/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem06_label41.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 05:45:07,846 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 05:45:07,849 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 05:45:07,887 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 05:45:07,888 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 05:45:07,889 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 05:45:07,891 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 05:45:07,894 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 05:45:07,903 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 05:45:07,904 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 05:45:07,906 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 05:45:07,907 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 05:45:07,908 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 05:45:07,909 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 05:45:07,910 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 05:45:07,912 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 05:45:07,913 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 05:45:07,914 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 05:45:07,916 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 05:45:07,918 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 05:45:07,920 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 05:45:07,922 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 05:45:07,923 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 05:45:07,924 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 05:45:07,927 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 05:45:07,927 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 05:45:07,928 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 05:45:07,929 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 05:45:07,929 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 05:45:07,930 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 05:45:07,931 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 05:45:07,932 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 05:45:07,933 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 05:45:07,934 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 05:45:07,935 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 05:45:07,936 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 05:45:07,937 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 05:45:07,938 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 05:45:07,939 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 05:45:07,940 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 05:45:07,941 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 05:45:07,942 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 [2020-10-29 05:45:07,972 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 05:45:07,972 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 05:45:07,974 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 05:45:07,974 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 05:45:07,974 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 05:45:07,975 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 05:45:07,975 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 05:45:07,975 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 05:45:07,975 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 05:45:07,975 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 05:45:07,976 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 05:45:07,976 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 05:45:07,976 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 05:45:07,976 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 05:45:07,976 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 05:45:07,977 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 05:45:07,977 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 05:45:07,977 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 05:45:07,977 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 05:45:07,977 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 05:45:07,978 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 05:45:07,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:45:07,978 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 05:45:07,978 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 05:45:07,978 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 05:45:07,979 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 05:45:07,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 05:45:07,979 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 05:45:07,979 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 05:45:07,979 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 05:45:08,409 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 05:45:08,461 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 05:45:08,465 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 05:45:08,466 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 05:45:08,467 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 05:45:08,470 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label41.c [2020-10-29 05:45:08,559 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/166d7c334/52840dea33fb4b9aab166599bb1b6806/FLAG83c2e1fc4 [2020-10-29 05:45:09,955 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 05:45:09,956 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label41.c [2020-10-29 05:45:10,026 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/166d7c334/52840dea33fb4b9aab166599bb1b6806/FLAG83c2e1fc4 [2020-10-29 05:45:10,127 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/166d7c334/52840dea33fb4b9aab166599bb1b6806 [2020-10-29 05:45:10,131 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 05:45:10,139 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 05:45:10,143 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 05:45:10,143 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 05:45:10,147 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 05:45:10,148 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:45:10" (1/1) ... [2020-10-29 05:45:10,152 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@396e584c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:45:10, skipping insertion in model container [2020-10-29 05:45:10,152 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:45:10" (1/1) ... [2020-10-29 05:45:10,162 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 05:45:10,415 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 05:45:12,473 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:45:12,486 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 05:45:13,551 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:45:13,615 INFO L208 MainTranslator]: Completed translation [2020-10-29 05:45:13,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:45:13 WrapperNode [2020-10-29 05:45:13,616 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 05:45:13,617 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 05:45:13,617 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 05:45:13,617 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 05:45:13,631 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:45:13" (1/1) ... [2020-10-29 05:45:13,633 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:45:13" (1/1) ... [2020-10-29 05:45:13,752 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:45:13" (1/1) ... [2020-10-29 05:45:13,752 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:45:13" (1/1) ... [2020-10-29 05:45:14,076 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:45:13" (1/1) ... [2020-10-29 05:45:14,120 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:45:13" (1/1) ... [2020-10-29 05:45:14,167 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:45:13" (1/1) ... [2020-10-29 05:45:14,316 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 05:45:14,318 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 05:45:14,318 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 05:45:14,318 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 05:45:14,319 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:45:13" (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 [2020-10-29 05:45:14,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 05:45:14,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 05:45:14,410 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 05:45:14,410 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 05:45:14,411 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 05:45:14,411 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 05:45:14,412 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 05:45:14,412 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-29 05:45:14,412 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 05:45:14,412 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 05:45:14,413 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 05:45:14,413 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 05:45:14,413 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 05:45:14,413 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-29 05:45:14,414 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 05:45:14,414 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 05:45:14,415 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 05:45:14,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 05:45:14,415 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 05:45:14,415 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 05:45:14,415 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 05:45:14,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 05:45:14,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 05:45:14,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 05:45:14,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 05:45:14,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 05:45:14,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 05:45:22,889 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 