-27 22:01:48,905 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 [2020-08-27 22:01:48,953 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-27 22:01:48,953 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-27 22:01:48,956 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-27 22:01:48,956 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-27 22:01:48,956 INFO L138 SettingsManager]: * Use SBE=true [2020-08-27 22:01:48,956 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-27 22:01:48,957 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-27 22:01:48,957 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-27 22:01:48,957 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-27 22:01:48,958 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-27 22:01:48,959 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-27 22:01:48,959 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-27 22:01:48,959 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-27 22:01:48,960 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-27 22:01:48,960 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-27 22:01:48,960 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-27 22:01:48,960 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-27 22:01:48,961 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-27 22:01:48,961 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-27 22:01:48,961 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-27 22:01:48,961 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-27 22:01:48,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-27 22:01:48,962 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-27 22:01:48,962 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-27 22:01:48,962 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-27 22:01:48,962 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-27 22:01:48,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-27 22:01:48,963 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-27 22:01:48,963 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-27 22:01:48,963 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 -> false [2020-08-27 22:01:49,450 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-27 22:01:49,467 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-27 22:01:49,471 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-27 22:01:49,474 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-27 22:01:49,474 INFO L275 PluginConnector]: CDTParser initialized [2020-08-27 22:01:49,475 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-08-27 22:01:49,565 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ade0f5320/018462b6a81e4385ab7d935fafb10ef2/FLAGe50f9e57d [2020-08-27 22:01:50,337 INFO L306 CDTParser]: Found 1 translation units. [2020-08-27 22:01:50,338 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-08-27 22:01:50,358 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ade0f5320/018462b6a81e4385ab7d935fafb10ef2/FLAGe50f9e57d [2020-08-27 22:01:50,465 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ade0f5320/018462b6a81e4385ab7d935fafb10ef2 [2020-08-27 22:01:50,477 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-27 22:01:50,479 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-27 22:01:50,482 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-27 22:01:50,483 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-27 22:01:50,487 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-27 22:01:50,488 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:01:50" (1/1) ... [2020-08-27 22:01:50,493 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@384a97ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:01:50, skipping insertion in model container [2020-08-27 22:01:50,493 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:01:50" (1/1) ... [2020-08-27 22:01:50,503 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-27 22:01:50,648 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-27 22:01:51,750 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 22:01:51,765 INFO L203 MainTranslator]: Completed pre-run [2020-08-27 22:01:52,227 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 22:01:52,272 INFO L208 MainTranslator]: Completed translation [2020-08-27 22:01:52,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:01:52 WrapperNode [2020-08-27 22:01:52,275 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-27 22:01:52,277 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-27 22:01:52,277 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-27 22:01:52,277 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-27 22:01:52,304 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:01:52" (1/1) ... [2020-08-27 22:01:52,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:01:52" (1/1) ... [2020-08-27 22:01:52,365 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:01:52" (1/1) ... [2020-08-27 22:01:52,366 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:01:52" (1/1) ... [2020-08-27 22:01:52,472 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:01:52" (1/1) ... [2020-08-27 22:01:52,509 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:01:52" (1/1) ... [2020-08-27 22:01:52,517 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:01:52" (1/1) ... [2020-08-27 22:01:52,530 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-27 22:01:52,530 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-27 22:01:52,531 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-27 22:01:52,531 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-27 22:01:52,532 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:01:52" (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 [2020-08-27 22:01:52,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-27 22:01:52,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-27 22:01:52,655 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-27 22:01:52,655 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-27 22:01:52,655 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-27 22:01:52,656 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-27 22:01:52,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-08-27 22:01:52,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-27 22:01:52,658 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-08-27 22:01:52,658 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-27 22:01:52,659 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-27 22:01:52,660 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-08-27 22:01:52,660 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-08-27 22:01:52,661 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-08-27 22:01:52,661 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-08-27 22:01:52,662 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-08-27 22:01:52,663 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-08-27 22:01:52,663 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-08-27 22:01:52,663 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-08-27 22:01:52,664 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-27 22:01:52,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-27 22:01:52,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-27 22:01:55,569 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-27 22:01:55,569 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-27 22:01:55,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:01:55 