05:45:22,891 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 05:45:22,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:45:22 BoogieIcfgContainer [2020-10-29 05:45:22,896 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 05:45:22,898 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 05:45:22,898 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 05:45:22,902 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 05:45:22,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:45:10" (1/3) ... [2020-10-29 05:45:22,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9e85c6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:45:22, skipping insertion in model container [2020-10-29 05:45:22,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:45:13" (2/3) ... [2020-10-29 05:45:22,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9e85c6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:45:22, skipping insertion in model container [2020-10-29 05:45:22,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:45:22" (3/3) ... [2020-10-29 05:45:22,906 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem06_label41.c [2020-10-29 05:45:22,918 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 05:45:22,925 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 05:45:22,938 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 05:45:22,976 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 05:45:22,976 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 05:45:22,976 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 05:45:22,976 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 05:45:22,976 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 05:45:22,977 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 05:45:22,977 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 05:45:22,977 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 05:45:23,020 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states. [2020-10-29 05:45:23,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1002 [2020-10-29 05:45:23,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:45:23,098 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:45:23,099 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:45:23,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:45:23,114 INFO L82 PathProgramCache]: Analyzing trace with hash 135698188, now seen corresponding path program 1 times [2020-10-29 05:45:23,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:45:23,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [195200783] [2020-10-29 05:45:23,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:45:24,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:45:24,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:45:29,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:45:29,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:45:29,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1019 [2020-10-29 05:45:29,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:45:29,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5445 [2020-10-29 05:45:29,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:45:29,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:45:29,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 05:45:29,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:45:29,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1010 [2020-10-29 05:45:29,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 05:45:31,125 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:45:31,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:45:31,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:45:31,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:45:31,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:45:31,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:45:31,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:45:31,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 05:45:31,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:45:31,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:45:31,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:45:31,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:45:31,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:45:31,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:45:33,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:45:33,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [195200783] [2020-10-29 05:45:33,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 05:45:33,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 05:45:33,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166628859] [2020-10-29 05:45:33,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 05:45:33,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:45:33,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 05:45:33,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 05:45:33,031 INFO L87 Difference]: Start difference. First operand 1319 states. Second operand 4 states. [2020-10-29 05:45:33,349 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:45:51,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:45:51,610 INFO L93 Difference]: Finished difference Result 3770 states and 7012 transitions. [2020-10-29 05:45:51,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:45:51,613 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1001 [2020-10-29 05:45:51,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:45:51,668 INFO L225 Difference]: With dead ends: 3770 [2020-10-29 05:45:51,668 INFO L226 Difference]: Without dead ends: 2387 [2020-10-29 05:45:51,682 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:45:51,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2387 states. [2020-10-29 05:45:51,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2387 to 2374. [2020-10-29 05:45:51,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2374 states. [2020-10-29 05:45:51,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2374 states to 2374 states and 3972 transitions. [2020-10-29 05:45:51,905 INFO L78 Accepts]: Start accepts. Automaton has 2374 states and 3972 transitions. Word has length 1001 [2020-10-29 05:45:51,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:45:51,910 INFO L481 AbstractCegarLoop]: Abstraction has 2374 states and 3972 transitions. [2020-10-29 05:45:51,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 05:45:51,911 INFO L276 IsEmpty]: Start isEmpty. Operand 2374 states and 3972 transitions. [2020-10-29 05:45:51,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1014 [2020-10-29 05:45:51,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:45:51,962 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:45:51,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 05:45:51,963 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:45:51,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:45:51,966 INFO L82 PathProgramCache]: Analyzing trace with hash -1524667021, now seen corresponding path program 1 times [2020-10-29 05:45:51,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:45:51,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [950435186] [2020-10-29 05:45:51,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:45:52,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:45:52,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:45:54,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:45:57,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:45:57,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1033 [2020-10-29 05:45:57,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:45:57,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5208 [2020-10-29 05:45:57,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:45:57,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:45:57,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 05:45:57,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 05:45:57,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1007 [2020-10-29 05:45:57,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:45:59,189 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:45:59,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:45:59,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:45:59,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:45:59,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:45:59,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:45:59,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:45:59,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 05:45:59,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:45:59,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:45:59,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:45:59,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:45:59,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:45:59,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:45:59,450 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:45:59,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:45:59,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:45:59,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:45:59,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:45:59,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 05:45:59,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:45:59,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 05:45:59,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:45:59,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:45:59,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:45:59,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:45:59,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 05:45:59,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:46:01,058 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:46:01,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [950435186] [2020-10-29 05:46:01,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:46:01,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 05:46:01,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677101909] [2020-10-29 05:46:01,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 