BoogieIcfgContainer [2020-08-27 22:01:55,581 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-27 22:01:55,582 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-27 22:01:55,582 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-27 22:01:55,586 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-27 22:01:55,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 10:01:50" (1/3) ... [2020-08-27 22:01:55,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47a7d84b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:01:55, skipping insertion in model container [2020-08-27 22:01:55,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:01:52" (2/3) ... [2020-08-27 22:01:55,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47a7d84b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:01:55, skipping insertion in model container [2020-08-27 22:01:55,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:01:55" (3/3) ... [2020-08-27 22:01:55,590 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-08-27 22:01:55,602 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-27 22:01:55,613 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-27 22:01:55,636 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-27 22:01:55,671 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-27 22:01:55,672 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-27 22:01:55,672 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-27 22:01:55,672 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-27 22:01:55,672 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-27 22:01:55,672 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-27 22:01:55,672 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-27 22:01:55,673 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-27 22:01:55,716 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states. [2020-08-27 22:01:55,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-08-27 22:01:55,751 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 22:01:55,752 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 22:01:55,753 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 22:01:55,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 22:01:55,760 INFO L82 PathProgramCache]: Analyzing trace with hash 578636414, now seen corresponding path program 1 times [2020-08-27 22:01:55,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 22:01:55,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [366532558] [2020-08-27 22:01:55,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 22:01:56,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:57,581 WARN L193 SmtUtils]: Spent 532.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-08-27 22:01:57,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:01:57,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:57,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 22:01:57,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [366532558] [2020-08-27 22:01:57,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 22:01:57,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-27 22:01:57,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520091514] [2020-08-27 22:01:57,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-27 22:01:57,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 22:01:57,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-27 22:01:57,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-27 22:01:57,845 INFO L87 Difference]: Start difference. First operand 796 states. Second operand 4 states. [2020-08-27 22:01:58,419 WARN L193 SmtUtils]: Spent 489.00 ms on a formula simplification that was a NOOP. DAG size: 278 [2020-08-27 22:02:03,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 22:02:03,656 INFO L93 Difference]: Finished difference Result 1515 states and 2659 transitions. [2020-08-27 22:02:03,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-27 22:02:03,658 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 318 [2020-08-27 22:02:03,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 22:02:03,706 INFO L225 Difference]: With dead ends: 1515 [2020-08-27 22:02:03,706 INFO L226 Difference]: Without dead ends: 1299 [2020-08-27 22:02:03,714 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-27 22:02:03,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1299 states. [2020-08-27 22:02:03,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1299 to 1297. [2020-08-27 22:02:03,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1297 states. [2020-08-27 22:02:03,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1297 states to 1297 states and 2028 transitions. [2020-08-27 22:02:03,902 INFO L78 Accepts]: Start accepts. Automaton has 1297 states and 2028 transitions. Word has length 318 [2020-08-27 22:02:03,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 22:02:03,908 INFO L479 AbstractCegarLoop]: Abstraction has 1297 states and 2028 transitions. [2020-08-27 22:02:03,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-27 22:02:03,908 INFO L276 IsEmpty]: Start isEmpty. Operand 1297 states and 2028 transitions. [2020-08-27 22:02:03,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-08-27 22:02:03,925 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 22:02:03,926 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 22:02:03,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-27 22:02:03,927 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 22:02:03,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 22:02:03,928 INFO L82 PathProgramCache]: Analyzing trace with hash 1367796252, now seen corresponding path program 1 times [2020-08-27 22:02:03,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 22:02:03,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [899124304] [2020-08-27 22:02:03,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 22:02:04,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:02:05,076 WARN L193 SmtUtils]: Spent 595.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-08-27 22:02:05,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:02:05,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:02:05,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 22:02:05,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [899124304] [2020-08-27 22:02:05,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 22:02:05,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-27 22:02:05,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902037995] [2020-08-27 22:02:05,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-27 22:02:05,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 22:02:05,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-27 22:02:05,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-27 22:02:05,358 INFO L87 Difference]: Start difference. First operand 1297 states and 2028 transitions. Second operand 4 states. [2020-08-27 22:02:06,030 WARN L193 SmtUtils]: Spent 610.00 ms on a formula simplification that was a NOOP. DAG size: 278 [2020-08-27 22:02:10,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 22:02:10,765 INFO L93 Difference]: Finished difference Result 2671 states and 4201 transitions. [2020-08-27 22:02:10,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-27 22:02:10,766 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 318 [2020-08-27 22:02:10,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 22:02:10,788 INFO L225 Difference]: With dead ends: 2671 [2020-08-27 22:02:10,789 INFO L226 Difference]: Without dead ends: 2289 [2020-08-27 22:02:10,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-27 22:02:10,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2289 states. [2020-08-27 22:02:10,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2289 to 2287. [2020-08-27 22:02:10,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2287 states. [2020-08-27 22:02:10,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2287 states to 2287 states and 3564 transitions. [2020-08-27 22:02:10,918 INFO L78 Accepts]: Start accepts. Automaton has 2287 states and 3564 transitions. Word has length 318 [2020-08-27 22:02:10,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 22:02:10,919 INFO L479 AbstractCegarLoop]: Abstraction has 2287 states and 3564 transitions. [2020-08-27 22:02:10,919 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-27 22:02:10,919 INFO L276 IsEmpty]: Start isEmpty. Operand 2287 states and 3564 transitions. [2020-08-27 22:02:10,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-08-27 22:02:10,934 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 22:02:10,935 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 22:02:10,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-27 22:02:10,941 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 22:02:10,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 22:02:10,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1797025293, now seen corresponding path program 1 times [2020-08-27 22:02:10,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 22:02:10,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1119097938] [2020-08-27 22:02:10,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 22:02:11,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:02:12,288 WARN L193 SmtUtils]: Spent 575.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-08-27 22:02:12,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:02:12,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:02:12,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 22:02:12,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1119097938] [2020-08-27 22:02:12,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 22:02:12,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-27 22:02:12,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427338206] [2020-08-27 22:02:12,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-27 22:02:12,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 22:02:12,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-27 22:02:12,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-27 22:02:12,571 INFO L87 Difference]: Start difference. First operand 2287 states and 3564 transitions. Second operand 4 states. [2020-08-27 22:02:13,041 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 278 [2020-08-27 22:02:17,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 22:02:17,453 INFO L93 Difference]: Finished difference Result 4943 states and 7762 transitions. [2020-08-27 22:02:17,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-27 22:02:17,454 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 318 [2020-08-27 22:02:17,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 22:02:17,476 INFO L225 Difference]: With dead ends: 4943 [2020-08-27 22:02:17,476 INFO L226 Difference]: Without dead ends: 4229 [2020-08-27 22:02:17,479 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-27 22:02:17,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4229 states. [2020-08-27 22:02:17,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4229 to 4227. [2020-08-27 22:02:17,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4227 states. [2020-08-27 22:02:17,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4227 states to 4227 states and 6568 transitions. [2020-08-27 22:02:17,591 INFO L78 Accepts]: Start accepts. Automaton has 4227 states and 6568 transitions. Word has length 318 [2020-08-27 22:02:17,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 22:02:17,592 INFO L479 AbstractCegarLoop]: Abstraction has 4227 states and 6568 transitions. [2020-08-27 22:02:17,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-27 22:02:17,592 INFO L276 IsEmpty]: Start isEmpty. Operand 4227 states and 6568 transitions. [2020-08-27 22:02:17,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-08-27 22:02:17,602 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 22:02:17,602 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 22:02:17,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-27 22:02:17,603 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 22:02:17,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 22:02:17,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1914723175, now seen corresponding path program 1 times [2020-08-27 22:02:17,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 22:02:17,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [692539446] [2020-08-27 22:02:17,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 22:02:17,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:02:18,579 WARN L193 SmtUtils]: Spent 478.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-08-27 22:02:18,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:02:18,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:02:18,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 22:02:18,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [692539446] [2020-08-27 22:02:18,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 22:02:18,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-27 22:02:18,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262670855] [2020-08-27 22:02:18,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-27 22:02:18,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 22:02:18,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-27 22:02:18,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-27 22:02:18,709 INFO L87 Difference]: Start difference. First operand 4227 states and 6568 transitions. Second operand 4 states. [2020-08-27 22:02:19,208 WARN L193 SmtUtils]: Spent 455.00 ms on a formula simplification that was a NOOP. DAG size: 278 [2020-08-27 22:02:23,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 22:02:23,546 INFO L93 Difference]: Finished difference Result 9359 states and 14670 transitions. [2020-08-27 22:02:23,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-27 22:02:23,546 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 318 [2020-08-27 22:02:23,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 22:02:23,583 INFO L225 Difference]: With dead ends: 9359 [2020-08-27 22:02:23,583 INFO L226 Difference]: Without dead ends: 8029 [2020-08-27 22:02:23,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-27 22:02:23,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8029 states. [2020-08-27 22:02:23,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8029 to 8027. [2020-08-27 22:02:23,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8027 states. [2020-08-27 22:02:23,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8027 states to 8027 states and 12440 transitions. [2020-08-27 22:02:23,821 INFO L78 Accepts]: Start accepts. Automaton has 8027 states and 12440 transitions. Word has length 318 [2020-08-27 22:02:23,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 22:02:23,822 INFO L479 AbstractCegarLoop]: Abstraction has 8027 states and 12440 transitions. [2020-08-27 22:02:23,822 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-27 22:02:23,822 INFO L276 IsEmpty]: Start isEmpty. Operand 8027 states and 12440 transitions. [2020-08-27 22:02:23,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-08-27 22:02:23,847 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 22:02:23,848 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 22:02:23,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-27 22:02:23,849 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 22:02:23,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 22:02:23,850 INFO L82 PathProgramCache]: Analyzing trace with hash 769893352, now seen corresponding path program 1 times [2020-08-27 22:02:23,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 22:02:23,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [807497093] [2020-08-27 22:02:23,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 22:02:24,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:02:24,930 WARN L193 SmtUtils]: Spent 497.