05:46:01,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:46:01,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 05:46:01,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:46:01,064 INFO L87 Difference]: Start difference. First operand 2374 states and 3972 transitions. Second operand 6 states. [2020-10-29 05:46:01,337 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:46:01,694 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:46:29,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:46:29,934 INFO L93 Difference]: Finished difference Result 8999 states and 15408 transitions. [2020-10-29 05:46:29,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 05:46:29,940 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1013 [2020-10-29 05:46:29,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:46:29,981 INFO L225 Difference]: With dead ends: 8999 [2020-10-29 05:46:29,981 INFO L226 Difference]: Without dead ends: 6631 [2020-10-29 05:46:29,989 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:46:29,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6631 states. [2020-10-29 05:46:30,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6631 to 6531. [2020-10-29 05:46:30,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6531 states. [2020-10-29 05:46:30,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6531 states to 6531 states and 10357 transitions. [2020-10-29 05:46:30,202 INFO L78 Accepts]: Start accepts. Automaton has 6531 states and 10357 transitions. Word has length 1013 [2020-10-29 05:46:30,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:46:30,204 INFO L481 AbstractCegarLoop]: Abstraction has 6531 states and 10357 transitions. [2020-10-29 05:46:30,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 05:46:30,204 INFO L276 IsEmpty]: Start isEmpty. Operand 6531 states and 10357 transitions. [2020-10-29 05:46:30,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1031 [2020-10-29 05:46:30,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:46:30,243 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:46:30,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 05:46:30,243 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:46:30,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:46:30,245 INFO L82 PathProgramCache]: Analyzing trace with hash 75411067, now seen corresponding path program 1 times [2020-10-29 05:46:30,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:46:30,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [551513866] [2020-10-29 05:46:30,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:46:30,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:46:30,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:46:31,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:46:35,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:46:35,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1052 [2020-10-29 05:46:35,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:46:35,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5189 [2020-10-29 05:46:35,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:46:35,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:46:35,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:46:35,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 05:46:35,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 05:46:35,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 05:46:35,978 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:46:35,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:46:35,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:46:35,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:46:35,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:46:35,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:46:35,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:46:35,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 05:46:35,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:46:35,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:46:35,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:46:35,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:46:35,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:46:35,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:46:36,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:46:36,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:46:36,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:46:36,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:46:36,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 05:46:36,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:46:36,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 05:46:36,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:46:36,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:46:36,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:46:36,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:46:36,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 05:46:36,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:46:36,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 05:46:36,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:46:36,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:46:36,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:46:36,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 05:46:36,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:46:36,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-29 05:46:36,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:46:36,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:46:36,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:46:36,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:46:36,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 05:46:36,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:46:36,814 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 05:46:36,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [551513866] [2020-10-29 05:46:36,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:46:36,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:46:36,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87781353] [2020-10-29 05:46:36,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:46:36,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:46:36,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:46:36,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:46:36,819 INFO L87 Difference]: Start difference. First operand 6531 states and 10357 transitions. Second operand 7 states. [2020-10-29 05:46:37,263 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:46:37,620 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:47:02,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:47:02,161 INFO L93 Difference]: Finished difference Result 19732 states and 33298 transitions. [2020-10-29 05:47:02,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 05:47:02,162 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1030 [2020-10-29 05:47:02,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:47:02,258 INFO L225 Difference]: With dead ends: 19732 [2020-10-29 05:47:02,258 INFO L226 Difference]: Without dead ends: 13207 [2020-10-29 05:47:02,278 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 05:47:02,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13207 states. [2020-10-29 05:47:02,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13207 to 12937. [2020-10-29 05:47:02,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12937 states. [2020-10-29 05:47:02,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12937 states to 12937 states and 19485 transitions. [2020-10-29 05:47:02,761 INFO L78 Accepts]: Start accepts. Automaton has 12937 states and 19485 transitions. Word has length 1030 [2020-10-29 05:47:02,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:47:02,762 INFO L481 AbstractCegarLoop]: Abstraction has 12937 states and 19485 transitions. [2020-10-29 05:47:02,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:47:02,762 INFO L276 IsEmpty]: Start isEmpty. Operand 12937 states and 19485 transitions. [2020-10-29 05:47:02,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1034 [2020-10-29 05:47:02,841 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:47:02,843 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:47:02,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 05:47:02,844 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:47:02,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:47:02,845 INFO L82 PathProgramCache]: Analyzing trace with hash -560257199, now seen corresponding path program 1 times [2020-10-29 05:47:02,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:47:02,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [572101918] [2020-10-29 05:47:02,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:47:02,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:47:02,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:47:03,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:47:05,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:47:07,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:47:08,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:47:08,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1055 [2020-10-29 05:47:08,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:47:08,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5404 [2020-10-29 05:47:08,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:47:08,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:47:08,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 05:47:08,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-29 05:47:08,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1026 [2020-10-29 05:47:08,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:47:09,371 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:47:09,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:47:09,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:47:09,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:47:09,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:47:09,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:47:09,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:47:09,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 05:47:09,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:47:09,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:47:09,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:47:09,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:47:09,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:47:09,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:47:09,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:47:09,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:47:09,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:47:09,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:47:09,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 05:47:09,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:47:09,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 05:47:09,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:47:09,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:47:09,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:47:09,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:47:09,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 05:47:09,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:47:09,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 05:47:09,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:47:09,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:47:09,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:47:09,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 05:47:09,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:47:09,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 05:47:09,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:47:09,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:47:09,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:47:09,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:47:09,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 05:47:09,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:47:10,932 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 05:47:10,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [572101918] [2020-10-29 05:47:10,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:47:10,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:47:10,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885983678] [2020-10-29 05:47:10,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:47:10,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:47:10,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:47:10,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:47:10,936 INFO L87 Difference]: Start difference. First operand 12937 states and 19485 transitions. Second operand 7 states. [2020-10-29 05:47:11,290 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:47:12,053 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:47:43,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:47:43,152 INFO L93 Difference]: Finished difference Result 51679 states and 85467 transitions. [2020-10-29 05:47:43,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 05:47:43,153 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1033 [2020-10-29 05:47:43,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:47:43,365 INFO L225 Difference]: With dead ends: 51679 [2020-10-29 05:47:43,365 INFO L226 Difference]: Without dead ends: 38748 [2020-10-29 05:47:43,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-29 05:47:43,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38748 states. [2020-10-29 05:47:45,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38748 to 38595. [2020-10-29 05:47:45,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38595 states. [2020-10-29 05:47:45,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38595 states to 38595 states and 58542 transitions. [2020-10-29 05:47:45,152 INFO L78 Accepts]: Start accepts. Automaton has 38595 states and 58542 transitions. Word has length 1033 [2020-10-29 05:47:45,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:47:45,155 INFO L481 AbstractCegarLoop]: Abstraction has 38595 states and 58542 transitions. [2020-10-29 05:47:45,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:47:45,155 INFO L276 IsEmpty]: Start isEmpty. Operand 38595 states and 58542 transitions. [2020-10-29 05:47:45,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1035 [2020-10-29 05:47:45,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:47:45,318 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:47:45,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 05:47:45,318 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:47:45,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:47:45,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1638234189, now seen corresponding path program 1 times [2020-10-29 05:47:45,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:47:45,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1249003568] [2020-10-29 05:47:45,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:47:45,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:47:45,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:47:45,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:47:45,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:47:50,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:47:50,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1056 [2020-10-29 05:47:50,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:47:50,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5296 [2020-10-29 05:47:50,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:47:50,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:47:50,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:47:50,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-29 05:47:50,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 05:47:50,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:47:51,250 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:47:51,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:47:51,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:47:51,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:47:51,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:47:51,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:47:51,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:47:51,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 05:47:51,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:47:51,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:47:51,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:47:51,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:47:51,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:47:51,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:47:51,392 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:47:51,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:47:51,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:47:51,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:47:51,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:47:51,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 05:47:51,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:47:51,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 05:47:51,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:47:51,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:47:51,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:47:51,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:47:51,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 05:47:51,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:47:51,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 05:47:51,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:47:51,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:47:51,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:47:51,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 05:47:51,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:47:51,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-29 05:47:51,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:47:51,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:47:51,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:47:51,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:47:51,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 05:47:51,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:47:52,138 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 05:47:52,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1249003568] [2020-10-29 05:47:52,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:47:52,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 05:47:52,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454630643] [2020-10-29 05:47:52,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 05:47:52,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:47:52,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 05:47:52,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:47:52,141 INFO L87 Difference]: Start difference. First operand 38595 states and 58542 transitions. Second operand 8 states. [2020-10-29 05:47:52,553 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-29 05:47:52,816 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-29 05:47:53,270 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:48:41,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:48:41,236 INFO L93 Difference]: Finished difference Result 137334 states and 241901 transitions. [2020-10-29 05:48:41,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 05:48:41,238 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1034 [2020-10-29 05:48:41,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:48:41,894 INFO L225 Difference]: With dead ends: 137334 [2020-10-29 05:48:41,894 INFO L226 Difference]: Without dead ends: 98745 [2020-10-29 05:48:42,025 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-29 05:48:42,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98745 states. [2020-10-29 05:48:46,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98745 to 98254. [2020-10-29 05:48:46,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98254 states.