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-08-27 22:02:24,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:02:24,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:02:25,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 22:02:25,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [807497093] [2020-08-27 22:02:25,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 22:02:25,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-27 22:02:25,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261635193] [2020-08-27 22:02:25,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-27 22:02:25,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 22:02:25,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-27 22:02:25,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-27 22:02:25,057 INFO L87 Difference]: Start difference. First operand 8027 states and 12440 transitions. Second operand 5 states. [2020-08-27 22:02:32,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 22:02:32,473 INFO L93 Difference]: Finished difference Result 23754 states and 36777 transitions. [2020-08-27 22:02:32,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-27 22:02:32,474 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 318 [2020-08-27 22:02:32,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 22:02:32,530 INFO L225 Difference]: With dead ends: 23754 [2020-08-27 22:02:32,531 INFO L226 Difference]: Without dead ends: 15742 [2020-08-27 22:02:32,547 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-27 22:02:32,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15742 states. [2020-08-27 22:02:33,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15742 to 15740. [2020-08-27 22:02:33,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15740 states. [2020-08-27 22:02:33,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15740 states to 15740 states and 24254 transitions. [2020-08-27 22:02:33,041 INFO L78 Accepts]: Start accepts. Automaton has 15740 states and 24254 transitions. Word has length 318 [2020-08-27 22:02:33,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 22:02:33,041 INFO L479 AbstractCegarLoop]: Abstraction has 15740 states and 24254 transitions. [2020-08-27 22:02:33,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-27 22:02:33,041 INFO L276 IsEmpty]: Start isEmpty. Operand 15740 states and 24254 transitions. [2020-08-27 22:02:33,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-08-27 22:02:33,071 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 22:02:33,071 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 22:02:33,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-27 22:02:33,072 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 22:02:33,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 22:02:33,072 INFO L82 PathProgramCache]: Analyzing trace with hash -685152901, now seen corresponding path program 1 times [2020-08-27 22:02:33,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 22:02:33,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1714753061] [2020-08-27 22:02:33,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 22:02:33,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:02:33,880 WARN L193 SmtUtils]: Spent 482.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-08-27 22:02:33,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:02:33,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:02:34,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 22:02:34,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1714753061] [2020-08-27 22:02:34,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 22:02:34,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-27 22:02:34,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581932969] [2020-08-27 22:02:34,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-27 22:02:34,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 22:02:34,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-27 22:02:34,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-27 22:02:34,117 INFO L87 Difference]: Start difference. First operand 15740 states and 24254 transitions. Second operand 4 states. [2020-08-27 22:02:42,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 22:02:42,973 INFO L93 Difference]: Finished difference Result 46481 states and 71518 transitions. [2020-08-27 22:02:42,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-27 22:02:42,974 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 320 [2020-08-27 22:02:42,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 22:02:43,041 INFO L225 Difference]: With dead ends: 46481 [2020-08-27 22:02:43,042 INFO L226 Difference]: Without dead ends: 30870 [2020-08-27 22:02:43,084 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-27 22:02:43,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30870 states. [2020-08-27 22:02:44,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30870 to 30868. [2020-08-27 22:02:44,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30868 states. [2020-08-27 22:02:44,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30868 states to 30868 states and 47285 transitions. [2020-08-27 22:02:44,261 INFO L78 Accepts]: Start accepts. Automaton has 30868 states and 47285 transitions. Word has length 320 [2020-08-27 22:02:44,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 22:02:44,262 INFO L479 AbstractCegarLoop]: Abstraction has 30868 states and 47285 transitions. [2020-08-27 22:02:44,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-27 22:02:44,262 INFO L276 IsEmpty]: Start isEmpty. Operand 30868 states and 47285 transitions. [2020-08-27 22:02:44,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-08-27 22:02:44,305 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 22:02:44,306 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 22:02:44,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-27 22:02:44,306 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 22:02:44,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 22:02:44,307 INFO L82 PathProgramCache]: Analyzing trace with hash -810813248, now seen corresponding path program 1 times [2020-08-27 22:02:44,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 22:02:44,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1163859037] [2020-08-27 22:02:44,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 22:02:44,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat